Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek..

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek Inquiry into Physics 8th Edition by Ostdiek 1. A vector quantity has only a magnitude and no direction associated with it. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 2. Motion in a circle at constant speed is motion with constant acceleration. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 3. Motion in a circle at constant speed is motion with constant velocity. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 4. Uniform motion is any motion at constant speed. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 5. The terms velocity and speed have identical meanings in physics. a. True b. False Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek ANSWER: False

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 6. If an object’s speed is constant, its velocity must also be constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 7. If an object’s velocity is constant, its speed must also be constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 8. The proper abbreviation for ‘seconds’ is ‘sec.’ a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 9. The proper abbreviation for ‘grams’ is ‘g.’ a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek DATE MODIFIED: 6/13/2016 10:28 AM 10. The proper abbreviation for ‘kilohertz’ is ‘kHz.’ a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 11. The metric prefix that means one thousand is milli-. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 12. Twenty milliseconds is 0.020 s. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 13. There are one thousand megabytes in a gigabyte. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 14. The second is a metric unit of measure. a. True

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 15. The number of cycles of a periodic process that occur per unit time is called the period. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 16. The time for one complete cycle of a periodic process to take place is called the period. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 17. The period of oscillation for a signal having a frequency of 60 Hz is 60 seconds. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 18. The maximum possible speed in nature is the speed of light. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 19. Experimenting is part of the scientific method. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 20. A body at the end of a spring oscillates up and down ten times in five seconds. The period of oscillation is 2

s. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 21. The slope of a distance vs. time graph is the acceleration. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 22. The slope of a velocity vs. time graph is the acceleration. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek 23. An object moving in a circle undergoes centripetal acceleration. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 24. If an object’s acceleration is positive, its speed must be increasing. a. True b. False ANSWER: False RATIONALE: It could have a negative velocity that is getting less negative, which corresponds to

a decreasing speed.

POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 25. A fast-moving body must have a larger acceleration than a slow-moving body. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 26. An aircraft approaches a runway that runs directly east as a strong wind blows out of the south.

The direction that the aircraft should aim in order to land is east of north. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek The figure shows a distance versus time graph for an object.

27. The velocity of the moving object is a non-zero constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph (1) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:53 PM 28. The acceleration of the moving object is a non-zero constant. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph (1) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:54 PM The figure shows the distance versus time graph of an object.

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

29. The velocity of the moving object is a non-zero constant. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph (2) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:54 PM 30. The acceleration of the moving object is a non-zero constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph (2) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:54 PM

The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

31. The object’s velocity is zero in region II. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:55 PM 32. The object’s velocity is positive in region II. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:55 PM 33. The object’s velocity is never negative. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM Test Bank for Inquiry into Physics 8th Edition by Vern Ostdiek

Chapter 01: The Study of Motion DATE MODIFIED: 7/29/2016 1:55 PM 34. The object’s acceleration is zero only in region II. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:56 PM 35. The object’s acceleration is negative in region III. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:57 PM 36. The object is never at rest. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:57 PM 37. The object’s speed is greatest in region I. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE MODIFIED: 7/29/2016 1:57 PM

A ball thrown upwards reaches a maximum height and then comes back down to the original level.

38. As the ball is going upwards the velocity and acceleration both point up. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:39 PM 39. At the peak of the motion the velocity and acceleration are both zero. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:40 PM 40. As the ball is going downwards the velocity and acceleration both point down. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:41 PM 41. When a body moves in circular motion at constant speed the velocity and acceleration point in opposite

directions. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM

The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it starts to roll.

42. The distance from the starting point is 16 m. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:43 PM 43. The velocity acquired after starting from rest is 8 m/s. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:44 PM 44. The acceleration after starting from rest is 8 m/s2. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:45 PM 45. A racecar goes around a 200 m radius curve at a constant speed of 40 m/s. Its acceleration is 8 m/s2. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 46. A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration

of the racecar is 10 m/s2. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 47. A racecar driver steps on the gas, and his racecar travels 20 meters in 2 seconds starting from rest.

The acceleration of the racecar is 5 m/s2. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 48. Which of these are fundamental physical quantities? a. space, time, and matter b. kilograms, seconds, and meters c. length, time, and mass

d. momentum, energy, and mass

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 49. What is the proper abbreviation for ‘seconds?’ a. sec b. There is none. It should always be spelled out. c. secs d. s e. none of the above ANSWER: d Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 50. What is the proper abbreviation for ‘kilohertz?’ a. kh b. khz c. Khz d. KHz e. kHz ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 51. What is the proper abbreviation for ‘grams?’ a. g b. gms c. gm d. gr e. kg ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 52. Which metric prefix means one thousand? a. millib. centic. oned. kiloe. megaANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE MODIFIED: 7/13/2016 8:13 PM 53. Twenty milliseconds is a. 0.00002 s. b. 0.0002 s. c. 0.002 s. d. 0.02 s. e. 20000 s.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:13 PM 54. Fifteen microseconds is a. 0.0000015 s. b. 0.000015 s. c. 0.00015 s. d. 0.015 s. e. 15000000 s.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:17 PM 55. Twenty kilometers is a. 200,000 m. b. 20,000 m. c. 2,000 m. d. 200 m. e. 0.02 m.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:16 PM 56. Two microcuries is a. 200,000 Ci. Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion b. 0.0002 Ci. c. 0.00002 Ci. d. 0.000002 Ci. e. 0.00000002 Ci. ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:18 PM 57. How many megabytes are there in a gigabyte? a. 10 b. 1000 c. 1000000

d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 58. In expressions like Δv and Δt, Δ stands for a. “change in”. b. “triangle”. c. a constant of proportionality. d. a variable.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:19 PM 59. The number of cycles of a periodic process that occur per unit time is called a. amplitude. b. frequency. c. period. d. wavelength. e. speed.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:20 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion 60. The time for one complete cycle of a periodic process to take place is called a. amplitude. b. frequency. c. period. d. wavelength. e. speed.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:21 PM 61. A body at the end of a spring oscillates up and down ten times in five seconds. The period of oscillation is a. 0.5 s. b. 2 s. c. 5 s. d. 10 s. e. not determinable.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:21 PM 62. What is the period of a signal that has a frequency of 60 Hz? a. 60 s b. 60 s¯1 c. 1/60 s

d. not determinable

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/14/2016 2:52 PM 63. The slope of a distance vs. time graph is the a. distance. b. velocity. c. acceleration.

d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:22 PM 64. The slope of a velocity vs. time graph is the a. distance. b. velocity. c. acceleration.

d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:22 PM 65. An object moving in a circle undergoes a. constant acceleration. b. free fall. c. centripetal acceleration. d. linear acceleration. e. frequency.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:23 PM 66. Motion in a circle at constant speed is motion with a. constant acceleration. b. constant velocity. c. both of the above ANSWER: RATIONALE:

d. none of the above

d

Both v and a are continuously changing direction and therefore not constant.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:23 PM 67. An aircraft approaches a runway that runs directly east as a strong wind blows out of the south.

The direction that the aircraft should point in order to land on the runway is a. north. b. east of north. c. east.

Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion d. south of east. e. south.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:24 PM 68. GPS stands for a. the metric system of measurement. b. grams per second. c. Global Positioning System. d. a space shuttle. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:24 PM 69. Instantaneous speed and average speed are equal a. always. b. for motion at constant speed. c. for accelerated motion. d. never.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/14/2016 2:53 PM 70. If the velocity of an object is negative, a. its speed is decreasing. b. its velocity does not exist. c. it is reversing direction. d. it is moving in the direction labeled negative.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:25 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion

71.

The sum of vectors A and B is a.

b.

c.

d.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM The figure shows a distance versus time graph for an object.

72. The velocity of the moving object is a. zero. b. constant. c. increasing. d. decreasing. e. not determinable.

ANSWER:

b

Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph (1) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:47 PM 73. The acceleration of the moving object is a. zero. b. constant. c. increasing. d. decreasing. e. not determinable.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph (1) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:48 PM The figure shows the distance versus time graph of an object.

74. The velocity of the moving object is a. zero. b. constant. c. increasing. d. decreasing. e. not determinable.

ANSWER: c POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph (2) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:48 PM 75. The acceleration of the moving object is a. zero. b. constant. c. increasing. d. decreasing. e. not determinable.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph (2) DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:49 PM

The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.

76. The object’s velocity is zero in region(s) a. I. b. II. c. III.

d. no regions

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE MODIFIED: 7/29/2016 1:49 PM 77. The object’s velocity is positive in region(s) a. I. b. II. c. III.

d. no regions

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:50 PM 78. The object’s velocity is negative in region(s) a. I. b. II. c. III. d. no regions ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:50 PM 79. The object’s acceleration is negative in region(s) a. I. b. II. c. III.

d. no regions

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:50 PM 80. The object is at rest in region(s) a. I. b. II. c. III.

d. no regions

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:51 PM 81. The object’s speed is greatest in region(s) a. I. b. II. c. III.

d. no regions

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:51 PM

A ball thrown upwards reaches a maximum height and then comes back down to the original level.

82. As the ball is going upwards a. the velocity and acceleration both point up. b. the velocity points up and the acceleration down. c. the velocity points down and the acceleration up. d. the velocity and acceleration both point down. e. the acceleration is zero.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:46 PM 83. At the maximum height a. the velocity and acceleration both point up. b. the velocity points up and the acceleration down. c. the velocity points down and the acceleration up. d. the velocity and acceleration both point down. e. the velocity is zero. f. the acceleration is zero.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE MODIFIED: 7/29/2016 4:47 PM 84. As the ball is going downwards a. the velocity and acceleration both point up. b. the velocity points up and the acceleration down. c. the velocity points down and the acceleration up. d. the velocity and acceleration both point down. e. the acceleration is zero.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:47 PM 85. When a body moves in circular motion at constant speed a. the velocity and acceleration point in the same direction. b. the velocity and acceleration point in opposite directions. c. the velocity and acceleration point perpendicular to each other. d. the acceleration is zero. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:49 PM

A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2.

The ball is referred to at the two-second time.

86. The distance the ball is below the rooftop in meters is a. 0. b. 4.9. c. 9.8. d. 19.6. e. none of these.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball dropped Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:49 PM 87. The velocity of the ball in m/s is a. 0. b. 4.9. c. 9.8. d. 19.6. e. none of these.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball dropped DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:49 PM 88. The acceleration of the ball in m/s2 is a. 0. b. 4.9. c. 9.8. d. 19.6. e. none of these.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball dropped DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:49 PM

The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it starts to roll.

89. The distance from the starting point in meters is a. 0. b. 2. c. 4. d. 8. e. 16.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:50 PM 90. The velocity acquired after starting from rest in m/s is a. 0. b. 2. c. 4. d. 8. e. 16.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:50 PM 91. The acceleration in m/s2 after starting from rest is a. 0. b. 2. c. 4. d. 8. e. 16.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:51 PM 92. A racecar goes around a 200 m radius curve at a constant speed of 40 m/s. Its acceleration is a. 0. b 0.2 m/s2. c. 4 m/s2. d. 8 m/s2. e. 16 m/s2.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:52 PM 93. A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration

of the racecar is a. 0 b. 2 m/s2. c. 4 m/s2. d. 5 m/s2. e. 7.5 m/s2.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:53 PM 94. A racecar driver steps on the gas, and his racecar travels 20 meters in 2 seconds starting from rest.

The acceleration of the racecar is a. 0 b. 5 m/s2. c 9.8 m/s2. d. 10 m/s2. e. 20 m/s2.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 8:54 PM 95. The maximum possible speed in nature is a. warp 10. b. the speed of light. c. infinite. d. unknown.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 9:12 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion 96. Freely falling bodies experience a. motion with constant velocity. b. motion with zero acceleration. c. motion with constant acceleration. d. motion at a constant speed. e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/14/2016 2:54 PM 97. Which of these are physical quantities? a. time b. energy c. seconds d. kilometers e. volume ANSWER: a, b, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 98. Which of these are metric units? a. grams b. pounds c. seconds d. kilometers e. square miles ANSWER: a, c, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 99. Which of these are units of measure? a. time b. energy Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion c. seconds d. kilometers e. volume ANSWER: c, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 100. Which of these are English units? a. seconds b. feet c. kilometers

d. slugs

ANSWER: a, b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 1

101. The notation s− means the same thing as a. 1/s. b. Hz. c. per second.

d. none of the above

ANSWER: a, b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/13/2016 9:13 PM

The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.

Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion 102. The object’s acceleration is zero in region(s) a. I. b. II. c. III.

d. no regions

ANSWER: a, b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: d vs. t graph 3 regions DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 1:52 PM 103. Which of these are a part of the scientific method? a. hypothesis b. experiment c. dogma

d. observation

ANSWER: a, b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 104. What is “uniform motion?” a. smooth motion b. motion with zero acceleration c. motion with constant velocity d. motion at a constant speed e. motion along a straight path ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 105. Which of these objects is moving with constant velocity but changing acceleration? a. a rock dropped from a bridge b. a car going around a banked curve at 40 m/s c. an aircraft being launched off of an aircraft carrier d. an aircraft in a banked turn at 100 m/s ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/15/2016 12:45 PM 106. A quantity that has only a magnitude but no direction associated with it is called a ANSWER: scalar

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 107. A quantity that has both a magnitude and direction associated with it is called a ANSWER: vector

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 108. The proper abbreviation for ‘seconds’ is ANSWER: s

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 109. The notation s−1 means ANSWER: per second

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 110. The proper abbreviation for ‘kilohertz’ is ANSWER: kHz POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 01: The Study of Motion 111. The number of cycles of a periodic process that occur per unit time is called the ANSWER: frequency

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 112. The time for one complete cycle of a periodic process to take place is called the ANSWER: period

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 113. In expressions like Δv and Δt, Δ stands for ANSWER: change in

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 114. A body at the end of a spring oscillates up and down ten times in five seconds. The period of oscillation is

.

ANSWER: 0.5 s POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 115. The slope of a velocity vs. time graph is the ANSWER: acceleration

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 116. The slope of a distance vs. time graph is the ANSWER: velocity POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 01: The Study of Motion QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 117. An aircraft approaches a runway that runs directly east as a strong wind blows out of the south.

The direction that the aircraft should points in order to land on the runway is .

ANSWER: south of east POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM

A ball thrown upwards reaches a maximum height and then comes back down to the original level.

118. As the ball is going upwards, the velocity points ANSWER: up, down POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:52 PM 119. At the peak of the motion, the velocity is ANSWER: zero, down POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:52 PM 120. As the ball is going downwards, the velocity points ANSWER: down, down

and the acceleration points

and the acceleration points

.

.

and the acceleration points

.

121. When a body moves in circular motion at constant speed, the velocity and acceleration point

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball thrown upwards DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:53 PM

Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion ANSWER:

perpendicular to each other

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 122. If an object’s acceleration is nonzero, its velocity must be ANSWER: changing

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM

A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2.

The ball is referred to at the two-second time.

123. The ball is referred to at the two-second time. The distance below the rooftop is ANSWER: 19.6 m

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball dropped DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:53 PM 124. The ball is referred to at the two-second time. The velocity is ANSWER: 19.6 m/s POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball dropped DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:54 PM 125. The ball is referred to at the two-second time. The acceleration is ANSWER: 9.8 m/s2

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball dropped DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:54 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it starts to roll.

126. The distance from the starting point is ANSWER: 8m

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:55 PM 127. The acceleration after starting from rest is ANSWER: 4 m/s2

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:56 PM 128. The velocity acquired after starting from rest is ANSWER: 8 m/s

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: ball rolls down a ramp DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/29/2016 4:57 PM 129. A racecar goes around a 200 m radius curve at a constant speed of 40 m/s. Its acceleration is ANSWER: 8 m/s2

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 130. A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration

of the racecar is ANSWER:

.

2

5 m/s

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 131. A racecar driver steps on the gas, and his racecar travels 20 meters in 2 seconds starting from rest.

The acceleration of the racecar is ANSWER: 10 m/s2

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 132. A glider is in a banked curve with a radius of 125 m radius curve at a constant speed of 10 m/s. Its

acceleration is

.

ANSWER:

2

0.8 m/s

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/14/2016 12:28 PM 133. A pilot punches the throttle lever forward, changing his speed from 0 m/s to 40 m/s in 7 seconds. The

acceleration of the racecar is ANSWER: 5.7 m/s2

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/14/2016 12:28 PM 134. An aircraft undergoes a constant acceleration of 11 m/s2 for 12 seconds. The distance traveled is

.

ANSWER:

792 m

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/15/2016 12:45 PM 135. The Gateway Arch in St. Louis, Missouri is 630 feet tall. Express this distance in meters and in kilometers.

ANSWER: 192 m, 0.192 km POINTS: 1 QUESTION TYPE: Subjective Short Answer Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 136. Devil’s Tower National Monument is 1280 ft high. Convert this height to meters.

ANSWER: 390 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 137. A runner in a race takes 2.7 seconds to go from the 40 meter mark to the 70-meter mark.

(a) What is the runner’s speed? (b) How far would the runner go in 8 seconds if this speed is maintained? (c) How long did it take the runner to cover the first 40 m (assuming the same speed was maintained)?

ANSWER: 11.1 m/s, 89 m, 3.6 s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 7/12/2016 12:11 PM 138. During takeoff a jet aircraft goes from 0 m/s to 60 m/s in 5 seconds.

(a) What is the jet’s acceleration? (b) What is the jet’s speed after 22 seconds?

ANSWER:

12 m/s2, 264 m/s

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/14/2016 12:32 PM 139. The acceleration of a ball as it rolls down a ramp is 3 m/s2. It starts from rest.

(a) What is the ball’s speed after 4 seconds? (b) How far does the ball travel during the 4 seconds?

ANSWER: 12 m/s, 24 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion 140. A race car goes around a curve at 50 m/s. The radius of the curve is 400 m. What is the car’s acceleration?

ANSWER: 6.25 m/s2 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM 141. A ‘cliff diver’ in Mexico dives off a high cliff and falls for 2.3 seconds before hitting the water.

(a) How fast is the diver going at impact? (b) How far below the cliff is the diver at this point?

ANSWER: 22.5 m/s, 25.9 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/14/2016 12:34 PM 142. A high performance aircraft is executing a tight turn at 135 m/s. The radius of the curve is 750 m. What is

the aircraft’s acceleration?

ANSWER: 24.3 m/s2 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/13/2016 10:28 AM Match each item with the correct statement below. a. acceleration b. Aristotle c. centripetal acceleration

d. English

e. frequency

f. Galileo Galilei

g. kilo

h. metric

i. millik. scalar

j. period

m. vector

n. constant acceleration

l. velocity

QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/13/2016 10:28 AM DATE MODIFIED: 6/15/2016 1:47 PM 143. the number of cycles of a periodic process that occur per unit time ANSWER: e Copyright Cengage Learning. Powered by Cognero.

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Chapter 01: The Study of Motion POINTS:

1

144. the slope of a distance versus time graph equals this ANSWER: l POINTS: 1 145. any physical quantity that has a direction associated with it ANSWER: m POINTS: 1 146. any physical quantity that does not have a direction associated with it ANSWER: k POINTS: 1 147. the rate of change of velocity ANSWER: a POINTS: 1 148. time it takes for one complete cycle of a periodic process ANSWER: j POINTS: 1 149. any object moving in a circle undergoes this ANSWER: c POINTS: 1 150. metric prefix that means one thousand ANSWER: g POINTS: 1 151. correctly analyzed the motion of a falling body ANSWER: f POINTS: 1 152. most widely used system of measure ANSWER: h POINTS: 1 153. An object undergoing free fall in a vacuum experiences ANSWER: n POINTS: 1

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Chapter 02: Newton's Laws 1. All forces have specific directions associated with them. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 2. “Net force” means the vector sum of all the individual forces acting on a particular body. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 3. The weight of an object equals its mass times the acceleration of gravity. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 4. You are presently exerting a gravitational force on the Earth. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:47 AM 5. When a car goes around a curve of smaller and smaller radius, the centripetal force on it decreases. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

Page 1

Chapter 02: Newton's Laws POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 6. When a car goes around a curve at twice the speed, the centripetal force on the car doubles. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 7. You roll a ball off a table and at the same time drop a second ball straight down from the edge of the

table. The second ball reaches the ground before the first ball. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 8. With a fixed force, you will impart the same acceleration to a body on the Earth and on the Moon. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:48 AM 9. When a body moves with uniform acceleration, the net force on it is zero. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 10. You throw a ball straight up, it peaks out and then comes back down to you. During this motion, the velocity

and acceleration always point in the same direction. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 11. During its entire motion, the acceleration of a projectile is always g. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 12. At the peak of its motion, the acceleration of a projectile is zero. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 13. As a projectile moves its speed stays constant while its direction changes. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 14. When an object reaches its terminal speed, its acceleration is zero. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 15. As an object moves faster through the air, its terminal speed increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its upand-down motion.

16. The net force on the body has its largest magnitude. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 3:11 AM 17. The net force points downward. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 3:12 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 18. The acceleration is zero. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 3:12 AM 19. The velocity points down. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 3:12 AM 20. The displacement vector from the equilibrium position has its largest magnitude. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 21. The displacement vector from the equilibrium position points up. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 22. When a body moves in a straight line with increasing speed, the net force on it must be increasing. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 23. To hold a 5 lb bag of sugar in your hand, you must push upwards on it with a force of 5 lb. This is an

example of Newton’s third law. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 24. You push on a wall, and the wall pushes back on you with the same force. This is an example of Newton’s

third law. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 25. When you jump, you accelerate upward because the floor exerts an upward force on you. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 26. A newton is larger than a pound. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 27. As you go higher and higher above the surface of the Earth, the mass of a body stays constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:48 AM 28. A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If this same

body were placed on a 4,000-mile high tower, its weight would be 200 lb. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:12 PM 29. If a body were in orbit very near the surface of the Earth, its centripetal acceleration would be equal to g. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:49 AM 30. Planetary orbits are circles. a. True b. False ANSWER: False POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 31. Just above the surface of the Earth, the direction of the gravitational field is away from the Earth. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:50 AM 32. The direction of a field line at a point in space shows the direction of the force that would act on a body

placed at the point. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 33. As you go from a point where a gravitational field is strong to a point where the gravitational field gets

weaker, the gravitational field lines get farther apart. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 34. Gravity acts over a limited distance range. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 35. Tides are caused because different parts of the Earth’s oceans are at different distances from the Moon. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:50 AM 36. As an artillery shell travels from the gun to the target, the projectile’s vertical speed changes, but

its horizontal speed stays constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:13 AM 37. An aircraft weighing 1,500 N is accelerated at 15 m/s2, the force acting on the aircraft is 2,295.9 N. a. True b. False ANSWER: True RATIONALE: The mass of the aircraft is 1,500 N/9.8 m/s2 = 153.061 kg; F = ma = 153.061 kg 15 m/s2 = 2295.9 N POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 12:51 PM 38. An aircraft weighing 1,500 N has a mass of 153 kg. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE MODIFIED: 6/15/2016 2:08 AM 39. A satellite orbiting the Earth in a circular orbit at 400 miles from the center of Earth is moved to a distance of 1,200 miles from the center of Earth. The gravitational force between the Earth and satellite changes by a factor of 3. a. True b. False ANSWER: False RATIONALE: False, it changes by a factor of 32 = 9.

POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 40. A ball on a string is being whirled around overhead when the string breaks. The ball will move in the direction of the centripetal force the moment the string breaks. a. True b. False ANSWER: False False, the ball will move in the direction of the velocity vector when the string breaks.

RATIONALE: POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 41. The acceleration of a body is a. always in the same direction as its velocity. b. always in the same direction as the net force on the body. c. in the direction that the body is moving. d. equal to the net force on the body. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/14/2016 2:49 PM 42. An example of an action at a distance force is a. tension. b. weight. c. static friction. d. kinetic friction.

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Chapter 02: Newton's Laws e. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:15 PM 43. The SI units of velocity are a. mi/h. b. km/h. c. m/s2. d. m/s. e. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:16 PM 44. The SI units of acceleration are a. mi/h. b. km/h. c. m/s. d. m/s2. e. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:16 PM 45. The force needed to make an object move in a circle is a. centripetal force. b. weight. c. kinetic friction. d. static friction. e. none of the above.

ANSWER: POINTS:

a 1

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Chapter 02: Newton's Laws QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:21 PM 46. The force that keeps your feet from sliding as you walk is a. centripetal force. b. weight. c. kinetic friction. d. static friction. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:21 PM 47. If the net force on an object is zero, a. there must be no forces acting on the object. b. the object must be at rest. c. the object’s acceleration must be zero. d. there can be no friction acting on the object.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:17 PM 48. Which is larger, a newton or a pound? a. a newton b. a pound c. This question is nonsense—they don’t measure the same physical quantity. d. They are the same size.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 49. You push on a block on frictionless ice with a force of 8 N, causing it to accelerate at 2 m/s2. The mass of Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws the block is a. 2 kg. b. 4 kg. c. 8 kg. d. 16 kg. e. 6 kg.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:18 PM 50. Starting from rest, a 2-kg body acquires a speed of 8 m/s in 2 seconds. The net force acting on the body is a. 2 N. b. 4 N. c. 8 N. d. 16 N. e. 6 N. ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:18 PM 51. Two forces of 4 N and 12 N act on a body simultaneously. The net force on the body is a. 4 N. b. 12 N. c. 16 N. d. 8 N. e. impossible to tell from the given information.

ANSWER: e The directions of the forces must be known.

RATIONALE: POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:19 PM 52. You whirl a 2-kg body attached to a 1-meter cord around your head in a nearly horizontal circle with a

speed of 4 m/s. The tension in the cord is a. 2 N. Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws b. 4 N. c. 8 N. d. 16 N. e. 32 N. ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:19 PM 53. If object A has more mass than object B, a. A will weigh more than B. b. A will be harder to accelerate than B. c. A will be harder to keep moving in a circle. d. all of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 54. The frequency of a body oscillating from a spring on the Moon is

the frequency of the same

body oscillating from the same spring on Earth. a. the same as b. larger than c. smaller than d. not related to e. depending on the mass, smaller or larger than ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:05 AM 55. Two identical cars are traveling around the same curve on a highway. One of them is moving at 60 mph, and

the other is moving at 30 mph. The centripetal force acting on the car moving at 60 mph is value of the centripetal force acting on the car moving at 30 mph. a. one quarter b. one half c. the same as Copyright Cengage Learning. Powered by Cognero.

the

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Chapter 02: Newton's Laws d. twice e. four times ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 56. A car moving at a constant speed goes around a curve of 400-ft radius and then goes around a second curve

of 200-ft radius. The centripetal force acting on the car as it goes around the 200-ft radius curve is the value of the centripetal force acting on the car as it goes around the 400-ft radius curve. a. one quarter b. one half c. the same as d. twice e. four times ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:14 PM 57. You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The

second ball reaches the ground the first ball reaches the ground. a. before b. at the same time that c. after d. before or after, depending on the masses, e. cannot be determined ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 58. When a freely falling object reaches its terminal speed, a. it is still accelerating. b. its acceleration is zero. c. it is decelerating. d. its acceleration cannot be determined.

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Chapter 02: Newton's Laws ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:20 PM

A 160 lb person has a mass of 160/32 = 5 slugs. A 160-lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios.

59. The elevator is accelerating upwards at 2 ft/s2. a. 150 lb b. 160 lb c. 170 lb d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 60. The elevator accelerates upwards and is now moving at a constant speed. a. 150 lb b. 160 lb c. 170 lb d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 61. After moving upwards at constant speed, the elevator is slowing down at 2 m/s2 as it is coming to rest. a. 150 lb b. 160 lb c. 170 lb

d. none of the above

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 62. The elevator is accelerating downwards at 2 ft/s2.

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Chapter 02: Newton's Laws a. 150 lb

b. 160 lb

c. 170 lb d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 63. The elevator accelerates downwards and is now moving at a constant speed. a. 150 lb b. 160 lb c. 170 lb

d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 64. After moving downwards at constant speed, the elevator is slowing down at 2 m/s2 as it is coming to rest. a. 150 lb b. 160 lb c. 170 lb

d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 65. The elevator cable breaks. a. 150 lb b. 160 lb c. 170 lb

d. none of the above

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A 160 lb Person Has Mass DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 66. You throw a ball straight up, it peaks out, and then comes back down to you. During this motion, the

velocity and acceleration a. always point in the same direction. b. always point opposite to each other. c. sometimes point in the same direction, and other times point opposite to each other. d. depend on the way the ball is thrown. e. depend on the mass of the ball.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:23 PM 67. The horizontal speed of a projectile a. is zero. b. stays constant. c. continuously increases. d. continuously decreases. e. sometimes decreases and sometimes increases.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:23 PM 68. The vertical speed of a projectile a. is zero. b. stays constant. c. continuously increases. d. continuously decreases. e. sometimes decreases and sometimes increases.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:24 PM 69. The horizontal acceleration of a projectile a. is zero. b. stays constant.

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Chapter 02: Newton's Laws c. continuously increases. d. continuously decreases. e. sometimes decreases and sometimes increases.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:26 PM 70. The vertical acceleration of a projectile a. equals g pointing downwards. b. equals g pointing upwards. c. equals g pointing sometimes upwards and other times downwards. d. is zero. e. continuously increases.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:26 PM 71. Planetary orbits are a. parabolas. b. ellipses. c. circles.

d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:26 PM 72. Where is the Sun located relative to a planet’s orbit about it? a. at the center of the orbit, which is a circle b. at the center of the orbit, which is an ellipse c. at one focus of the ellipse which forms the orbit d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE MODIFIED: 6/15/2016 3:00 AM 73. At the highest point on the path of a projectile, its vertical acceleration a. equals g pointing downwards. b. equals g pointing upwards. c. is zero. d. is undetermined. e. does not exist.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:27 PM 74. As a body falls through air starting from rest, its acceleration a. is zero. b. stays constant. c. continuously decreases. d. continuously increases. e. gets smaller and smaller, eventually approaching zero.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:27 PM 75. As a body falls through air starting from rest, its velocity a. stays constant. b. continuously decreases. c. continuously increases. d. gets larger and larger, eventually reaching a constant value. e. gets smaller and smaller, eventually approaching zero.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:28 PM

For this situation, I push on a heavy chair.

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Chapter 02: Newton's Laws 76. Suppose I push lightly on the chair, and the chair doesn’t move at all. Then the strength of the force the chair

exerts on me is a. less than the force I exert on the chair. b. equal to the force I exert on the chair. c. greater than the force I exert on the chair. d. zero.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: I Push on a Heavy Chair DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:29 PM 77. Suppose I push moderately on the chair, and this time the chair does move. Then the strength of the force the

chair exerts on me is a. less than the force I exert on the chair. b. equal to the force I exert on the chair. c. greater than the force I exert on the chair. d. zero.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: I Push on a Heavy Chair DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:31 PM 78. Suppose I push very hard on the chair, and this time the chair moves and I slip backward as well. Then the

strength of the force the chair exerts on me is a. less than the force I exert on the chair. b. equal to the force I exert on the chair. c. greater than the force I exert on the chair. d. zero.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: I Push on a Heavy Chair DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:32 PM

A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its upCopyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws and-down motion.

79. The velocity a. is zero.

b. has its largest magnitude.

c. points up. d. points down.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:35 PM 80. Two cars crash head on. At any given time during the crash, the magnitudes of the collision forces exerted

on each car are exactly equal. This is an example of Newton’s a. first law. b. second law. c. third law. d. no law.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:35 PM 81. A heavy truck hits a small car. At any given time during the impact, a. the force the truck exerts on the car is larger than the force the car exerts on the truck. b. the force the truck exerts on the car is smaller than the force the car exerts on the truck. c. the force the truck exerts on the car is equal to the force the car exerts on the truck. d. the only force present is the force of the truck on the car.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:36 PM 82. As a space shuttle is launched into orbit, the direction of its acceleration a. always points upward. b. always points downward. c. varies between pointing upward and pointing downward. d. stays constant.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:36 PM 83. Which statement is incorrect? The gravitational force on an orbiting satellite due to the Earth a. aims toward the center of the Earth. b. depends on the Earth’s mass. c. depends on the satellite’s mass. d. depends on the distance between the Earth and the satellite. e. none of the above ANSWER: e A - D are all true.

