General Physics I Test Bank

Course Introduction

General Physics I is an introductory course that covers the fundamental concepts and principles of physics, including mechanics, kinematics, dynamics, energy, momentum, and the laws of motion. Emphasizing conceptual understanding and problem-solving skills, the course explores topics such as vectors, Newtons laws, work and energy, rotational motion, and applications of these principles to real-world phenomena. Laboratory experiments and demonstrations reinforce theoretical knowledge and offer hands-on experience with physical systems and measurement techniques. This course is designed for students pursuing science, engineering, or pre-health disciplines, providing a strong foundation for further studies in physics and related fields.

Recommended Textbook Physics for Scientists and Engineers Technology Update 9th Edition Raymond A. Serway

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46 Chapters

2629 Verified Questions

2629 Flashcards

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Page 2

Chapter 1: Physics and Measurement

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Sample Questions

Q1) The basic function of a carburetor of an automobile is to atomize the gasoline and mix it with air to promote rapid combustion.As an example,assume that 30 cm3 of gasoline is atomized into N spherical droplets,each with a radius of 2.0 × 10 5 m.What is the total surface area of these N spherical droplets?

Answer: 45000 cm2

Q2) The standard exam page is 8.50 inches by 11.0 inches.Its area in cm2 is

A)19.5

B)36.8

C)93.5

D)237.

E)603.

Answer: E

Q3) The standard kilogram is a platinum-iridium cylinder 39 mm in height and 39 mm in diameter.What is the density of the material?

Answer: 21475 kg/m3

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Page 3

Chapter 2: Motion in One Dimension

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Sample Questions

Q1) Two identical balls are at rest side by side at the bottom of a hill.Some time after ball A is kicked up the hill,ball B is given a kick up the hill.Ball A is headed downhill when it passes ball B headed up the hill.At the instant when ball A passes ball B,

A)it has the same position and velocity as ball B.

B)it has the same position and acceleration as ball B.

C)it has the same velocity and acceleration as ball B.

D)it has the same displacement and velocity as ball B.

E)it has the same position,displacement and velocity as ball B.

Answer: B

Q2) Starting from rest,a car travels 1350 meters in 1.00 minute.It accelerated at 1.0 m/s2 until it reached its cruising speed.Then it drove the remaining distance at constant velocity.What was its cruising speed?

Answer: 30 m/s

Q3) A helicopter descends from a height of 600 m with uniform negative acceleration,reaching the ground at rest in 5.00 minutes.Determine the acceleration of the helicopter and its initial velocity.

Answer: 0.013 3 m/s2, 4.0 m/s

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Chapter 3: Vectors

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Sample Questions

Q1) In what quadrant are both the sine and tangent negative?

A)1st

B)2nd

C)3rd

D)4th

E)This cannot happen.

Answer: D

Q2) Refer to Exhibit 3-1.What is the magnitude of the resultant of these three forces?

A)27.0 N

B)33.2 N

C)36.3 N

D)23.8 N

E)105 N

Answer: D

Q3) A vector starts at coordinate (3.0,4.0)and ends at coordinate ( 2.0,16.0).What are the magnitude and direction of this vector?

Answer: 13.0 m,113°.

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Page 5

Chapter 4: Motion in Two Dimensions

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Sample Questions

Q1) A 0.20-km wide river has a uniform flow speed of 4.0 m/s toward the east.It takes 20 s for a boat to cross the river to a point directly north of its departure point on the south bank.In what direction must the boat be pointed in order to accomplish this?

A)23° west of north

B)20° west of north

C)24° west of north

D)22° west of north

E)17° west of north

Q2) A satellite is in a circular orbit 600 km above the Earth's surface.The acceleration of gravity is 8.21 m/s2 at this altitude.The radius of the Earth is 6400 km.Determine the speed of the satellite,and the time to complete one orbit around the Earth.

Q3) Wiley Coyote has missed the elusive roadrunner once again.This time,he leaves the edge of the cliff at 50.0 m/s horizontal velocity.If the canyon is 100 m deep,how far from the edge of the cliff does the coyote land?

Q4) A football is thrown upward at a 30.0° angle to the horizontal.To throw a 40.0-m pass,what must be the initial speed of the ball?

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Chapter 5: The Laws of Motion

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Sample Questions

Q1) A 4.0-kg block slides down a 35° incline at a constant speed when a 16-N force is applied acting up and parallel to the incline.What is the coefficient of kinetic friction between the block and the surface of the incline?

A)0.20

Q2) The vector sum of three co-planar forces

A)must be zero.

B)must be perpendicular to one of the three.

C)must be parallel to one of the three.

D)must be perpendicular to the plane.

E)may have any direction in the plane.

Q3) A high-diver of mass 70.0 kg jumps off a board 10.0 m above the water.If,two seconds after entering the water,his downward motion is stopped,what average upward force did the water exert on him?

