Question 1

A car initially traveling at  60 km/h  accelerates at a constant rate of  
How much time is required for the car to reach a speed of  90 km/h ?

Accepted Answer

A)  4.2 s 
B)  15 s 
C)  45 s 
D)  30 s 
A)  4.2 s 
B)  15 s 
C)  45 s 
D)  30 s

Question 2

A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper, with the aluminum and the copper in thermal contact. The specific heat capacity of aluminum is
More than double that of copper. Which object experiences the greater magnitude gain or loss of
Heat during the time the system takes to reach thermal equilibrium?

Accepted Answer

A)  the aluminum 
B)  the copper 
C)  Neither one; both of them experience the same size gain or loss of heat. 
D)  It is impossible to tell without knowing the masses. 
E)  It is impossible to tell without knowing the volumes. 
A)  the aluminum 
B)  the copper 
C)  Neither one; both of them experience the same size gain or loss of heat. 
D)  It is impossible to tell without knowing the masses. 
E)  It is impossible to tell without knowing the volumes.

Question 3

A pipe of length L that is closed at one end and open at the other end is resonating at its fundamental frequency. Which statement about the sound is correct?

Accepted Answer

A)  The wavelength is L and there is a displacement node at the pipe's open end. 
B)  The wavelength is 4L and there is a displacement node at the pipe's open end. 
C)  The wavelength is 4L and there is a displacement antinode at the pipe's open end. 
D)  The wavelength is L and there is a displacement antinode at the pipe's open end. 
A)  The wavelength is L and there is a displacement node at the pipe's open end. 
B)  The wavelength is 4L and there is a displacement node at the pipe's open end. 
C)  The wavelength is 4L and there is a displacement antinode at the pipe's open end. 
D)  The wavelength is L and there is a displacement antinode at the pipe's open end.

Question 4

An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way up? Neglect air resistance.

Accepted Answer

A)  0.52 s 
B)  1.2 s 
C)  3.1 s 
D)  4.2 s 
E)  2.4 s 
A)  0.52 s 
B)  1.2 s 
C)  3.1 s 
D)  4.2 s 
E)  2.4 s

Question 5

You are driving along a highway at 25.0 m/s when you hear the siren of an emergency vehicle traveling at constant speed in the opposite direction on the other side of the highway. When the
Vehicle is approaching you, you hear the frequency of the siren as 2380 Hz, but when it is past you
The frequency becomes 1680 Hz. What is the frequency of the siren? The speed of sound in air is
343 m/s.

Accepted Answer

A)  2010 Hz 
B)  1980 Hz 
C)  2000 Hz 
D)  2050 Hz 
E)  1850 Hz 
A)  2010 Hz 
B)  1980 Hz 
C)  2000 Hz 
D)  2050 Hz 
E)  1850 Hz

Question 6

A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in parallel with the first one, the time constant of
The new RC circuit will be

Accepted Answer

A)  one-fourth as large as before. 
B)  three times a large as before. 
C)  the same as before. 
D)  twice as large as before. 
E)  one-half as large as before. 
A)  one-fourth as large as before. 
B)  three times a large as before. 
C)  the same as before. 
D)  twice as large as before. 
E)  one-half as large as before.

Question 7

A boat loaded with rocks is floating in a swimming pool. If the rocks are thrown into the pool, the water level in the pool, after the rocks have settled to the bottom,

Accepted Answer

A)  stays the same. 
B)  falls. 
C)  rises. 
A)  stays the same. 
B)  falls. 
C)  rises.

Question 8

During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done by the gas in the process?

Accepted Answer

A)  -10 J 
B)  5.0 J 
C)  0 J 
D)  -5.0 J 
A)  -10 J 
B)  5.0 J 
C)  0 J 
D)  -5.0 J

Question 9

Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen molecules, compared to that of hydrogen
Molecules,

Accepted Answer

A)  is less. 
B)  is greater. 
C)  is the same. 
D)  cannot be determined without knowing the pressure and volume. 
A)  is less. 
B)  is greater. 
C)  is the same. 
D)  cannot be determined without knowing the pressure and volume.