RATIONALE: POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:38 PM 84. A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If this same

body were placed on a 4,000-mile-high tower, its weight would be a. 100 lbs. b. 200 lbs. c. 400 lbs. d. 800 lbs. e. 16,000 lbs.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:38 PM 85. The symbol G is used to represent a. the acceleration of gravity. b. the universal gravitational constant. c. grams. d. gravity. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE MODIFIED: 7/13/2016 9:39 PM 86. How was the value of G first determined? a. by Cavendish, using a torsion balance b. by Eötvös, using a torsion balance c. via a gedanken experiment d. by Newton, watching an apple fall e. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 87. If a body were in orbit very near the surface of the Earth, its centripetal acceleration would be a. equal to g. b. smaller than g. c. larger than g. d. dependent on its mass. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:39 PM 88. During the period of one day, the number of high tides at a given point is about a. one. b. two. c. three. d. four. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:40 PM 89. Tides are influenced by a. the Moon.

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Chapter 02: Newton's Laws b. the Sun. c. the uneven surface of the Earth. d. all of the above. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:40 PM 90. The sensitive dependence upon initial conditions of the evolution of some physical systems is a feature of a. gravitation. b. fractals. c. air resistance. d. dynamical chaos. e. quantum mechanics.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:41 PM 91. Isaac Newton’s contributions to physics include a. the laws of motion. b. the law of universal gravitation. c. invention of the calculus. d. the invention of the reflecting telescope. e. all of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:41 PM 92. Starting from rest, a 20,000-kg aircraft being launched from an aircraft carrier goes from 0 to 90 m/s in

2 seconds. The net force acting on the aircraft is a. 3,600,000 N. b. 1,800,000 N. c. 900,000 N. d. 450,000 N. e. 275,000 N. ANSWER:

c

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Chapter 02: Newton's Laws RATIONALE:

F = ma; a = change in velocity/change in time = 90 m/s / 2 seconds = 45 m/s 2

2

F = 20,000 kg x 45

m/s = 900,000 N

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:42 PM 93. An aircraft weighs 1,500 N, its mass is a. 1,500 kg. b. 750 kg. c. 153 kg. d. mass cannot be determined ANSWER: c RATIONALE: m = w/g = 1500 kg m/s2 / 9.8 m/s2 = 153.06 kg POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:43 PM 94. Two identical airplanes are executing identical turns around a pylon. One of them is moving at 200 mph, and

the other is moving at 100 mph. The centripetal force acting on the airplane moving at 200 mph is the value of the centripetal force acting on the airplane moving at 100 mph. a. one quarter b. one half c. the same as d. twice e. four times ANSWER: RATIONALE:

e Centripetal force = mv2 / r; since v1 = 2v2 ; the force is (2)2 or 4 times as great.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 95. An astronaut in a space suit has a total mass of 143.5 kg and is standing on a scale that reads in newtons inside an elevator. If the elevator accelerates upward at the rate of 1.8 m/s2, what does the scale read? a. 703.2 N b. 1,406.3 N c. 882.3 N d. 1,664.6 N ANSWER: d RATIONALE: Fup = W + ma = (1,406.3 N) + (143.5 kg)(+1.8 m/s2) Fup = 1,664.6 N [rounded to one decimal place] POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE MODIFIED: 6/15/2016 12:53 PM 96. A 188-pound astronaut in a training exercise experiences an acceleration of 7.2 g's. What is the net force (in newtons) acting on the astronaut? a. 1,353.6 N b. 6,023.5 N c. 59,030.5 N d. 13,536 N ANSWER: b RATIONALE: Three part problem. First convert lb to N W = mg = 188 [1 lb] = 188 [4.45 N] = 436.6 N Next change this weight to a mass. m = W/g = (436.6 N)/(9.8 m/s2) = 85.367 kg Finally, use Newton's 2nd Law. F = ma = (85.367 kg)(70.56 m/s2) = 6023.5 N [rounded to one decimal place] POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:16 PM 97. Which of these are SI units? a. centimeters b. newtons c. pounds d. seconds e. none of the above ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its upand-down motion.

98. The net force on the body a. is zero. b. has its largest magnitude. c. points up.

d. points down.

ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:44 PM 99. The acceleration Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws a. is zero.

b. has its largest magnitude.

c. points up. d. points down.

ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:46 PM 100. The displacement vector from the equilibrium position a. is zero. b. has its largest magnitude. c. points up.

d. points down.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: A Body is Oscillating Up DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:47 PM 101. If the Earth’s mass were suddenly made larger but the Moon’s mass stayed the same, a. the Earth would exert a larger force on the Moon. b. the Moon would exert a larger force on the Earth. c. the Earth would exert a larger force on the Moon but the Moon would exert the same force on the

Earth as before. d. none of the above ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/14/2016 2:51 PM 102. A ball is thrown straight up, and reaches the top of its trajectory, the acceleration a. zero. b. 9.8 m/s2. c. points down. d. points up.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:47 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 103. The resistance to relative motion of two bodies in contact with each other is called ANSWER: friction force POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 104. The mass of a body on the Moon is ANSWER: the same as

.

the mass of the same body on Earth.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:54 AM 105. The weight of a body on the Moon is ANSWER: less than POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:57 AM

the weight of the same body on Earth.

106. You push on a block on frictionless ice with a force of 8 N, causing it to accelerate at 2 m/s2. The mass of

the block is

.

ANSWER: 4 kg POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 107. Starting from rest, a 2-kg body acquires a speed of 8 m/s in 2 seconds. The net force acting on the body is

.

ANSWER:

8N

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:17 PM 108. You whirl a 2-kg body attached to a 1 meter cord around your head in a nearly horizontal circle with a Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws speed of 4 m/s. The tension in the cord is ANSWER: 32 N

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:17 PM 109. A car goes around a curve at 40 m/s. An accelerometer in the car measures the centripetal acceleration of

a 2-kg body in the car to be 8 m/s2. The radius of the curve is ANSWER: 200 m

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:17 PM 110. You stand on a bathroom scale at the equator and at the north pole. The scale reading at the equator is

the scale reading at the north pole.

ANSWER: slightly smaller than POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 111. You drop a freely falling body at the equator and at the north pole. The acceleration of the freely falling

body at the equator is ANSWER: the same as

the acceleration of the freely falling body at the north pole.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 112. You throw a ball straight up. As the ball is going up, the direction of the velocity and acceleration point

.

ANSWER:

opposite to each other

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 113. You can tell whether a projectile is going upwards or downwards from the sign of ANSWER: the vertical component of velocity

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 114. You are holding your physics book, pushing upwards on it with the palm of your hand. The reaction to this

force is the force on by ANSWER: your hand, the book

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 115. You are holding your physics book, pushing upwards on it with the palm of your hand. The reaction to the

weight of the book is the force on ANSWER: the Earth, the book

by

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:02 AM 116. As you go higher and higher above the surface of the Earth, the weight of a body ANSWER: decreases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:01 AM 117. As you go higher and higher above the surface of the Earth, the mass of a body ANSWER: stays constant

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:03 AM 118. As you go higher and higher above the surface of the Earth, the acceleration of a freely falling body

.

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Chapter 02: Newton's Laws ANSWER:

gets smaller and smaller

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:03 AM 119. As the radius of the orbit of an artificial satellite increases, its orbital period ANSWER: increases

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 120. The shapes of planetary orbits are ANSWER: ellipses

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 121. A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If this same

body were placed on a 4,000-mile-high tower, its weight would be .

ANSWER: 100 lb POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:18 PM 122. During the period of one day, the number of high tides at a given location is about ANSWER: two POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 123. The major influence on the tides is due to ANSWER: the Moon POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

.

.

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Chapter 02: Newton's Laws QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 2:00 AM 124. The sensitive dependence upon initial conditions of the evolution of some physical systems is a feature

of ANSWER:

. dynamical chaos

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 125. A car and driver have a total mass of 945 kg. While rounding a curve on a flat road at a speed of 29 m/s, the net force acting on the car and driver is determined to be 56,767.5 N. The radius of the curve is .

ANSWER: 14.0 m POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 126. An object is dropped from a tall building. The net force acting on the object is the difference between the object’s and the force of air resistance.

ANSWER: weight POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 127. A steel ball has a mass equal to 5 kilograms. What is the ball’s weight?

ANSWER: 49 N POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 128. Find your own weight in newtons.

ANSWER: Answers will vary. My weight is about 900 N. POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 129. A ball rolling down a hill has a constant acceleration of 3 m/s2. If the ball’s mass is 2.5 kg, what is the net

force acting on the ball?

ANSWER: 7.5 N POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 130. A 3,000 kg truck experiences a net force of 2,000 N. What is its acceleration?

ANSWER: 0.667 m/s2 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 131. A certain speed boat weighs 4,900 N. It can accelerate from 0 to 20 m/s in 5 seconds.

(a) What is the mass of the boat? (b) What is the acceleration? (c) How large is the net force acting on the boat?

ANSWER:

(a) 500 kg, (b) 4 m/s2, (c) 2,000 N

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 132. A child on a merry-go-round is moving with speed 4 m/s in a circle with radius 2 m. If the child’s mass is

30 kg, what is the centripetal force?

ANSWER: 240 N POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 133. A satellite orbits the Earth at a distance of 10,000 miles from the Earth’s center. At this distance the force

of gravity on the satellite is 90 lbs. (a) What would the force on the satellite be if the distance were 5,000 miles instead? (b) At what distance from the Earth’s center would the force on the same satellite be 10 lbs?

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Chapter 02: Newton's Laws ANSWER:

(a) 360 lbs, (b) 30,000 miles

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:58 AM 134. An aircraft starts at rest and is accelerated at 10 m/s2 for 30 seconds, at which time the aircraft becomes airborne. What is the distance traveled during the 30 seconds? Assume the acceleration is constant.

ANSWER: 4,500 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

Match each item with the correct statement below. a. centripetal force b. circle c. ellipse d. field e. kinetic friction f. mass g. parabola h. SI i. simple harmonic motion j. static friction k. terminal speed l. tides m. weight QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 1:46 PM 135. needed to make an object move in a circle ANSWER: a POINTS: 1 136. a measure of an object's resistance to acceleration ANSWER: f POINTS: 1 137. keeps our feet from sliding as we walk ANSWER: j POINTS: 1 138. caused by the Moon’s gravitational pull ANSWER: l POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 139. shape of the path of a projectile ANSWER: g POINTS: 1 140. air resistance is one example ANSWER: e POINTS: 1 141. the force of air resistance leads to this ANSWER: k POINTS: 1 142. the force of gravity acting on a body ANSWER: m POINTS: 1 143. an object hanging from a spring can do this ANSWER: i POINTS: 1

Match each item with the correct statement below. a. m b. m2 c. m3 d. s e. Hz f. m/s g. m/s2 h. N i. kg QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 12:56 PM 144. the area of the sheet of paper you are looking at ANSWER: b POINTS: 1 145. the reading on your watch ANSWER: d POINTS: 1 146. the speedometer reading on your car ANSWER: f Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws POINTS:

1

147. your weight ANSWER: h POINTS: 1 148. the mass of a baseball ANSWER: i POINTS: 1 149. the force exerted on a baseball by a baseball bat ANSWER: h POINTS: 1 150. the distance between your school and your home ANSWER: a POINTS: 1 151. the quantity describing how the speed of your car changes ANSWER: g POINTS: 1 152. the pitch of a note when a piano key is struck ANSWER: e POINTS: 1 153. the frequency of a body vibrating at the end of a spring ANSWER: e POINTS: 1 154. the volume of a 5 lb bag of sugar ANSWER: c POINTS: 1 155. air

resistance ANSWER: h POINTS: 1 156. static and kinetic friction ANSWER: h POINTS: 1 157. the quantity that measures the resistance of an object to being accelerated ANSWER: i POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws 158. the gravitational pull of the Earth on the Moon ANSWER: h POINTS: 1

Match each item with the correct statement below. a. zero net force b. constant net force in the same direction as velocity c. constant net force opposite to velocity d. constant net force perpendicular to velocity e. net force decreasing with speed f. restoring force proportional to displacement QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 2:47 AM DATE MODIFIED: 6/15/2016 12:57 PM 159. motion in a straight line with decreasing speed ANSWER: b POINTS: 1 160. motion in a straight line with increasing speed ANSWER: c POINTS: 1 161. motion in a straight line at constant speed ANSWER: a POINTS: 1 162. motion in a circle ANSWER: d POINTS: 1 163. a body reaching a terminal velocity ANSWER: a POINTS: 1 164. a body not moving ANSWER: a POINTS: 1 165. simple harmonic motion ANSWER: f POINTS: 1 166. a body falling through air ANSWER: e Copyright Cengage Learning. Powered by Cognero.

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Chapter 02: Newton's Laws POINTS:

1

Match each item with the correct statement below. a. increases b. decreases c. stays the same QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 2:53 AM DATE MODIFIED: 6/15/2016 12:57 PM 167. An astronaut is being launched into space, the astronaut's mass ANSWER: c POINTS: 1 168. As a rocket is being launched into space with constant force (F), the acceleration ANSWER: a POINTS: 1 169. As the distance between two objects increases, the gravitational force ANSWER: b POINTS: 1 170. As the radius of a turn being made by an aircraft increases, the centripetal acceleration on the aircraft ANSWER: b POINTS: 1

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Chapter 03: Energy and Conservation Laws 1. Conservation laws can be used even when the details of what is occurring inside a system aren’t known. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 2. The momentum of an object never changes. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 3. Kinetic energy is conserved in elastic collisions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 4. Linear momentum is conserved in all collisions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 5. Momentum is conserved only when there is no friction. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

Page 1

Chapter 03: Energy and Conservation Laws POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 6. Work done within an isolated system can increase the energy of the system. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 7. Centripetal force changes linear momentum but not angular momentum. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

Consider a situation where two moving objects collide and rebound from each other.

8. Kinetic energy is definitely conserved. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Objects Collide Rebound DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 9. Linear momentum is definitely conserved. a. True b. False ANSWER: True POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Objects Collide Rebound DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Consider a situation where two moving objects collide, stick to each other, and move off together.

10. Kinetic energy is definitely not conserved. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Objects Collide Stick DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 11. Linear momentum is definitely conserved. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Objects Collide Stick DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 12. The energy stored in a pile driver is an example of gravitational potential energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 13. The energy stored in a stretched spring is an example of gravitational potential energy. a. True b. False ANSWER: False POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 14. The energy of a body moving across a horizontal surface is an example of kinetic energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 15. The energy in the water at the top of a waterfall is an example of gravitational potential energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 16. The energy of a ball rolling up an inclined plane is an example of both kinetic and gravitational

potential energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 17. For a body oscillating at the end of a spring, the energy is only elastic potential energy. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE MODIFIED: 6/13/2016 10:29 AM Consider a situation where a skater pulls her arms inward, causing her rotation rate to speed up.

18. Angular momentum is conserved. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 19. Linear momentum is not conserved. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 20. Kinetic energy is conserved. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a

floor in a time interval t.

21. The kinetic energy of the crate is 1/2 mv2. a. True b. False ANSWER: True POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 22. The potential energy of the crate is mgd. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 23. The linear momentum of the crate is Fv. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 24. The work you do on the crate is Fv. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 25. The power you supply to the crate is Fd/t. a. True b. False ANSWER: True POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 26. The measure of a body’s resistance to being rotated is its angular momentum. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 27. A watt is equal to 746 horsepower. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 28. You carry a 20-N box 5 m horizontally across a room. The work you do is 100 N-m. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:20 PM Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.

29. The work you do is 4 J. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 30. The increase of potential energy of the box is 100 J. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 31. You drop the box. As it falls to its original level, its kinetic energy is 100 J. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 32. When the box hits the floor its kinetic energy is converted into internal energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 33. A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2

m/s, and they stick together. After the collision, the velocity of the combined bodies is 0.8 m/s pointing towards the left. a. True b. False ANSWER:

True

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Chapter 03: Energy and Conservation Laws POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 34. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the vertical height

of the stairs is 20 meters, the person’s power output is 1,200 W. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 35. A rocket can never go faster than the speed of its exhaust. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 36. When more people ride upward in an elevator, more power is required. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 37. A spacecraft can gain energy by passing near a planet. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 38. When a car comes to a stop its kinetic energy is converted to internal energy in its brakes, heating them up. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 39. The collision between two cars in an accident is an inelastic collision. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 40. If the velocity of an aircraft is doubled, the kinetic energy of the aircraft is also doubled. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 41. In a closed system, the kinetic energy plus the potential energy is a constant. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 42. A barrel rolling down an inclined ramp has only kinetic energy. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 43. What does it mean for a physical quantity in a system to be conserved? a. It is used in the most efficient manner possible. b. It stays in its original state forever. c. The total amount of it in the system stays constant. d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 44. Kinetic energy is conserved in a. an inelastic collision. b. an elastic collision. c. any collision where two objects rebound off each other. d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:55 PM 45. The linear momentum of a truck will be greater than that of a bus if a. the truck’s mass is larger than the bus’s but its speed is the same. b. the truck’s speed is larger than the bus’s but its mass is the same. c. the truck’s mass and speed are both larger than the bus’s. d. any of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:56 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws 46. What are the SI units of momentum? a. kg m/s b. pascals c. joules d. watts ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 47. Work is done on an object when a. it moves in a circle at constant speed. b. it is accelerated in a straight line. c. it is carried horizontally at constant speed. d. all of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:57 PM 48. If a force on an object is aimed opposite the direction of the object’s velocity, the force does a. no work. b. positive work. c. negative work. d. any of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:58 PM 49. If a force on an object is aimed in the direction of the object’s velocity, the force does a. no work. b. positive work. c. negative work.

d. any of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:58 PM 50. If a force on an object is aimed perpendicular to the direction of the object’s velocity, the force does Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws a. no work.

b. positive work.

c. negative work. d. any of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:59 PM

Consider a situation where two moving objects collide and rebound from each other.

51. Kinetic energy a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved, depending on the nature of the collision. d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Objects Collide Rebound DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:59 PM 52. Linear momentum a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved, depending on the nature of the collision. d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Objects Collide Rebound DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 9:59 PM Consider a situation where two moving objects collide, stick to each other, and move off together.

53. Kinetic energy a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved, depending on the nature of the collision. d. none of the above Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Objects Collide Stick DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:00 PM 54. Linear momentum a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved, depending on the nature of the collision. d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Objects Collide Stick DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:00 PM 55. Internal energy a. remains constant. b. decreases. c. increases. d. varies but in a way that cannot be predicted.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Objects Collide Stick DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:01 PM 56. Which of the following is not an example of potential energy? a. The energy stored in a pile driver. b. The energy stored in a stretched spring. c. The energy of a body moving across a horizontal surface. d. The energy in the water at the top of a waterfall.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 57. The energy of a ball rolling up an inclined plane a. is entirely kinetic. b. is entirely potential. c. is both kinetic and potential. d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:02 PM 58. For a body oscillating at the end of a spring, the energy is a. kinetic energy. b. elastic potential energy. c. gravitational potential energy. d. all of the above. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:03 PM Consider a situation where a skater pulls her arms inward, causing her rotation rate to speed up.

59. Angular momentum a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved. d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/14/2016 2:46 PM 60. Linear momentum Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved. d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:03 PM 61. Kinetic energy a. is definitely conserved. b. is definitely not conserved. c. may or may not be conserved. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:04 PM Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a

floor in a time interval t.

62. The quantity Fd is a. the kinetic energy of the crate. b. the potential energy of the crate. c. the linear momentum of the crate. d. the work you do on the crate. e. the power you supply to the crate.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:05 PM 63. The quantity 1/2 mv2 is Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws a. the kinetic energy of the crate. b. the potential energy of the crate. c. the linear momentum of the crate. d. the work you do on the crate. e. the power you supply to the crate.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:05 PM 64. The quantity Fd/t is a. the kinetic energy of the crate. b. the potential energy of the crate. c. the linear momentum of the crate. d. the work you do on the crate. e. the power you supply to the crate.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:06 PM 65. The quantity mv is a. the kinetic energy of the crate. b. the potential energy of the crate. c. the linear momentum of the crate. d. the work you do on the crate. e. the power you supply to the crate.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:06 PM 66. You carry a 20-N box 5 m horizontally across a room. The work you do is a. 0. b. 4 J. Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws c. 100 J.

d. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:07 PM Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.

67. The work you do is a. 0. b. 4 J. c. 100 J. d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:08 PM 68. The increase of potential energy of the box is a. 0. b. 4 J. c. 100 J. d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:09 PM 69. You drop the box. As it falls to its original level, its kinetic energy is a. 0. b. 4 J. c. 100 J.

d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:09 PM

Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3 seconds.

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Chapter 03: Energy and Conservation Laws 70. What is the impulse provided by the force? a. 150 N-s b. 50 N-s c. 75 N-s d. undetermined—not enough information given e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Constant Force 25N DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/14/2016 2:47 PM 71. What is the work done by the force? a. 150 J b. 50 J c. 75 J d. undetermined—not enough information given e. none of the above ANSWER: d RATIONALE: If one were told the object’s initial velocity then one could calculate the work done by using

the equations for constant acceleration to find the distance traveled.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Constant Force 25N DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 72. What is the magnitude of the change in the object’s momentum? a. 150 kg m/s b. 50 kg m/s c. 75 kg m/s d. undetermined—not enough information given e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Constant Force 25N DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE MODIFIED: 6/13/2016 10:29 AM 73. When we say work is done by a force, we mean the force does a. all the work. b. positive work. c. negative work. d. zero work.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:11 PM 74. When we say work is done against a force, we mean the force does a. none of the work. b. positive work. c. negative work. d. zero work.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:12 PM 75. Using a lever to move a rock reduces the force a person must exert. What does it do to the work the person

must do? a. it reduces the work also c. the work increases

b. the work stays the same d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 76. Which of the following quantities are conserved in an isolated system? a. mass b. energy c. momentum

d. all of the above

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 77. A 2-kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws m/s, and they stick together. After the collision, the velocity of the combined bodies is a. 0. b. 0.8 m/s towards the right. c. 0.8 m/s towards the left. d. 2.4 m/s towards the right. e. 2.4 m/s towards the left.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:14 PM 78. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the vertical height

of the stairs is 20 meters, the person’s power output is a. 0. b. 3 W. c. 30 W. d. 1,200 W. e. 12,000 W. ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:14 PM 79. After an elastic collision of two balls, the kinetic energies of the two balls are measured to be 12 J and 24 J.

What can be said about the kinetic energy of the two balls before the collision? a. nothing—not enough information is given b. the balls had the same energies, 12 J and 24 J, respectively c. the total kinetic energy of the two balls was 36 J d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:22 PM 80. About how many 100-W light bulbs would you have to light up to use energy at the rate of one horsepower? a. one or two b. seven or eight Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws c. the question doesn’t make sense—hp and W are unrelated d. dozens e. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:22 PM 81. A watt is equal to a. 746 horsepower. b. one calorie. c. one joule. d. 1 J/s. e. a unit of energy.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:14 PM 82. An object moving in a circle at a steady speed has a. constant linear momentum. b. constant angular momentum. c. constant velocity. d. constant acceleration.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:15 PM

A kid slides down an icy (frictionless) hill starting from rest. At the top his gravitational potential energy is 500 J. 83. His kinetic energy at the top of the hill is a. 0 J. b. 500 J. c. some value between 0 and 500 J. ANSWER: a He is at rest.

RATIONALE: Copyright Cengage Learning. Powered by Cognero.

d. none of the above.

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Chapter 03: Energy and Conservation Laws POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Kid Slides Down DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:16 PM 84. He slides part way down the hill to a point where his gravitational potential energy is 200 J. His

kinetic energy at that point will be a. 200 J. b. 300 J. c. some unknown value between 0 and 500 J. d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Kid Slides Down DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:16 PM 85. He slides all the way down to the valley bottom where his gravitational potential energy becomes zero. His

kinetic energy at the bottom will be a. 0 J. c. some value between 0 and 500 J.

b. 500 J. d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Kid Slides Down DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:17 PM 86. Suppose after reaching the bottom he then continues sliding up another icy slope on the other side of the

valley. When he finally comes to a stop he will have reached a height a. equal to the height he started from on the other hill. b. less than the height he started from on the other hill. c. more than the height he started from on the other hill. d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws PREFACE NAME: Kid Slides Down DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:17 PM 87. The mass of 1 m3 of fresh water is 1,000 kg. At the top of a hydroelectric dam the potential energy of the water is a. 1,000 N. b. 9,800 N. c. 500 N. d. There is not enough information to calculate the potential energy.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/14/2016 2:47 PM 88. The mass of 1 cubic meter of fresh water is 1,000 kg. At the top of a 100 m hydroelectric dam the potential energy of the cubic meter of water is a. 10,000 N. b. 98,000 N. c. 100,000 N. d. 980,000 N. ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:19 PM 89. The mass of 1 cubic meter of fresh water at the top of a 100 m hydroelectric dam is 1,000 kg and it has a potential energy of 980,000 N. At the bottom of the dam, the speed of the moving water is a. 9,800 m/s. b. 1,960 m/s. c. 44.3 m/s. d. 98 m/s.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:20 PM 90. A mechanic working on a 100-m radar tower drops a hammer weighing 44.5 N. The work done on the hammer as it falls is a. 4.45 N-m. b. 44.5 N-m. c. 445 N-m. d. 4,450 N-m.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE MODIFIED: 7/13/2016 10:20 PM 91. Linear momentum is conserved in a. an inelastic collision. b. an elastic collision. c. any collision where two objects rebound off each other. d. none of the above.

ANSWER: a, b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:21 PM 92. The total kinetic plus potential energy of a body a. can be negative. b. always stays constant if the body is freely falling. c. always stays constant if friction is acting. d. can remain constant even if the body’s speed is decreasing.

ANSWER: a, b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:21 PM 93. A barbell is easier to twist when its weights are a. close to the axis of rotation. b. near the ends of the bar. c. heavy. d. light. e. none of the above.

ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:22 PM Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.

94. After the dropped box hits the floor, its kinetic energy is a. 0.

Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws b. equal to its potential energy. c. is converted to internal energy. d. none of the above.

ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/13/2016 10:22 PM 95. In a collision the total ANSWER: linear momentum

is the same before and after.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 96. To be able to do work, a system must have ANSWER: energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

.

97. An object has kinetic energy when it is ANSWER: moving POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

.

98. Kinetic energy is conserved in ANSWER: elastic POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 99. Linear momentum is conserved in Copyright Cengage Learning. Powered by Cognero.

collisions.

collisions.

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Chapter 03: Energy and Conservation Laws ANSWER: all POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 100. The energy stored in a pile driver is an example of ANSWER: gravitational potential POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

energy.

101. The energy stored in a stretched spring is an example of ANSWER: elastic potential POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

energy.

102. The energy of a body moving across a horizontal surface is an example of ANSWER: kinetic POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 103. The energy in the water at the top of a waterfall is an example of ANSWER: gravitational potential POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 104. As a skier gains speed skiing down a slope, ANSWER: potential; kinetic

energy.

energy.

energy is being converted to

energy.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/15/2016 3:25 AM Consider a situation where a skater pulls her arms inward, causing her rotation rate to speed up.

105. Angular momentum conserved.

ANSWER: is POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 106. Linear momentum conserved.

ANSWER: is POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 107. Kinetic energy conserved.

ANSWER: is not POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Skater Pulls Arms DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a

floor in a time interval t.

108. The kinetic energy of the crate is ANSWER: 1/2 mv2

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 109. The potential energy of the crate is Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 03: Energy and Conservation Laws ANSWER: zero POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 110. The linear momentum of the crate is ANSWER: mv

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 111. The work you do on the crate is ANSWER: Fd

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 112. The power you supply to the crate is ANSWER: Fd/t POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Exert a Force DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

.

113. You carry a 20-N box 5 m horizontally across a room. The work you do is ANSWER: zero POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:24 PM

.

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.

Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws 114. The work you do is .

ANSWER: 100 J POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 115. The increase of potential energy of the box is ANSWER: 100 J POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

.

116. You drop the box. As it falls to its original level, its kinetic energy is ANSWER: 100 J POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 117. After you drop the box and it has fallen half way, its potential energy is

is ANSWER:

.

and its kinetic energy

.

50 J, 50 J

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 118. After the dropped box hits the floor, its kinetic energy is converted into ANSWER: internal energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Carry 20 N Box DATE CREATED: 6/13/2016 10:29 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 03: Energy and Conservation Laws DATE MODIFIED: 6/13/2016 10:29 AM 119. A 2-kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2

m/s, and they stick together. After the collision, the velocity of the combined bodies is pointing .

ANSWER: 0.8, towards the left

m/s

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:24 PM 120. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the vertical

height of the stairs is 20 meters, the person’s power output is ANSWER: 1,200 W

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 121. In a collision that is inelastic, the total ANSWER: kinetic energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM

after the collision is not the same as before the collision.

122. A worker on top of a radar tower 80 m high drops a wrench off the tower. The speed of the wrench when it hits the ground is ANSWER: 39.6 m/s POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 6/13/2016 10:29 AM 123. A hunter notches a 0.05-kg arrow in a compound bow and draws the arrow back to set the bow. The hunter does 50 J of work in the process setting the bow/arrow combination and then releases the arrow. The speed of the arrow is .

ANSWER: 44.7 m/s POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws DATE CREATED: 6/13/2016 10:29 AM DATE MODIFIED: 7/12/2016 12:24 PM 124. A light aircraft that weighs 1,600 N is accelerated at 8 m/s/s for 15 seconds. The work done on the aircraft is .

ANSWER: 1,175,510 J POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 125. A 50-kg ice skater moving at 6 m/s collides with a second stationary skater with mass 70 kg. The skaters

cling together after the collision and move without friction. Compute their speed after the collision.

ANSWER: 2.5 m/s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/12/2016 12:25 PM 126. A railroad car with a mass of 20,000 kg rolls into a second stationary car with a mass of 40,000 kg. The

cars latch together and move off with a speed of 1.2 m/s. How fast was the first car moving before the collision?

ANSWER: 3.6 m/s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 127. A mover slides a refrigerator 5 meters across a floor. If a force of 200 N was used, how much work was

done?

ANSWER: 1,000 J POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 128. A person with a mass of 60 kg climbs up to a diving board 4 meters above a swimming pool. (a) How much work does the person do? (b) What is the diver’s kinetic energy upon entering the water after diving off?

ANSWER: (a) 2,352 J, (b) 2,352 J POINTS: 1 QUESTION TYPE: Subjective Short Answer Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 3:26 AM 129. What is the kinetic energy of a 5,000-kg truck traveling at 25 m/s?

ANSWER: 1,562,500 J POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/12/2016 12:25 PM 130. A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. Assuming there is no

friction and the bottom of the hill is 20 meters below the top, what is the bicyclist’s speed at the bottom of the hill?

ANSWER: 19.8 m/s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 131. A ball is thrown straight upward with an initial speed of 30 m/s. Assuming there is no air resistance, how

high does the ball go before falling back down?

ANSWER: 45.9 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 132. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the vertical

height of the stairs is 20 meters, what is the person’s power output?

ANSWER: 1,200 W POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 133. A 15,000-watt motor is used to lift a 18,000 kg aircraft to a height of 10 m. How much time does it take to lift the aircraft with the motor?