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Chapter 6: Circular Motion and Other Applications of

Newtons Laws

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Sample Questions

Q1) A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m).When the mass is at the lowest point on the circle,the speed of the mass is 12 m/s.What is the magnitude of the force of the string on the mass at this position?

A)31 N

B)36 N

C)41 N

D)46 N

E)23 N

Q2) A space station in the form of a large wheel,120 m in diameter,rotates to provide an "artificial gravity" of 3.00 m/s2 for persons located at the outer rim.Find the rotational frequency of the wheel (in revolutions per minute)that will produce this effect.

Q3) What is the net force on a 10-kg solid steel sphere falling in air at terminal speed?

A)980 N

B)200 N

C)98 N

D)49 N

E)Some value other than those given above.

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Page 8

Chapter 7: Energy of a System

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Sample Questions

Q1) Carts A and B have equal masses and travel equal distances on straight frictionless tracks while a constant force F is applied to A,and a constant force 2F is applied to B.The relative amounts of work done by the two forces are related by

A)WA = 4 WB.

B)WA = 2 WB.

C)WA = WB.

D)WB = 2 WA.

E)WB = 4 WA.

Q2) A 10-kg block on a rough horizontal surface is attached to a light spring (force constant = 1.4 kN/m).The block is pulled 8.0 cm to the right from its equilibrium position and released from rest.The frictional force between the block and surface has a magnitude of 30 N.What is the kinetic energy of the block as it passes through its equilibrium position?

A)4.5 J

B)2.1 J

C)6.9 J

D)6.6 J

E)4.9 J

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Chapter 8: Conservation of Energy

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Sample Questions

Q1) An astronaut tosses a ball out in space where gravitational forces may be neglected.What will happen to the ball?

A)It will stop as soon as the force the astronaut gave it is used up.

B)It will stop when the energy the astronaut gave it runs out.

C)It will stop after a short time because there is no gravity to keep it moving.

D)It will move in a circle like a boomerang.

E)It will be slowed down very gradually by collisions with molecules in space.

Q2) As an object moves from point A to point B only two forces act on it: one force is nonconservative and does 30 J of work,the other force is conservative and does +50 J of work.Between A and B,

A)the kinetic energy of object increases,mechanical energy decreases.

B)the kinetic energy of object decreases,mechanical energy decreases.

C)the kinetic energy of object decreases,mechanical energy increases.

D)the kinetic energy of object increases,mechanical energy increases.

E)None of the above.

Q3) A simple pendulum,2.0 m in length,is released from rest when the support string is at an angle of 25° from the vertical.What is the speed of the suspended mass at the bottom of the swing?

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Chapter 9: Linear Momentum and Collisions

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Sample Questions

Q1) An 8.0-kg object moving 4.0 m/s in the positive x direction has a one-dimensional collision with a 2.0-kg object moving 3.0 m/s in the opposite direction.The final velocity of the 8.0-kg object is 2.0 m/s in the positive x direction.What is the total kinetic energy of the two-mass system after the collision?

A)32 J

B)52 J

C)41 J

D)25 J

E)29 J

Q2) A ball falls to the ground from height h and bounces to height h'.Momentum is conserved in the ball-earth system

A)no matter what height h' it reaches.

B)only if h' < h.

C)only if h' = h.

D)only if h' > h.

E)only if h' h.

Q3) A pitcher claims he can throw a baseball with as much momentum as a 3.00-g bullet moving with a speed of 1500 m/s.A baseball has a mass of 0.145 kg.What must be its speed if the pitcher's claim is valid?

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Page 11

Chapter 10: Rotation of a Rigid Object About a Fixed Axis

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Sample Questions

Q1) A uniform rod (length = 2.4 m)of negligible mass has a 1.0-kg point mass attached to one end and a 2.0-kg point mass attached to the other end.The rod is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through a point 1.0 m from the 2.0-kg mass.The rod is released from rest when it is horizontal.What is the angular velocity of the rod at the instant the 2.0-kg mass passes through its low point?

A)1.7 rad/s

B)2.2 rad/s

C)2.0 rad/s

D)1.5 rad/s

E)3.1 rad/s

Q2) Refer to Exhibit 10-3.The change in angular position, ,during the 7-second period is

A)21 rad,CW.

B)21 rad,CCW.

C)30 rad,CW.

D)30 rad,CCW.

E)39 rad,CCW.

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Page 12

Chapter 11: Angular Momentum

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Sample Questions

Q1) What is the angular momentum of the moon about the Earth? The mass of the moon is 7.35 × 1022 kg,the center-to-center separation of the Earth and the moon is 3.84 × 105 km,and the orbital period of the moon is 27.3 days.Ignore the small offset of the center of mass of the system from the center of the Earth in your calculation.

