General Physics
Exam Answer Key
Course Introduction
General Physics is an introductory course that covers the fundamental principles of classical physics, including mechanics, heat, sound, electricity, magnetism, optics, and basic concepts of modern physics. Designed for science and engineering majors, the course emphasizes understanding the laws of nature through problem-solving, experimentation, and the application of mathematical models. Students will develop analytical and critical thinking skills as they explore topics such as motion, forces, energy, waves, thermodynamics, electromagnetism, and the behavior of light, providing a solid foundation for further studies in physics and related disciplines.
Recommended Textbook Physics 10th Edition by John D. Cutnell
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10 Chapters
662 Verified Questions
662 Flashcards
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Chapter 11: Fluids
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65 Flashcards
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Sample Questions
Q1) What is the total pressure at point B?
A)1.01 × 10 Pa
B)3.64 × 10 Pa
C)4.27 × 10 Pa
D)6.44 × 10 Pa
E)7.45 × 10 Pa
Answer: B
Q2) A curtain hangs straight down in front of an open window.A sudden gust of wind blows past the window;and the curtain is pulled out of the window.Which law,principle,or equation can be used to explain this movement of the curtain?
A)Poiseuille's law
B)Bernoulli's equation
C)the equation of continuity
D)Archimedes' principle
E)Pascal's principle
Answer: B
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Chapter 13: The Transfer of Heat
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42 Flashcards
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Sample Questions
Q1) Complete the following statement: The interior of a thermos bottle is silvered to minimize heat transfer due to A)radiation.
B)conduction.
C)conduction and convection.
D)conduction and radiation.
E)conduction,convection,and radiation.
Answer: A
Q2) A granite wall has a thickness of 0.50 m and a thermal conductivity of 2.1 W/(m·C°).The temperature on one face of the wall is 5.2 °C and 20.0 °C on the opposite face.How much heat is transferred in one hour through each square meter of the granite wall?
A)2.2 × 10 J/m²
B)1.7 × 10 J/m²
C)7.4 × 10 J/m²
D)1.1 × 10 J/m²
E)62 J/m²
Answer: A
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4
Chapter 14: The Ideal Gas Law and Kinetic Theory
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Sample Questions
Q1) An ideal gas at 0 °C is contained within a rigid vessel.The temperature of the gas is increased by 1 C°.What is P<sub>f</sub>/P<sub> </sub>,the ratio of the final to initial pressure?
A)273/274
B)274/273
C)1/2
D)1/10
E)1/273
Answer: B
Q2) How many air molecules are in a room at temperature 23.8 °C and standard pressure if the dimensions of the room are 3.44 m × 3.26 m × 2.28 m?
A)2.08 × 10²
B)4.20 × 10²
C)3.78 × 10²
D)6.32 × 10²
E)8.05 × 10²
Answer: D
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Chapter 15: Thermodynamics
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Sample Questions
Q1) Which one of the following statements is true concerning the ratio of the molar heat capacities Cp/C for an ideal gas?
A)The ratio is always 1.
B)The ratio is always less than 1.
C)The ratio is always greater than 1.
D)The ratio is sometimes less than 1.
E)The ratio is sometimes greater than 1.
Q2) Suppose that the same gas is originally in state A as described above,but its volume is increased isothermally until a new volume of 3.0 liters is reached.Which one of the following statements for this isothermal process is false?
A)The change in the internal energy is zero.
B)The final state of the system will still be B.
C)The work done will be smaller for the isothermal process.
D)The heat added will be smaller for the isothermal process.
E)The heat added for the isothermal process will be equal to the work done.
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6
Chapter 17: The Principle of Linear Superposition and Interference
Phenomena
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Sample Questions
Q1) Which of the figures do not illustrate possible resonant situations?
A)1 and 4
B)2 and 3
C)4 and 5
D)5 and 6
E)4,5,and 6
Q2) The beat period occurring when two tuning forks are vibrating is 0.333 s.One of the forks is known to vibrate at 588.0 Hz.What are the possible vibration frequencies of the second tuning fork?
A)587.7 or 588.3 Hz
B)586.0 or 592.0 Hz
C)580.3 or 596.7 Hz
D)585.0 or 591.0 Hz
E)584.5 Hz or 591.5 Hz
Q3) Determine the fundamental frequency of the string.