ANSWER: 117.6 s POINTS: 1 QUESTION TYPE: Subjective Short Answer Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/12/2016 12:26 PM

Match each item with the correct statement below. a. angular momentum b. elastic collision c. elastic potential energy d. energy e. gravitational potential energy f. heat g. inelastic collision h. kinetic energy i. lever j. linear momentum k. power l. work m. internal energy QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 1:06 PM DATE MODIFIED: 6/15/2016 1:41 PM 134. type of collision in which kinetic energy is conserved ANSWER: b POINTS: 1 135. the rate of doing work ANSWER: k POINTS: 1 136. associated with circular motion ANSWER: a POINTS: 1 137. can be stored in a spring ANSWER: c POINTS: 1 138. energy due to motion ANSWER: h POINTS: 1 139. type of collision in which kinetic energy is not conserved ANSWER: h POINTS: 1 140. the mass of an object times its velocity ANSWER: j POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 03: Energy and Conservation Laws 141. the measure of a system’s capacity to do work ANSWER: d POINTS: 1 142. the energy source for a hydroelectric power station ANSWER: e POINTS: 1 143. the force that acts times the distance moved in the direction of the force ANSWER: l POINTS: 1 144. the type of energy contained in a compound bow when drawn to its maximum extension ANSWER: c POINTS: 1

Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter 1. A device that measures absolute air pressure is called a barometer. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 2. The difference between the pressures inside and outside a tire is called the absolute pressure. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 3. The SI unit of pressure is the pascal. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 4. psi is a unit of force. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 5. The four states of matter are solid, fluid, gas, and plasma. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

Page 1

Chapter 04: Physics of Matter POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 6. An ionized gas is called a plasma. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 7. A plasma will conduct electricity. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 8. Gases and liquids are both fluids. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 9. The upward force exerted by a fluid on an object immersed in it is called the buoyant pressure. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

Page 2

Chapter 04: Physics of Matter DATE MODIFIED: 6/13/2016 10:30 AM 10. When an object floats in a liquid, the buoyant force is larger than the weight of the object. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 11. The positively charged particle inside an atom is the nucleus. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 12. The uncharged particle inside an atom is a neutron. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 13. The central core inside an atom is the neutron. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 14. The particle that orbits the central core inside an atom is the electron. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 15. The number of protons in the nucleus of an atom tells which element it is. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 16. An atom having a single proton in its nucleus is a hydrogen atom. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 17. The element symbol C stands for cobalt. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 18. The buoyant force that keeps a ship afloat is an example of Pascal’s principle. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 19. The brakes in a car work because of Pascal’s principle. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 20. An atomizer works because of Bernoulli’s principle. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 21. A helium balloon rises because of Archimedes’ principle. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 22. Air can be compressed easily because there is a great deal of empty space between air molecules. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter 23. If the volume of a container is decreased while the mass and temperature of the gas inside it stay constant,

the pressure will increase. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 24. The air we breathe is mostly oxygen. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 25. The ratio of the density of a material to the density of water is the weight density. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 26. If the outside air pressure decreases, the reading on a tire gauge connected to a tire decreases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 27. Gravity causes the pressure in the ocean to vary with depth. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 28. Water is flowing through a pipe whose cross-sectional area at point A is larger than the cross-sectional area

at point B. The reading on a pressure gauge connected to the pipe at point A will be lower than the reading on a pressure gauge connected to the pipe at point B. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:13 PM 29. In a flowing fluid, the pressure where the fluid is moving slower is higher than the pressure where the fluid

is moving faster. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 30. The gauge pressure of the water in a swimming pool at 10 ft is twice the gauge pressure of the water at 5 ft. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 31. Atmospheric pressure at an altitude of 10,000 m is exactly half of what it is at 5,000 m. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.

32. The force on your left palm is twice than the force on your right palm. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Press a Stick DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 33. The pressure on your left palm is one half the pressure on your right palm. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Press a Stick DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 34. A person weighing 200 pounds stands on snowshoes. If the area of each snowshoe is 400 square inches, the

pressure on the snow is 0.25 psi. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 35. A tire pressure gauge reads 30 psi when the atmospheric pressure is 14 psi. The net force on 2 square

inches of the tire is 60 lbs. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 36. When a 4-cubic-ft block of wood floats in a fluid whose weight density is 60 pounds per cubic foot, 3/4 of

the block’s volume is submerged. The buoyant force on the block is 60 pounds. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/12/2016 12:28 PM

Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure.

The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.

37. The pressure on A1 is 4 psi. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 38. The pressure on A2 is 40 psi. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 39. The force F2 needed to keep piston 2 in place is 40 pounds. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 40. The altimeter in an aircraft is an aneroid barometer. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 41. You measure the pressure of a tire in Atlanta, GA and find it to be 35 psi. If the tire is taken to Denver, CO (with no other changes made) the pressure will read lower in Denver than in Atlanta. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter DATE MODIFIED: 6/13/2016 10:30 AM 42. Carburetors in NASCAR race cars make use of Bernoulli’s principle. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 43. Most modern aircraft use hydraulics systems to move the control surfaces on the aircraft. This is an example of using Bernoulli’s principle. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 44. The pressure exerted by a gas is the result of a. the Bernoulli effect. b. molecular collisions. c. Pascal’s principle. d. the ideal gas law. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:24 PM 45. A device that measures absolute air pressure is called a a. manometer. b. barometer. c. thermometer. d. tire gauge. e. none of the above ANSWER: b POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:24 PM 46. The difference between the pressures inside and outside a tire is called a. absolute pressure. b. gauge pressure. c. atmospheric pressure. d. psi. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:24 PM 47. Which of the following is not a unit of pressure? a. atmosphere b. psi c. N/m2 d. mm of mercury e. pascal f. none of the above ANSWER: f POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 48. If the same-sized force is made to act over a smaller area, the pressure is a. decreased. b. increased. c. unchanged. d. dependent upon the shape of the area.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter DATE MODIFIED: 7/13/2016 10:25 PM 49. A plasma state of matter is a. a conducting solid. b. a part of the blood. c. an ionized gas. d. a conducting liquid. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:25 PM 50. The upward force exerted by a fluid on an object immersed in it is called a. gravitational force. b. atmospheric force. c. buoyant force. d. weight. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:26 PM 51. When an object floats in a liquid, the buoyant force is a. equal to

the weight of the object.

b. larger than c. smaller than d. not related to ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 52. The positively charged particle inside an atom is a. the electron. b. the proton.

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Page 13

Chapter 04: Physics of Matter c. the neutron. d. the nucleus. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:27 PM 53. The uncharged particle inside an atom is a. the electron. b. the proton. c. the neutron. d. the nucleus. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:27 PM 54. The central core inside an atom is a. the electron. b. the proton. c. the neutron. d. the nucleus. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:28 PM 55. The particle that orbits the central core inside an atom is a. the electron. b. the proton. c. the neutron. d. the nucleus. e. none of the above.

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Chapter 04: Physics of Matter ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:28 PM 56. About how big is an atom? a. too small to measure b. about a millionth of a meter across c. about a billionth of a meter across d. about a trillionth of a meter across e. none of the above ANSWER: e RATIONALE: It’s about a tenth of a billionth of a meter.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 57. The molecule is the basic unit of all a. elements. b. compounds. c. mixtures. d. solutions.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:28 PM 58. DNA is a complex a. atom. b. molecule. c. life form. d. mystery. e. acronym.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:29 PM Copyright Cengage Learning. Powered by Cognero.

Page 15

Chapter 04: Physics of Matter 59. In the chemical formula for water, H2O, what does the “2” mean? a. There are two oxygen (O) atoms in a molecule of water. b. There are two hydrogen (H) atoms in a molecule of water. c. The hydrogen in water is actually deuterium. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 60. What elements do the symbols H, O, C, and N stand for? a. hydrogen, ozone, carbon, nitrogen b. hydrogen, oxygen, chlorine, nitrogen c. hydrogen, oxygen, carbon, natrium d. hydrogen, oxygen, carbon, nitrogen e. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 61. What elements do the symbols Fe, Na, Au, and Hg stand for? a. aluminum, nitrogen, silver, tungsten b. iron, sulfur, silver, ytterbium c. iron, sodium, silver, mercury d. iron, sodium, gold, mercury e. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 62. How many elements have been identified? a. 92 b. 104 Copyright Cengage Learning. Powered by Cognero.

Page 16

Chapter 04: Physics of Matter c. 114 d. over 200 e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 63. The buoyant force that keeps a ship afloat is an example of a. Archimedes’ principle. b. Pascal’s principle. c. Bernoulli’s principle. d. Torricelli’s principle. e. none of these principles.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:29 PM 64. The brakes in a car work because of a. Archimedes’ principle. b. Pascal’s principle. c. Bernoulli’s principle. d. Torricelli’s principle. e. none of these principles.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:29 PM 65. An atomizer works because of a. Archimedes’ principle. b. Pascal’s principle. c. Bernoulli’s principle. d. Torricelli’s principle. e. none of these principles.

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Page 17

Chapter 04: Physics of Matter ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:30 PM 66. A helium balloon rises because of a. Archimedes’ principle. b. Pascal’s principle. c. Bernoulli’s principle. d. Torricelli’s principle. e. none of these principles.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:39 PM 67. Two inflated balloons are of identical size and shape, but one is filled with hydrogen, the other helium.

Which has the larger buoyant force on it? a. neither—the buoyant forces must be equal b. the helium balloon c. the hydrogen balloon d. It can’t be determined.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 68. When you suck through a straw, the force that makes the liquid go up the straw is a. a suction force. b. due to surface tension. c. due to the pressure of the atmosphere. d. antigravity.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

Page 18

Chapter 04: Physics of Matter DATE MODIFIED: 7/13/2016 10:30 PM 69. The ratio of the density of a material to the density of water is a. the mass density. b. the weight density. c. the specific gravity. d. the buoyant force. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:31 PM 70. A solid object labeled A weighs more than another solid object labeled B. Which of the following are true? a. A occupies more volume than B. b. A has a greater weight density than B. c. A has a greater specific gravity than B. d. A has greater volume but lesser weight density than B. e. none of the above ANSWER: e RATIONALE: A and B are not necessarily made of the same substance.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 71. If the outside air pressure decreases, the reading on a tire gauge connected to a tire a. stays the same. b. increases. c. decreases. d. can not be determined.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/13/2016 10:31 PM 72. Water is flowing through a pipe whose cross-sectional area at point A is larger than the cross-sectional

area at point B. The reading on a pressure gauge connected to the pipe at point A will be Copyright Cengage Learning. Powered by Cognero.

the Page 19

Chapter 04: Physics of Matter reading

Copyright Cengage Learning. Powered by Cognero.

Page 20

Chapter 04: Physics of Matter on a pressure gauge connected to the pipe at point B. a. the same as b. higher than c. lower than d. unrelated to ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:13 PM 73. The gauge pressure of the water in a swimming pool at 10 ft is

the gauge pressure of the

water at 5 ft. a. 1/4 b. 1/2 c. equal to d. 2 times e. 4 times ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 74. The pressure at the bottom of aquarium A is greater than that at the bottom of aquarium B. Why might this

be? a. A is filled with fresh water, B has the same amount of salt water. b. A is filled to a greater depth than B. c. A has greater volume than B. d. The bottom of aquarium A has smaller area than that of B. e. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 75. When people get into a small boat it settles lower in the water and a. the buoyant force increases as a result of more water being displaced. b. the net force on the boat again becomes zero. c. the pressure on the bottom of the boat becomes greater because it is deeper in the water. d. all of the above.

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Chapter 04: Physics of Matter ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:39 PM

You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.

76. The force on your left palm is a. 1/4

the force on your right palm.

b. 1/2 c. equal to d. 2 times e. 4 times ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Press a Stick DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 77. The pressure on your left palm is a. 1/4

the pressure on your right palm.

b. 1/2 c. equal to d. 2 times e. 4 times ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Press a Stick DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 78. A person weighing 200 pounds stands on snowshoes. If the area of each snowshoe is 400 square inches, the

pressure on the snow is a. 0.25 psi. b. 0.5 psi. c. 2 psi.

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Chapter 04: Physics of Matter d. 4 psi. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:40 PM 79. A tire pressure gauge reads 30 psi when the atmospheric pressure is 14 psi. The net force on 2 square

inches of the tire is a. 28 lbs. b. 32 lbs. c. 60 lbs. d. 88 lbs. e. none of these.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:40 PM 80. When a 4-cubic-ft block of wood floats in a fluid whose weight density is 60 pounds per cubic foot, 3/4 of

the block’s volume is submerged. The buoyant force on the block is a. 60 lbs. b. 120 lbs. c. 180 lbs. d. 240 lbs. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:40 PM

Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure.

The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.

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Chapter 04: Physics of Matter

81. The pressure on A1 in psi is a. 0.25. b. 0.4. c. 4. d. 10. e. 40.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:41 PM 82. The pressure on A2 in psi is a. 0.25. b. 0.4. c. 4. d. 10. e. 40.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:41 PM 83. The force F2 in pounds needed to keep piston 2 in place is Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter a. 0.25. b. 0.4. c. 4. d. 10. e. 40.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:41 PM 84. If pressure inside a cylinder with a circular hatch is 2 atm and the radius of the entrance hatch is 12 inches, what force does the air exert on the hatch? Recall that the area of a circle is πr2 a. 24 lb c. 904.8 lb e. 13,300.6 lb ANSWER: RATIONALE:

b. 288 lb d. 1,300.6 lb e

P = 2 atm = 2 × 14.7 psi and A = πr2 = 3.1416 × 144 in2. F=PA POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:16 PM 85. The cabin pressure of a passenger jet cruising at high altitude (30,000 ft) is about 1 atm. and the pressure outside is about 0.3 atm. What is the outward force on a window measuring 1 foot by 1 foot. a. 10.3 lb b. 100.3 lb c. 1,000.3 lb d. 1,481.8 lb e. 2,116.8 lb ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 86. The absolute pressure is a. the gauge pressure plus 1 atmosphere. c. the gauge pressure minus the atmospheric pressure.

ANSWER: b POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

b. the gauge pressure plus the atmospheric pressure. d. the atmospheric pressure plus 14.7 psi.

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Chapter 04: Physics of Matter QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:42 PM 87. The hydraulic system in modern aircraft is an example of: a. Bernoulli’s principle. b. Pascal’s principle. c. Archimedes’ principle. d. Galileo’s principle.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:42 PM 88. Normal atmospheric pressure is a. 14.7 psi. b. 1 N/m2. c. zero. d. 760 mm of mercury. e. 101,000 pascals. f. none of the above.

ANSWER: a, d, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:42 PM 89. The nucleus of an atom contains a. protons. b. neutrons. c. electrons.

d. all of the above.

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:43 PM 90. The absolute pressure depends on a. the weight of the fluid. b. the atmospheric pressure. c. the cross-sectional area. d. the gauge pressure.

ANSWER: b, d Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:43 PM 91. A device that measures absolute air pressure is called a ANSWER: barometer

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 92. The difference between the pressures inside and outside a tire is called ANSWER: gauge pressure

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 93. The SI unit of pressure is ANSWER: N/m2 or pascal

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 94. The four states of matter are , ANSWER: solid, liquid, gas, plasma

,

, and

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 95. An ionized gas is a state of matter called a ANSWER: plasma POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 04: Physics of Matter DATE MODIFIED: 6/13/2016 10:30 AM 96. The three common phases of matter on Earth are ANSWER: solid, liquid, gas POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:19 PM

,

, and

.

97. When a liquid boils and changes to a gas, it is said to have undergone a change of ANSWER: phase POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

98. Graphite, diamond, and buckminsterfullerene are different forms of the element ANSWER: carbon POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:19 PM 99. The upward force exerted by a fluid on an object immersed in it is called ANSWER: buoyant force POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 100. When an object floats in a liquid, the buoyant force is ANSWER: equal to

.

.

the weight of the object.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 101. When an object floats in a liquid, the buoyant force is

the weight of the liquid displaced by the

object.

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Chapter 04: Physics of Matter ANSWER:

equal to

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 102. The buoyant force that keeps a ship afloat is an example of ANSWER: Archimedes’

principle.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 103. The brakes in a car work because of ANSWER: Pascal’s

principle.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 104. An atomizer works because of ANSWER: Bernoulli’s POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 105. A helium balloon rises because of ANSWER: Archimedes’

principle.

principle.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 106. The mass density of an object equals its ANSWER: mass, volume

divided by its

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 107. The ratio of the density of a material to the density of water is the ANSWER: specific gravity

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 108. The pressure exerted by a gas is the result of ANSWER: molecular collisions

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 109. Normal atmospheric pressure is about ANSWER: 14.7 psi, 101,000 Pa, 760 mm Hg POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

110. If the outside air pressure decreases, the reading on a tire gauge connected to a tire ANSWER: increases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

111. Water is flowing through a pipe whose cross sectional area at point A is larger than the cross sectional area

at point B. The reading on a pressure gauge connected to the pipe at point A will be a pressure gauge connected to the pipe at point B. ANSWER: higher than

the reading on

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter 112. The gauge pressure of the water in a swimming pool at 10 ft is

the gauge pressure of the water

at 5 ft.

ANSWER:

twice

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.

113. The force on your left palm is ANSWER: equal to

the force on your right palm.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Press a Stick DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 114. The pressure on your left palm is ANSWER: one half POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Press a Stick DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

the pressure on your right palm.

115. A person weighing 200 pounds stands on snowshoes. If the area of each snowshoe is 400 square inches, the

pressure on the snow is ANSWER: 0.25

psi.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 116. A tire pressure gauge reads 30 psi when the atmospheric pressure is 14 psi. The net force on 2

square inches of the tire is ANSWER: 60 lbs

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

Page 31

Chapter 04: Physics of Matter DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 117. When a 4-cubic-ft block of wood floats in a fluid whose weight density is 60 pounds per cubic foot, 3/4 of

the block’s volume is submerged. The buoyant force on the block is ANSWER: 180 lbs

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/12/2016 12:30 PM

Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure.

The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.

118. The pressure on A1 is ANSWER: 4 psi

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 119. The pressure on A2 is ANSWER: 4 psi

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down Copyright Cengage Learning. Powered by Cognero.

Page 32

Chapter 04: Physics of Matter DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 120. The force F2 needed to keep piston 2 in place is ANSWER: 40 lbs

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Two Pistons Push Down DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 121. As an aircraft gains altitude, the outside air pressure ANSWER: decreases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

with height.

122. As a pressurized aircraft gains altitude, the difference between the outside air pressure and the pressure inside the aircraft with height ANSWER: increases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:20 PM 123. As a pressurized aircraft gains altitude, the force acting on the boarding door due to the difference between the outside air pressure and the pressure inside the aircraft with height ANSWER: increases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 124. A person weighing 180 pounds stands on snowshoes. If the total area of the 2 snowshoes is 900 square

inches, what is the pressure on the snow?

ANSWER: 0.2 psi POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter DATE MODIFIED: 6/13/2016 10:30 AM 125. The gauge pressure inside a pressure cooker is 13 psi. What is the net force on the lid of the

pressure cooker if the lid’s area is 110 square inches?

ANSWER: 1430 lb POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 126. A rock brought back from the Moon weighs 4 pounds and has a volume of 0.02 cubic feet. What is the

rock’s weight density?

ANSWER:

200 lb/ft3

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:21 PM 127. A rectangular stack of lead bricks measures 2 m by 3 m by 4 m. The mass density of lead is 11,340

kilograms per cubic meter. What is the total mass of the stack of lead?

ANSWER: 272,160 kg POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 128. A submarine dives to a depth of 50 meters in the ocean.

(a) What is the gauge pressure at this depth? (b) What is the force acting on a hatch that has an area of 2.5 square meters?

ANSWER: (a) 490,000 Pa, (b) 1,225,000 N POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 129. The body of a swimmer occupies a volume of 2 cubic feet. What is the buoyant force when the swimmer is

immersed in water? (The weight density of water is 62.4 pounds per cubic foot.)

ANSWER: 124.8 lb POINTS: 1 QUESTION TYPE: Subjective Short Answer Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 130. A gold brick measuring 0.25 ft by 0.33 ft by 1 ft is submerged in water. The weight density of gold is 1,200

pounds per cubic foot and the weight density of water is 62.4 pounds per cubic foot. (a) What is the weight of the gold brick? (b) What is the buoyant force on the gold brick? (c) What is the net force on the gold brick?

ANSWER: (a) 99 lb, (b) 5 lb, (c) 94 lb POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 131. The cabin pressure of a passenger jet cruising at high altitude (30,000 ft) is about 1 atm. and the pressure outside is about 0.3 atm. What is the outward force acting on a door measuring 1 meter by 2 meters? (Hint: convert metric to English units in this problem using the conversion factor m2 to ft2 in the Table of Conversion Factors) ANSWER: 32,037.1 lb POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

Match each item with the correct statement below. a. absolute pressure b. atom c. atmosphere d. barometer e. buoyant force f. electron g. gas h. gauge pressure i. liquid j. mixture k. molecule l. neutron m. plasma n. proton o. specific gravity QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 1:21 PM DATE MODIFIED: 6/15/2016 1:40 PM 132. a device that measures air pressure ANSWER: d POINTS: 1 133. an ionized gas Copyright Cengage Learning. Powered by Cognero.

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Chapter 04: Physics of Matter ANSWER: m POINTS: 1 134. each is composed of two or more atoms ANSWER: k POINTS: 1 135. the relative pressure between two places ANSWER: h POINTS: 1 136. a combination of different elements or compounds ANSWER: j POINTS: 1 137. the upward force exerted by a fluid on anything immersed in it ANSWER: e POINTS: 1 138. the smallest unit of a chemical element ANSWER: b POINTS: 1 139. the mass density of a substance divided by the mass density of water ANSWER: o POINTS: 1 140. particle that orbits the nucleus in an atom ANSWER: f POINTS: 1 141. a unit of measure for pressure ANSWER: c POINTS: 1 142. a constituent part of the nucleus of an atom ANSWER: n POINTS: 1

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Chapter 05: Temperature and Heat 1. Heat is transferred from a substance if it is exposed to something that has a lower temperature. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 2. A barometer can work because of a bimetallic strip. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 3. One “food calorie” equals 1000 calories. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 4. A thermostat can work because of a bimetallic strip. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 5. A bimetallic strip is formed from two materials that have different heat capacities. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 6. Celsius degrees are larger than Fahrenheit degrees. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 7. A hot pizza contains heat. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 8. On the Kelvin scale the temperature is proportional to the average kinetic energy of the atoms or

molecules whose temperature is being measured. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 9. When you hold one end of a solid rod in a fire, the other end becomes hot because of heat convection. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 10. You feel warm from the Sun at the beach because of heat radiation. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:27 PM 11. A wood stove in the corner of a cabin causes the entire cabin to become heated because of heat conduction. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 12. A bimetallic strip is usable in a thermometer because of its heat capacity. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 13. A refrigerator is an example of a heat mover. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 14. As the air cools at night the relative humidity usually drops.

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Chapter 05: Temperature and Heat a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 15. A steam turbine is an example of a heat mover. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 16. You can increase the internal energy of a gas by heating it or by compressing it. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 17. Natural processes tend to increase the entropy of thermodynamic systems. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 18. The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass rod

and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water. The change in length of the ordinary glass rod will be 3 times the change in length of the Pyrex glass rod. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 19. The specific heat capacity of copper is three times the specific heat capacity of lead. Equal masses of copper

and lead are heated from room temperature to the temperature of boiling water. To achieve this, the amount of heat added to the copper is 3 times the amount of heat added to the lead. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 20. When ice melts, its temperature increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 21. When you add heat to ice, its temperature always stays constant. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 22. When water boils, its temperature increases. a. True b. False ANSWER: False POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 23. Water is good for putting out fires because it has a very high latent heat of vaporization. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 24. The specific heat capacity of water is about twice the specific heat capacity of ice. The amount of heat

required to boil 1 kg of water is twice the amount of heat required to melt 1 kg of ice. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 25. The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of

heat required to boil away 1 kg of water is 10 times the amount of heat required to melt 1 kg of ice. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 26. You can increase the temperature of a gas by compressing it. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 27. A liquid cannot be heated simultaneously by conduction, convection, and radiation. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C 28. A 1 kg block of ice is removed from a freezer where its temperature was –10°C. The amount of heat

absorbed by the ice as it warms to 0°C is 20,000 J. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 29. The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is 334,000 J. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 30. As the ice is melting, the temperature of the ice-water mixture rises by 10°C. a. True b. False ANSWER: False POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 31. After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10°C is 3,340,000 J. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 32. The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10 ×

10−6/°C. On a cold day when the temperature is −10°C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40°C is 300.15 m. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 33. At 96°F the saturation density of air is 0.04 kg/m3. If the weather report says the relative humidity is 90%

when the temperature is 96°F, the humidity is 0.036 kg/m3. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 34. Air at a temperature of 32°F has a relative humidity of 60%. If the temperature of the same air increases,

the relative humidity increases. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 35. In a steam engine, steam at 140°C in a turbine does work on an external system, and the steam leaves the

turbine at 100°C. The efficiency of the steam engine is 5%. The relevant physical principle is the first law of thermodynamics. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 36. A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the

gas rises. This is governed by the second law of thermodynamics. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 37. Temperature is a measure of heat. a. True b. False ANSWER: False Temperature is the average kinetic energy of the constituent particles RATIONALE: POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 38. Evaporation is when a gas is converted into a liquid. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 39. The dew point is the temperature at which a given humidity equals the saturation density. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 40. Internal energy can only be changed by adding heat a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 41. When a substance is exposed to something that has a lower temperature, a. work is done on it. b. work is done by it. c. heat is transferred from it. d. heat is transferred to it. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 12:59 AM 42. Which is larger, a calorie or a joule? a. calorie b. joule c. Neither—they are the same.

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Chapter 05: Temperature and Heat d. They cannot be compared since they measure different physical quantities.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 43. One “food calorie” equals a. 1 calorie. b. 100 calories. c. 1000 calories.

d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:00 AM 44. A device that makes use of a bimetallic strip is a. a thermometer. b. a thermostat. c. a choke control in an old automobile. d. all of the above. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:35 PM 45. A bimetallic strip is formed from two materials that have different a. coefficients of linear expansion. b. heat capacities. c. calories. d. phase transitions. e. relative humidities.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:01 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat 46. A key is placed in a hot oven and warmed to 100°C. As a result a. the hole in the key becomes smaller. b. the key is bent into an arc. c. the key becomes longer. d. all of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:02 AM 47. The temperature scale where the numerical value is proportional to the average kinetic energy of the

atoms or molecules is a. Fahrenheit. b. Celsius. c. Kelvin. d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:02 AM 48. Which are bigger—Celsius degrees or Fahrenheit degrees? a. Fahrenheit b. Celsius c. Neither—they are the same size. d. This is a nonsensical comparison.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 49. Which of these is stated properly? a. “The temperature of liquid nitrogen is 77 Kelvin.” b. “The temperature of liquid nitrogen is 77 Kelvins.” c. “The temperature of liquid nitrogen is 77 degrees Kelvin.” d. “The temperature of liquid nitrogen is 77 Kelvin degrees.”

ANSWER: POINTS:

b 1

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Chapter 05: Temperature and Heat QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 50. Temperature measures a. how much heat is in a substance. b. the internal energy of an object. c. the average speed of atoms and molecules in a substance. d. the average kinetic energy of atoms and molecules in a substance.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:03 AM 51. In a gas of different types of molecules all at the same temperature, the speeds of the heavier molecules will

generally be a. the same as c. less than

the speeds of the lighter molecules. b. greater than d. unrelated to

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 52. You hold one end of a solid rod in a fire, and the other end becomes hot. This is an example of a. heat conduction. b. heat convection. c. heat radiation. d. thermal expansion. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:03 AM 53. The warmth you feel from the Sun at the beach is an example of a. heat conduction.

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Chapter 05: Temperature and Heat b. heat convection. c. heat radiation. d. thermal expansion. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:04 AM 54. A wood stove in the corner of a cabin causes the entire cabin to become heated. This is an example of a. heat conduction. b. heat convection. c. heat radiation. d. thermal expansion. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:04 AM 55. A piece of chocolate melts in your mouth. This is an example of a. heat conduction. b. heat convection. c. heat radiation. d. thermal expansion. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:05 AM 56. The lunar surface cools after the Sun sets. This is an example of a. heat conduction. b. heat convection. c. heat radiation. d. thermal expansion.

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Chapter 05: Temperature and Heat e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:05 AM 57. “Firewalkers” step on the hot ashes and coals from a wood fire without getting their feet burned. How

might this be possible? a. They have magical powers. b. The ashes are poor conductors of heat. c. They do get burned but enjoy the publicity. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 58. A bimetallic strip is usable as a thermometer because of a. heat conduction. b. heat convection. c. heat radiation. d. thermal expansion. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:05 AM 59. An example of a heat mover is a. a refrigerator. b. an air conditioner. c. a heat pump. d. all of the above. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:06 AM 60. The amount of heat energy a refrigerator removes from the food stored inside it is

the amount

of electrical energy required to run the refrigerator. a. equal to b. greater than c. less than d. unrelated to ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 61. A hot pizza contains a. heat. b. internal energy. c. temperature. d. work. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:06 AM 62. The total kinetic and potential energies of all the atoms and molecules of a substance is its a. heat. b. internal energy. c. temperature. d. thermodynamics. e. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:07 AM 63. The change in size of an object due to thermal expansion depends upon a. what the object is made of.

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Chapter 05: Temperature and Heat b. the object’s original size. c. how much the temperature changes. d. A and C. e. all of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:07 AM 64. The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass rod

and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water. The change in length of the ordinary glass rod will be the change in length of the Pyrex glass rod. a. 1/9 b. 1/3 c. equal to d. 3 times e. 9 times ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 65. The specific heat capacity of copper is three times the specific heat capacity of lead. Equal masses of copper

and lead are heated from room temperature to the temperature of boiling water. To achieve this, the amount of heat added to the copper is the amount of heat added to the lead. a. 1/9 b. 1/3 c. equal to d. 3 times e. 9 times ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 66. When ice melts, its temperature a. increases. b. decreases.

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Chapter 05: Temperature and Heat c. stays constant.

d. cannot be determined.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:08 AM 67. When water boils, its temperature a. increases. b. decreases. c. stays constant.

d. cannot be determined.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:08 AM 68. When droplets of condensation form on the outside of a glass of ice water, it must be that in the air right

next to the glass a. the temperature is near the dew point. b. the humidity is near the saturation density. c. the relative humidity is near 100%. d. all of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:08 AM 69. Natural processes tend to increase the a. temperature b. internal energy

of thermodynamic systems.

c. Carnot efficiency d. entropy ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 70. What’s wrong with the statement “heat rises?” a. Nothing—heat does rise.