Q2) A solid cylinder of radius R = 1.0 m and mass 10 kg rotates about its axis.When its angular velocity is 10 rad/s,its angular momentum (in kg m2/s)is A)50.

B)20.

C)40.

D)25.

E)70.

Q3) Halley's comet moves about the sun in an elliptical orbit with its closest approach to the sun being 0.59 A.U.and its furthest distance being 35 A.U.[1 Astronomical Unit (A.U. )is the Earth-sun distance.] If the comet's speed at closest approach is 54 km/s,what is its speed when it is farthest from the sun?

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Chapter 12: Static Equilibrium and Elasticity

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Sample Questions

Q1) A 20-m long steel wire (cross-section 1.0 cm2,Young's modulus 2.0 × 1011 N/m2),is subjected to a load of 25 000 N.How much will the wire stretch under the load?

A)0.25 cm

B)2.5 cm

C)12.5 cm

D)25 cm

E)1.25 cm

Q2) If 1.0 m3 of concrete weighs 5 × 104 N,what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? (The compression strength of concrete is 1.7 × 107 N/m2)

Q3) For safety in climbing,a mountaineer uses a 50-m long nylon rope that is 1.0 cm in diameter.When supporting a 90-kg climber,the rope elongates 1.6 m.Find the Young's modulus for the rope material.

Q4) Find the minimum diameter of a steel wire 18 m long that will stretch no more than 9 mm when a load of 380 kg is hung on the lower end.(Y steel = 2.0 × 1011 N/m2).

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Chapter 13: Universal Gravitation

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Sample Questions

Q1) The period of a satellite circling planet Nutron is observed to be 84 s when it is in a circular orbit with a radius of 8.0 × 106 m.What is the mass of planet Nutron?

A)6.2 × 1028 kg

B)5.0 × 1028 kg

C)5.5 × 1028 kg

D)4.3 × 1028 kg

E)3.7 × 1028 kg

Q2) An object is released from rest when it is a height h above the surface of a planet of mass M and radius R.What is the speed of the object just before striking the surface of the planet? Neglect any air resistance.Let h = 4.0 × 106 m,R = 5.0 × 106 m,and M = 4.0 × 1024 kg.

A)7.8 km/s

B)3.5 km/s

C)5.4 km/s

D)6.9 km/s

E)4.8 km/s

Q3) When a falling meteor is at a distance above the Earth's surface of 3 times the Earth's radius,what is its acceleration due to the Earth's gravity?

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Chapter 14: Fluid Mechanics

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Sample Questions

Q1) A cube of water ice ( = 0.917 × 103 kg/m3)is placed in mercury ( = 13.6 × 103 kg/m3),which is liquid at 0° Celsius.If we ignore any possible melting of the ice cube and problems with the surface tension of mercury,the fraction of the ice cube that floats above the surface of the mercury is

A)0.067 4.

B)0.073 5.

C)0.926.

D)0.933.

E)1.00.

Q2) A wood block is placed on top of the ice in a large bowl half full of ice.The bowl is then filled to the brim with water,with the wood block riding on top of the ice.As the ice melts,

A)the density of the water decreases.

B)the water level falls below the rim.

C)the water level rises and water spills out of the bowl.

D)the water level does not change.

E)the wood block descends,causing water to spill out of the bowl.

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Chapter 15: Oscillatory Motion

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Sample Questions

Q1) When a damping force is applied to a simple harmonic oscillator which has period T0 in the absence of damping,the new period T is such that

A)T < T0.

B)T = T0.

C)T > T0.

D) T < 0T0.

E) T > 0T0.

Q2) Refer to Exhibit 15-1.The point at which the object has zero velocity and positive acceleration is

A)A

B)B

C)C

D)D

E)E

Q3) The mat of a trampoline is held by 32 springs,each having a spring constant of 5 000 N/m.A person with a mass of 40.0 kg jumps from a platform 1.93 m high onto the trampoline.Determine the stretch of each of the springs.

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Page 17

Chapter 16: Wave Motion

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Sample Questions

Q1) You are holding on to one end of a long string that is fastened to a rigid steel light pole.After producing a wave pulse that was 5 mm high and 4 cm wide,you want to produce a pulse that is 4 cm wide but 7 mm high.You must move your hand up and down once,

A)the same distance up as before,but take a shorter time.

B)the same distance up as before,but take a longer time.

C)a smaller distance up,but take a shorter time.

D)a greater distance up,but take a longer time.

E)a greater distance up,but take the same time.

Q2) If y = 0.02 sin (30x 400t)(SI units),the wave number is

A)30 rad/m

B)30/2 rad/m

C)400/2 rad/m

D)400 rad/m

E)60 rad/m

Q3) Bats can detect small objects such as insects that are of a size approximately that of one wavelength.If bats emit a chirp at a frequency of 60 kHz,and the speed of sound in air is 340 m/s,what is the smallest size insect they can detect?