Question 10

A ball is thrown downward in the absence of air resistance. After it has been released, which statement(s) concerning its acceleration is correct? (There could be more than one correct choice.)

Accepted Answer

A)  Its acceleration is constant. 
B)  Its acceleration is greater than g. 
C)  Its acceleration is constantly decreasing. 
D)  Its acceleration is zero. 
E)  Its acceleration is constantly increasing. 
A)  Its acceleration is constant. 
B)  Its acceleration is greater than g. 
C)  Its acceleration is constantly decreasing. 
D)  Its acceleration is zero. 
E)  Its acceleration is constantly increasing.

Question 11

Suppose a ball is thrown straight up and experiences no appreciable air resistance. What is its acceleration just before it reaches its highest point?

Accepted Answer

A)  exactly g 
B)  slightly less than g 
C)  slightly greater than g 
D)  zero 
A)  exactly g 
B)  slightly less than g 
C)  slightly greater than g 
D)  zero

Question 12

A violin with string length 32 cm and string density 1.5 g/cm resonates in its fundamental with the first overtone of a 2.0-m organ pipe with one end closed and one end open. What is the tension in
The string if the speed of sound in air is 344 m/s?

Accepted Answer

A)  110 N 
B)  56 N 
C)  1000 N 
D)  450 N 
E)  4100 N 
A)  110 N 
B)  56 N 
C)  1000 N 
D)  450 N 
E)  4100 N

Question 13

A steel ball sinks in water but floats in a pool of mercury, which is much denser than water. Where is the buoyant force on the ball greater?

Accepted Answer

A)  floating on the mercury 
B)  It is the same in both cases. 
C)  submerged in the water 
D)  It cannot be determined from the information given. 
A)  floating on the mercury 
B)  It is the same in both cases. 
C)  submerged in the water 
D)  It cannot be determined from the information given.

Question 14

You are driving home on a weekend from school at 55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive home after driving 4 hours and 15 minutes. How far is your
Hometown from school?

Accepted Answer

A)  200 mi 
B)  180 mi 
C)  210 mi 
D)  190 mi 
A)  200 mi 
B)  180 mi 
C)  210 mi 
D)  190 mi

Question 15

An ideal reversible heat pump is taking heat from the outside air at -10.0°C and discharging it into the house at 18.0°C. What is the coefficient of performance of this heat pump?

Accepted Answer

A)  0.533 
B)  10.4 
C)  0.644 
D)  0.0962 
E)  9.44 
A)  0.533 
B)  10.4 
C)  0.644 
D)  0.0962 
E)  9.44

Question 16

In a series RLC ac circuit, a second resistor is connected in series with the resistor previously in the circuit. As a result of this change, what happens to the impedance of the circuit?

Accepted Answer

A)  It increases for frequencies below resonance and decreases for frequencies above resonance. 
B)  It decreases for frequencies below resonance and increases for frequencies above resonance. 
C)  It increases. 
D)  It decreases. 
E)  It does not change. 
A)  It increases for frequencies below resonance and decreases for frequencies above resonance. 
B)  It decreases for frequencies below resonance and increases for frequencies above resonance. 
C)  It increases. 
D)  It decreases. 
E)  It does not change.

Question 17

The sound from the whistle of a truck moving at 17.0 m/s toward a cliff reflects from the cliff and is heard by the driver of the truck. When it is parked at the side of the road, the whistle from the
Truck produces sound of frequency 2.267 kHz. As observed by the driver of the truck, what is the
Change in frequency the sound from the whistle due to the reflection? The speed of sound is 343
M/s)

Accepted Answer

A)  228 Hz 
B)  207 Hz 
C)  472 Hz 
D)  236 Hz 
E)  118 Hz 
A)  228 Hz 
B)  207 Hz 
C)  472 Hz 
D)  236 Hz 
E)  118 Hz

Question 18

Two protons are fired toward each other in a particle accelerator, with only the electrostatic force acting. Which of the following statements must be true about them as they move closer together?
(There could be more than one correct choice.)