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Chapter 05: Temperature and Heat b. One should say “energy rises.” c. One should say “heated air (or other fluid) rises.” d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 71. The specific heat capacity of water is about twice the specific heat capacity of ice. From this information,

the amount of heat required to boil 1 kg of water is a. 1/2 b. equal to c. 2 times d. unrelated to

the amount of heat required to melt 1 kg of ice.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 72. The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of

heat required to boil away 1 kg of water is a. one tenth b. equal to c. 10 times d. unrelated to

the amount of heat required to melt 1 kg of ice.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 73. The temperature of a gas can be increased by a. compressing it. b. adding heat to it. c. doing work on it. d. all of the above. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:09 AM 74. Which mechanism(s) of heat transfer will work in a vacuum? a. conduction b. convection c. radiation d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C 75. A 1 kg block of ice is removed from a freezer where its temperature was –10°C. The amount of heat

absorbed by the ice as it warms to 0°C is a. 2,000 J. b. 4,000 J. c. 20,000 J. d. 40,000 J. e. 334,000 J. ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:09 AM 76. The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is a. 2,000 J. b. 4,000 J. c. 20,000 J. d. 40,000 J. e. 334,000 J. ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:10 AM 77. As the ice is melting, the temperature of the ice-water mixture rises by a. 0°C. b. +5°C. c. –5°C. d. +10°C. e. –10°C. ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:10 AM 78. After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10 °C is a. 2,000 J. b. 4,000 J. c. 20,000 J. d. 40,000 J. e. 334,000 J. ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:10 AM 79. The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10 ×

10−6/°C. On a cold day when the temperature is –10°C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40°C is a. 300.0015 m. b. 300.015 m. c. 300.15 m. d. 301.5 m. e. 315 m.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:11 AM 80. Why do bridges have expansion joints? a. They would buckle and crack otherwise. b. to let water run off c. to absorb vibrations due to traffic d. for ease in construction ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 81. At 96° F the saturation density of air is 0.04 kg/m3. If the weather report says the relative humidity is 90 %

when the temperature is 96°F, the humidity is a. 10 %. b. 0.9. c 0.004 kg/m3. d 0.036 kg/m3. e 0.04 kg/m3.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:12 AM 82. Air at a temperature of 32° F has a relative humidity of 60%. If the temperature of the same air rises to 40°

F, the relative humidity a. stays the same. b. increases. c. decreases. d. cannot be determined.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:12 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat 83. Even when the temperature of a pan of water is below the boiling point, some water still evaporates. This is

because a. of convection. b. the kinetic energies of individual water molecules vary above and below the average value. c. the humidity always increases. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:13 AM 84. In a steam engine, steam at 140°C in a turbine does work on an external system, and the steam leaves the

turbine at 100°C. The efficiency of the steam engine is 5%. The relevant physical principle is a. the first law of thermodynamics. b. the second law of thermodynamics. c. specific heat capacity. d. operation of a heat pump. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:13 AM 85. The efficiency of a heat engine a. can never exceed the Carnot efficiency. b. can be improved by lowering the temperature of the cool reservoir. c. can be improved by raising the temperature of the hot reservoir. d. all of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:13 AM 86. A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the

gas rises. The amount of temperature rise is governed by a. the first law of thermodynamics. b. the second law of thermodynamics.

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Chapter 05: Temperature and Heat c. specific heat capacity. d. a heat pump. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:14 AM 87. Heat transfer by radiation occurs via a. electromagnetic waves. b. nuclear decay. c. molecular collisions. d. the solar wind. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:14 AM 88. Heat flows from a. cold to hot. b. hot to cold. c. Kelvin to Celsius. d. the same as temperature.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:14 AM 89. As long as there is ice in your drink, the temperature of the ice remains near a. room temperature. b. the temperature of the drink. c. zero Celsius. d. zero Fahrenheit.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:36 PM 90. The specific heat capacity of a substance is the amount of energy required to raise 1 kg of the substance by a Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat temperature of a. 1°F. b. 10 °C. c. 10 °F. d. 1°C. ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:15 AM 91. In the first law of thermodynamics, the work can be a. only positive. b. only negative. c. neither. d. either positive or negative.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:37 PM 92. Absolute zero is a. 0 K. c. – 273.15°C.

b. – 459.67°F. d. 0 on any temperature scale.

ANSWER: a, b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 2:37 PM 93. Stepping barefoot off a rug onto a hardwood floor makes your feet feel cold. Why? a. The hardwood floor is at a lower temperature than the rug. b. The hardwood floor is at a lower temperature than your feet. c. The hardwood floor conducts heat away from your feet better than the rug. d. all of the above ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 94. Solar energy a. is a recent invention.

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Chapter 05: Temperature and Heat b. has been used for a long time. c. has not yet been successfully developed. d. is indirectly the source of most of the energy we use.

ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:16 AM 95. The internal energy of air can be increased by a. compressing it. b. allowing heat to flow into it. c. lifting it.

d. allowing it to expand.

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:16 AM 96. The internal energy of a substance can be increased by a. doing work on it. b. letting it do work. c. adding heat to it. d. extracting heat from it. e. none of the above.

ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:16 AM 97. Internal energy in a system can be changed by a. doing work on the system. b. increasing the specific heat in the system. c. changing the temperature of the system. d. transferring heat to/from the system.

ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/14/2016 1:17 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat 98. The average kinetic energy of the atoms in a spoon determines its ANSWER: temperature

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 99. The first law of thermodynamics is basically a special version of the law of ANSWER: conservation of energy

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 100. Two devices that make use of a bimetallic strip are a and a ANSWER: thermometer, thermostat, choke control in an old automobile POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 101. A bimetallic strip is formed from two materials that have different ANSWER: coefficients of linear expansion POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 102. The lowest temperature is called ANSWER: absolute zero

.

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 103. The temperature scale where the numerical value is proportional to the average kinetic energy of the

atoms or molecules is .

ANSWER: Kelvin POINTS:

1

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Chapter 05: Temperature and Heat QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 104. You hold one end of a solid rod in a fire, and the other end becomes hot. This is an example of

.

ANSWER: heat conduction POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 105. The warmth you feel from the Sun at the beach is an example of ANSWER: heat radiation POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/15/2016 1:28 PM

.

106. A wood stove in the corner of a cabin causes the entire cabin to become heated. This is an example of

.

ANSWER: heat convection POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 107. As the air cools at night the relative humidity usually ANSWER: increases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 108. A hot pizza contains ANSWER: internal energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False

.

.

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Chapter 05: Temperature and Heat DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 109. Heating the air in a hot air balloon reduces the air’s ANSWER: density POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

110. A bimetallic strip is usable as a thermometer because of the property of ANSWER: thermal expansion POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 111. Three examples of a heat mover are , ANSWER: refrigerator, air conditioner, heat pump

, and

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 112. Two ways that the internal energy of a substance can be increased are ANSWER: doing work on it, adding heat to it POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

and

.

113. is transferred from a substance if it is exposed to something that has a lower temperature.

ANSWER: heat POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 114. The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass

rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water. The change Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat in

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Chapter 05: Temperature and Heat length of the ordinary glass rod will be

times the change in length of the Pyrex glass rod.

ANSWER: three POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 115. The specific heat capacity of copper is three times the specific heat capacity of lead. Equal masses of

copper and lead are heated from room temperature to the temperature of boiling water. To achieve this, the amount of heat added to the copper is times the amount of heat added to the lead.

ANSWER: three POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 116. When ice melts, its temperature ANSWER: stays constant POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 117. When water boils, its temperature ANSWER: stays constant POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

.

118. The specific heat capacity of water is about twice the specific heat capacity of ice. The amount of heat

required to raise the temperature of 1 kg of water 10°C is raise the temperature of 1 kg of ice 10°C.

times the amount of heat required to

ANSWER: two POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 119. The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat of heat required to boil 1 kg of water is

times the amount of heat required to melt 1 kg of ice.

ANSWER: ten POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 120. Two ways that the temperature of a gas can be increased are by ANSWER: compressing it, adding heat to it

and

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 121. Natural processes tend to increase the ANSWER: entropy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

of thermodynamic systems.

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C 122. A 1 kg block of ice is removed from a freezer where its temperature was –10°C. The amount of heat

absorbed by the ice as it warms to 0°C is

.

ANSWER: 20,000 J POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 123. The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is ANSWER: 334,000 J POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 05: Temperature and Heat DATE MODIFIED: 6/13/2016 10:30 AM 124. As the ice is melting, the temperature of the ice-water mixture rises by ANSWER: zero POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

125. After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10°C is

.

ANSWER:

40,000 J

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: Specific Heat Capacity DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 126. The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10

× 10−6/°C. On a cold day when the temperature is –10°C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40°C is .

ANSWER: 300.15 m POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 7/12/2016 12:32 PM 127. At 96°F the saturation density of air is 0.04 kg/m3. If the weather report says the relative humidity is 90%

when the temperature is 96°F, the humidity is ANSWER:

.

3

0.036 kg/m

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 128. In a steam engine, steam at 140°C in a turbine does work on an external system, and the steam leaves the

turbine at 100°C. The efficiency of the steam engine is 5%. The relevant physical principle is the law of thermodynamics.

ANSWER:

second

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Chapter 05: Temperature and Heat POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 129. The air temperature where the humidity reaches the saturation density is called the ANSWER: dew point POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

130. A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the

gas rises. This is governed by the

law of thermodynamics.

ANSWER: first POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 131. A material through which heat conducts slowly is called a ANSWER: thermal insulator POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM

.

132. An object transfers heat when its temperature is raised by contact with a ANSWER: hotter object.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 133. An object transfers heat when its temperature is lowered by contact with ANSWER: a cooler object.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat DATE MODIFIED: 6/13/2016 10:30 AM 134. At temperatures below their boiling point, liquids gradually go into the gas phase through a process called ANSWER: evaporation POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 135. The Eiffel tower in Paris is 300 meters tall on a cold day (T = – 5 degrees Celsius). What is its height on a

hot day when the temperature is 35 degrees? (It is made of iron which has a coefficient of linear expansion of 0.000012 per degree Celsius.)

ANSWER: 300.144 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 136. The air inside a bicycle tire pump has 60 joules of work done on it as 20 joules of heat is conducted away

from it. What is the change in internal energy of the air?

ANSWER: 40 J POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 137. A 4 kilogram block of ice is removed from a freezer where its temperature was maintained at –20 degrees

Celsius. How much heat does the ice absorb as it is warmed to –10 degrees? (The specific heat capacity of ice is 2,000 joules per kilogram degree Celsius.)

ANSWER: 80,000 J POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 138. A baseball with mass 0.14 kilograms and speed 40 m/s is caught. If all of its kinetic energy is converted to

internal energy as it is caught, what is its temperature change? (Assume the baseball’s specific heat capacity is 1,000 joules per kilogram degree Celsius.)

ANSWER: 0.8 °C POINTS: 1 QUESTION TYPE: Subjective Short Answer Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat HAS VARIABLES: False DATE CREATED: 6/13/2016 10:30 AM DATE MODIFIED: 6/13/2016 10:30 AM 139. On a winter day the temperature is 5 degrees Celsius and the humidity is 0.003 kilograms per cubic meter.

(a) What is the relative humidity? (b) The air is brought into a building and heated to 20 degrees Celsius without changing the humidity. What is the relative humidity inside the building?

ANSWER: (a) 44.1%, (b) 17.6% POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 1:31 PM 140. What is the maximum efficiency of a heat engine operating between 293 Kelvins and 273 Kelvins, the

temperatures at the surface and several hundred meters below the surface, respectively, of the ocean?

ANSWER: 6.8% POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 141. An aluminum wing on a plane is 38 m long when the temperature is 20 oC. At what temperature (in oC) would the wing be 0.04 m shorter? Enter your answer to one decimal place. You should think about the physics of the situation before trying to solve the problem. (Hint: You are being asked for a temperature, not a temperature change).

ANSWER: –22.1 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:34 PM a. bimetallic strip b. Carnot efficiency c. conduction d. convection e. entropy f. evaporation g. heat h. heat engine i. heat mover Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat j. humidity

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Chapter 05: Temperature and Heat k. internal energy l. radiation m. saturation density n. temperature o. dew point QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 1:28 PM 142. used in thermostats and some thermometers ANSWER: a POINTS: 1 143. can be increased by doing work on a substance or by adding heat to it ANSWER: k POINTS: 1 144. main mechanism of heat transfer in a solid ANSWER: c POINTS: 1 145. the density of water vapor in the air ANSWER: j POINTS: 1 146. this is how we receive heat from the Sun ANSWER: l POINTS: 1 147. refrigerators, air conditioners and heat pumps are examples ANSWER: i POINTS: 1 148. the maximum possible humidity ANSWER: m POINTS: 1 149. the best that a heat engine can have ANSWER: b POINTS: 1 150. heat transfer by way of buoyant mixing in a fluid ANSWER: d POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat 151. depends on the average kinetic energy of atoms and molecules in a substance ANSWER: n POINTS: 1 152. At temperatures below their boiling point, liquids gradually go into the gas phase through a process called ANSWER: f POINTS: 1

Match each item with the correct statement below. a. bimetallic strip b. Carnot efficiency c. conduction d. convection e. entropy f. evaporation g. heat h. heat engine i. heat mover j. humidity k. internal energy l. radiation m. saturation density n. temperature o. dew point QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 1:32 PM DATE MODIFIED: 6/15/2016 1:36 PM 153. used in thermostats and some thermometers ANSWER: a POINTS: 1 154. can be increased by doing work on a substance or by adding heat to it ANSWER: k POINTS: 1 155. main mechanism of heat transfer in a solid ANSWER: c POINTS: 1 156. the density of water vapor in the air ANSWER: j POINTS: 1 157. this is how we receive heat from the Sun ANSWER: l POINTS: 1 158. refrigerators, air conditioners, and heat pumps are examples ANSWER: i POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 05: Temperature and Heat 159. the maximum possible humidity ANSWER: m POINTS: 1 160. the best that a heat engine can have ANSWER: b POINTS: 1 161. heat transfer by way of buoyant mixing in a fluid ANSWER: d POINTS: 1 162. depends on the average kinetic energy of atoms and molecules in a substance ANSWER: n POINTS: 1 163. at temperatures below their boiling point, liquids gradually go into the gas phase through a process called ANSWER: f POINTS: 1

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Chapter 06: Waves and Sound 1. The flash from a camera is an example of a continuous wave. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 2. The number of cycles of a wave passing a point per unit time is the wave’s period. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 3. The distance between two successive ‘like’ points on a wave is the wave’s wavelength. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 4. The maximum displacement of points on a wave from the equilibrium position is the wave’s wavelength. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 5. The wavelength of a wave divided by the frequency of the wave is the wave’s speed. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 6. When the frequency of the source of a water wave increases, the distance between successive peaks in the

wave increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 7. When the frequency of the source of a water wave increases, the speed of the waves traveling in the water

increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 8. A water wave is an example of a transverse wave. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 9. A sound wave in a metal bar is an example of a longitudinal wave. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 10. Sound in a vacuum is impossible. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 11. Regions of a longitudinal wave where the particles of the medium are squeezed together are called

compressions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 12. Waves carry energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 13. The speed of a wave is the same as the speed of the particles displaced by the wave. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound When a force F stretches a rope of mass per unit length ρ, the velocity of a wave in the rope is given by

14. You have two ropes of the same length. The mass of the second rope is twice the mass of the first rope. The

velocity of a wave in the second rope is

times the velocity of a wave in the first rope.

a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: force F stretches a rope DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 15. You pull on a rope with a certain force, and a wave travels in the rope with a certain velocity. If you double

your force, the velocity of a wave in the rope is now

times the original velocity.

a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: force F stretches a rope DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 16. You have two identical ropes stretched with the same force between two different sets of posts. The second

rope is twice as long as the first rope. The velocity of a wave in the second rope is half the velocity of a wave in the first rope. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: force F stretches a rope DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound

17. A wave moves in a rope with a certain wavelength. A second wave is made to move in the same rope with

twice the wavelength of the first wave. The frequency of the second wave is half the frequency of the first wave.

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Chapter 06: Waves and Sound a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

A source emits sound at a fixed constant frequency f.

18. If the source moves away from you, the frequency you hear is lower than f. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 19. If you run towards the source, the frequency you hear is lower than f. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 20. If the source moves away from you, and at the same time you run away from the source, the frequency you

hear is the same as f. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound 21. If the temperature of the air rises, the frequency you hear is higher than f. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 22. If the source moves away from you faster than the speed of sound in air, you do not hear any frequency but

instead a ‘sonic boom.’ a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 23. Sound cannot travel through solid steel. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 24. If the source moves, the wavelength of the sound in front of the direction of motion is smaller than the

wavelength behind the direction of motion. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound 25. You can hear sound through an open window from sources that are not in your line of sight because of

diffraction. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 26. When two identical waves arrive at the same place in phase, there is destructive interference. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 27. Two speakers in a stereo emit identical pure tones. As you move around in front of the speakers, you hear

the sound alternating between loud and zero. This occurs because of diffraction. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 28. In order for two waves to interfere completely destructively, they must have the same amplitude. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 29. As you move farther away from a source emitting a pure tone, the frequency of the sound you hear

decreases.

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Chapter 06: Waves and Sound a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 30. Reverberation can both inhibit conversation and enhance music. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 31. Reverberation time of a room can be increased by covering the walls with better reflectors of sound. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 32. In ultrasound the wavelength of the sound is much smaller than in normal sound. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 33. Two uses of ultrasound are navigation by bats and controlling insects. a. True b. False ANSWER: True POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 34. A sound level of 80 dB has twenty times the amplitude of a 60 dB sound. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 35. A zero decibel sound level has zero amplitude. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 36. Combining two sounds of equal intensity will give a sound level 3 dB higher than the sound level due to just

one of them. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 37. A sound with ten times the amplitude of another sound is judged to be ten times as loud. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound DATE MODIFIED: 6/13/2016 10:31 AM 38. Two identical sound producers will sound twice as loud as just one. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 39. Your vocal cords are used to produce all the sounds you make while speaking. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 40. Telephones don’t transmit frequencies above 3,400 Hz. Musical notes should sound normal over the

telephone as long as they are below 3,400 Hz. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 41. If you increase the linear mass density of a rope, the speed of a wave on the rope also increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 42. In the troposphere segment of the Earth’s atmosphere, as you increase in altitude the temperature decreases.

This means the speed of sound decreases as you increase in altitude.

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Chapter 06: Waves and Sound a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 43. For waves moving through the atmosphere at a constant velocity, higher frequency waves must have proportionally longer wavelengths. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 44. Sound waves propagate in two dimensions. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 45. What is meant by a wave medium? a. a wave of moderate amplitude b. water c. air d. any material through which a wave travels ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 46. The number of cycles of a wave passing a point per unit time is the wave’s a. speed.

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Chapter 06: Waves and Sound b. frequency. c. wavelength. d. amplitude. e. loudness.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:19 AM 47. The distance between two successive ‘like’ points on a wave is the wave’s a. speed. b. frequency. c. wavelength. d. amplitude. e. loudness.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:19 AM 48. What is the symbol traditionally used to represent wavelength? a. wl b. y c. μ

d. λ

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 49. The maximum displacement of points on a wave from the equilibrium position is the wave’s a. speed. b. frequency. c. wavelength. d. amplitude. e. loudness.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:19 AM 50. The distance between peaks on a wave divided by the time for the wave to travel this distance is the wave’s a. speed. b. frequency. c. wavelength. d. amplitude. e. loudness.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:20 AM 51. The wavelength of a wave multiplied by the frequency of the wave is the wave’s a. speed. b. frequency. c. wavelength. d. amplitude. e. loudness.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:20 AM 52. When the frequency of the source of a water wave increases, the distance between successive peaks in the

wave a. remains unchanged. b. increases. c. decreases. d. cannot be determined.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:21 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound 53. When the frequency of the source of a water wave increases, the speed of the waves traveling in the water a. remains unchanged. b. increases. c. decreases. d. cannot be determined.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:21 AM 54. You drop a rock in a pond, and the water waves travel away from the rock with a certain speed. You drop a

heavier rock in the water. The speed of the waves in the water from the heavier rock a. remains unchanged. b. increases. c. decreases. d. cannot be determined.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:21 AM 55. If a source of sound is traveling toward you, the speed of the sound waves reaching you is

the speed the sound waves would have had if the source were stationary. a. faster than b. slower than c. the same as ANSWER: c RATIONALE: The frequency is higher, but the speed is the same.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 56. Two sound waves traveling through the air have different frequencies. Consequently, they must also have

different a. amplitudes. b. speeds. c. wavelengths.

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Chapter 06: Waves and Sound d. all of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:22 AM 57. Which of the following can change the frequency of a wave? a. interference b. the Doppler effect c. diffraction d. all of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

When a force F stretches a rope of mass per unit length ρ, the velocity of a wave in the rope is given by

58. You pull on a rope with a certain force, and a wave travels in the rope with a certain velocity. If you double

your force, the velocity of a wave in the rope is now a. 1/2

the original velocity.

b.

times c. the same as d.

times e. 2 times ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: force F stretches a rope DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 59. You have two ropes of the same length. The mass of the second rope is twice the mass of the first rope. The

velocity of a wave in the second rope is a. 1/2 Copyright Cengage Learning. Powered by Cognero.

the velocity of a wave in the first rope.

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Chapter 06: Waves and Sound b.

times c. the same as d.

times e. 2 times ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: force F stretches a rope DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 60. You have two identical ropes stretched with the same force between two different sets of posts. The second

rope is twice as long as the first rope. The velocity of a wave in the second rope is of a wave in the first rope. a. 1/2

the velocity

b.

times c. the same as d.

times e. 2 times ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: force F stretches a rope DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force.

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Chapter 06: Waves and Sound

61. The wave where the speed is greatest is a. I. b. II. c. III. d. IV. e. all of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:22 AM 62. A wave moves in a rope with a certain wavelength. A second wave is made to move in the same rope with

twice the wavelength of the first wave. The frequency of the second wave is the first wave. a. 1/2 b. the same as c. 2 times d. unrelated to ANSWER: POINTS:

the frequency of

a 1

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Chapter 06: Waves and Sound QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 63. You shout at a cliff, and hear your echo in 2 seconds. If the speed of sound in the air is 340 m/s, the distance

of the cliff from you is a. 85 m. b. 170 m. c. 340 m. d. 680 m. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:23 AM

A source emits sound at a fixed constant frequency f.

64. If the source moves away from you, the frequency you hear is a. the same as f. b. higher than f. c. lower than f.

d. unrelated to f.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:23 AM 65. If you run towards the source, the frequency you hear is a. the same as f. b. higher than f. c. lower than f. d. unrelated to f.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:24 AM 66. If the source moves away from you, and at the same time you run away from the source, the frequency you Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound hear is a. the same as f. c. lower than f.

b. higher than f. d. unrelated to f.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:24 AM 67. If the temperature of the air rises, the frequency you hear is a. the same as f. b. higher than f. c. lower than f. d. unrelated to f.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:25 AM 68. If the source moves away from you faster than the speed of sound in air, the frequency that you hear is a. the same as f. b. higher than f. c. lower than f.

d. unrelated to f.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:25 AM 69. If the source moves, the wavelength of the sound in front of the direction of motion is

the

wavelength behind the direction of motion. a. the same as b. larger than c. smaller than d. unrelated to ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: source emits sound DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound DATE MODIFIED: 6/13/2016 10:31 AM 70. You can hear sound through an open window from sources that are not in your line of sight because of a. interference. b. diffraction. c. the sound level. d. the Doppler effect. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:25 AM 71. Which of these waves will diffract the most when passing through a 20 cm wide opening in a barrier? a. a wave with a wavelength of 25 cm b. a wave with a wavelength of 2 cm c. a wave with a wavelength of 0.05 cm d. none of these waves will diffract at all ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 72. When two identical waves arrive at the same place in phase, there is a. constructive interference. b. destructive interference. c. diffraction. d. a Doppler effect. e. a shock wave.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:26 AM 73. Two speakers in a stereo emit identical pure tones. As you move around in front of the speakers, you hear

the sound alternating between loud and zero. This occurs because of a. interference.

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Chapter 06: Waves and Sound b. changing sound level. c. diffraction. d. the Doppler effect. e. shock waves.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:26 AM 74. As you move farther away from a source emitting a pure tone, the

of the sound you hear

decreases. a. frequency b. period c. wavelength d. amplitude e. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 75. Choose the correct statement. a. The perceived pitch of a sound usually doesn’t depend on the sound’s frequency. b. The frequency of each musical note is 10 Hz higher than that of the next lower note. c. The decibel is the standard measure of tone quality. d. The perceived loudness of a sound depends somewhat on frequency.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 76. Which of the following is not one of the ways sound can be used? a. to circulate the refrigerant in a refrigerator b. to relay information to orbiting satellites c. to form images of internal organs d. to measure the air temperature aloft Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound e. to make a bubble in water produce light ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 77. In ultrasound the a. frequency

of the sound is much greater than in normal sound.

b. period c. wavelength d. amplitude e. speed ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 78. Ultrasound is used a. to form images of internal organs. b. by bats to navigate. c. in automatic focus cameras. d. to control insects. e. all of the above ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:27 AM 79. The wavelength of ultrasound at 1 million Hz in air where the speed of sound is 340 m/s is a. 0.00000034 m. b. 0.0000034 m. c. 0.00034 m. d. 0.34 m. e. 340,000,000 m.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:27 AM 80. You listen to a live orchestra concert from a cheap seat far away, high up in the balcony. The music seems to

be a little out of sync with the conductor’s beat. Why? a. The musicians are paying no attention to the conductor. b. You are noticing a time lag due to the finite speed of sound. c. The orchestra is not very good. d. The viola section is dragging.

ANSWER: RATIONALE:

b

The other answers are possibilities!

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 81. Doppler radar

can a. catch speeders. b. measure the speed of a pitcher’s fastball. c. detect tornadoes. d. do all of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:28 AM 82. You see a lightning flash and half a second later hear a loud blast of thunder. How far away did the

lightning hit? a. about a mile c. a tenth of a mile

b. half a mile d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 83. An echo is a sound wave that has been a. diffracted.

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Chapter 06: Waves and Sound b. refracted. c. reflected. d. reverberated. e. amplified.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:28 AM

84. The wavelength of the wave shown in this figure is about a. 2 m. b. 1.75 m. c. 0.33 m. d. not defined. e. slightly over 5 m.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: 5m wave DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:28 AM 85. Which of these shows one cycle of the wave? a. b.

c.

d.

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Chapter 06: Waves and Sound ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: 5m wave DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 1:50 PM 86. The 3rd harmonic of a complex tone has a frequency of 1,200 Hz. The frequency of the tone is a. 200 Hz. b. 400 Hz. c. 600 Hz.

d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:29 AM 87. A sound level of 80 dB has a. ten times b. twenty times c. one tenth

the amplitude of a 60 dB sound.

d. twice

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 88. A zero decibel sound level a. has zero amplitude. c. is just at the threshold of hearing.

b. is nonsense. d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:29 AM 89. Combining two sounds of equal intensity will give a sound level

just one of them. a. twice as loud c. 10 dB higher ANSWER:

than the sound level due to

b. 3 dB higher d. 2 dB higher b

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Chapter 06: Waves and Sound POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 90. If one lawn mower causes an 80-dB sound level at a point nearby, four lawnmowers together would cause a

sound level of a. 92 dB c. 86 dB

at that point. b. 84 dB d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:36 PM 91. If you move twice as far away from a lawn mower running in an open field, the amplitude of the sound you

hear will be a. the same as b. twice c. half d. four times e. one fourth

what it was before.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 92. A sound with ten times the amplitude of another sound is judged to be a. twice as loud. b. ten times as loud. c. 10 dB higher in sound level.

d. 20 dB higher in sound level.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:29 AM 93. Harmonics a. are components of a complex waveform.

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Chapter 06: Waves and Sound b. have frequencies that are integer multiples of the frequency of the complex waveform. c. are pure tones. d. have sinusoidal waveforms. e. all of the above ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:30 AM 94. In the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold temperatures. What is the speed of sound (in metric units) for a temperature of –49.0 oC? a. 984.9 m/s b. 300.8 m/s c. 344.7 m/s d. 140.7 m/s ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:30 AM 95. What frequency of sound traveling in air at 40 oC has a wavelength of 0.50 m? a. 20 Hz b. 344.7 Hz c. 502.9 Hz d. 711.2 Hz ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 96. You are on an island where a huge explosion at a distance of 500 miles away can be heard. How long (in seconds) does it take the sound to travel to your location? Assume the temperature of the air is 20 oC. a. 1.4 s b. 5.6 s c. 2340 s d. 8955 s ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 1:58 PM 97. You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. You use your Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound fog horn to send out a blast of sound (assume the temperature of the air is 20 oC) and the time it takes for the sound to return to you is 20.0 s. How far away are the cliffs (in metric units)? Hint: Be careful and think about the physics of the problem. You may want to make a sketch of the situation to help you determine the answer. a. 1798 m b. 3444 m c. 3596 m d. 7192 m ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 98. Sound waves propagate in a. one dimension. b. two dimensions. c. three dimensions. d. four dimensions.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:31 AM 99. An example of a transverse wave is a a. sound wave in air. b. wave on a rope. c. water wave. d. sound wave in a metal bar. e. none of the above ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:32 AM 100. An example of a longitudinal wave is a. a sound wave in air. b. a wave on a rope. c. a water wave. d. a sound wave in a metal bar. e. none of the above.

ANSWER: a, d POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 2:33 PM 101. In a plane wave, the wavefronts are a. circular. b. flat. c. parallel. d. perpendicular to the direction of propagation.

ANSWER: b, c, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:32 AM

The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force.

102. The wave with the largest wavelength is wave a. I. b. II. Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound c. III. d. IV. e. all of the above ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:33 AM 103. The wave with the largest amplitude is a. I. b. II. c. III. d. IV. e. all of the above.

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:33 AM 104. The wave with the largest frequency is a. I. b. II. c. III. d. IV. e. all of the above.

ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:33 AM 105. In order for two waves to interfere completely destructively, they must a. have the same amplitude. b. be exactly out of phase. c. one wave’s peak must align with the other’s valley.

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Chapter 06: Waves and Sound d. be transverse waves. e. all of the above ANSWER: a, b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:34 AM 106. You put one ear on a steel railroad track while your friend a distance of 400 m away taps on the rail with a stone.

You will hear the sound through the steel rail in and through the air where the speed of sound is 344 m/s in . a. 0.08 s b. 0.5 s c. 1.2 s d. 2.4 s ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 107. The number of cycles of a wave passing a point per unit time is the wave’s ANSWER: frequency

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 108. A complex tone can be produced by combining two or more ANSWER: pure tones POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

109. The distance between two successive ‘like’ points on a wave is the wave’s ANSWER: wavelength POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 06: Waves and Sound 110. The maximum displacement of points on a wave from the equilibrium position is the wave’s ANSWER: amplitude POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 111. A ANSWER:

.

wave is one with its oscillations perpendicular to the direction of propagation. transverse

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 112. The wavelength of a wave multiplied by the frequency of the wave is the wave’s ANSWER: speed POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 113. Two examples of a longitudinal wave are and ANSWER: sound waves, longitudinal waves in a Slinky POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 114. Two examples of a transverse wave are ANSWER: waves on a rope, water waves

and

.

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force.

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Chapter 06: Waves and Sound

115. The waves with the largest wavelength are waves ANSWER: I and III

and

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 116. The waves with the largest amplitude are ANSWER: I and II POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

and

117. The waves with the largest frequency are ANSWER: II and IV

and

.

.

POINTS: 1 QUESTION TYPE: Completion Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 118. The wave with the greatest speed is ANSWER: None—they all have the same speed.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: snapshot of 4 different DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

119. A wave moves in a rope with a certain wavelength. A second wave is made to move in the same rope with

twice the wavelength of the first wave. The frequency of the second wave is the first wave.

ANSWER: 1/2

times the frequency of

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 120. Increasing the speed of waves on a guitar string increases the ANSWER: frequency (or pitch) POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

of the sound it produces.

121. You shout at a cliff, and hear your echo in 2 seconds. If the speed of sound in the air is 340 m/s, the

distance of the cliff from you is ANSWER: 340 m

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 122. You can hear sound through an open window from sources that are not in your line of sight because of

.

ANSWER:

diffraction

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Chapter 06: Waves and Sound POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 123. Two speakers in a stereo emit identical pure tones. As you move around in front of the speakers, you hear

the sound alternating between loud and zero. This occurs because of ANSWER: interference

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 124. When two identical waves undergo ANSWER: destructive POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

interference, the net amplitude is zero.

125. As you move farther away from a source emitting a pure tone, the

of the sound you hear

decreases.

ANSWER:

amplitude

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 126. In ultrasound the ANSWER: frequency

of the sound is much greater than in normal sound.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 127. Two uses of ultrasound are and .

ANSWER: forming images of internal organs, navigation by bats, automatic focus cameras,

controlling insects POINTS:

1

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Chapter 06: Waves and Sound QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 128. The wavelength of ultrasound at 1 million Hz in air where the speed of sound is 340 m/s is ANSWER: 0.00034 m POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 129. The only way to make sound travel faster in air is to change the air’s ANSWER: temperature POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 130. A sound level of 80 dB has ANSWER: ten POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

.

times the amplitude of a 60 dB sound.

131. Combining two sounds of equal intensity will give a sound level

higher than the sound level

due to just one of them.