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Chapter 17: Sound Waves

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Sample Questions

Q1) The variation in the pressure of helium gas,measured from its equilibrium value,is given by P = 2.9 × 10 5 cos (6.20x 3 000t)where x and t have units m and s,and P is measured in N/m2.Determine the wavelength (in m)of the wave.

A)1 500

B)0.32

C)477

D)1.01

E)0.50

Q2) When a workman strikes a steel pipeline with a hammer,he generates both longitudinal and transverse waves.The two types of reflected waves return 2.4 s apart.How far away is the reflection point? (For steel,vL = 6.2 km/s,vT = 3.2 km/s)

Q3) Calculate the intensity level in dB of a sound wave that has an intensity of 15 × 10 4 W/m2.

A)20

B)200

C)92

D)9

E)10

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Page 19

Chapter 18: Superposition and Standing Waves

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Sample Questions

Q1) A stretched string is observed to vibrate in three equal segments when driven by a 480 Hz oscillator.What is the fundamental frequency of vibration for this string?

A)480 Hz

B)320 Hz

C)160 Hz

D)640 Hz

E)240 Hz

Q2) A vertical tube one meter long is open at the top.It is filled with 75 cm of water.If the velocity of sound is 344 m/s,what will the fundamental resonant frequency be (in Hz)?

A)3.4

B)172

C)344

D)1.7

E)688

Q3) Find the frequencies of the first three harmonics of a 1.0-m long string which has a mass per unit length of 2.0 × 10 3 kg/m and a tension of 80 N when both ends are fixed in place.

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Chapter 19: Temperature

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Sample Questions

Q1) Which of the following is not a possible thermometric property of a body?

A)The change in length of a solid.

B)The change in volume of a gas at constant pressure.

C)The change in pressure of a gas at constant volume.

D)The change in weight at constant pressure and volume.

E)The change in electrical resistance of a conductor.

Q2) An auditorium has a volume of 6 × 103 m3.How many molecules of air are needed to fill the auditorium at one atmosphere and 0°C?

A)1.6 × 1029

B)1.6 × 1027

C)1.6 × 1025

D)1.6 × 1023

E)1.6 × 1020

Q3) A gold ring has an inner diameter of 2.168 cm at a temperature of 15.0°C.Determine its diameter at 100.0°C.( GOLD = 1.42 × 10 5/°C)

Q4) At what Fahrenheit temperature are the Kelvin and Fahrenheit temperatures numerically equal?

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Chapter 20: The First Law of Thermodynamics

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Sample Questions

Q1) If a person in Alaska were locked out of his house on a day when the temperature outside was 40°C,his thick clothing would mostly reduce the loss of thermal energy by A)conduction.

B)convection.

C)radiation.

D)all of the above.

E)convection and radiation.

Q2) How much heat (in kcal)must be removed to make ice at 10°C from 2 kg of water at 20°C? (The specific heat of ice is 0.50 cal/g °C. )

A)190

B)200

C)240

D)210

E)50

Q3) In braking an automobile,the friction between the brake drums and brake shoes converts the car's kinetic energy into heat.If a 1 500-kg automobile traveling at 30 m/s brakes to a halt,how much does the temperature rise in each of the four 8.0-kg brake drums? (The specific heat of each iron brake drum is 448 J/kg °C).

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Chapter 21: The Kinetic Theory of Gases

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Sample Questions

Q1) The root mean square speed of a gas molecule is greater than the average speed,because the former gives a greater weight to A)lighter molecules.

B)heavier molecules.

C)lower speeds.

D)higher speeds.

E)more probable speeds.

Q2) Assume molecules have an average diameter of 3.00 × 10 10 m.How many times larger is the mean free path than the diameter at one atmosphere and 0°C?

A)500

B)300

C)700

D)1 000

E)2 500

Q3) One mole of helium gas expands adiabatically from 2 atm pressure to 1 atm pressure.If the original temperature of the gas is 20°C,what is the final temperature of the gas? ( = 1.67)

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Chapter 22: Heat Engines, entropy, and the Second Law of

Thermodynamics

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Q1) A Carnot cycle,operating as a heat engine,consists,in the order given,of

A)an isothermal expansion,an isothermal compression,an adiabatic expansion and an adiabatic compression.

B)an adiabatic expansion,an adiabatic compression,an isothermal expansion and an isothermal compression.

C)an isothermal expansion,an adiabatic compression,an isothermal compression and an adiabatic expansion.

D)an adiabatic compression,an isothermal compression,an isothermal expansion and an adiabatic expansion.

E)an isothermal expansion,an adiabatic expansion,an isothermal compression and an adiabatic compression.