Accepted Answer

A)  Their kinetic energy keeps increasing. 
B)  Their electric potential energy keeps increasing. 
C)  Their kinetic energy keeps decreasing. 
D)  Their acceleration keeps decreasing. 
E)  Their electric potential energy keeps decreasing. 
A)  Their kinetic energy keeps increasing. 
B)  Their electric potential energy keeps increasing. 
C)  Their kinetic energy keeps decreasing. 
D)  Their acceleration keeps decreasing. 
E)  Their electric potential energy keeps decreasing.

Question 19

A string fixed at both ends is vibrating in one of its harmonics. If we now increase only the frequency at which the string is vibrating, which of the following characteristics do we also
Increase? (There could be more than one correct choice.)

Accepted Answer

A)  the amplitude of the traveling waves on the string 
B)  the wavelength of the traveling waves on the string 
C)  the period of the traveling waves on the string 
D)  the speed of the traveling waves on the string 
E)  none of the above 
A)  the amplitude of the traveling waves on the string 
B)  the wavelength of the traveling waves on the string 
C)  the period of the traveling waves on the string 
D)  the speed of the traveling waves on the string 
E)  none of the above

Question 20

In an RLC ac circuit, the values of the inductance and capacitance are both doubled. As a result of this change, the resonance frequency of the circuit is

Accepted Answer

A)  reduced to one-half the original value. 
B)  reduced to one-fourth the original value. 
C)  four times the original value. 
D)  the same as before. 
E)  twice the original value. 
A)  reduced to one-half the original value. 
B)  reduced to one-fourth the original value. 
C)  four times the original value. 
D)  the same as before. 
E)  twice the original value.

Exam 2: Describing Motion: Kinematics in One Dimension

A car initially traveling at 60 km/h accelerates at a constant rate of How much time is required for the car to reach a speed of 90 km/h ?

A pipe of length L that is closed at one end and open at the other end is resonating at its fundamental frequency. Which statement about the sound is correct?

An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way up? Neglect air resistance.

A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in parallel with the first one, the time constant of The new RC circuit will be

A boat loaded with rocks is floating in a swimming pool. If the rocks are thrown into the pool, the water level in the pool, after the rocks have settled to the bottom,

During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done by the gas in the process?

Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen molecules, compared to that of hydrogen Molecules,

A ball is thrown downward in the absence of air resistance. After it has been released, which statement(s) concerning its acceleration is correct? (There could be more than one correct choice.)

Suppose a ball is thrown straight up and experiences no appreciable air resistance. What is its acceleration just before it reaches its highest point?

A violin with string length 32 cm and string density 1.5 g/cm resonates in its fundamental with the first overtone of a 2.0-m organ pipe with one end closed and one end open. What is the tension in The string if the speed of sound in air is 344 m/s?

A steel ball sinks in water but floats in a pool of mercury, which is much denser than water. Where is the buoyant force on the ball greater?

You are driving home on a weekend from school at 55 mi/h for 110 miles. It then starts to snow and you slow to 35 mi/h. You arrive home after driving 4 hours and 15 minutes. How far is your Hometown from school?

An ideal reversible heat pump is taking heat from the outside air at -10.0°C and discharging it into the house at 18.0°C. What is the coefficient of performance of this heat pump?

In a series RLC ac circuit, a second resistor is connected in series with the resistor previously in the circuit. As a result of this change, what happens to the impedance of the circuit?

Two protons are fired toward each other in a particle accelerator, with only the electrostatic force acting. Which of the following statements must be true about them as they move closer together? (There could be more than one correct choice.)

A string fixed at both ends is vibrating in one of its harmonics. If we now increase only the frequency at which the string is vibrating, which of the following characteristics do we also Increase? (There could be more than one correct choice.)

In an RLC ac circuit, the values of the inductance and capacitance are both doubled. As a result of this change, the resonance frequency of the circuit is

Introduction, Measurement, Estimating

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Dynamics: Newtons Laws of Motion

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Work and Energy

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Static Equilibrium; Elasticity and Fracture

Fluids

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The Laws of Thermodynamics

Electric Charge and Electric Field

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Dc Circuits

Magnetism

Electromagnetic Induction and Faradays Law

Electromagnetic Waves

Light: Geometric Optics

The Wave Nature of Light

Optical Instruments

The Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics of Atoms

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Nuclear Energy; Effects and Uses of Radiation

Elementary Particles

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