ANSWER: 3 dB POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 132. As you increase in altitude in the atmosphere, the speed of sound ANSWER: decreases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 06: Waves and Sound DATE MODIFIED: 6/13/2016 10:31 AM 133. If the speed of a continuous wave is constant, as you increase the frequency of the wave, the wave must have a proportionally wavelength ANSWER: shorter POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 134. What is the speed of sound in the air inside a furnace where the temperature is 500 degrees Celsius

(773 Kelvin)?

ANSWER:

559 m/s

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 135. Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. The peaks of

the ripples are 0.03 meters apart. What is the speed of the water ripples?

ANSWER: 0.15 m/s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 136. A test tone used on a radio has a frequency of 1,000 Hz. What is the wavelength of this sound in air at

normal room temperature? (The speed of sound is 344 meters per second.)

ANSWER: 0.344 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 137. A huge explosion is heard 20 miles away. How long does it take the sound to travel that far? (20 miles =

32,000 meters) ANSWER: 93 s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound DATE MODIFIED: 6/13/2016 10:31 AM 138. The fourth harmonic of a complex tone has a frequency of 600 Hz. What is the frequency of the tone?

ANSWER: 150 Hz POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 139. If one lawn mower causes an 80-dB sound level at a nearby point, what sound level at that point would four

lawnmowers together cause?

ANSWER: 86 dB POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:37 PM 140. In the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold temperatures. What is the speed of sound (in metric units) for a temperature of -53.0 oC? ANSWER: 298.1 m/s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM a. amplitude b. constructive interference c. destructive interference d. diffraction e. Doppler effect f. frequency g. longitudinal h. pitch i. ray j. reflection k. reverberation l. sound level m. transverse n. ultrasound o. waveform Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound p. wavelength QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 141. line used to show the path of a wave ANSWER: i POINTS: 1 142. occurs when two waves arrive in phase ANSWER: b POINTS: 1 143. occurs when sound passes through an open window ANSWER: d POINTS: 1 144. sound waves used to form images of internal organs ANSWER: n POINTS: 1 145. the maximum displacement of points on a wave ANSWER: a POINTS: 1 146. the number of cycles of a wave passing a point per unit time ANSWER: f POINTS: 1 147. measured in decibels ANSWER: l POINTS: 1 148. the distance between two successive ‘like’ points on a wave ANSWER: p POINTS: 1 149. sound in air is an example of this type of wave ANSWER: g POINTS: 1 150. affects the frequency of the sound from a moving sound source ANSWER: e POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound 151. multiple, random reflection of sound inside a room ANSWER: k POINTS: 1 152. when two wave are “out of phase” the result is ANSWER: c POINTS: 1

Match each item with the correct statement below. a. amplitude b. constructive interference c. destructive interference d. diffraction e. Doppler effect f. frequency g. longitudinal h. pitch i. ray j. reflection k. reverberation l. sound level m. transverse n. ultrasound o. waveform p. wavelength QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 2:00 PM DATE MODIFIED: 6/15/2016 2:04 PM 153. line used to show the path of a wave ANSWER: i POINTS: 1 154. occurs when two waves arrive in phase ANSWER: b POINTS: 1 155. occurs when sound passes through an open window ANSWER: d POINTS: 1 156. sound waves used to form images of internal organs ANSWER: n POINTS: 1 157. the maximum displacement of points on a wave ANSWER: a POINTS: 1 158. the number of cycles of a wave passing a point per unit time ANSWER: f POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 06: Waves and Sound 159. measured in decibels ANSWER: l POINTS: 1 160. the distance between two successive ‘like’ points on a wave ANSWER: p POINTS: 1 161. sound in air is an example of this type of wave ANSWER: g POINTS: 1 162. affects the frequency of the sound from a moving sound source ANSWER: e POINTS: 1 163. multiple, random reflections of sound inside a room ANSWER: k POINTS: 1 164. when two wave are “out of phase” the result is ANSWER: c POINTS: 1

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Chapter 07: Electricity 1. An atom with fewer electrons than protons is a negative ion. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 2. All three types of particles found in atoms are electrically charged. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 3. An object that has zero resistance is a semiconductor. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 4. Current is the rate of flow of electric charge. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 5. The SI unit of electric charge is e, the charge on the electron. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 6. Electrons are negatively charged. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 7. Superconductivity is lost when a certain critical temperature is exceeded. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 8. Voltage is a measure of the energy per unit charge supplied by a battery. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 9. Voltage can also be called potential. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE MODIFIED: 6/13/2016 10:31 AM 10. Current is the opposition to the flow of charge. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 11. Voltage is the force on a charged object divided by the charge on the object. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 12. Larger batteries have higher output voltages. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 13. Two charged bodies separated by a distance d exert an electrical force on each other. The distance d

is doubled. The electrical force on each body is now 1/2 of the original force. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 14. Two charged bodies separated by a distance d exert a repulsive electrical force on each other. The signs of Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity the charges on the two bodies are + and –. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 15. The resistance of a conducting material depends on its composition, length, diameter, and temperature. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 16. If the length of a wire increases, its resistance decreases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 17. If the diameter of a wire increases, its resistance decreases. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 18. The resistance of a wire does not change when its temperature changes. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 19. Solids that are good conductors of heat tend also to be good conductors of electricity. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 20. Semiconductor technology has been the basis for many new electronic devices. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 21. An electrostatic precipitator uses an electric field to remove smoke from the air. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 22. If the current drawn from a 12-volt car battery is 100 amperes when it is short circuited with a wire,

the resistance of the wire is 0.12 ohms. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:38 PM 23. A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance

of 4 ohms. The voltage of the battery is 2 volts. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 24. A battery stores electric charge in the same way that a bottle stores water. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 25. If an electric toaster operating on 120 volts draws a current of 6 amperes, the resistance of the toaster is

20 ohms. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 26. In a parallel circuit, the size of the current flowing through each device may be different. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity 27. A light bulb designed for use with AC would still work if hooked up to DC of the proper voltage. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.

28. The resistance of the light bulb is 20 ohms. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 29. The power consumed by the light bulb is 20 watts. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 30. If two slide projectors are connected in parallel across the same 120-volt source, the current drawn from

the source remains at 6 amperes. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE MODIFIED: 7/12/2016 12:38 PM 31. If two slide projectors are connected in series across the same 120-volt source, the current drawn from

the source remains at 6 amperes. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:39 PM 32. The energy used by a 100-watt light bulb in 1 hour is 360,000 joules a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:39 PM 33. The energy used by a 100-watt light bulb in 1 hour is 100 kilowatt-hours. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:39 PM

A heater is rated at 1200 watts for a 120-volt source.

34. The current drawn by the heater is 10 amperes. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE MODIFIED: 6/13/2016 10:31 AM 35. The resistance of the heater is 10 ohms. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 36. If two heaters are connected in parallel across the 120-volt source, the total power drawn from the

source increases to 2400 watts. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:40 PM 37. If two heaters are connected in parallel across the 120-volt source, the current drawn from the source is

10 amperes. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:40 PM 38. In a circuit connected to a battery, the current flows from negative pole toward the positive pole of the battery. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 39. In a parallel circuit with three resistors all the same size, the current flow though each leg of the circuit will be equal. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 40. An alternate equation for power in an electric circuit is P = IR. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:41 PM 41. In general, an insulator will have a low resistance to current flow. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 42. A positive ion is formed when a. a neutral atom gains an electron. c. a negative ion loses an electron.

b. a neutral atom loses an electron. d. all of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:35 AM 43. An atom with fewer electrons than protons is Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity a. a semiconductor. b. a superconductor. c. a positive ion. d. a negative ion. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:36 AM 44. An electric current can consist of a. positive ions flowing in a liquid. c. electrons flowing in a wire.

b. negative ions flowing in a liquid. d. all of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:37 AM 45. An object that has zero resistance is a a. semiconductor. b. superconductor. c. diode. d. transistor. e. positive ion.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:38 AM 46. The rate of flow of electric charge is a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.

ANSWER: b Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:38 AM 47. Suppose current is flowing in a wire from right to left. Which way do the electrons in the wire move? a. right to left b. left to right c. in circles d. It is impossible to tell.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 48. The SI unit of electric charge is a. e, the charge on the electron. b. the coulomb. c. the ampere. d. the ohm. e. the volt.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:38 AM 49. What is meant by ‘like charges?’ a. charges that are both positive b. equal amounts of charge c. charges that are both negative d. A and C ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity 50. What is meant by ‘net charge?’ a. the total amount of positive charge on an object b. the total amount of negative charge on an object c. the total amount of neutral charge on an object d. A minus B ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 51. Superconductivity is lost when a certain a. voltage b. current c. resistance

is exceeded.

d. electric field

e. critical temperature ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 52. The energy per unit charge supplied by a battery is its a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:39 AM 53. A quantity that is measured in ohms is a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.

ANSWER:

c

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:39 AM 54. A quantity that measures the opposition to the flow of charge is a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:39 AM 55. Voltage can also be called a. potential. b. pressure. c. work. d. energy. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:40 AM 56. If you think of a battery as an electric charge ‘pump,’ the battery voltage is analogous to a. rate of fluid flow. b. pressure. c. flow velocity. d. water. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE MODIFIED: 7/14/2016 1:40 AM 57. A car headlight and an interior dome light use the same voltage, but the headlight consumes much more

power because a. its resistance is lower. b. the current in it is larger. c. it uses energy faster. d. all of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:41 AM 58. Why do we use fuses? a. to eliminate shock hazards b. to prevent fires c. to save on the cost of electricity d. to store charge ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 59. If three identical bulbs are connected in parallel across a 12-V battery, the voltage across each bulb will be a. 12 V. b. 4 V. c. different. d. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:41 AM 60. If three identical bulbs are connected in series across a 12-V battery, the voltage across each bulb will be a. 12 V. b. 4 V. c. different.

Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:41 AM 61. The force on a charged object divided by the charge on the object is a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:42 AM

The electric field shown is produced by a single point charge at the center of the picture.

62. What type of charge produces the electric field shown? a. positive b. negative c. neutral d. impossible to tell ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: electric field single DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity 63. If a new positive point charge is placed at location A directly to the right of the one pictured, the force on it

will a. be zero. b. push it to the right. c. push it to the left. d. be in an unknown direction.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: electric field single DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:42 AM 64. If a new negative point charge is placed at location B directly above the one pictured, the force on it will a. be zero. b. push it upward. c. push it downward. d. be in an unknown direction.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: electric field single DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:42 AM 65. What force will a negative charge placed at location C feel? a. zero b. a force up and to the left c. a force up and to the right d. a force down and to the left e. a force down and to the right ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: electric field single DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 66. Two charged bodies separated by a distance d exert an electrical force on each other. The charge on one

of the bodies is doubled. The electrical forces on each body now Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity a. double. b. decrease by 1/2. c. stay the same. d. differ—the force on the other body doubles, but the force on the body whose charge was changed

stays the same as before. e. increase by a factor of four.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:43 AM 67. What is the usual symbol used to represent an amount of charge? a. C b. q c. e

d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 68. When we say charges are ‘positive’ or ‘negative’ we are speaking of a. two intrinsically different types of charge found in nature. b. an excess vs. a deficiency of charge. c. charges existing vs. not existing. d. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:43 AM 69. Two charged bodies separated by a distance d exert an electrical force on each other. The distance d

is doubled. The electrical force on each body now a. decreases by 1/4. b. decreases by 1/2. c. stays the same. d. increases by 2 times. e. increases by 4 times.

ANSWER:

a

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:44 AM 70. Electrons are a. positively charged. c. uncharged.

b. negatively charged. d. variably charged.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:44 AM 71. The resistance of a conducting material depends on its a. composition. b. length. c. diameter. d. temperature. e. all of the above ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:45 AM 72. If the length of a wire increases, its resistance a. increases. b. decreases. c. does not change. d. will increase or decrease depending on the composition. e. will change in a way that can not be determined.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:45 AM 73. If the diameter of a wire increases, its resistance Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity a. increases. b. decreases. c. does not change. d. will increase or decrease depending on the composition. e. will change in a way that can not be determined.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:45 AM 74. If the temperature of a wire increases, its resistance a. increases. b. decreases. c. does not change. d. will increase or decrease depending on the composition. e. will change in a way that can not be determined.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:45 AM 75. If I short out a D cell and draw a current of 7 A for 5 s, how many coulombs of charge move through the

circuit? a. 7 C c. 7/5 C

b. 5 C d. 35 C

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 76. The kilowatt-hour is a unit of a. power. b. energy. c. voltage.

d. current.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:46 AM

77. The light bulbs in this circuit are connected in a. parallel. b. series. c. neither parallel nor series.

d. a short circuit.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lightbulb circuit DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:46 AM 78. When a 12-volt car battery is short circuited with a wire, the current drawn from the battery is 100 amperes.

The resistance of the wire is a. zero. b. 0.12 ohms. c. 100/12 = 8.33 ohms. d. 1200 ohms. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:47 AM 79. A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance

of 4 ohms. The voltage of the battery is a. 0.5 volts. b. 2 volts. c. 8 volts. d. none of the above.

ANSWER: POINTS:

c 1

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Chapter 07: Electricity QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:47 AM 80. An electric toaster operating on 120 volts draws a current of 6 amperes. The resistance of the toaster is a. 0.05 ohms. b. 20 ohms. c. 720 ohms.

d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:48 AM 81. In the U.S. AC line voltage oscillates at a frequency of a. 50 Hz. b. 60 Hz. c. 120 Hz.

d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:48 AM

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.

82. The resistance of the light bulb in ohms is a. 0.05. b. 20. c. 720.

d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:48 AM 83. The power consumed by the light bulb in watts is a. 0.05. b. 20. c. 720.

d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:48 AM 84. If two slide projectors are connected in parallel across the same 120-volt source, the current drawn from

the source in amperes is a. 3. b. 6. c. 9. d. 12. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:49 AM 85. If two slide projectors are connected in series across the same 120-volt source, the current drawn from

the source in amperes is a. 3. b. 6. c. 9. d. 12. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:49 AM 86. The energy used by a 100-watt light bulb in 1 hour is a. 0.01 J. b. 360,000 J. c. 100 J. d. 6,000 J. e. none of the above.

ANSWER: b POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:49 AM

A heater is rated at 1200 watts for a 120-volt source.

87. The current in amperes drawn by the heater is a. 0.1. b. 10. c. 144,000. d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:50 AM 88. The resistance in ohms of the heater is a. 0.1. b. 10. c. 144,000.

d. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:50 AM 89. If two heaters are connected in parallel across the 120-volt source, the total power in watts drawn from

the source is a. 600. c. 2400.

b. 1200. d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:50 AM 90. If two heaters are connected in parallel across the 120-volt source, the current in amperes drawn from

the source is a. 5. b. 10.

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Chapter 07: Electricity c. 20.

d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:51 AM 91. Why is most matter electrically neutral? a. It contains no charges. b. There are equal amounts of positive and negative charges present. c. The charge on the electrons and protons in the material is too small to notice. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 92. Lightning is dangerous to humans because lightning strokes a. carry large currents. b. have high voltages. c. have no resistance. d. fry whatever they hit.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:51 AM 93. Why do you hear thunder a substantial time after seeing a lightning flash? a. The sound is produced later than the light is. b. Your eyes respond more quickly than your ears. c. The flash and thunder really are simultaneous, but the thunder lasts longer than the flash. d. Sound travels much more slowly than light.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity 94. How come birds can land on overhead power lines without getting electrocuted? a. Their feet are good insulators. b. They are saved by their small size. c. Both their feet are on the same wire, so they don’t complete a circuit. d. They are just lucky, I guess.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 95. You have a parallel circuit in a house that operates on 120 V with several outlets for plugging in appliances and it has a 20 A fuse in the circuit. What is the maximum number of 600-W appliances that can be plugged into the outlets without “blowing” the fuse? Assume that if the current flow exceeds the rating of the fuse, it will blow. a. 2 b. 4 c. 5 d. 7 ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 1:51 AM 96. If you have 7 total 100-W light bulbs in a parallel circuit in your basement and you leave them on for 1.5 days, how much energy (in kilowatt hours) would be used? a. 25.2 kWh b. 1050 kWh c. 3520 kWh d. 25200kWh ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:44 PM 97. A solid metal wire has a certain resistance. It is heated and carefully stretched to form a longer, thinner wire. After it cools, the resistance is than it was before. a. greater b. less c. no more d. lighter ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE MODIFIED: 6/13/2016 10:31 AM 98. A simple electrical circuit has a constant voltage power supply and a variable resistor. As you increase the resistance the current flow a. increases b. decreases c. remains the same d. cannot be determined ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 2:10 PM 99. Fuses and circuit breakers are used to prevent a. electrical shocks. b. wires overheating and causing fires. c. save on the cost of electricity. d. to store energy.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 2:29 PM 100. An electric motor on an airplane operates on 21.5 volts and draws a current of 11.0 amperes. How much energy (in joules) does the motor use during a 9.0-hour flight? a. 1064.4 b. 2128.5 c. 127710.0 d. 7662600.0 ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:45 PM 101. A battery supplies a. AC current. b. DC current. c. resistance. d. voltage. e. positive ions.

ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 2:29 PM 102. What does a neutral atom become if it acquires an extra electron? a. negatively charged b. positively charged c. an ion d. a molecule ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

The electric field shown is produced by a single point charge at the center of the picture.

103. What force might a charge placed at location D feel? a. zero b. an upward force c. a downward force d. a force to the right e. a force to the left ANSWER: RATIONALE:

d, e

D if the charge is positive, E if it is negative

POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: electric field single DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 104. Two charged bodies separated by a distance d exert a repulsive electrical force on each other. The signs

of the charges on the two bodies might be a. + and +. b. – and –.

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Chapter 07: Electricity c. + and –. d. any of the above. e. not determinable.

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 2:29 PM 105. Ohmic heating is a. always undesirable. c. what makes fuses “blow”.

b. used in light bulbs. d. all of the above.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 2:30 PM 106. The resistance of a wire can be increased by a. making the wire longer. b. lowering the temperature of the wire. c. making the wire thinner. d. making the wire shorter.

ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/14/2016 2:30 PM

A heater is rated at 1200 watts for a 120-volt source.

107. If two heaters are connected in parallel across the 120-volt source, the current drawn from the source is

.

ANSWER: 20 amperes POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:45 PM 108. The current drawn by the heater is ANSWER: 10 amperes Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 109. The resistance of the heater is ANSWER: 12 ohms

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 110. If two heaters are connected in parallel across the 120-volt source, the total power drawn from the source is

.

ANSWER:

2400 watts

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: heater 1200 watts DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:45 PM 111. Like charges , unlike charges ANSWER: repel, attract POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

112. An atom with fewer electrons than protons is a ANSWER: positive ion

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 113. The type of current supplied by a battery is ANSWER: DC current Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 114. In the U.S., AC line voltage oscillates at a frequency of ANSWER: 60 Hz

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 115. An object that has zero resistance is a ANSWER: superconductor

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 116. The rate of flow of electric charge is ANSWER: current POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

117. Superconductivity is lost when a certain ANSWER: critical temperature POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

is exceeded.

118. A charged particle creates an electric ANSWER: field

in the space around it.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity DATE MODIFIED: 6/13/2016 10:31 AM 119. The energy per unit charge supplied by a battery is its ANSWER: voltage POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 2:10 PM

.

120. A quantity that measures the opposition to the flow of charge is ANSWER: resistance

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 121. The size of the current flowing through a conductor equals the

divided by the conductor’s

.

ANSWER:

voltage, resistance

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 122. If you think of a battery as an electric charge “pump,” the battery voltage is analogous to ANSWER: pressure POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 123. The force on a charged object divided by the charge on the object is ANSWER: electric field POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

.

124. Two charged bodies separated by a distance d exert an electrical force on each other. The distance d is Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity doubled. The electrical force on each body is now ANSWER: 1/4

times the original force.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 125. Two charged bodies separated by a distance d exert an attractive electrical force on each other. The signs

of the charges on the two bodies are ANSWER: +,–

and

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 126. Four things that the resistance of a conducting material depends on are

and

,

,

. composition, length, diameter, temperature

ANSWER: POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

127. If the length of a wire increases, its resistance ANSWER: increases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 128. If the diameter of a wire increases, its resistance ANSWER: decreases

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 129. If the temperature of a wire increases, its resistance ANSWER: increases Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 07: Electricity POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 130. If the voltage across the ends of a wire increases, the current in the wire ANSWER: increases

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 131. AC voltages can be easily increased or decreased through use of a ANSWER: transformer

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 132. When a 12-volt car battery is short circuited with a wire, the current drawn from the battery is 100

amperes. The resistance of the wire is ANSWER: 0.12 ohms

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:46 PM 133. A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance

of 4 ohms. The voltage of the battery is ANSWER: 8 volts

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 134. An electric toaster operating on 120 volts draws a current of 6 amperes. The resistance of the toaster is

.

ANSWER: POINTS:

20 ohms 1

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Chapter 07: Electricity QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.

135. The resistance of the light bulb is ANSWER: 20 ohms POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 136. The power consumed by the light bulb is ANSWER: 720 watts POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

.

.

137. If two slide projectors are connected in parallel across the same 120-volt source, the current drawn from

the source is

.

ANSWER: 12 amperes POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:46 PM 138. If two slide projectors are connected in series across the same 120-volt source, the current drawn from

the source is ANSWER:

.

3 amperes

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lightbulb slide projector DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:46 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity 139. The energy used by a 100-watt light bulb in 1 hour is ANSWER: 360,000 J

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:47 PM 140. The loss of usable energy in cables used to conduct electricity from power plants to cities is cause by .

ANSWER: ohmic heating POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 2:10 PM 141. In a thunderstorm cloud, the concentration of negative charge is in the ANSWER: lower POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM

portion of the cloud.

142. A simple electrical circuit has a constant voltage power supply and a variable resistor as a circuit. As you increase the resistance the current flow .

ANSWER: decreases POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 143. A battery in a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of

3 ohms. What is the voltage of the battery?

ANSWER: 6 volts POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 144. An electric toaster operating on 120 volts draws a current of 9 amperes. What is the resistance of

the toaster?

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Chapter 07: Electricity ANSWER:

13.3 ohms

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 145. The light bulb used in a slide projector draws a current of 4 amperes when operating on 120 volts. (a) What is the bulb’s resistance? (b) What is the bulb’s power consumption?

ANSWER: (a) 30 ohms, (b) 480 watts POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/15/2016 2:12 PM 146. How much energy does a 100-watt light bulb use in 1 hour? Express your answer in (a) joules and in (b)

kilowatt-hours. (c) Also find how much money it costs if electricity sells for 10 cents per kW-h.

ANSWER: (a) 360,000 J, (b) 0.1 kW-h, (c)1 cent POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 7/12/2016 12:47 PM 147. An electric motor on an airplane operates on 24 volts and draws a current of 15 amperes.

(a) What is the power consumption of the motor? (b) How much energy does the motor use during a 2 hour flight?

ANSWER: (a) 360 watts, (b) 2,592,000 J POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM 148. The light bulb used in a lamp has a resistance of 240 ohms when operating on 120 volts. What is the bulb’s power consumption?

ANSWER: 60 W POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:31 AM DATE MODIFIED: 6/13/2016 10:31 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity Match each item with the correct statement below. a. AC b. attract c. critical temperature d. electric current e. DC f. electric field g. negative ion h. positive ion i. repel j. resistance k. semiconductor l. transformer m. superconductor n. voltage o. electric charge p. ohmic heating QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 2:12 PM DATE MODIFIED: 6/15/2016 2:16 PM 149. superconductivity is lost when this is exceeded ANSWER: c POINTS: 1 150. an atom with fewer electrons than protons ANSWER: h POINTS: 1 151. type of current supplied by a battery ANSWER: e POINTS: 1 152. employed in toasters and fuses ANSWER: p POINTS: 1 153. has zero resistance ANSWER: m POINTS: 1 154. consists of charges flowing back and forth ANSWER: a POINTS: 1 155. rate of flow of electric charge ANSWER: d POINTS: 1 156. used to change AC voltages ANSWER: l POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 07: Electricity 157. the energy per unit charge supplied by a battery ANSWER: n POINTS: 1 158. like charges do this ANSWER: i POINTS: 1 159. it is measured in ohms ANSWER: j POINTS: 1 160. this phenomenon results in a loss of usable energy ANSWER: p POINTS: 1

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Chapter 08: Electromagnetism and EM Waves 1. The deviation from the way a compass needle points from the true north direction is the magnetic declination. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 2. The direction of a magnetic field at a point can be determined by a compass. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 3. There are positive and negative magnetic charges, analogous to positive and negative electric charges. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 4. A stationary electric charge produces a magnetic field around it. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 5. Moving electric charges make magnetic fields. a. True b. False ANSWER: True Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 6. The shape of the magnetic field around a bar magnet is very close to the shape of the electric field around

a single positive charge. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 7. One can reverse the north and south poles of an electromagnet by reversing the direction of current

flow through it. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 8. Three devices that use electromagnetic induction in their operation are generators, transformers, and

dynamic microphones. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 9. A transformer only works with AC. a. True b. False ANSWER: True POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 10. A speaker can be used as a crude microphone. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 11. An electric motor can be manually turned and made to act as a generator. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 12.

The ionosphere reflects high frequency radio waves. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 13. The ozone layer absorbs infrared radiation from sunlight. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves DATE MODIFIED: 6/13/2016 10:32 AM 14. The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs ultraviolet radiation. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 15. The increase in the amount of carbon dioxide in the atmosphere is contributing to the greenhouse effect. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:22 PM 16. The frequency of visible light determines its color. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 17. The main form of radiation that our bodies emit is ultraviolet. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 18. Blackbody radiation is emitted from a small hole in a furnace. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 19. X rays are used in radar. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 20. Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 21. Gamma radiation is the highest frequency of EM waves. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 22. EM waves travel at a speed that varies with their wavelength. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 23. Infrared radiation causes your skin to tan. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 24. Blue light has a longer wavelength than red light. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 25. Gamma rays are emitted when high speed electrons decelerate as they are smashed into a metal target. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 26. The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is

300 meters. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves 27. The wavelength of a radio wave from an FM station broadcasting at 93.9 megahertz on your radio dial is

0.313 meters. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 28. The cosmic background radiation corresponds to a blackbody at a temperature of 2.726 kelvins. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 29. A changing magnetic field produces an electric field. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body’s absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body’s absolute temperature according to: (

in meters, T in kelvins)

Assume an object is emitting blackbody radiation.

30. If the Kelvin temperature of an object is doubled, the amount of radiant energy emitted each second is twice Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves the original amount. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 31. As the temperature of an object increases, the wavelength of the brightest light emitted increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 32. If the Kelvin temperature of a body is doubled, the wavelength of the most intense light is double the

wavelength originally of the most intense light. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 33. As the temperature of a body increases the color of the body shifts from blue to red. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves 34. The peak of a body’s blackbody radiation curve shifts toward longer wavelength as the temperature of the

body increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 35. The peak of a body’s blackbody radiation curve shifts upward as the temperature of the body increases. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 36. A body in a room at 300 K is heated to 3,000 K. The amount of energy radiated each second by the body

increases 10,000 times. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 37. A body in a room at 300 K is heated to 3,000 K. The wavelength of the most intense EM radiation emitted

by the body at 3,000 K is 10 times the wavelength of the most intense EM radiation at 300 K. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 38. A coil of wire is connected to a galvanometer. When a bar magnet is moved in and out of the coil, the

galvanometer records a current because of electromagnetic induction. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 39. A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer

records a current because the free electrons in the moving wire experience a force from the magnetic field that pushes them through the wire. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 40. AM radio stations have greater range than FM stations because they have more powerful transmitters. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 41. N rays do not exist. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 42. The magnetic compass in an aircraft points to the geographic North Pole. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:23 PM 43. Higher frequency radio waves are reflected by the ionosphere. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 44. The ionosphere can be used to conduct radio communications over long distances. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 45. Thermograms use ultraviolet radiation to sense heat. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 46. The deviation from the way a compass needle points from the true north direction is the Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves a. greenhouse effect. b. magnetic inclination. c. magnetic declination. d. magnetic resonance effect. e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:24 PM 47. The direction of a magnetic field at a point can be determined by a. a generator. b. a compass. c. a transformer. d. electromagnetic induction. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:52 AM 48. A magnetic field exerts a force on an electric charge if the charge is a. positive. b. negative. c. moving. d. stationary. e. any of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:53 AM 49. A magnetic field is created by an electric charge if the charge is a. positive. b. negative. c. moving.

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Chapter 08: Electromagnetism and EM Waves d. stationary. e. any of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:54 AM 50. An iron nail is brought near a magnet. Which of these is not true? a. The nail has a north pole and a south pole. b. The nail becomes a north pole or a south pole. c. The magnet exerts an attractive force on the nail. d. The nail exerts an attractive force on the magnet. e. The nail is ferromagnetic.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 51. Electromagnetic induction is used in the operation of a. generators. b. transformers. c. dynamic microphones. d. regenerative braking. e. all of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:54 AM 52. The ionosphere a. reflects all EM waves. b. reflects high frequency radio waves. c. reflects low frequency radio waves. d. is responsible for the greenhouse effect. e. absorbs ultraviolet light in sunlight.

ANSWER:

c

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Chapter 08: Electromagnetism and EM Waves POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:55 AM 53. The ozone layer a. reflects all EM waves. b. reflects high frequency radio waves. c. reflects low frequency radio waves. d. is responsible for the greenhouse effect. e. absorbs ultraviolet light in sunlight.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:55 AM 54. The greenhouse effect occurs because a. low frequency EM waves are reflected from the atmosphere. b. high frequency EM waves are reflected from the atmosphere. c. the ozone layer absorbs ultraviolet light. d. carbon dioxide in the atmosphere absorbs infrared radiation. e. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:56 AM 55. The greenhouse effect is occurring because a. the ozone layer is being depleted. b. the amount of carbon dioxide in the atmosphere is increasing. c. the ionosphere reflects low frequency radiation. d. more ultraviolet radiation is penetrating the atmosphere. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves DATE MODIFIED: 7/14/2016 1:56 AM 56. Of the following gases, which is the most important contributor to the Earth’s greenhouse effect? a. water vapor b. ozone c. CFCs

d. methane

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 57. A superconductor expels any magnetic field from its interior. This is called a. electromagnetic induction. b. Maxwell’s effect. c. magnetic declination. d. the Meissner effect. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:57 AM 58. The main form of radiation that our bodies emit is a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. blackbody.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:58 AM 59. The radiation emitted from a small hole in a furnace is a. ultraviolet. b. infrared. c. x-ray. d. microwave.

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Chapter 08: Electromagnetism and EM Waves e. blackbody.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:58 AM 60. The type of EM waves used in radar is a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. blackbody.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:59 AM 61. The type of EM wave having the highest frequency is a. ultraviolet. b. infrared. c. x-rays. d. microwave. e. gamma rays.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 1:59 AM 62. The EM wave that has the lowest frequency in this list is a. ultraviolet. b. infrared. c. x-rays. d. microwave. e. gamma rays.

ANSWER: POINTS:

d 1

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Chapter 08: Electromagnetism and EM Waves QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:00 AM 63. The lowest frequency visible light is a. violet. b. red. c. blue. d. green. e. yellow.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:00 AM 64. The highest frequency visible light is a. violet. b. red. c. blue. d. green. e. yellow.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:01 AM 65. Which of the following is not a common use of microwaves? a. cooking b. medical imaging c. radar

d. communications

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 66. How can microwave ovens heat food more quickly than conventional ovens? a. Microwaves give energy directly to the molecules in the food.