Q2) An 800-MW electric power plant has an efficiency of 30%.It loses its waste heat in large cooling towers.Approximately how much waste heat (in MJ)is discharged to the atmosphere per second?

A)1 200

B)1 900

C)800

D)560

E)240

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Chapter 23: Electric Fields

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Q1) A uniformly charged rod (length = 2.0 m,charge per unit length = 5.0 nC/m)is bent to form one quadrant of a circle.What is the magnitude of the electric field at the center of the circle?

A)62 N/C

B)56 N/C

C)50 N/C

D)44 N/C

E)25 N/C

Q2) Three point charges,two positive and one negative,each having a magnitude of 20 C are placed at the vertices of an equilateral triangle (30 cm on a side).What is the magnitude of the electrostatic force on one of the positive charges?

A)69 N

B)40 N

C)80 N

D)57 N

E)20 N

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Chapter 24: Gausss Law

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Sample Questions

Q1) An astronaut is in an all-metal chamber outside the space station when a solar storm results in the deposit of a large positive charge on the station.Which statement is correct?

A)The astronaut must abandon the chamber immediately to avoid being electrocuted.

B)The astronaut will be safe only if she is wearing a spacesuit made of non-conducting materials.

C)The astronaut does not need to worry: the charge will remain on the outside surface.

D)The astronaut must abandon the chamber if the electric field on the outside surface becomes greater than the breakdown field of air.

E)The astronaut must abandon the chamber immediately because the electric field inside the chamber is non-uniform.

Q2) The nucleus of a hydrogen atom,a proton,sets up an electric field.The distance between the proton and electron is about 5.1 × 10 11 m.What is the magnitude of the electric field at this distance from the proton? [The charge on the proton is +1.6 × 10 19 C.]

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Chapter 25: Electric Potential

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Q1) The electric field in a region of space is given by Ex = (3.0x)N/C,Ey = Ez = 0,where x is in m.Points A and B are on the x axis at xA = 3.0 m and xB = 5.0 m.Determine the potential difference VB VA.

A) 24 V

B)+24 V

C) 18 V

D)+30 V

E) 6.0 V

Q2) Identical 8.0- C point charges are positioned on the x axis at x = ±1.0 m and released from rest simultaneously.What is the kinetic energy of either of the charges after it has moved 2.0 m?

A)84 mJ

B)54 mJ

C)96 mJ

D)63 mJ

E)48 mJ

Q3) In the Bohr model of the hydrogen atom,the electron circles the proton at a distance of 0.529 × 10 10 m.Find the potential at the position of the electron.

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Page 27

Chapter 26: Capacitance and Dielectrics

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Q1) Is it feasible to construct an air-filled parallel-plate capacitor that has its two plates separated by 0.10 mm and has a capacitance of 1.0 F? Why or why not?

Q2) An initially uncharged parallel plate capacitor of capacitance C is charged to potential V by a battery.The battery is then disconnected.Which statement is correct?

A)There is no charge on either plate of the capacitor.

B)The capacitor can be discharged by grounding any one of its two plates.

C)Charge is distributed evenly over both the inner and outer surfaces of the plates.

D)The magnitude of the electric field outside the space between the plates is approximately zero.

E)The capacitance increases when the distance between the plates increases.

Q3) Which of the following materials has the highest dielectric constant?

A)air

B)Mylar

C)paper

D)Pyrex glass

E)water

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Chapter 27: Current and Resistance

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Q1) A nichrome wire and an aluminum wire,each with the same initial resistance,have the same change in resistance when heated separately.( Al = 2.82 × 10 8 m; Al = 3.9 × 10 3 / °C; nichrome = 1.50 × 10 6 m; nichrome = 0.40 × 10 3 / °C. )The ratio of the temperature change of the nichrome wire to the temperature change of the aluminum wire is

A)0.019.

B)0.10.

C)0.18.

D)9.8.

E)53.

Q2) A rod (length = 80 cm)with a rectangular cross section (1.5 mm × 2.0 mm)has a resistance of 0.20 .What is the resistivity of the material used to make the rod?

A)6.0 × 10 7 m

B)3.8 × 10 7 m

C)7.5 × 10 7 m

D)3.0 × 10 7 m

E)4.8 × 10 7 m

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Chapter 28: Direct-Current Circuits

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Q1) What is the maximum number of 100-W lightbulbs you can connect in parallel in a 120-V home circuit without tripping the 20-A circuit breaker?

Q2) When a 20-V emf is placed across two resistors in series,a current of 2.0 A is present in each of the resistors.When the same emf is placed across the same two resistors in parallel,the current through the emf is 10 A.What is the magnitude of the greater of the two resistances?

A)7.2

B)7.6

C)6.9

D)8.0

E)2.8

Q3) A battery has an internal resistance of 4.0 .Which of the following load resistors would have the most power delivered to it when connected across the battery?