A)14 Hz
B)28 Hz
C)42 Hz
D)56 Hz
E)70 Hz
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Chapter 20: Electric Circuits
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Sample Questions
Q1) What is the approximate average power dissipated in the iron?
A)450 W
B)600 W
C)850 W
D)1200 W
E)1700 W
Q2) Two wires,A and B,and a variable resistor,R,are connected in series to a battery.Which one of the following results will occur if the resistance of R is increased?
A)The current through A and B will increase.
B)The voltage across A and B will increase.
C)The voltage across the entire circuit will increase.
D)The power used by the entire circuit will increase.
E)The current through the entire circuit will decrease.
Q3) Of the five wires,which one has the smallest resistance?
A)wire A
B)wire B
C)wire C
D)wire D
E)wire E
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Chapter 22: Electromagnetic Induction
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Sample Questions
Q1) A transformer has 450 turns in its primary coil and 30 turns in its secondary coil.Which one of the following statements concerning this transformer is true?
A)This is a step-up transformer.
B)The turns ratio is 15 for this transformer.
C)The ratio of the voltages V<sub>s</sub> / V<sub>p</sub> is 15 for this transformer.
D)The ratio of the currents I<sub>s</sub> / I<sub>p</sub> is 0.067 for this transformer.
E)The power delivered to the secondary must be the same as that delivered to the primary.
Q2) The Earth's magnetic field passes through a square tabletop with a magnitude of 4.95 × 10<sup>-</sup> T and is directed at an angle of 165° relative to the normal of the tabletop.If the tabletop has 1.50-m sides,what is the magnitude of the magnetic flux through it?
A)1.08 × 10<sup>-</sup> Wb
B)7.11 × 10<sup>-</sup> Wb
C)2.88 × 10<sup>-</sup> Wb
D)1.92 × 10<sup>-</sup> Wb
E)3.30 × 10<sup>-</sup> Wb
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Page 9
Chapter 25: The Refl Ection of Light: Mirrors
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Sample Questions
Q1) A concave mirror has a radius of curvature of 60.0 cm.How close to the mirror should an object be placed so that the rays travel parallel to each other after reflection?
A)10.0 cm
B)15.0 cm
C)30.0 cm
D)45.0 cm
E)60.0 cm
Q2) An object is placed 20 cm in front of a concave spherical mirror that has a radius of curvature 60 cm.Which one of the following phrases best describes the image?
A)virtual and located at infinity
B)real and located 60 cm from the mirror
C)real and located 120 cm from the mirror
D)virtual and located 60 cm from the mirror
E)virtual and located 120 cm from the mirror
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Chapter 26: The Refraction of Light: Lenses and Optical Instruments
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Sample Questions
Q1) The speed of light in material A is 1.4 times as large as it is in material B.What is the ratio of the refractive indices,nA/nB,of these materials?
A)1.4
B)1.2
C)1.0
D)0.80
E)0.71
Q2) Determine the height and orientation of the image.
A)2 cm and upright
B)1 cm and inverted
C)2 cm and inverted
D)8 cm and upright
E)8 cm and inverted
Q3) What is the angle of refraction for this situation?
A)0.37°
B)0.65°
C)22°
D)41°
E)60°
Page 11
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Chapter 29: Particles and Waves
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Sample Questions
Q1) The de Broglie wavelength of an electron (m = 9.11 × 10<sup>-</sup>³¹ kg)is 1.2 × 10<sup>-</sup>¹ m.Determine the kinetic energy of the electron.
A)1.5 × 10<sup>-</sup>¹ J
B)1.6 × 10<sup>-</sup>¹ J
C)1.7 × 10<sup>-</sup>¹ J
D)1.8 × 10<sup>-</sup>¹ J
E)1.9 × 10<sup>-</sup>¹ J
Q2) Photons of what minimum frequency are required to remove electrons from gold?
Note: The work function for gold is 4.8 eV.
A)7.3 × 10¹ Hz
B)1.2 × 10¹ Hz
C)3.8 × 10¹ Hz
D)6.5 × 10¹ Hz
E)4.6 × 10¹ Hz
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