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Chapter 08: Electromagnetism and EM Waves b. Conventional ovens must conduct heat from the surface to the interior of the food. c. Microwaves heat the inside as well as the surface of the food. d. all of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:24 PM 67. The EM wave that has the smallest wavelength in this list is a. ultraviolet. b. infrared. c. x-rays. d. microwave. e. gamma rays.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:01 AM 68. The type of EM radiation that causes your skin to tan is a. ultraviolet. b. infrared. c. x-rays. d. microwave. e. gamma rays.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:02 AM 69. FM radio only operates in the frequency range 88 MHz to 108 MHz because a. higher or lower frequencies are blocked by the ionosphere. b. higher and lower frequencies are not radio waves. c. the government set those limits. d. none of the above ANSWER:

c

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Chapter 08: Electromagnetism and EM Waves POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:03 AM 70. Why would a decrease in the amount of ozone in the atmosphere increase the likelihood of people getting

sunburn? a. Global temperatures would rise b. More ultraviolet radiation would reach the ground c. People would be exposed to more infrared radiation d. The premise is incorrect. Ozone and sunburn are not related ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 71. The type of EM radiation emitted when high speed electrons decelerate as they are smashed into a metal

target is a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. gamma ray.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:04 AM 72. The type of EM radiation that has wavelength just a bit shorter than that of visible light is a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. gamma ray.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:04 AM 73. The type of EM radiation that has wavelength just a bit longer than that of visible light is a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. gamma ray.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:05 AM 74. The wavelength from an FM station broadcasting at 93.9 megahertz on your radio is a. 31.3 m. b. 3.13 m. c. 0.313 m. d. 0.0313 m. e. none of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:05 AM 75. AM radio stations have greater range than FM stations because a. AM is more efficient than FM. b. they have more powerful transmitters. c. their lower frequency radio waves reflect off the ionosphere. d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:24 PM 76. What’s the Big Bang? a. the creation of the universe Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves b. microwave radiation from all directions in the sky c. the Hubble relation d. a punk rock band ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 77. Global warming a. has not yet been observed. b. has been caused by increasing levels of carbon dioxide in the atmosphere. c. has led to a depletion of the ozone layer in the atmosphere. d. has no serious consequences.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:06 AM

For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body’s absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body’s absolute temperature according to: (

in meters, T in kelvins)

Assume an object is emitting blackbody radiation.

78. If the Kelvin temperature of an object is doubled, the amount of radiant energy emitted each second is

the original amount. a. 1/16th b. half c. the same as d. 2 times e. 16 times ANSWER: POINTS:

e 1

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Chapter 08: Electromagnetism and EM Waves QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 79. As the temperature of an object increases, the wavelength of the brightest light emitted a. increases. b. decreases. c. doesn’t change. d. depends on the composition of the body. e. depends on the size of the body.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:07 AM 80. If the Kelvin temperature of a body is doubled, the wavelength of the most intense light is

the wavelength originally of the most intense light. a. 1/16th b. half c. the same as d. 2 times e. 16 times ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 81. As the temperature of a body increases, a. the body gets brighter. b. the color of the body shifts from red to white. c. the wavelength of the most intense light decreases. d. the frequency of the most intense light increases. e. all the above.

ANSWER: POINTS:

e 1

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Chapter 08: Electromagnetism and EM Waves QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:07 AM 82. A body in a room at 300 K is heated to 3,000 K. The amount of energy radiated each second by the body

increases by a factor of a. 10. b. 100. c. 1,000. d. 10,000. e. 100,000.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:08 AM 83. A body in a room at 300 K is heated to 3,000 K. The wavelength of the most intense EM radiation emitted

by the body at 3,000 K is the wavelength of the most intense EM radiation at 300 K. a. 0.0001 times b. 0.1 times c. the same as d. 10 times e. 10,000 times ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 84. About how hot does something have to get to glow red hot? a. 375 degrees F b. 800 degrees F c. 3000 K

d. 6000 K

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 85. The cosmic background radiation a. has a blackbody spectrum. b. has its peak emission in the microwave band. c. corresponds to a blackbody at a temperature of 2.726 kelvins. d. all of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:08 AM 86. The cosmic background radiation a. has a blackbody spectrum. b. has its peak emission in the microwave band. c. corresponds to a blackbody at a temperature of 2.726 kelvins. d. all of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:08 AM 87. What does “IR” stand for? a. ultraviolet b. muon neutrino c. high frequency

d. infrared

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 88. A coil of wire is connected to a galvanometer. When a bar magnet is moved in and out of the coil, the

galvanometer records a current. The current results because a. the coil acts like a transformer. b. the changing magnetic field induces an electric field in the wire. c. an electromagnetic wave is generated. d. the wire is ferromagnetic.

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Chapter 08: Electromagnetism and EM Waves e. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:25 PM 89. A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer

records a current. The current results because a. the coil acts like a transformer. b. the free electrons in the conductor experience a force when they move in the magnetic field. c. an electromagnetic wave is generated. d. the wire is ferromagnetic. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:09 AM 90. A current can be made to flow in a wire if a. it is connected to a battery. b. it is put into motion near a magnet. c. a magnet is put into motion near it.

d. all of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:10 AM 91. Making a digital recording of a sound involves a. analog-to-digital conversion. b. digital-to-analog conversion. c. electromagnetic waves.

d. all of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:10 AM 92. The magnetic compass in an aircraft points to the Copyright Cengage Learning. Powered by Cognero.

pole.

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Chapter 08: Electromagnetism and EM Waves a. magnetic north b. magnetic south c. geographic north d. geographic south ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:25 PM 93. An object at an initial temperature of 27 oC is raised to a temperature of 877 oC. How much more energy does the object emit as blackbody radiation at the higher temperature compared to the lower temperature? a. 32.5 b. 215.9 c. 864.5 d. 1,113,123 ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:25 PM 94. The ionosphere reflects a. microwaves. b. AM radio waves. c. FM radio waves. d. x-rays.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:10 AM 95. The type of radiation affected by greenhouse gasses is a. UV radiation. b. IR radiation. c. visible radiation. d. gamma radiation.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:26 PM 96. The type of EM wave used in aircraft radar is a. radio waves. b. microwaves. c. x-rays. d. gamma rays.

ANSWER: b Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 AM 97. The direction of the force on an electric charge in a magnetic field is a. in the direction of the magnetic field. b. in the direction of motion of the charge. c. perpendicular to the magnetic field. d. perpendicular to the direction of motion of the charge. e. none of the above.

ANSWER: c, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 AM 98. A magnetic field will be produced at a point in space if an electric field at that point a. exists. b. gets stronger. c. gets weaker. d. changes direction. e. all of the above ANSWER: b, c, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 AM 99. EM waves in a vacuum travel at a speed a. of c. b. varying with their wavelength. c. varying with their intensity. d. of 299,792,458 m/s.

ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:12 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body’s absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body’s absolute temperature according to: (

in meters, T in kelvins)

Assume an object is emitting blackbody radiation.

100. As the temperature of a body increases, the peak of its blackbody radiation curve a. shifts toward longer wavelength. b. shifts toward shorter wavelength. c. shifts upward. d. shifts downward. e. doesn’t change.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:12 AM 101. What makes an ordinary bar magnet magnetic? a. Electrons inside it are themselves tiny magnets. b. The magnetic fields of electrons in the magnet are aligned and add together. c. It contains magnetic charges. d. none of the above ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 102. Which recording formats employ magnetism? a. videotape b. CD c. DVD ANSWER: POINTS:

d. floppy disk a, d 1

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Chapter 08: Electromagnetism and EM Waves QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 103. Greenhouse gasses include a. water vapor. b. CO2. c. CO. d. methane.

ANSWER: a, b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:13 AM 104. The direction of a magnetic field at a point can be determined by ANSWER: a compass

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 105. Three devices that use electromagnetic induction in their operation are

,

, and

.

ANSWER:

generators, transformers, dynamic microphones, regenerative brakes

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 106. The ionosphere reflects ANSWER: low

frequency radio waves.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 107. The ozone layer absorbs ANSWER: ultraviolet

radiation from sunlight.

POINTS: 1 QUESTION TYPE: Completion Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 108. The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs ANSWER: infrared

radiation.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 109. The increase in the amount of carbon dioxide in the atmosphere is responsible for ANSWER: global warming or the greenhouse effect

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 110. The main form of radiation that our bodies emit is ANSWER: infrared

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 111.

ANSWER:

radiation is emitted from a small hole in a furnace.

Blackbody

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 112. The total radiant power emitted by a blackbody is proportional to its

raised to the

fourth power.

ANSWER:

temperature

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves 113. A glowing blackbody that appears bluish in color is ANSWER: hotter

than one that appears reddish.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 114. The type of EM waves used in radar is ANSWER: microwave

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 115. The type of EM wave having the highest frequency is ANSWER: gamma radiation

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 116.

ANSWER:

radiation causes your skin to tan.

Ultraviolet

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 117. The type of EM radiation that has wavelength just a bit shorter than that of visible light is ANSWER: ultraviolet

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 118. The type of EM radiation that has wavelength just a bit longer than that of visible light is ANSWER: infrared POINTS:

.

1

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Chapter 08: Electromagnetism and EM Waves QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 119. Lower frequency radio waves are reflected back to Earth by the ANSWER: ionosphere

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:26 PM

are emitted when high speed electrons decelerate as they are smashed into a metal target.

X rays

120.

ANSWER:

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 121. If we see two objects that have different colors, the light waves coming from them have different ANSWER:

frequencies (or wavelengths)

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 122. The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is

.

ANSWER:

300 m

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body’s absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves body’s absolute temperature according to: (

in meters, T in kelvins)

Assume an object is emitting blackbody radiation.

123. If the Kelvin temperature of an object is doubled, the amount of radiant energy emitted each second is ANSWER:

the original amount.

16 times

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 124. As the temperature of an object increases, the wavelength of the brightest light emitted ANSWER: decreases

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 125. If the Kelvin temperature of a body is doubled, the wavelength of the most intense light is

the

wavelength originally of the most intense light.

ANSWER: 1/2 POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 126. As the temperature of a body increases the color of the body shifts from ANSWER: red, white

to

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

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Chapter 08: Electromagnetism and EM Waves 127. The peak of a body’s blackbody radiation curve shifts toward longer wavelength as the temperature of the

body ANSWER:

. decreases

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 128. The peak of a body’s blackbody radiation curve shifts upward as the temperature of the body ANSWER: increases

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 129. A body in a room at 300 K is heated to 3,000 K. The amount of energy radiated each second by the body

increases by ANSWER:

.

10,000 times

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 130. A body in a room at 300 K is heated to 3,000 K. The wavelength of the most intense EM radiation emitted

by the body at 3,000 K is ANSWER: 0.1

times the wavelength of the most intense EM radiation at 300 K.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: body emitting blackbody DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 131. A coil of wire is connected to a galvanometer. When a bar magnet is moved in and out of the coil, the

galvanometer records a current. The current results because of ANSWER: electromagnetic induction

.

POINTS: 1 QUESTION TYPE: Completion Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 132. A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the

galvanometer records a current. The current results because of ANSWER: electromagnetic induction

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 133. A superconductor expels any magnetic field from its interior. This is called ANSWER: the Meissner effect

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 134. TV remote controls use ANSWER: infrared

radiation.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 135. The radio waves used to communicate with astronauts in space must be ANSWER: high POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 136. Modern aircraft weather radars operate in the ANSWER: microwave POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

frequency waves.

portion of the EM spectrum.

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Chapter 08: Electromagnetism and EM Waves 137. The auxiliary power unit (APU) on a jetliner is a generator and operates on the principle of ANSWER: electromagnetic induction.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 138. A radio transmitter broadcasts at a frequency of 200,000 Hz. What is the wavelength of the wave?

ANSWER: 1,500 m POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 139. (a) What is the frequency of an EM wave that has a wavelength of 1 millimeter? (b) What type of EM

wave is this?

ANSWER:

(a) 3 × 1011 Hz, (b) microwave

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 140. (a) What is the wavelength of the peak of the blackbody radiation curve for something at 3,000 kelvins (the

temperature of the filament of a light bulb)? (b) What type of EM wave is this?

ANSWER: (a) 9.67 × 10−7 m, (b) infrared POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 141. A transformer is designed to step down the 120 V line voltage to 9 V. If there are 400 turns on the input

coil, how many turns should there be on the output coil?

ANSWER: 30 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:31 PM 142. What is the temperature (to one decimal place and in degrees K) for radiation that has a maximum wavelength ( max) Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves of 3.5 × 10–6 m?

ANSWER: 828.6 K POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/12/2016 12:50 PM

Match each item with the correct statement below. a. blackbody radiation b. carbon dioxide c. electromagnetic induction d. gamma rays e. greenhouse effect f. infrared g. ionosphere h. lodestone i. magnetic field j. microwaves k. ozone l. radio waves m. transformer n. ultraviolet o. x rays QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 2:31 PM DATE MODIFIED: 6/15/2016 2:35 PM 143. its direction at a point is indicated by a compass ANSWER: i POINTS: 1 144. generators and dynamic microphones utilize this ANSWER: c POINTS: 1 145. low frequency radio waves reflect off this ANSWER: g POINTS: 1 146. absorbs ultraviolet light in sunlight ANSWER: k Copyright Cengage Learning. Powered by Cognero.

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Chapter 08: Electromagnetism and EM Waves POINTS:

1

147. radar utilizes this ANSWER: j POINTS: 1 148. a naturally occurring ferromagnetic substance ANSWER: h POINTS: 1 149. the highest frequency electromagnetic waves ANSWER: d POINTS: 1 150. the main form of radiation that our bodies emit ANSWER: f POINTS: 1 151. works with AC but not with DC ANSWER: m POINTS: 1 152. causes skin to tan ANSWER: n POINTS: 1 153. occurs because carbon dioxide blocks infrared but not visible light ANSWER: e POINTS: 1 154. only the very lowest frequencies of these waves can penetrate ocean water ANSWER: l POINTS: 1

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Chapter 09: Optics 1. You can see your image in a mirror because of diffuse reflection. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 2. You do not see your image when you look at a flat rough aluminum surface because of specular reflection. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 3. Liquid crystal displays make use of interference of light. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 4. Light spreads out when it passes through a narrow slit because of interference. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 5. When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on

a screen because of interference. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 6. Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of

polarization. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 7. Optical fibers work because of dispersion of light. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 8. You see colors in a rainbow because of diffraction. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 9. Blue light travels more slowly through glass than red light does. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 10. A light ray bends when it goes from one medium to another because of diffraction. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 11. A light ray can pass through a diverging lens without being deflected. a. True b. False ANSWER: True RATIONALE: One can, not all can.

POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 12. The path of a light ray through a refracting surface is reversible. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:36 PM 13. When you look into a pool of water, the depth looks less than it actually is because the light is dispersed. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics 14. Dispersion results because the speed of light in a transparent medium varies with frequency. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 15. Light is a transverse wave. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 16. Light goes slower through glass than through air. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 17. The colors you see with a prism result because the light is diffracted. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 18. Your eye’s iris changes the size of your pupil to adjust the amount of light that enters your eye. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 19. The lens in your eye and the cornea both contribute to image formation. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 20. Astigmatism is due to too flat a cornea. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 21. An EM wave with a wavelength of 500 nm will be visible. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 22. A one-way mirror works because its surfaces are half-silvered. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 23. You look at yourself in a plane mirror. If you move away from the mirror and look at yourself again, you

now see more of yourself. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 24. A curved mirror that produces an enlarged image will also have a greater field of view than a plane mirror. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 25. The ideal shape for the primary mirror of a telescope is concave parabolic. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 26. Diverging lenses have negative focal lengths. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics 27. The Hubble Space Telescope has been repaired. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 28. A convex mirror will allow you to see large areas normally hidden from your view. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 29. A person looking through eyeglasses sees real images. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 30. A diverging lens is thicker at the center than the edges. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 31. In the atmosphere, the intensity of scattered sunlight of longer wavelength is greater than that of

shorter wavelength. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 32. An image seen projected on a screen by a single lens is always inverted. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 33. A converging lens always forms an object’s image at the focal point of the lens. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 34. Halos are caused by hexagonal ice crystals in the upper atmosphere. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

The lens formula relating the image distance, p, to the focal length, f, and object distance, s, is

The magnification of a lens is

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Chapter 09: Optics 35. A movie projector is equipped with a 0.5-m focal length lens that is positioned 0.505 m in front of the film.

The distance in front of the lens that a screen must be placed for an image to be in focus is 50.5 m. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/12/2016 12:51 PM 36. For the projector in the previous problem, the image is 10 times as large as the object. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 37. The magnification of the magnifying glass in the previous problem is –3. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 38. A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The image of the stamp is

located 30 cm above the magnifying glass. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics DATE MODIFIED: 6/13/2016 10:32 AM 39. LCDs operate on the principle of refraction through glass. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 40. The speed of light in any transparent medium is the same as the speed of light in a vacuum. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 41. The sky is blue due to air molecules scattering sunlight in all directions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 42. In order to see a rainbow, the Sun must be directly in front of you. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:37 PM 43. You can see your image in a mirror because of a. interference.

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Chapter 09: Optics b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:09 PM 44. You do not see your image when you look at a flat rough aluminum surface because of a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:09 PM 45. What is meant by the “normal” to a surface? a. a line perpendicular to the surface at a given point b. the angle between the surface and the light ray c. a line parallel to the surface at a given point d. the direction of a reflected ray ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 46. Which of the lines in the figure represents the normal to the surface at point P?

a. 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics b. 2 c. 3 d. 4 e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 47. Which angle is the angle of incidence for the light ray shown approaching the plane mirror?

a. 60° b. 30° c. neither d. either ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 48. Liquid crystal displays make use of a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:09 PM 49. Why are optical fibers important for communication? a. They can carry thousands of times the information that wires can.

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Chapter 09: Optics b. Light goes faster than electricity. c. They carry digital information. Wires can’t carry digital information. d. all of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 50. The colors of objects we see by reflected light are due to a. interference. b. selective absorption. c. specular reflection.

d. diffuse reflection.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:10 PM 51. A helium neon laser generates light of 632.8-nm wavelength. What color is that? a. blue b. yellow c. red d. green ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/12/2016 12:51 PM 52. Light spreads out when it passes through a narrow slit because of a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:10 PM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics 53. Thin film interference is responsible for the colors of a. bird feathers. b. gasoline spills. c. soap bubbles.

d. all of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:10 PM 54. When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on

a screen because of a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 PM 55. Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 PM 56. According to the law of reflection, a light ray striking a mirror at an angle of incidence of 30 degrees will

leaves the mirror at an angle of a. 60 degrees. b. 30 degrees. c. less than 30 degrees. d. none of the above.

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Chapter 09: Optics ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 PM 57. Optical fibers work because of a. interference. b. diffraction. c. total internal reflection. d. diffuse reflection. e. polarization.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:11 PM 58. You see colors in a rainbow because of a. interference. b. diffraction. c. specular reflection. d. dispersion. e. polarization.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:12 PM 59. If you see a rainbow near the time of sunset, where in the sky will the rainbow be? a. overhead b. toward the eastern horizon c. toward the western horizon d. toward the northern horizon e. toward the southern horizon ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 60. Which of the following is not involved in the formation of a rainbow? a. interference b. dispersion c. internal reflection

d. refraction

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 61. An object is 50 cm in front of a plane mirror. Its image will be located a. 50 cm in front of the mirror. b. at the mirror’s surface. c. 50 cm behind the mirror. d. 25 cm in front of the mirror. e. 25 cm behind the mirror.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:12 PM 62. A light ray bends when it goes from one medium to another because of a. interference. b. diffraction. c. specular reflection. d. refraction. e. polarization.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:12 PM 63. In optics, what is meant by an “interface?” a. optically connecting one computer to another b. using the image created by one lens as the object for another lens c. when the crest of one wave lines up with the trough of another wave Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics d. none of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 64. When you look into a pool of water, the depth looks less than it actually is because of a. interference. b. diffraction. c. specular reflection. d. refraction. e. polarization.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:13 PM 65. In this figure a light ray travels between air and glass. Which way did the light ray go?

a. from the air into the glass b. from the glass into the air c. either A or B. d. None of the above—this depicts an impossible situation.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:13 PM 66. In air a light source emits a wavelength of 630 nm. Under water the wavelength of this light will be a. 630 nm. b. less than 630 nm. c. more than 630 nm.

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Chapter 09: Optics d. unpredictable.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:13 PM 67. The variation of the speed of light in a transparent medium with frequency results in a. interference. b. diffraction. c. dispersion. d. diffuse reflection. e. polarization.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:14 PM 68. You see colors with a prism because of a. interference. b. diffraction. c. specular reflection. d. dispersion. e. polarization.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:14 PM 69. Rank the following media in order according to the speed of light in them, from slowest to fastest: vacuum,

air, water and glass. a. air, water, glass, vacuum b. glass, air, water, vacuum c. water, glass, air, vacuum d. glass, water, air, vacuum e. none of the above ANSWER: POINTS:

d 1

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Chapter 09: Optics QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 70. The sky is blue because of a. interference. b. diffraction. c. scattering. d. dispersion. e. polarization.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:14 PM 71. The primary mirror in an astronomical telescope must be a a. half-silvered mirror. b. convex mirror. c. concave mirror. d. plane mirror.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:15 PM 72. New telescopes are using “adaptive optics.” What is that? a. using parabolic instead of spherical mirrors b. using computer image processing to enhance images c. building mirrors in hexagonal segments d. continually adjusting the mirror’s shape during observations ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 73. What is meant by the term “plane mirror?”

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Chapter 09: Optics a. not an unusual mirror

b. a flat mirror

c. a horizontal mirror d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 74. Parallel light rays from a distant object strike the surface of a concave mirror. After reflecting from

the mirror’s surface, the rays will converge at a. the mirror’s focal point. b. a point beyond the mirror’s focal point. c. a point nearer than the mirror’s focal point. d. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:15 PM 75. Diverging light rays from a nearby object (a few focal lengths away from the mirror) strike the surface of a

concave mirror. After reflecting from the mirror’s surface, the rays will converge at a. the mirror’s focal point. b. a point beyond the mirror’s focal point. c. a point nearer than the mirror’s focal point. d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:15 PM 76. What makes pink ink pink? a. refraction b. selective absorption c. dispersion

d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics DATE MODIFIED: 6/13/2016 10:32 AM 77. Upon entering a medium in which the speed of light is 1.5 × 108 m/s from a medium in which the speed of

light is 2 × 108 m/s, an oblique light ray will be the normal to the interface between the two media. a. bent away from b. bent toward c. travel along d. remain undeviated with respect to ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 78. A one-way mirror works because of a. interference. b. diffraction. c. its surfaces being half-silvered. d. dispersion. e. polarization.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:16 PM 79. The ideal shape for the primary mirror of a telescope is a. concave circular. b. convex circular. c. concave parabolic. d. convex parabolic. e. plane.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:16 PM 80. The type of mirror that will allow you to see large areas normally hidden from your view is a. concave. b. convex.

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Chapter 09: Optics c. plane. d. half-silvered. e. Polaroid.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:16 PM 81. An image formed using a converging lens a. is always real. b. is always virtual. c. can have negative magnification. d. can never be upright.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:17 PM 82. Image height divided by object height gives a. image distance. b. object distance. c. magnification. d. real image size. e. virtual image size.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:17 PM 83. Choose the lens having the shortest focal length.

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Chapter 09: Optics a.

b.

c.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 84. A lens that is thicker at the center than the edges a. is a converging lens. b. is a diverging lens. c. always forms a real image. d. always forms a virtual image. e. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:17 PM 85. A nanometer is a. one thousandth of a meter. b. one millionth of a meter. c. one billionth of a meter. d. one trillionth of a meter. e. none of the above.

ANSWER:

c

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Chapter 09: Optics POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:18 PM 86. Of EM waves having these wavelengths, which would be visible? a. 100 nm b. 500 nm c. 1000 nm d. 1 nm e. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 87. Two otherwise identical light waves arriving at the same point with peak matching valley undergo a. constructive interference. b. destructive interference. c. polarization. d. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:18 PM 88. The fact that light can be polarized shows that light is a. polar. b. monochromatic. c. an electromagnetic wave. d. a transverse wave.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:18 PM

The lens formula relating the image distance, p, to the focal length, f, and object distance, s, is Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics

The magnification of a lens is

89. A movie projector is equipped with a 0.5-m focal length lens that is positioned 0.505 m in front of the film.

The distance in front of the lens that a screen must be placed for an image to be in focus is a. 0.5 m. b. 0.505 m. c. 50.5 m. d. 500 m. e. 505 m.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:19 PM 90. For the projector in the previous problem, the image is a. 0.001

times as large as the object.

b. 1.01 c. 50 d. 100 e. 101 ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 91. A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The image of the stamp is

located a. 30 cm above the magnifying glass. b. 30 cm below the magnifying glass. c. 30 cm above the stamp. d. 30 cm below the stamp. e. 15 cm from the magnifying glass.

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Chapter 09: Optics ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:19 PM 92. A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The magnification of the

magnifying glass in is a. +3. b. –3. c. +15. d. –15. e. +30.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:20 PM 93. The mirror on the passenger side of modern automobiles is a a. convex b. concave c. plane d. spherical ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 94. The advantage of a convex mirror is that it has a a. narrow b. linear c. wide d. open ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

mirror

field of view

95. The light directly from the Sun is Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics a. polarized. b. unpolarized. c. horizontally polarized. d. vertically polarized.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:20 PM 96. In an astronomical telescope the secondary mirror is a. concave. b. convex. c. spherical. d. plane.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:20 PM 97. Halos are most often observed in the a. spring b. summer c. fall d. winter ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

time of the year

98. When a light ray traveling in air meets the surface of a piece of glass, which of the following occur at the

interface? a. The light is totally reflected. b. Some of the light is reflected back into the air. c. Some light enters the glass and is refracted toward the normal. d. Some light enters the glass and is refracted away from the normal. e. All of the light enters the glass.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:39 PM 99. When light enters glass from air, which of these properties of the light change?

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Chapter 09: Optics a. frequency

b. wavelength

c. speed d. all of the above ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 100. Fresnel lenses are a. made of mirror segments. b. made of the surface portions of a regular lens. c. found in some auto headlamps and theater lights and rear windows of RVs. d. all of the above.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:20 PM 101. You look at yourself in a plane mirror. If you move away from the mirror and look at yourself again, you

now see a. more of yourself. b. less of yourself. c. the same amount of yourself. d. a larger image of yourself. e. a smaller image of yourself.

ANSWER: c, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:21 PM 102. The Hubble Space Telescope a. has a flawed primary mirror. b. has been repaired. c. has failed. d. none of the above ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:21 PM 103. If the magnification produced by an optical system is negative, the image is a. smaller than the object. b. inverted. c. upside down. d. all of the above.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:21 PM 104. A person looking through eyeglasses sees a. real images. b. virtual images. c. erect images. d. inverted images. e. polarized images.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:22 PM 105. A lens that is thinner at the center than the edges a. is a converging lens. b. is a diverging lens. c. always forms a real image. d. always forms a virtual image. e. none of the above ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:22 PM 106. An image seen projected on a screen by a single lens Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics a. is always erect. b. is always inverted. c. is a real image. d. is a virtual image. e. none of the above ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:22 PM 107. In the case of magnification, if image distance (p) is positive, the image is to the a. right b. left c. real d. imaginary e. virtual ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

of the lens and

108. You do not see your image when you look at a flat rough aluminum surface because of ANSWER: diffuse reflection

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 109. Liquid crystal displays make use of ANSWER: polarization

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 110. Light spreads out when it passes through a narrow slit because of ANSWER: diffraction POINTS: 1 QUESTION TYPE: Completion Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 09: Optics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 111. When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on

a screen because of .

ANSWER: interference POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 112. Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of

.

ANSWER: polarization POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 113. Light is totally absorbed when sent through two Polaroid filters if their transmission axes are ANSWER: perpendicular

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:40 PM 114. Optical fibers work because of ANSWER: total internal reflection

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 115. You see colors in a rainbow because of ANSWER: dispersion POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 09: Optics DATE MODIFIED: 6/13/2016 10:32 AM 116. A lens is used to compensate for hyperopia.

ANSWER: converging POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 117. When myopia is corrected surgically, the shape of the ANSWER: cornea

is changed.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 118. A light ray bends when it goes from one medium to another because of ANSWER: refraction POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

.

119. The critical angle is that angle of incidence for which the angle of refraction equals ANSWER: 90 degrees

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 120. When you look into a pool of water, the depth looks less than it actually is because of ANSWER: refraction

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 121.

ANSWER:

results because the speed of light in a transparent medium varies with frequency.

Dispersion

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Chapter 09: Optics POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 122. The colors you see with a prism result because of ANSWER: dispersion

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 123. A one-way mirror works because ANSWER: its surfaces are half-silvered

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 124. The ideal shape for the primary mirror of a telescope is ANSWER: concave parabolic POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 125. The two types of reflection are ANSWER: specular, diffuse POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

and

.

.

126. The type of mirror that will allow you to see large areas normally hidden from your view is ANSWER: convex

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics DATE MODIFIED: 6/13/2016 10:32 AM 127. Image height divided by object height gives ANSWER: magnification POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

.

128. A person looking through eyeglasses sees ANSWER: virtual

images.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 129. A ANSWER:

lens is thicker at the center than the edges. converging

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 130. A ANSWER:

lens is thinner at the center than the edges. diverging

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 131. The orientation of an image seen projected on a screen by a single lens is always ANSWER: inverted

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

The lens formula relating the image distance, p, to the focal length, f, and object distance, s, is Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics

The magnification of a lens is

132. A movie projector is equipped with a 0.5-m focal length lens that is positioned 0.505 m in front of the film.

The distance in front of the lens that a screen must be placed for an image to be in focus is ANSWER: 50.5 m

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/12/2016 12:53 PM 133. For the projector in the previous problem, the image is ANSWER: 100

times as large as the object.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 134. A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The image of the stamp is

located

the magnifying glass.

30 cm below

ANSWER: POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

135. The magnification of the magnifying glass in the previous problem is ANSWER: +3 POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: lens formula relating DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 09: Optics 136. The sky is blue because of ANSWER: dispersion POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 137. In order to see a rainbow, the Sun must be ANSWER: behind POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:38 PM

.

you

138. The two most common types of poor eyesight are the result of improper ANSWER: focusing POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:23 PM 139. If the object distance (s) is less than the focal length (f) then the image is ANSWER: virtual POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

.

.

140. A movie projector is equipped with a 0.5-meter focal length lens that is positioned 0.506 meters from the

film. (a) How far from the lens must the screen be if the image on it is to be in focus? (b) How many times larger is the image than the object? (c) Is the image produced a real or a virtual image?

ANSWER: (a) 42.2 m, (b) 83.3, (c) real POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics 141. A magnifying glass with focal length 15 centimeters is placed 12 centimeters above a stamp.

(a) Where is the image? (b) What is the magnification? (c) Is the image produced a real or a virtual image?

ANSWER: (a) 60 cm below the magnifying glass, (b) 5, (c) virtual POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 142. When an object is viewed through a magnifying glass, an object 20 cm high appears as an upright image 100 cm high. What is the magnification?

ANSWER: 5 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

Match each item with the correct statement below. a. constructive interference b. converging c. convex mirror d. destructive interference e. diffuse reflection f. diffraction g. dispersion h. diverging i. liquid crystal display j. magnification k. one-way mirror l. parabolic m. real n. specular reflection o. total internal reflection p. virtual QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 2:41 PM DATE MODIFIED: 6/15/2016 2:45 PM 143. ideal shape for a telescope’s primary mirror ANSWER: l POINTS: 1 144. mirrors use this ANSWER: n POINTS: 1 145. makes use of crossed polarizers Copyright Cengage Learning. Powered by Cognero.