A)1.4

B)2.0

C)4.0

D)8.0

E)16

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Chapter 29: Magnetic Fields

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Q1) An unusual lightning strike has a vertical portion with a positive current of +400 A upwards.The Earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 T.In N,the force exerted by the Earth's magnetic field on the 25 m-long current is

A)0.

B)0.012 N,East.

C)0.012 N,West.

D)0.30 N,West.

E)300 N,East.

Q2) A particle (q = 4.0 C,m = 5.0 mg)moves in a uniform magnetic field with a velocity having a magnitude of 2.0 km/s and a direction that is 50° away from that of the magnetic field.The particle is observed to have an acceleration with a magnitude of 5.8 m/s2.What is the magnitude of the magnetic field?

A)5.3 mT

B)4.9 mT

C)5.1 mT

D)4.7 mT

E)3.6 mT

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Chapter 30: Sources of the Magnetic Field

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Q1) A long,straight wire (radius = 2.0 mm)carries a current of 2.0 A distributed uniformly over a cross section perpendicular to the axis of the wire.What is the magnitude of the magnetic field at a distance of 1.0 mm from the axis of the wire?

A)0.40 mT

B)0.80 mT

C)0.10 mT

D)0.20 mT

E)0.75 mT

Q2) A hollow cylindrical (inner radius = 1.0 mm,outer radius = 3.0 mm)conductor carries a current of 80 A parallel to its axis.This current is uniformly distributed over a cross section of the conductor.Determine the magnitude of the magnetic field at a point that is 2.0 mm from the axis of the conductor.

A)8.0 mT

B)3.0 mT

C)5.3 mT

D)16 mT

E)1.2 mT

Q3) The field at (0,0,1.0 m)is in the positive z direction.

Q4) The magnetic field at (?3 m,0,0)is in the negative y direction.

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Chapter 31: Faradays Law

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Q1) A conducting rod (length = 80 cm)rotates at a constant angular rate of 15 revolutions per second about a pivot at one end.A uniform field (B = 60 mT)is directed perpendicularly to the plane of rotation.What is the magnitude of the emf induced between the ends of the rod?

A)2.7 V

B)2.1 V

C)2.4 V

D)1.8 V

E)3.3 V

Q2) A long solenoid has a radius of 2.0 cm and has 700 turns/m.If the current in the solenoid is decreasing at the rate of 8.0 A/s,what is the magnitude of the induced electric field at a point 2.5 cm from the axis of the solenoid?

A)56 V/m

B)8.8 V/m

C)88 V/m

D)69 V/m

E)44 V/m

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Chapter 32: Inductance

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Q1) A series LC circuit contains a 100 mH inductor,a 36.0 mF capacitor and a 12 V battery.The frequency of the electromagnetic oscillations in the circuit is

A)5.73 × 10 4 Hz.

B)9.55 × 10 3 Hz.

C)0.442 Hz.

D)2.65 Hz.

E)44.0 Hz.

Q2) If we wished to construct a "tank circuit" where electric charge originally stored on a capacitor flows through an inductor,then back again,what value of inductance should we place in series with a fully-charged 100 F capacitor to get the circuit to resonate at 60.0 Hz?

Q3) A series LC circuit contains a 100 mH inductor,a 36.0 mF capacitor and a 12 V battery.The period of the electromagnetic oscillations in the circuit is

A)0.0227 s.

B)0.377 s.

C)2.26 s.

D)105 s.

E)1750 s.

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Chapter 33: Alternating-Current Circuits

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Q1) A high-voltage powerline operates at 500000 V-rms and carries an rms current of 500 A.If the resistance of the cable is 0.050 /km,what is the resistive power loss in 200 km of the powerline?

A)250 kW

B)500 kW

C)1 Megawatt

D)2.5 Megawatts

E)250 Megawatts

Q2) In a parallel RLC circuit,where IR = IR,max sin( t),the current through the inductor,IL,is

A)IL = IL,max sin( t).

B)IL = IL,max sin( t).

C)IL = IL,max cos( t).

D)IL = IL,max cos( t).

E)IL = IL,max tan( t).

Q3) An ac power generator produces 50 A (rms)at 3600 V.The voltage is stepped up to 100000 V by an ideal transformer and the energy is transmitted through a long distance power line which has a resistance of 100 ohms.What percentage of the power delivered by the generator is dissipated as heat in the long-distance power line?

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Page 35

Chapter 34: Electromagnetic Waves

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Q1) At every instant the ratio of the magnitude of the electric to the magnetic field in an electromagnetic wave in vacuum is equal to

A)the speed of radio waves.

B)the speed of light.

C)the speed of gamma rays.

D)all of the above.

E)only (a)and (b)above.

Q2) Magnetic fields are produced by

A)constant electric currents.

B)electric currents that vary sinusoidally with time.

C)time-varying electric fields.

D)all of the above.

E)only (a)and (b)above.

Q3) An FM radio station broadcasts at 98.6 MHz.What is the wavelength of the radiowaves?

A)60.8 m

B)6.08 m

C)3.04 m

D)0.314 m

E)0.33 cm

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Chapter 35: The Nature of Light and the Principles of Ray Optics

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Q1) The first successful measurement of the speed of light was made by A)Rene Descartes.

B)Armand Fizeau.

C)Christian Huygens.

D)Ole Roemer.

E)James Maxwell.

Q2) Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface.The edges of the two mirrors meet at a 30° angle.A light ray that approaches mirror 1 is parallel to mirror 2.The angle of reflection of that ray from mirror 1 is

A)0°.

B)30°.

C)60°.

D)90°.

E)120°.

Q3) Light behaves like

A)a wave at times,and a particle at other times.

B)a wave.

C)a particle.

D)both a wave and a particle,because of its dual nature.

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Chapter 36: Image Formation

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Q1) A telescope is constructed with two lenses separated by a distance of 25 cm.The focal length of the objective is 20 cm.The focal length of the eyepiece is 5 cm.Calculate the magnitude of the angular magnification of the telescope.

A)6

B)4

C)8

D)10

E)5

Q2) A concave mirror has a focal length of 20 cm.What is the position (in cm)of the resulting image if the image is inverted and four times smaller than the object?

A)15

B)25

C)50

D)100

E) 15

Q3) Suppose an object is placed 6.0 cm in front of a lens that has a focal length of 4.0 cm.Where is the image located? What are the magnification and the character of the image?

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Chapter 37: Wave Optics

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Q1) In an interference pattern,the wavelength and frequency are

A)the same in both the regions of constructive interference and the regions of destructive interference.

B)greater in regions of constructive interference than in regions of destructive interference.

C)smaller in regions of constructive interference than in regions of destructive interference.

D)unchanged in regions of destructive interference but greater in regions of constructive interference.

E)unchanged in regions of destructive interference but smaller in regions of constructive interference.

Q2) The light reflected from a soap bubble (n = 1.40)appears red ( = 640 nm)at its center.What is the minimum thickness (in nm)?

A)124

B)104

C)114

D)134

E)234

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Chapter 38: Diffraction Patterns and Polarization

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Q1) When you look through a sheer curtain at a distant street lamp,you see a pattern of colored spots of light.This occurs by

A)polarization of light in scattering and partial absorption by the threads.

B)interference of light waves that pass through the threads with light waves that pass through the openings between the threads.

C)refraction of light waves differentially in the cylindrical threads.

D)diffraction of light waves passing through the two dimensional pattern of openings between the threads.

E)reflection of light waves by the sides of the threads.

Q2) A single slit of width a is illuminated by light of wavelength .If a = 4.3 ,the maximum number of dark fringes on a semi-circular screen surrounding the slit is A)2.

B)4.

C)6.

D)8.

E)9.

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Chapter 39: Relativity

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Q1) In a color television tube,electrons are accelerated through a potential difference of 20000 volts.With what velocity do the electrons strike the screen?

Q2) Captain Jirk reports to headquarters that he left the planet Senesca 1.88 × 104 seconds earlier.Headquarters sends back the message: "Was that spaceship proper time?" It will be spaceship proper time if it was

A)measured by one clock fixed at one spot on Senesca.

B)measured by one clock fixed at one spot on the spaceship.

C)measured by a clock on Senesca at departure and by a clock on the spaceship when reporting.

D)measured by a clock on the spaceship when departing and by a clock on Senesca when reporting.

E)calculated by dividing the distance from Senesca according to Senesca by the speed of the spaceship.

Q3) The period of a pendulum is 2.0 s in a stationary inertial frame of reference.What is its period when measured by an observer moving at a speed of 0.60 c with respect to the inertial frame of reference?

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Chapter 40: Introduction to Quantum Physics

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Q1) A quantum particle

A)can be localized in space.

B)can be represented by an infinitely long wave having a single frequency.

C)can be represented by a wave packet.

D)travels at the phase speed of the infinitely long wave having the highest frequency.

E)has the highest probability of being present in those regions of space where its component waves interfere destructively.

Q2) How much energy is in a 63 kHz photon of AM-radiation?

A)1.0 × 10 38 J

B)6.6 × 10 30 J

C)4.2 × 10 29 J

D)3.1 × 10 30 J

E)13 × 10 29 J

Q3) How much energy is in an 89.7 MHz photon of FM-radiation?

A)2.2 × 10 33 J

B)9.5 × 10 27 J

C)7.4 × 10 42 J

D)5.9 × 10 26 J

E)3.7 × 10 25 J

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Page 42

Chapter 41: Quantum Mechanics

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Q1) A particle is in the ground state of a one-dimensional box of length 1.0 m.What is the minimum value of its momentum (in kg m/s)?