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Chapter 09: Optics ANSWER: i POINTS: 1 146. what keeps a light ray inside an optical fiber ANSWER: o POINTS: 1 147. occurs when light passes through a very narrow slit ANSWER: f POINTS: 1 148. occurs when two light waves arrive at a point out of phase ANSWER: d POINTS: 1 149. it is half-silvered ANSWER: k POINTS: 1 150. lens that is thicker at the center ANSWER: b POINTS: 1 151. the image height divided by the object height ANSWER: j POINTS: 1 152. occurs because the speed of light in a transparent substance is frequency dependent ANSWER: g POINTS: 1 153. type of image seen projected onto a screen ANSWER: m POINTS: 1 154. the type of mirror on the passenger side of modern automobiles ANSWER: c POINTS: 1

Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 1. The photoelectric effect occurs when electrons are emitted when light strikes the surface of a metal. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 2. A photon is quantum of electromagnetic radiation. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 3. An excited atom can lose energy by emitting an electron. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 4. An atom can be excited into a higher energy state by absorbing a photon. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 5. In an energy level transition from the n = 2 state to the n =1 state for a hydrogen atom a photon will

be emitted. a. True b. False Copyright Cengage Learning. Powered by Cognero.

Page 1

Chapter 10: Atomic Physics ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 6. In the Bohr model of the hydrogen atom both the energy and orbital angular momentum of the electron are

quantized. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 7. The uncertainty principle states that a particle cannot be precisely localized. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 8. Electrons in atoms move about the nucleus in well-defined circular orbits. a. True b. False ANSWER: False RATIONALE: The old Bohr model is not correct.

POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:47 PM 9. The early Solvay Conferences had a great effect upon the development of quantum mechanics. a. True b. False ANSWER: True POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 10. The element helium was discovered by studying the Sun’s spectrum. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:47 PM 11. The ground state is the lowest energy level in an atom. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 12. The highest energy level in an atom corresponds to n = 1. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 13. An x-ray can be emitted when an electron undergoes an energy level transition. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 3:35 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 14. A 100 eV electron and a 100 eV proton have equal de Broglie wavelengths. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 15. In a blackbody, the energy of the oscillating atoms is quantized. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 16. The peak of the radiation curve of a blackbody moves upward toward higher intensity as its temperature

increases. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 17. The peak of the radiation curve of a blackbody moves toward larger wavelength as its temperature increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 18. The energy of an oscillating atom in a blackbody can be any value within a certain limited range. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:48 PM 19. Perfect absorbers of electromagnetic radiation are also perfect emitters. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 20. There is a direct correlation between the absorption and emission spectra of a particular gas. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 21. Two different gases may have the same emission line spectrum. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 22. As the intensity of light is increased in a photoelectric effect experiment, the energy of the emitted electrons

increases. a. True b. False ANSWER: POINTS:

False 1

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Chapter 10: Atomic Physics QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 23. When the frequency of the light is increased in a photoelectric effect experiment, the energy of the emitted

electrons increases. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 24. Photocopiers make use of the photoelectric effect. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 25. Characteristic peaks occur in an x-ray spectrum of an atom because electrons in the atom make transitions

to lower energy levels after being bombarded with high energy electrons. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 3:35 AM 26. The characteristic peaks in an x-ray spectrum of an atom occur because of rapid deceleration of

the bombarding electrons. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 3:36 AM 27. The chemical composition of stars can be determined from lines in their spectra. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 28. At any instant in time, it is possible to specify simultaneously the position and the momentum of a particle to

arbitrarily high precision. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 29. A laser emits monochromatic and coherent light. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 30. Light being amplified by stimulated emission of radiation is the principle of the photoelectric effect. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 31. A laser can be used for very accurate measurements of distances between objects. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 32. UPC price scanners at supermarket checkouts use laser holography to read the bar codes because

the packages are three dimensional. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM

The energy level diagram for hydrogen

33. The energy of a photon emitted in a transition from the n = 3 state to the n = 2 state is 1.9 eV. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 34. The energy of the most energetically possible photon emitted is 10.2 eV. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 35. The ionization energy of hydrogen is 13.6 eV. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 36. The smallest energy of an absorbed photon that will raise a hydrogen atom from its ground state to its

first excited state is 13.6 eV. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 37. If an electron acquires more than the ionization energy, the electron will return to the ground state. a. True b. False ANSWER: False POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 38. The aurora borealis is an example of atoms and molecules in the atmosphere absorbing photons and exciting the atoms and molecules to emit spectra. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/15/2016 2:49 PM 39. The fact that two electrons cannot occupy the same quantum state at the same time is the Heisenberg exclusion principle. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 40. When the speed of an electron is increased the de Broglie wavelength is decreased. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 41. Electrons emitted when light strikes the surface of a metal is a. photon emission. b. photon absorption. c. the photoelectric effect. d. a laser. e. an emission spectrum.

ANSWER: c Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:14 AM 42. A quantum of electromagnetic radiation is a a. wave function. b. photon. c. de Broglie wave. d. laser. e. hologram.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:14 AM 43. What does it mean for something to be “quantized?” a. It can have only certain discrete values. b. It can have only integer values. c. It can have values only between certain limits. d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 44. What is the symbol used for Planck’s constant? a. p b. c. h d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 7/14/2016 2:15 AM 45. The energy associated with a photon of blue light is

the energy associated with a photon

of red light.

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Chapter 10: Atomic Physics a. greater than

b. less than

c. equal to d. unrelated to ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:32 AM DATE MODIFIED: 6/13/2016 10:32 AM 46. An excited atom can lose energy by a. emitting a photon. b. absorbing a photon. c. undergoing the photoelectric effect. d. increasing its de Broglie wavelength. e. the uncertainty principle.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:16 AM 47. An atom can be excited into a higher energy state by a. emitting a photon. b. absorbing a photon. c. undergoing the photoelectric effect. d. decreasing its de Broglie wavelength. e. the uncertainty principle.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:16 AM 48. In the Bohr model of the hydrogen atom a. energy is quantized. b. the electron’s angular momentum is quantized. c. the emission spectrum is quantized. d. the absorption spectrum is quantized. e. all of the above ANSWER: e Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:16 AM 49. The fact that a particle cannot be precisely localized is the a. photoelectric effect. b. uncertainty principle. c. principle of a hologram. d. principle of a laser. e. reason why photons are emitted.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:17 AM 50. What is “excluded” by the Pauli exclusion principle? a. certain values of angular momentum b. precise values of both position and momentum c. electrons in the same quantum state d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 51. The lowest energy level in an atom is its a. ionization level. b. emission level. c. absorption level. d. photon level. e. ground state.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:17 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 52. The highest energy level in an atom is its a. ionization level. b. emission level. c. absorption level. d. photon level. e. ground state.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:17 AM 53. If the speed of an electron increases, its de Broglie wavelength a. increases. b. decreases. c. stays the same.

d. may increase or decrease.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:18 AM 54. Electron diffraction shows a. that electrons behave like waves. b. the photoelectric effect. c. characteristic x-ray spectra. d. that electrons in atoms have only certain allowed energies.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:18 AM 55. A three-dimensional image made using a laser is a(n) a. emission spectrum. b. absorption spectrum. c. wave function. d. hologram. e. photoelectric effect.

ANSWER:

d

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Chapter 10: Atomic Physics POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:18 AM 56. Which of these is not involved in the operation of lasers? a. stimulated emission b. population inversion c. metastable state

d. blackbody radiation

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 57. What is coherent light? a. light of a single wavelength b. light that is all in phase c. light that is polarized in one direction d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 58. The quantity that is quantized in the oscillating atoms of a blackbody is a. angular momentum. b. energy. c. the emission spectrum. d. the absorption spectrum. e. the wave function.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:19 AM 59. The person who first explained the blackbody spectrum was a. Max Planck.

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Chapter 10: Atomic Physics b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:19 AM 60. What quantities are plotted on a blackbody radiation curve? a. total radiated energy vs. temperature b. radiation intensity vs. wavelength c. wavelength of peak emission vs. temperature d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 61. The person who first explained the photoelectric effect was a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:19 AM 62. Which of the following devices make use of the photoelectric effect? a. digital cameras b. photocopiers c. laser printers d. solar cells e. all of the above Copyright Cengage Learning. Powered by Cognero.

Page 16

Chapter 10: Atomic Physics ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 63. The person who first explained the discrete hydrogen atom spectrum was a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:20 AM 64. What is meant by a line spectrum? a. a spectrum which is straight b. a spectrum made of bright lines in certain places, separated by dark gaps c. a spectrum made by a hot filament stretched into a straight line d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 65. The spectra of different elements can be distinguished because a. they have the same spectral lines, but the lines are of different intensities. b. they have spectral lines in different positions. c. every element has one unique spectral line. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:20 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 66. The person who expounded the uncertainty principle was a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:20 AM 67. The person who developed the concept of a wave function was a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:21 AM 68. When the intensity of the light is increased in a photoelectric effect experiment, the energy of the emitted

electrons a. increases. b. decreases. c. stays the same. d. becomes more quantized. e. becomes less quantized.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:21 AM 69. When the frequency of the light is increased in a photoelectric effect experiment, the energy of the emitted

electrons Copyright Cengage Learning. Powered by Cognero.

Page 18

Chapter 10: Atomic Physics a. increases. b. decreases. c. stays the same. d. becomes more quantized. e. becomes less quantized.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:21 AM 70. The characteristic peaks in an x-ray spectrum of an atom occur because a. of photon absorption. b. of the photoelectric effect. c. electrons in the atom make transitions to lower energy levels. d. of the uncertainty principle. e. of rapid deceleration of the bombarding electrons.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:22 AM 71. The continuous part of an x-ray spectrum of an atom occurs because a. of photon absorption. b. of the photoelectric effect. c. electrons in the atom make transitions to lower energy levels. d. of the uncertainty principle. e. of rapid deceleration of the bombarding electrons.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:23 AM 72. In a laser a. light is amplified by stimulated emission of radiation. b. the emitted light is monochromatic. c. the emitted light is coherent.

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Chapter 10: Atomic Physics d. there is a population inversion of electrons in atoms. e. all of the above ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:23 AM 73. Lasers are used a. to produce holograms. b. in surgery. c. to measure distances between objects accurately. d. in DVD and compact disc players. e. all of the above ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:24 AM 74. The aurora borealis (northern lights) are caused by a. sunlight reflecting from polar ice. b. emissions from atoms and molecules in the upper atmosphere excited by electrons from the Sun. c. thunderstorms. d. an unknown process.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:24 AM

The energy level diagram for hydrogen

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Chapter 10: Atomic Physics

75. The energy of a photon emitted in a transition from the n = 3 state to the n = 2 state is a. 1.5 eV. b. 1.9 eV. c. 3.4 eV. d. 10.2 eV. e. 13.6 eV. ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:25 AM 76. The energy of the most energetically possible photon emitted is a. 1.5 eV. b. 1.9 eV. c. 3.4 eV. d. 10.2 eV. e. 13.6 eV. ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:26 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 77. The ionization energy of hydrogen is a. 1.5 eV. b. 1.9 eV. c. 3.4 eV. d. 10.2 eV. e. 13.6 eV. ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:26 AM 78. The smallest energy of an absorbed photon that will raise a hydrogen atom from its ground state to its

first excited state is a. 1.5 eV. b. 1.9 eV. c. 3.4 eV. d. 10.2 eV. e. 13.6 eV. ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:27 AM 79. How small an object can a scanning tunneling microscope “see?” a. about the size of a mushroom spore b. about the size of a living cell c. as small as a single atom d. as small as the nucleus of an atom ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 80. The energy of a photon that ionizes a hydrogen atom from the ground state will be that ionizes a different hydrogen atom from the first excited state (n – 2).

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the energy of a photon Page 22

Chapter 10: Atomic Physics a. larger than b. smaller than c. equal to d. twice ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 12:54 PM 81. The Balmer series of emission lines from hydrogen lie in the a. near infrared b. infrared c. visible d. ultraviolet ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

part of the EM spectrum.

82. A population inversion is a circumstance within a laser system in which there are

atoms with their

electrons in an upper excited state than in a specific preferred lower state. a. more b. fewer c. the same amount d. ionized ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 83. The red line in the helium spectrum is closer to orange than the red line in the hydrogen spectrum, indicating that it has a higher frequency. Therefore, the photons of red light emitted by helium have energy than those emitted by hydrogen. a. lower b. higher c. the same d. more ionization ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 84. According to the Pauli Exclusion Principle for n = 4, the occupation limit of electrons is a. 4. b. 8. c. 16. d. 32.

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Chapter 10: Atomic Physics ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:28 AM 85. In which of the following energy level transitions for a hydrogen atom is a photon emitted? a. n = 1 to n = 2 b. n = 3 to n = 2 c. n = 2 to n = 1 d. n = 1 to n = 4 e. n = 4 to n = 3 ANSWER: b, c, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 12:55 PM 86. Which of the following devices use lasers? a. DVD players b. fiber optics communication systems c. photocopiers d. UPC price scanners ANSWER: a, b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 87. As the temperature of a blackbody increases, the peak of its radiation curve moves a. upward toward higher intensity. b. downward toward lower intensity. c. toward larger wavelength. d. toward smaller wavelength. e. none of the above.

ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics DATE MODIFIED: 7/14/2016 2:29 AM 88. The mathematical model of quantum mechanics was principally founded by a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.

ANSWER: d, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:30 AM 89. Electrons in atoms a. orbit the nucleus in well-defined circular orbits. b. radiate electromagnetic energy continuously. c. act as if spread out in a “cloud” around the nucleus. d. behave as predicted by quantum mechanics.

ANSWER: c, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:31 AM 90. Laser light is and monochromatic, and usually of much bulb. a. coherent b. incoherent c. lower d. higher ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

intensity than the light from the light

91. The occurs when electrons are emitted when light strikes the surface of a metal.

ANSWER: photoelectric effect POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 92. A quantum of electromagnetic radiation is a ANSWER: photon

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 93. An excited atom can lose energy by emitting a ANSWER: photon

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 94. An atom can be excited into a higher energy state by absorbing a ANSWER: photon POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 95. Two things that are quantized in the Bohr model of the hydrogen atom are ANSWER: energy, angular momentum, and the spectrum POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 96. The ANSWER:

.

and

.

states that a particle cannot be precisely localized. uncertainty principle

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 97. The lowest energy level in an atom is its Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 10: Atomic Physics ground state

ANSWER:

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 98. The highest energy level in an atom corresponds to n = ANSWER: infinity

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 99. In an energy level transition from the n = 2 state to the n = 1 state for a hydrogen atom a photon will be

. emitted

ANSWER:

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 12:55 PM 100. A is a three-dimensional image made using a laser.

ANSWER: hologram POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 2:53 PM 101. In a blackbody, the of the oscillating atoms is quantized.

ANSWER: energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 102. The peak of the radiation curve of a blackbody moves upward toward higher intensity as its temperature

.

ANSWER:

increases

POINTS:

1

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Chapter 10: Atomic Physics QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 103. The peak of the radiation curve of a blackbody moves toward larger wavelength as its temperature

.

ANSWER:

decreases

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 104. The person who first explained the blackbody spectrum was ANSWER: Max Planck POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

105. When something is restricted to having only certain numerical values, it is said to be ANSWER: quantized POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 106. The person who first explained the photoelectric effect was ANSWER: Albert Einstein

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 107. The person who first explained the discrete hydrogen atom spectrum was ANSWER: Neils Bohr

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics DATE MODIFIED: 6/13/2016 10:33 AM 108. The person who expounded the uncertainty principle was ANSWER: Werner Heisenberg POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

109. The principal founders of the mathematical model of quantum mechanics were

and

.

ANSWER:

Erwin Schrödinger, Werner Heisenberg

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 2:52 PM 110. The person who developed the concept of a wave function was ANSWER: Erwin Schrödinger

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 2:52 PM 111. The person who developed the exclusion principle was ANSWER: Wolfgang Pauli POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

112. When the intensity of light is increased in a photoelectric effect experiment, the energy of the emitted

electrons ANSWER:

. stays the same

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

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Chapter 10: Atomic Physics 113. When the frequency of the light is increased in a photoelectric effect experiment, the energy of the emitted

electrons

. increases

ANSWER:

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

in an x-ray spectrum of an atom occur because electrons in the atom make transitions to lower energy levels after being bombarded with high energy electrons.

ANSWER: Characteristic peaks 114.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:34 AM

in an x-ray spectrum of an atom occurs because of rapid deceleration of the bombarding electrons.

ANSWER: A continuous variation 115.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:34 AM 116. Two devices that make use of the wavelike nature of electrons are the

and the

.

ANSWER: electron microscope, scanning tunneling microscope (STM) POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 117. In a laser the emitted light is .

ANSWER: monochromatic, coherent POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

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Chapter 10: Atomic Physics 118. Four different uses of lasers are , , , and , ANSWER: to produce holograms, for surgery, to measure accurately distances between objects, in DVD

and compact disc players, to cut metals, to induce nuclear fusion reactions, to transmit telephone information along optical fibers, in checkout counter price scanners.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

The energy level diagram for hydrogen

119. The energy of a photon emitted in a transition from the n = 3 state to the n = 2 state is ANSWER: 1.9 eV POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 120. The energy of the most energetically possible photon emitted is ANSWER: 13.6 eV

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 121. The ionization energy of hydrogen is ANSWER: 13.6 eV

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 122. The smallest energy of an absorbed photon that will raise a hydrogen atom from its ground state to its

first excited state is ANSWER:

.

10.2 eV

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False PREFACE NAME: energy level hydrogen DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 123. In the Bohr model of the atom, a photon may be

when an electron jumps from a large, high

energy orbit to a smaller, low energy orbit.

ANSWER: emitted POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 124. An atom is said to have been ANSWER: ionized

when it absorbs a photon with sufficient energy to free an electron.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 125. A hot luminous solid emits a

spectrum, while a hot luminous gas produces a

spectrum.

ANSWER:

continuous, line

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics 126. The energy of a photon is proportional to its frequency and ANSWER: directly, inversely POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 127. An electron absorbing an ultraviolet photon will be ejected with a a violet photon.

ANSWER: higher POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

proportional to its wavelength.

energy than an electron absorbing

128. Ionization is a process whereby an atom acquires enough energy so that one or more of its electrons from the nucleus.

ANSWER: breaks free POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 129. Find the energy of a photon whose frequency is 5 × 1012 Hz. ANSWER: 3.32 × 10−21 J POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 130. A photon emitted by an excited atom has an energy of 5 eV. What is its frequency?

ANSWER: 1.21 × 1015 Hz POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 131. What is the de Broglie wavelength of an electron traveling 100 m/s?

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Chapter 10: Atomic Physics ANSWER:

7.28 × 10−6 m

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 132. A hydrogen atom emits a photon as it makes a transition from the n = 4 state to the n = 3 state. The

energies of these two states are –0.9 eV and –1.5 eV, respectively. (a) What is the energy of the photon? (b) What is its frequency?

ANSWER:

(a) 0.6 eV, (b) 1.5 × 1014 Hz

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 133. According to the Pauli Exclusion Principle for n = 4, the occupation limit of electrons is: ANSWER: 32 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 12:56 PM

Match each item with the correct statement below. a. angular momentum b. de Broglie wavelength c. emission spectrum d. energy e. ground state f. hologram g. laser h. photoelectric effect i. photon j. photon absorption k. photon emission l. uncertainty principle m. wave function QUESTION TYPE: Matching HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics DATE CREATED: 6/15/2016 2:54 PM DATE MODIFIED: 6/15/2016 2:57 PM 134. a quantum of electromagnetic radiation ANSWER: i POINTS: 1 135. light causing electrons to be released from the surface of a metal ANSWER: h POINTS: 1 136. one way for an excited atom to lose energy ANSWER: k POINTS: 1 137. in the Bohr model of the atom this is quantized ANSWER: a POINTS: 1 138. tells us that particles can’t be precisely localized ANSWER: l POINTS: 1 139. the lowest energy level in an atom ANSWER: e POINTS: 1 140. causes an electron to make a transition to a higher energy level ANSWER: j POINTS: 1 141. light amplification by stimulated emission of radiation ANSWER: g POINTS: 1 142. a three dimensional image made using a laser ANSWER: f POINTS: 1 143. oscillating atoms in a blackbody have this quantized ANSWER: d POINTS: 1 144. the aurora borealis is an example of this ANSWER: c POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 10: Atomic Physics

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Chapter 11: Nuclear Physics 1. The atomic number equals the number of protons in a nucleus. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 2. Two isotopes have the same mass number. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 3. The symbol indicating the atomic number of a nucleus is A. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 4. The symbol indicating the number of protons in a nucleus is N. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 5. The symbol indicating the mass number of a nucleus is A. a. True b. False ANSWER: True Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 6. The symbol indicating the number of nucleons in a nucleus is N. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 7. The symbol indicating the number of neutrons in a nucleus is N. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 8. An alpha particle is another name for a helium nucleus. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 9. Helium always has two neutrons in its nucleus. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE MODIFIED: 6/13/2016 10:33 AM 10. In the case of alpha decay, the atomic number of the nucleus increases. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 11. A beta particle is another name for a helium nucleus. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 12. A gamma ray is another name for an electron. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 13. Alpha, beta, and gamma particles are all deflected by a magnetic field. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 14. When radium-223 (Z = 88) decays to radon-119 (Z = 86), an alpha particle is emitted. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 15. When sulfur-35 (Z = 16) decays to chlorine-35 (Z = 17), an alpha particle is emitted. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 16. When a neutron decays to a proton, a beta particle is emitted. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 17. When a nucleus in an excited state decays to the ground state, a beta particle is emitted. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 18. The number of protons in a nucleus equals the number of neutrons. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 19. The time interval during which a nucleus has a 50% probability of decaying is its half-life. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 2:59 PM 20. If one waits for a time equal to two half-lives for a certain radioactive material, all of it originally

present will have decayed completely. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:03 PM 21. The half-life of uranium-232 is 70 years. The time for 3/4 of a sample of uranium-232 to decay is 105 years. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 2:59 PM 22. A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.

The count rate 24 minutes later is 1,000 counts per minute. The half-life of the radioisotope is 8 minutes. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE MODIFIED: 6/15/2016 3:00 PM 23. Fusion of hydrogen nuclei is the origin of solar energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 24. Fusion is used to produce the largest nuclei known to exist. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 25. Fission fragments are always identical. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 26. Carbon-14 dating can be used to find the age of material up to millions of years old. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 27. The hydrogen in the universe was formed by the energy of the Big Bang. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 28. The half-life indicates how tightly the nucleons in a nucleus are bound together. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:00 PM 29. The splitting of a large nucleus into two smaller nuclei upon absorbing a neutron is nuclear fusion. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 30. The combining of two nuclei to form a larger nucleus with the release of energy is nuclear fusion. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 31. Atomic bombs and nuclear power plants both use nuclear fusion. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 32. Both nuclear reactors and atomic bombs use nuclear chain reactions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 33. Nuclear fusion is the source of energy in stars. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 34. The determination of the composition of a material by bombarding it with neutrons and monitoring the

emitted radiation is neutron activation analysis. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 35. Gamma radiation is used to kill harmful bacteria in food. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics 36. The product of a radioactive decay is called the “daughter.” a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 37. When uranium-238 (Z = 92) is bombarded with a neutron, it can change into uranium-237. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 38. The mass of an atom of carbon-12 (Z = 6) is less than the mass of 6 protons and 6 neutrons because of

binding energy. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 39. Magnetic confinement is used in controlled fusion experiments to control a plasma. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 40. A nuclear reactor could explode like an atomic bomb. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 41. The energy of nuclear radiation as it is absorbed mostly goes to heat the material. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 42. After three half-lives, 3/4 of the nuclei in a sample of a radioisotope have decayed a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 43. Einstein’s equation E = mc2 states that when a particle loses energy, the result is an increase in mass of the particle. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 12:58 PM 44. An alpha particle is like

with 2 protons and 2 neutrons, whereas a beta particle is equivalent

to hydrogen. a. True b. False ANSWER: POINTS:

False 1

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Chapter 11: Nuclear Physics QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 45. What’s an isotope? a. a radioactive material b. an atom of an element with a different number of neutrons in the nucleus c. an electrically charged atom d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 46. The number of protons in a nucleus is the a. mass number. b. neutron number. c. atomic number. d. isotope number. e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:35 AM 47. Two isotopes have the same a. mass number. b. neutron number. c. atomic number. d. quantum number. e. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:36 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics 48. How big is the nucleus of an atom? a. about 1% of the volume of the whole atom b. about a millionth of the volume of the whole atom c. about a billionth of the volume of the whole atom d. about a trillionth of the volume of the whole atom ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 49. What holds the nucleus together? a. electrical forces between the protons b. alpha particles c. beta particles d. strong forces ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 50. The expression(s) indicating the atomic number of a nucleus is a. A. b. N. c. Z. d. Z + N. e. A – Z. ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:37 AM 51. The expression(s) indicating the number of protons in a nucleus is a. A. b. N. c. Z. d. Z + N. Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics e. A – Z. ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:38 AM 52. What does the 235 represent in uranium-235? a. the mass number b. the atomic number c. the neutron number

d. none of the above

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 53. If someone tells you they have a sample of niobium-90, can you tell how many neutrons are in the nucleus? a. Yes, there are 41 neutrons. b. Yes, there are 90 neutrons. c. Yes, there are 49 neutrons. d. No, more information must be given. e. No, there is no such thing as “niobium.”

ANSWER: c RATIONALE: You do need to look up the atomic number of niobium in the periodic table.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 54. What is ? a. There is no such thing. b. an isotope of carbon with 7 neutrons and 12 protons c. an isotope of carbon with 7 neutrons and 5 protons d. an isotope of carbon with 5 neutrons and 7 protons ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE MODIFIED: 6/13/2016 10:33 AM 55. An alpha particle is another name for a(n) a. electron. b. proton. c. neutron. d. helium nucleus. e. photon.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:38 AM 56. A beta particle is another name for a(n) a. electron. b. proton. c. neutron. d. helium nucleus. e. photon.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:39 AM 57. How can an electron be ejected from a nucleus in beta decay if it wasn’t in the nucleus to begin with? a. The electron doesn’t come from the nucleus—it comes from an orbit circling the nucleus. b. A neutron in the nucleus turns into a proton, electron, and a neutrino. c. A proton in the nucleus turns into a neutron, electron, and a neutrino. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 58. A gamma ray is another name for a(n) a. electron. b. proton.

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Chapter 11: Nuclear Physics c. neutron. d. helium nucleus. e. photon.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:40 AM 59. If a substance is radioactive it is definitely a. dangerous. b. emitting alpha particles. c. glowing. d. useful. e. all of the above. f. none of the above.

ANSWER: f RATIONALE: Some choices are possible in certain cases but not in all cases.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:41 AM 60. Low levels of ionizing radiation a. are dangerous to the human body. b. can be tolerated by the human body. c. are beneficial to the human body. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:41 AM 61. Why is nuclear reactor waste radioactive? a. Radiation from the reactor makes everything in or near it radioactive. b. Used fuel rods contain fission fragments which are radioactive. c. Spent fuel rods pick up contamination from the reactor. d. all of the above Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 62. What does the moderator do in a nuclear reactor? a. It is a safety feature that limits the nuclear reaction. b. It absorbs neutrons. c. It slows down neutrons. d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 63. Why is there a radioactive source in a smoke detector? a. It makes the smoke particles radioactive. b. It ionizes the air. c. It powers the alarm when the battery wears out. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 64. When radium-223 (Z = 88) decays to radon-119 (Z = 86), the other particle emitted is a. an alpha particle. b. a beta particle. c. a gamma ray. d. an x-ray. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:06 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics 65. When sulfur-35 (Z = 16) decays to chlorine-35 (Z = 17), a particle emitted is a. an alpha particle. b. a beta particle. c. a gamma ray. d. an x-ray. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:43 AM 66. What’s a decay chain? a. a nuclear chain reaction b. one radioisotope decaying into another, which decays into another, and so on c. the triggering of multiple fissions by a single neutron d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 67. When a neutron decays to create a proton, another particle emitted is a. an alpha particle. b. a beta particle. c. a gamma ray. d. an x-ray. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:44 AM 68. When a nucleus in an excited state decays to the ground state, the particle emitted is a. an alpha particle. b. a beta particle. c. a gamma ray.

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Chapter 11: Nuclear Physics d. an x-ray. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:45 AM 69. The time interval during which a nucleus has a 50% probability of decaying is its a. half-life. b. decay time. c. nuclei activation time. d. binding energy time. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:46 AM 70. The half-life of uranium-232 is 70 years. The time for 3/4 of a sample of uranium-232 to decay is a. 35 years. b. 70 years. c. 125 years. d. 140 years. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:46 AM 71. A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.

The count rate 24 minutes later is 1,000 counts per minute. The half-life of the radioisotope is a. 3 minutes. b. 4 minutes. c. 6 minutes. d. 8 minutes. e. 12 minutes.

ANSWER:

d

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Chapter 11: Nuclear Physics POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:52 AM 72. Carbon-14 dating can be used to find the age of material up to a. millions b. billions c. hundreds of thousands

of years old.

d. tens of thousands

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 73. The hydrogen in the universe was formed by a. the energy of the Big Bang. b. nuclear fusion reactions in stars. c. radioactive decay of heavy elements. d. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:53 AM 74. Which of the following is not a method of producing nuclear fusion? a. heating a magnetically confined plasma b. forcing nuclei together using lasers c. cooling nuclei to very cold temperatures d. forcing nuclei together with a nuclear fission explosion ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 75. What do you do to the control rods of a reactor in order to shut it down? a. push them into the core b. pull them out of the core c. nothing—it’s the cooling water that shuts down the reactor d. none of the above Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 76. How tightly the nucleons in a nucleus are bound together is indicated by the nucleus’s a. atomic number. b. mass number. c. neutron number. d. half-life. e. binding energy.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:53 AM 77. The splitting of a large nucleus into two smaller nuclei upon absorbing a neutron is a. nuclear fission. b. nuclear fusion. c. neutron activation. d. nuclear emission. e. beta decay.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:54 AM 78. The combining of two nuclei to form a larger nucleus with the release of energy is a. nuclear fission. b. nuclear fusion. c. neutron activation. d. nuclear emission. e. beta decay.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:54 AM 79. Which of the following is not the usual outcome of nuclear fission? a. The binding energy per nucleon of the fission fragments is smaller than that of the original nucleus. b. Energy is released. c. Neutrons are released. d. The fission fragments are radioactive.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 80. What do “kiloton” and “megaton” refer to? a. explosive yields of nuclear weapons b. kiloton means 1000 tons of TNT c. megaton means one million tons of TNT d. all of the above ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 81. The determination of the composition of a material by bombarding it with neutrons and monitoring the

emitted radiation is a. nuclear fission analysis. b. nuclear fusion analysis. c. neutron activation analysis. d. nuclear emission analysis. e. beta decay analysis.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:55 AM 82. When uranium-238 (Z = 92) is bombarded with a neutron, it can change into a. uranium-237.

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Chapter 11: Nuclear Physics b. uranium-239. c. protactinium-239 (Z = 91). d. neptunium-239 (Z = 93). e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:55 AM 83. The mass of an atom of carbon-12 (Z = 6) is less than the mass of 6 protons and 6 neutrons because of a. nuclear fission. b. nuclear fusion. c. neutron activation. d. nuclear emission. e. binding energy.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:56 AM 84. Magnetic confinement is used in controlled fusion experiments to a. provide neutrons. b. accelerate nuclei. c. control a plasma. d. excite nuclei into higher energy levels. e. inject energy into nuclei.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:56 AM 85. Radioactive decay is involved in a. irradiating food to destroy harmful bacteria. b. keeping the interior of the Earth hot. c. making smoke detectors work. d. finding flaws in jet engine parts.

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Chapter 11: Nuclear Physics e. all of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:57 AM 86. If one half-life for an isotope is 25,000 years, then 10 half-lives would be a. 2,500 b. 25,000 c. 125,000 d. 250,000 ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:02 PM

years.