A)9.9 × 10 34

B)6.6 × 10 34

C)3.3 × 10 34

D)13 × 10 34

E)cannot be solved unless mass of particle is known.

Q2) A particle is in the second excited state of a one-dimensional box of length 1.0 m.What is its momentum (in kg m/s)?

A)6.6 × 10 34

B)3.3 × 10 34

C)9.9 × 10 34

D)13 × 10 34

E)cannot be solved unless mass of particle is known

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Chapter 42: Atomic Physics

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Q1) In the operation of a laser

A)stimulated emission occurs.

B)there is a population inversion.

C)the excited state will tend to be metastable.

D)the photons emitted will have transitioned to the ground state.

E)For the answers (a), (b), (c),and (d),three are correct and one is incorrect.

Q2) What is the difference in wavelength for spectral lines emitted by hydrogen for transitions from the n = 16 level to the n = 2 level and transitions from the n = 15 level to the n = 2 level? (RH = 1.097 × 107 m 1. )

A)1.0 × 10 10 m

B)2.0 × 10 10 m

C)4.1 × 10 10 m

D)8.1 × 10 10 m

E)1.6 × 10 9 m

Q3) The energy difference between the upper and lower levels in a certain laser is 1.9593 eV.What is the wavelength of the light emitted by the laser?

Q4) A hydrogen atom emits a photon of wavelength 657.7 nm.From what energy state to what lower energy state did the electron jump?

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Page 44

Chapter 43: Molecules and Solids

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Q1) The rotational kinetic energy of a diatomic molecule can take the form

A)(1/2)m 2

B)(1/2)I 2

C)[m1m2/(m1 + m2)]r2 2

D)(1/2)mv2

E)1/2 2

Q2) Assume a diatomic molecule can be considered to be two point masses separated by a distance r.The center of mass of the system is located a distance x from m1,equal to A)m1r/(m1 + m2) B)m2r/(m1 + m2)

C)(m1 + m2)r/m1 D)(m1 + m2)r/m2 E)r(m2/m1)

Q3) In the hydrogen molecule,H2,the separation between the protons is 10 10 m.If the molecule is in its first rotational energy state,what is the angular velocity of the molecule about its center of mass?

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Page 45

Chapter 44: Nuclear Structure

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Q1) The radiocarbon content of 14C decreases after the death of a living system with a half-life of 5730 y.If an archaeologist working a dig finds an ancient firepit containing some partially consumed firewood and the wood contains only 12.5 percent of the 14C content of an equal carbon sample from a present-day tree,what is the age of the ancient site?

Q2) The reaction energy associated with a nuclear reaction is

A)the total change in rest energy as a result of the reaction.

B)equivalent to the disintegration energy.

C)the minimum energy necessary for such a reaction to occur.

D)called the threshold energy.

E)the binding energy of the nucleons.

Q3) Two nuclei which share the same mass number A always are (Hint: Eliminate any wrong answers. )

A)stable.

B)unstable.

C)isotopes.

D)isobars.

E)radioactive.

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Chapter 45: Applications of Nuclear Physics

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Q1) A rem (roentgen equivalent in man)is defined as (the product of)

A)the dose in RBE.

B)the dose in roentgen and the RBE factor.

C)the dose in rad times the dose in roentgen.

D)the dose in rad and the RBE factor.

E)the dose in rad and energy of radiation.

Q2) Approximately how fast is an ion of helium moving if it is in a plasma with a temperature of 108 K? m(He)= 4.002 603 u and u = 1.66 × 10 27 kg.

A)106 m/s

B)104 m/s

C)102 m/s

D)10 m/s

E)1 m/s

Q3) A neutron is characterized by the term "thermal neutron" when

A)its energy is of the order kT,where T is on the order of 0°C.

B)its energy is of the order kT,where T is on the order of 0 K.

C)its energy is of the order kT,where T is on the order of 273°C.

D)its energy is of the order kT,where T is on the order of 100°C.

E)its energy is of the order kT,where T is on the order of 0°R.

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Chapter 46: Particle Physics and Cosmology

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Q1) Name at least one conservation law that prevents each of the following reactions:

A) + p + + °

B)p + + + +

Q2) According to string theory,six space-time dimensions cannot be measured except as quantum numbers of internal particle properties because they are curled up in size of the order of

A)10 35 m.

B)10 15 m.

C)10 10 m.

D)10 8 m.

E)10 3 m.

Q3) The law of conservation of baryon number is that

A)the total number of baryons and leptons is conserved.

B)the total number of baryons is conserved.

C)the (number of baryons) (number of antibaryons)is conserved.

D)the total number of quarks is conserved.

E)the (number of baryons)+ (number of antibaryons)is conserved.

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