87. The type of nuclear reaction taking place in stars is a. cold fusion. b. fusion. c. fission. d. beta decay.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:57 AM 88. The nucleus of an atom is composed of protons and neutron held together by the a. binding energy. b. strong nuclear force. c. fusion. d. fission.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:58 AM 89. .Hydrogen bombs get most of their energy from a. the fission of hydrogen. b. the fusion of hydrogen. c. strong nuclear energy. d. nuclear binding energy.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:58 AM 90. How do isotopes of a given element differ? a. They have different mass numbers. b. They have different neutron numbers. c. They have different atomic numbers. d. They have different quantum numbers. e. none of the above ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 91. The expression(s) indicating the mass number of a nucleus is a. A. b. N. c. Z. d. Z + N. e. A – Z. ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 2:59 AM 92. The expression(s) indicating the number of nucleons in a nucleus is a. A. b. N. c. Z. d. Z + N. e. A – Z. ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:00 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics 93. The expression(s) indicating the number of neutrons in a nucleus is a. A. b. N. c. Z. d. Z + N. e. A – Z. ANSWER: b, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:00 AM 94. A magnetic field will deflect a. an alpha particle. b. a beta particle. c. a gamma ray. d. an x-ray. e. all of the above.

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:01 AM 95. What sorts of materials serve as moderators in nuclear reactors? a. water b. boron c. graphite d. concrete ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 96. What isotopes are used as nuclear reactor fuel? a. uranium-235 b. uranium-238 c. plutonium-239

d. deuterium

ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 97. Why use nuclear power on a satellite? a. It can supply energy for many years on long space missions. b. Solar cells don’t work well in the outer solar system far from the Sun. c. Sending radioactive materials into space is a good way to get rid of them so they don’t create

a hazard on Earth. d. all of the above ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:05 PM 98. Which of these is/are not true of nuclear fission reactors? a. Their intended output is heat. b. They produce the majority of the electric energy used in the world. c. There is a small chance one could explode like an atom bomb. d. Some can produce or “breed” more nuclear fuel than they consume.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 99. Fission is used

in a. atomic bombs. b. power plants. c. energy for stars. d. hydrogen bombs. e. a tokamak reactor.

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:02 AM 100. Fusion is used Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics in

a. atomic bombs.

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Chapter 11: Nuclear Physics b. power plants. c. energy for stars. d. hydrogen bombs. e. a tokamak reactor.

ANSWER: c, d, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:03 AM 101. Cold fusion has a. solved the world’s energy crisis. b. been used to create superheavy elements. c. been achieved using muons. d. rendered nuclear reactors obsolete.

ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:03 AM 102. Of the thousands of different isotopes known to exist, a. most of them are radioactive. b. only a couple can be used to build an atom bomb. c. some are used in medical diagnosis and treatment. d. most occur naturally. e. all of the above ANSWER: a, b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/14/2016 3:04 AM 103. Fuel rods in a nuclear reactor contain only about 3% uranium-235 and the remainder is mostly uranium-238. As the uranium-238 absorbs a neutron during reactions, it becomes , which undergoes two beta decays to become . a. uranium-239 b. uranium-237 c. plutonium-239 d. plutonium-238 ANSWER: a, c POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:06 PM 104. The number of protons in a nucleus is the ANSWER: atomic POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 105. Two isotopes have the same ANSWER: atomic POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

number.

number.

106. The symbol indicating the atomic number of a nucleus is ANSWER: Z POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

107. The symbol indicating the number of protons in a nucleus is ANSWER: Z

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 108. The symbol indicating the mass number of a nucleus is ANSWER: A

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics 109. The symbol indicating the number of nucleons in a nucleus is ANSWER: A POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

110. The symbol indicating the number of neutrons in a nucleus is ANSWER: N

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 111. An alpha particle is another name for a(n) ANSWER: helium nucleus POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

112. A beta particle is another name for a(n) ANSWER: electron POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 113. A gamma ray is another name for a(n) ANSWER: photon

.

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 114. Nuclear radiation can be detected by using a ANSWER: Geiger counter POINTS:

.

1

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Chapter 11: Nuclear Physics QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 115. Of the three types of nuclear decay, only ANSWER: gamma decay POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

does not affect the atomic number of the nucleus.

116. Two particles that will be deflected by a magnetic field are ANSWER: alpha, beta POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

and

.

117. When radium-223 (Z = 88) decays to radon-119 (Z = 86), the other particle emitted is a(n) ANSWER: alpha particle POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 118. When sulfur-35 (Z = 16) decays to chlorine-35 (Z = 17), a(n) ANSWER: beta particle

.

is emitted.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 119. When a neutron decays to a proton, a(n) ANSWER: beta particle

particle is emitted.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics 120. When a nucleus in an excited state decays to the ground state, a(n) ANSWER: gamma ray POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

particle is emitted.

121. The time interval during which a nucleus has a 50% probability of decaying is its ANSWER: half-life

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:02 PM 122. The half-life of uranium-232 is 70 years. The time for 3/4 of a sample of uranium-232 to decay is

.

ANSWER: 140 years POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:02 PM 123. A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.

The count rate 24 minutes later is 1,000 counts per minute. The half-life of the radioisotope is ANSWER: 8 minutes

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:03 PM 124. The Cassini space probes used electricity provided by ANSWER: radioisotope thermoelectric generators

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:06 PM 125. Stars are powered by

.

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Chapter 11: Nuclear Physics ANSWER:

nuclear fusion

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 126. If a piece of wood is suspected to be several thousand years old, its true age can likely be determined

through use of the isotope ANSWER: carbon-14

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 127. How tightly the nucleons in a nucleus are bound together is indicated by the nucleus’s ANSWER: binding energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

.

128. The splitting of a large nucleus into two smaller nuclei upon absorbing a neutron is ANSWER: nuclear fission POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 129. The combining of two nuclei to form a larger nucleus with the release of energy is ANSWER: nuclear fusion POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 130. Two things that exploit fission are and ANSWER: atomic bombs, nuclear power plants

.

.

.

POINTS: 1 QUESTION TYPE: Completion Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 131. In a nuclear reactor,

are used to limit the number of neutrons passing from one fuel

rod to another. control rods

ANSWER:

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 132. Two areas in which fusion is the source of energy are ANSWER: stars, hydrogen bombs, tokamak reactors

and

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 133. The determination of the composition of a material by bombarding it with neutrons and monitoring the

emitted radiation is .

ANSWER: neutron activation analysis POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 134. When uranium-238 (Z = 92) is bombarded with a neutron, it can change into ANSWER: uranium-239

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 135. The mass of an atom of carbon-12 (Z = 6) is less than the mass of 6 protons and 6 neutrons because of

.

ANSWER:

binding energy

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 136. Isotopes of a given element have the same number of ANSWER: protons POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

in the nucleus.

137. In a smoke detector, current flows between the plates because the radiation ANSWER: ionizes POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 138. An important factor in producing and controlling a fission chain reaction is the fact that are much better a causing fission in uranium-235.

ANSWER: slow POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

the air.

neutrons

139. A nucleus of radium-223 undergoes alpha decay. (a) Write the reaction equation and (b) determine

the identity of the daughter nucleus.

ANSWER: (a) 22388Ra → 11986Rn + 42 He, (b) radon POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:14 PM 140. A nucleus of sulfur-35 undergoes beta decay. Write the reaction equation and determine the identity of the

daughter nucleus.

ANSWER:

(a) 3516S → 3517 Cl + 0 −

1

e

, (b) chlorine

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics DATE CREATED:

6/13/2016 10:33 AM

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Chapter 11: Nuclear Physics DATE MODIFIED: 6/15/2016 3:14 PM 141. A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.

The count rate 24 minutes later is 1,000 counts per minute. What is the half-life of the radioisotope?

ANSWER: 8 minutes POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 142. Lithium, Li-7, contains three protons and four neutrons and has a mass of 7.01600 u. What is the mass defect for this nucleus in atomic mass units?

ANSWER: 0.04066 u POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM

Match each item with the correct statement below. a. alpha particle b. atomic bomb c. atomic mass number d. atomic number e. beta particle f. binding energy g. half-life h. hydrogen bomb i. neutron activation analysis j. neutron number k. nuclear fission l. nuclear fusion m. tokamak QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 3:07 PM DATE MODIFIED: 6/15/2016 3:13 PM 143. exploits nuclear fusion ANSWER: h POINTS: 1 144. the number of protons in a nucleus Copyright Cengage Learning. Powered by Cognero.

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Chapter 11: Nuclear Physics ANSWER: d POINTS: 1 145. time interval during which a nucleus has a 50% probability of decaying ANSWER: g POINTS: 1 146. the total number of nucleons in a nucleus ANSWER: c POINTS: 1 147. the splitting of a large nucleus into two smaller nuclei ANSWER: k POINTS: 1 148. the same as a helium-4 nucleus ANSWER: a POINTS: 1 149. indicates how tightly bound together a nucleus is ANSWER: f POINTS: 1 150. involves inducing radioactivity artificially ANSWER: i POINTS: 1 151. one design for a controlled fusion reactor ANSWER: m POINTS: 1 152. this particle is simply an electron ejected from a nucleus ANSWER: e POINTS: 1

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Chapter 12: Special Relativity and Elementary Particles 1. Special relativity predicts that moving clocks run slow. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 2. Special relativity predicts that the length of a moving object will be elongated in the direction of motion. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 3. Einstein’s famous equation E = mc2 is a statement of the equivalence of energy and the square of the speed of

light. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:21 PM 4. Because of the equivalence of mass and energy, an electron and a positron, which are two massive

particles, can annihilate when they come together to produce two photons, which have no mass. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 5. Because of the equivalence of energy and mass, a gamma ray, which is a high energy photon, can

“disappear,” and in its place there will be produced an electron and a positron, which both have mass.

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Chapter 12: Special Relativity and Elementary Particles a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 6. Since the rest energy of an electron and its antiparticle a positron is 0.511 MeV, a gamma ray must have

an energy larger than 1.022 MeV to produce an electron-positron pair. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 7. According to special relativity, at speeds approaching the speed of light, the kinetic energy of a moving object

is not equal to 1/2 mv2. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 8. Because of their short lifetimes, very few muons that are produced in the upper atmosphere at high speeds

should be observed at the surface of the Earth. Yet we detect large numbers of muons at ground level because of the Pauli exclusion principle. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:15 PM 9. Because of time dilation, if a twin goes on a trip in a high-speed rocket ship, when she returns home she will Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles be younger than her twin sister who did not go on the trip. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/15/2016 3:22 PM 10. If a 1-kg mass is completely converted into energy, the amount of energy released would be 9 × 1016 J. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 1:00 PM 11. The speed of light is a relativistically invariant quantity. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 12. The four fundamental forces in nature are the strong, weak, electromagnetic, and gravitational interactions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 13. Short range interactions generally have carrier particles of greater mass than those for long

range interactions. a. True Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 14. A fermion has integral spin. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 15. A boson has half-integral spin. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 7/12/2016 1:57 PM 16. Any particle with spin obeys the Pauli exclusion principle. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:33 AM DATE MODIFIED: 6/13/2016 10:33 AM 17. Hadrons are particles that interact via the strong force. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 18. A lepton interacts via the strong interaction. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 19. Leptons are built out of quarks. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 20. Bosons are force-carrying particles. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 21. A photon is a boson. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles 22. Every particle has a corresponding antiparticle. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 23. Some antiparticles are identical to the particles they correspond to. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 24. Baryon number is conserved in all interactions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 25. Strangeness is conserved observed in strong and electromagnetic interactions, but not in weak interactions. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 26. The strong force depends upon the electric charge of the particles involved. a. True b. False ANSWER: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 27. Electroweak theory results in models for combining the electromagnetic, weak and strong nuclear

interactions into a single basic force. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 28. Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel Prize in physics for their

development of GUTs. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:18 PM 29. Leptons are the fundamental particles that are the building blocks of hadrons. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 30. Quarks are held together by the color force. Electrons are made of quarks. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:19 PM 31. All quarks have 1/3 the electric charge of an electron. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 32. Charm, beauty, and truth are three quantum numbers for quarks. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 33. The quark structure of the proton is uud. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 34. The quark structure of the neutron is udd. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles 35. There are three flavors of quarks. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 36. The color force between quarks is carried by mesons. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 37. The color force is carried by gluons but gluons do not have color charge themselves. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 38. The quark and antiquark in a meson are always of the same flavor. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 39. According to the standard model of elementary particle physics, there are six flavors of quarks, each of

which comes in three colors. a. True b. False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 40. Recent experiments suggest that the lifetime of the proton is over 1033 years, more than what is predicted by

the simplest grand unified theories. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 41. All neutrinos are left handed. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 42. An elementary particle has a measurable size. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:19 PM 43. The spin of elementary particles is quantized. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 44. In a particle reaction, the number of baryons going into the reaction must equal the number emerging from the reaction. a. True b. False ANSWER: True POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:20 PM 45. Mesons are composed of three-quark combinations. a. True b. False ANSWER: False POINTS: 1 QUESTION TYPE: True / False HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 46. What is meant by neutrino oscillations? a. oscillating movement of neutrinos b. one neutrino type (e.g., muon neutrinos) changing into another (e.g., tau neutrinos) c. random changes in mass of neutrinos d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 47. What is the symbol for a neutrino? a. n b. c.

d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 48. If you are driving down a highway at 65 mph with your headlights on, the speed of the light emitted from

your headlights as seen by a person standing on the side of the road is a. c. b. c + 65 mph. c. slightly greater than c. d. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:08 AM 49. Two observers, A and B, move relative to each other. A claims B’s clocks run slow. In this case, B will

claim A’s clocks a. run fast. c. are no good.

b. run slow, too. d. none of the above

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:08 AM 50. The prediction of special relativity that moving clocks run slow is a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:09 AM 51. The prediction from special relativity that the length of a moving object will be shortened in the direction of

motion is a. time dilation.

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Chapter 12: Special Relativity and Elementary Particles b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:09 AM 52. Einstein’s famous equation E = mc2 is a statement of a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:10 AM 53. What is the mass of an electron in MeV/c2? a 0.511 MeV/c2 b 105.7 MeV/c2 c. 1777 MeV/c2 d. none of the above ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 54. An electron and a positron, which are two massive particles, can annihilate when they come together to

produce two photons, which have no mass. This pair annihilation is an example of a. time dilation. b. length contraction. c. the equivalence of mass and energy.

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Chapter 12: Special Relativity and Elementary Particles d. the principle of relativity. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:10 AM 55. What is different between a particle and its antiparticle? a. opposite electric charge b. opposite strangeness c. opposite charm d. all of the above ANSWER: RATIONALE:

d

There are more possible “opposites” as well.

POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 56. When a particle and antiparticle meet, they are said to annihilate each other. What does this mean? a. They explode into tiny fragments. b. They are destroyed, and turned into an equivalent amount of energy. c. They merge and simply disappear. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 57. The notation used to represent an antiparticle is a. the particle symbol with a bar over it. b. e+, in the case of the positron. c. μ+, in the case of the antimuon.

d. all of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles DATE MODIFIED: 7/14/2016 3:11 AM 58. When it comes near a heavy nucleus, a gamma ray, which is a high energy photon, can “disappear,” and

in its place there will be produced an electron and a positron, which both have mass. This pair production is an example of a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:12 AM 59. What is the symbol for a photon? a. n b. c.

d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 60. The rest energy of an electron and its antiparticle, a positron, is 0.511 MeV. In order to produce an

electron- positron pair, a gamma ray must have an energy larger than 1.022 MeV because of a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:13 AM 61. If you do an experiment on Earth, and then do an identical experiment in a jet plane moving uniformly at a

high speed, you get identical results from both experiments. This is an example of Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:14 AM 62. At speeds approaching the speed of light, the kinetic energy of a moving object is equal to a. 1/2 mv2. b. 1/2 mc2. c.

. d.

. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:15 AM 63. Because of their short lifetimes, very few muons that are produced in the upper atmosphere at high speeds

should be observed at the surface of the Earth. Yet we detect large numbers of muons at ground level because of a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:16 AM 64. From the point of view of an observer on the Earth, a muon produced high in the atmosphere can reach the Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles ground before decaying because a. relativity gives it extra time to get there. b. of the uncertainty principle. c. it is a short distance to the ground. d. relativity shortens the distance to the ground.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:16 AM 65. From the point of view of a muon produced high in the atmosphere, the reason it can get to the ground

before it decays is because a. relativity gives it extra time to get there. b. of the uncertainty principle. c. it is a short distance to the ground. d. relativity shortens the distance to the ground.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:17 AM 66. If a twin goes on a trip in a high-speed rocket ship, when she returns home she will be younger than her twin

sister who did not go on the trip because of a. time dilation. b. length contraction. c. the equivalence of mass and energy. d. the principle of relativity. e. none of the above.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:17 AM 67. If a 1-kg mass is completely converted into energy, the amount of energy released would be a. 0.333 J. b. 1 J. c. 3 × 108 J. Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles d. 9 × 1016 J. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:18 AM 68. A fundamental force in nature is the a. strong interaction. b. weak interaction. c. electromagnetic interaction. d. gravitational interaction. e. all of the above ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:18 AM 69. A particle with an integral spin is a a. boson. b. lepton. c. fermion. d. hadron. e. muon.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:19 AM 70. A particle with a half-integral spin is a a. boson. b. lepton. c. fermion. d. hadron. e. muon.

ANSWER:

c

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Chapter 12: Special Relativity and Elementary Particles POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:19 AM 71. A particle with a. zero rest mass

obeys the Pauli exclusion principle.

b. very high energy c. half-integral spin d. integral spin e. charm ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/12/2016 1:58 PM 72. “Half-integral spin” means spin a. 1/2. b. 1/2, 1, 3/2, 2, ... c. 1/2, 3/2, 5/2, .......... d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:20 AM 73. Electrons are “spin one-half,” photons are a. also spin one-half. b. spin zero. c. spin one.

d. none of the above.

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:20 AM 74. What is the quark structure of a proton? a. uud b. udd c. uuu Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles d. ddd e. the question does not make sense ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 75. What’s the quark structure of an antiproton? a. ddu b. bbt c.

d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/12/2016 1:51 PM 76. What is the quark structure of a neutron? a. uud b. udd c. uuu d. ddd e. the question does not make sense ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 77. What is the quark structure of an electron? a. uud b. udd c. uuu d. ddd e. the question does not make sense ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 78. How many quark flavors are there? a. 1 b. 3 c. 6

d. none of the above

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 79. How many quark colors are there? a. 1 b. 3 c. 6 d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 80. The color force between quarks is carried by a. mesons. b. the strong force. c. leptons. d. gluons. e. none of the above.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:21 AM 81. Gluons a. are carriers of the color force. b. possess color charge. c. can interact with each other via the color force. d. can form glueballs. e. all of the above ANSWER:

e

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Chapter 12: Special Relativity and Elementary Particles POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:22 AM 82. The top quark a. is the only quark not yet detected experimentally. b. has been shown not to exist. c. was discovered at Fermilab. d. none of the above ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:23 AM 83. A spin 1/2 particle that does not interact via the strong interaction is a(n) a. lepton. b. baryon. c. meson. d. intermediate (or gauge) boson. e. hadron.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:23 AM 84. Why do strange particles have long lifetimes compared to other strongly interacting particles? a. No one knows—this is why they are called “strange.” b. They only decay via the weak interaction. c. They are more massive. d. none of the above ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles 85. A force-carrying particle is a(n) a. lepton. b. baryon. c. meson. d. intermediate (or gauge) boson. e. hadron.

ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:24 AM 86. Conservation of a. baryon number

is observed in all interactions.

b. lepton number c. strangeness d. charm e. beauty ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 87. Conservation of

is observed in strong and electromagnetic interactions but not in

weak interactions. a. baryon number b. lepton number c. strangeness d. charm e. beauty ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 88. A model for combining the electromagnetic, weak and strong nuclear interactions into a single basic force

is a(n) a. electroweak theory.

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Chapter 12: Special Relativity and Elementary Particles b. GUT. c. quark theory. d. generalized theory of relativity. e. theory of strangeness.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:25 AM 89. Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel Prize in physics for their

development of a(n) a. electroweak theory. b. GUT. c. quark theory. d. generalized theory of relativity. e. theory of strangeness.

ANSWER: a POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:25 AM 90. The fundamental particles that are the building blocks of hadrons are a. leptons. b. baryons. c. mesons. d. intermediate (or gauge) bosons. e. quarks.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:26 AM 91. Quarks are bound together in hadrons by a. the strong force. b. the weak force. c. intermediate (or gauge) bosons.

ANSWER: d POINTS: 1 Copyright Cengage Learning. Powered by Cognero.

d. the color force.

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Chapter 12: Special Relativity and Elementary Particles QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:27 AM 92. A quantum number for a quark is a. strangeness. b. beauty. c. charm. d. truth. e. all of the above.

ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:27 AM 93. Which of the following is not a fundamental force of nature? a. strong nuclear force b. electroweak force c. weak nuclear force d. electromagnetic interaction ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:28 AM 94. The spins of all known particles are either integral or half-integral multiples of a. the baryon number. b. Plank’s constant. c. the Gravitational constant. d. the speed of light.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:28 AM 95. Which of the following particle is unaffected by the strong force? a. protons b. neutrons c. mesons d. gauge bosons ANSWER: d POINTS: 1 QUESTION TYPE: Multiple Choice Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:24 PM 96. Mesons are composed of a. antiquarks. b. quark-antiquark pairs. c. quarks. d. three-quark combinations.

ANSWER: b POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:29 AM 97. Which of the following is considered anitmatter? a. u b. e– c. e+

d. d

ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 2:01 PM 98. Which of the following are not relativistically invariant quantities? a. the speed of light, c b. time c. mass d. energy ANSWER: b, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 99. The positron a. is an antielectron. b. was the first antimatter particle discovered. c. is the same as a proton. d. all of the above ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:29 AM 100. Quarks come in what flavors? a. up, down and strange b. charm, top and bottom c. red, green and blue

d. all of the above

ANSWER: a, b POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 101. A particle that interacts via the strong force is a(n) a. lepton. b. baryon. c. meson. d. intermediate (or gauge) boson. e. hadron.

ANSWER: b, c, e POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:30 AM 102. In interactions taking place by the strong force, which of the following quantities are conserved? a. electric charge b. baryon number c. mass-energy d. strangeness e. linear momentum f. angular momentum (spin) ANSWER: a, b, c, d, e, f POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 103. In interactions taking place by the weak force, which of the following quantities are conserved? a. electric charge b. baryon number Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles c. mass-energy d. strangeness e. linear momentum f. angular momentum (spin) ANSWER: a, b, c, e, f POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 104. The electron a. is an absolutely stable particle. c. has zero mass.

b. decays via the weak interaction. d. is a lepton.

ANSWER: a, d POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:30 AM 105. Quarks have electric charges of magnitude a. e. b. 1/3 e. c. 2/3 e. d. 0. e. none of the above ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:31 AM 106. t and b quarks are named a. truth and beauty. b. up and down. c. top and bottom. d. Itchy and Scratchy. e. none of the above.

ANSWER: a, c POINTS: 1 QUESTION TYPE: Multiple Response Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/14/2016 3:31 AM 107. Particles possessing half-integral spins are called a. quarks b. fermions c. bosons d. antiquarks ANSWER: b, c POINTS: 1 QUESTION TYPE: Multiple Response HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 108.

ANSWER:

and particles with integral spins are called

.

is the prediction of special relativity that moving clocks run slow.

Time dilation

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 109. The prediction from special relativity that the length of a moving object will be shortened in the direction

of motion is called

.

ANSWER: length contraction POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 110. Einstein’s famous equation E = mc2 is a statement of ANSWER: the equivalence of mass and energy

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:20 PM 111. An electron and a positron, which are two massive particles, can annihilate when they come together to

produce two photons, which have no mass. According to special relativity, this pair annihilation is an example of .

ANSWER: the equivalence of mass and energy POINTS:

1

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Chapter 12: Special Relativity and Elementary Particles QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 112. When it comes near a heavy nucleus, a gamma ray, which is a high energy photon, can “disappear,” and

in its place there will be produced an electron and a positron, which both have mass. According to special relativity, this pair production is an example of .

ANSWER: the equivalence of mass and energy POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 113. The mass of an electron and its antiparticle, a positron, is 0.511 MeV/c2. In order to produce an

electron- positron pair, a gamma ray must have an energy larger than 1.022 MeV because ANSWER: of the equivalence of mass and energy

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 114. If you do an experiment on Earth, and then do an identical experiment in a jet plane moving uniformly at a

high speed, you get identical results from both experiments. This is an example of ANSWER: the principle of relativity

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:17 PM 115. According to special relativity the ANSWER:

of a moving object is equal to

.

kinetic energy

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 116. Since the mass of an object is the same for all observers, it is a relativistically ANSWER: invariant Copyright Cengage Learning. Powered by Cognero.

quantity.

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Chapter 12: Special Relativity and Elementary Particles POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 117. Because of their short lifetimes, very few muons that are produced in the upper atmosphere at high speeds

should be observed at the surface of the Earth. Yet we detect large numbers of muons at ground level because of the special relativistic effect of .

ANSWER: time dilation POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:18 PM 118. If a twin goes on a trip in a high-speed rocket ship, when she returns home she will be younger than her

twin sister who did not go on the trip because of the special relativistic effect of ANSWER: time dilation

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:23 PM 119. If a 1 kg mass is completely converted into energy, the amount of energy released would be ANSWER: 9 × 1016 J

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 120. The four fundamental forces in nature are the , , , and ANSWER: strong interaction, weak interaction, electromagnetic interaction, gravitational

interaction POINTS:

.

1

QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 121. A ANSWER:

has integral spin. boson

POINTS:

1

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Chapter 12: Special Relativity and Elementary Particles QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 122. A has half-integral spin.

ANSWER: fermion POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/12/2016 1:58 PM 123. A particle with obeys the Pauli exclusion principle.

ANSWER: half-integral spin POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/12/2016 1:59 PM 124. is the collective name given for particles that interact via the strong force.

ANSWER: Hadron POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 125. A ANSWER:

does not interact via the strong interaction. lepton

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 126. The are force-carrying particles.

ANSWER: intermediate (or gauge) bosons POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles 127. In all interactions number is conserved.

ANSWER: baryon POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 128. Conservation of

is observed in strong and electromagnetic interactions, but not in

weak interactions.

ANSWER:

strangeness

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 129. Models for combining the electromagnetic, weak and strong nuclear interactions into a single basic

force are

.

GUTs

ANSWER: POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 130. Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel Prize in physics for their

development of ANSWER:

. electroweak theory

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:25 PM 131. According to the Weinberg-Salam model, the massless carriers of the electroweak interaction acquire

mass in the process of .

ANSWER: spontaneous symmetry breaking POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles 132. The fundamental particles that are the building blocks of hadrons are ANSWER: quarks

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 133. Quarks, originally isolated in cosmic ray showers, are elementary particles possessing electric charge

equal to 1/3 or 2/3 the magnitude of the charge of a proton.

ANSWER: False (Quarks have never been isolated.)

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 134. The ANSWER:

binds quarks together. color force

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 135. The six quantum numbers for quarks are

, and

, , . up, down, strange, charm, bottom (beauty), top (truth)

,

,

ANSWER: POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 136. The ANSWER:

interaction alone can change one type of quark into another. weak

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 137. The quark structure of the proton is ANSWER: uud Copyright Cengage Learning. Powered by Cognero.

.

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Chapter 12: Special Relativity and Elementary Particles POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 138. The quark structure of the neutron is ANSWER: udd

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 139. The color force between quarks is carried by ANSWER: gluons

.

POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 140. A interacts via the strong interaction.

ANSWER: baryon POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 141. If the electron is a lepton, then the antilepton is a(n) ANSWER: positron POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 142. It takes approximately kilometers from the Sun to Earth.

ANSWER: 500 POINTS: 1 QUESTION TYPE: Completion HAS VARIABLES: False

.

seconds for a particle moving at the speed of light to travel the 150 million

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Chapter 12: Special Relativity and Elementary Particles DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 143. The lifetime of a free neutron is 887 s. If a neutron moves with a speed 2.9 × 108 m/s relative to an

observer in the lab, what does the observer measure the neutron’s lifetime to be?

ANSWER: 3,464 s POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 144. (a) What is the rest energy (in joules) of a subatomic particle whose (rest) mass is 6.7 × 10−31 kg? (b) How many MeV’s of energy is this?

ANSWER: (a) 6.03 × 10−14 J, (b) 0.377 MeV POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/15/2016 3:31 PM 145. The rest energy of a particular subatomic particle is 1200 MeV. If this particle is traveling at 90% the

speed of light, what is its total relativistic energy?

ANSWER: 2753 MeV POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 146. Indicate the validity of the following decay processes. For any reactions which are not valid (that is, not

permitted), give a reason. (a) Σ0 —> Λ0 + π0 (b) π− —> μ− + νμ (c) Κ0 —> π0 + π0 + π+ ANSWER: not valid because ΔS = 1, valid, not valid because ΔQ = 1 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/12/2016 1:54 PM 147. Use the conservation laws to identify the missing particle in each of the following reactions.

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Chapter 12: Special Relativity and Elementary Particles (a) Κ− + p —> Σ+ +

.

(b) Κ+ —> νμ +

.

(c) p + p —> p + π+ + ANSWER:

. −

+

(a) π , (b) μ , (c) n

POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 148. What is the quark composition of the strange Κ+ meson?

ANSWER: POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 149. What is the quark composition of the Δ++? It has no strangeness, no charm, and no top-ness or

bottom- ness. Its spin is 3/2.

ANSWER: uuu POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 150. If the average lifetime of a proton was 1033 years, about how many protons would you have to assemble

together and observe simultaneously in order to witness a total of 100 proton decays in one year?

ANSWER: 1035 POINTS: 1 QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 6/13/2016 10:34 AM 151. A light year is defined as the distance light can travel at 3 × 108 m/s in one year (365 days). How far is one light year in kilometers? Enter your answer accurate to two decimal places in scientific notation.

ANSWER: 9.46 × 1012 POINTS:

1

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Chapter 12: Special Relativity and Elementary Particles QUESTION TYPE: Subjective Short Answer HAS VARIABLES: False DATE CREATED: 6/13/2016 10:34 AM DATE MODIFIED: 7/12/2016 1:45 PM Match each item with the correct statement below. a. time dilation b. elementary particle c. antiparticle d. spin e. fermions f. bosons g. baryons h. leptons i. strange particles j. quarks k. charm l. electroweak interaction m. GUTs n. intermediate bosons o. mesons QUESTION TYPE: Matching HAS VARIABLES: False DATE CREATED: 6/15/2016 3:26 PM DATE MODIFIED: 7/12/2016 1:48 PM 152. intrinsic angular momentum carried by subatomic particles quantized in units of h/2π ANSWER: d POINTS: 1 153. fractionally charged particles; building blocks of all hadrons ANSWER: j POINTS: 1 154. subatomic particles not subject to the Pauli exclusion principle ANSWER: f POINTS: 1 155. prediction of special relativity that moving clocks run slow ANSWER: a POINTS: 1 156. quantum “charge” first explicitly manifested in the D0 meson ANSWER: k Copyright Cengage Learning. Powered by Cognero.

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Chapter 12: Special Relativity and Elementary Particles POINTS:

1

157. models for combining the electromagnetic, weak and strong nuclear interactions into a single basic force ANSWER: m POINTS: 1 158. may annihilate upon collision with a particle to produce gamma rays ANSWER: c POINTS: 1 159. subatomic particles belonging to one of three families that do not participate in the strong interaction ANSWER: h POINTS: 1 160. subatomic particles which possess a quantum “charge” that is conserved in strong and

electromagnetic interactions, but not in weak interactions ANSWER: i POINTS: 1 161. theory for which S. Weinberg and A. Salam shared the 1979 Nobel Prize in physics ANSWER: l POINTS: 1 162. strongly interacting spin 0 or 1 particles ANSWER: o POINTS: 1 163. carrier particles for the fundamental forces ANSWER: n POINTS: 1 164. strongly interacting spin 1/2 or 3/2 particles ANSWER: g POINTS: 1 165. spin 1/2 particles that do not interact via the strong force ANSWER: h POINTS: 1 166. these particles possess half-integral spins ANSWER: e POINTS: 1

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