Question 1

The total mechanical energy of a simple harmonic oscillating system is

Accepted Answer

A)  a maximum when it passes through the equilibrium point. 
B)  zero as it passes the equilibrium point. 
C)  a non-zero constant. 
D)  zero when it reaches the maximum displacement. 
E)  a minimum when it passes through the equilibrium point. 
A)  a maximum when it passes through the equilibrium point. 
B)  zero as it passes the equilibrium point. 
C)  a non-zero constant. 
D)  zero when it reaches the maximum displacement. 
E)  a minimum when it passes through the equilibrium point.

Question 2

The potential (relative to infinity) at the midpoint of a square is 3.0 V when a point charge of +Q is located at one of the corners of the square. What is the potential (relative to infinity) at the center
When each of the other corners is also contains a point charge of

Accepted Answer

A)  12 V 
B)  9.0 V 
C)  0 V 
D)  3.0 V 
A)  12 V 
B)  9.0 V 
C)  0 V 
D)  3.0 V

Question 3

Car  A  is traveling at  22.0 m/s and car  B  at  29.0 m/s. Car  A  is  300 m behind car  B  when the driver of car  A  accelerates his car with a uniform forward acceleration of  
How long after car  A  begins to accelerate does it take car  A  to overtake car  B  ?

Accepted Answer

A)   5.50 s 
B)   19.0 s 
C)   316 s 
D)   12.6 s 
E)  Car A never overtakes car B. 
A)   5.50 s 
B)   19.0 s 
C)   316 s 
D)   12.6 s 
E)  Car A never overtakes car B.

Question 4

The graph in the figure shows the velocity of a particle as it travels along the  x -axis. (a) In what direction  (+x  or  -x)  is the acceleration at  t=0.5 s?
(b) In what direction (  +x  or  -x  ) is the acceleration at  t=3.0 s?
(c) What is the average acceleration of the particle between  t=2.0 s and  t=4.0 s ?
(d) At what value of  t  is the instantaneous acceleration equal to  ?

Accepted Answer

(a)  -x 
(b)  +x 
(c

Question 5

A crane lifts a 2500-kg beam at a steady rate of 15 cm/s using a steel cable whose mass per unit length is 0.65 kg/m. What is the speed of transverse waves on this cable?

Accepted Answer

A)  190 m/s 
B)  580 m/s 
C)  1900 m/s 
D)  230 m/s 
E)  1200 m/s 
A)  190 m/s 
B)  580 m/s 
C)  1900 m/s 
D)  230 m/s 
E)  1200 m/s

Question 6

A proton and an electron are released from rest, with only the electrostatic force acting. Which of the following statements must be true about them as they move toward each other? (There could
Be more than one correct choice.)

Accepted Answer

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

Question 7

r is connected across a 220-V power source. What current will flow through the resistor?

Accepted Answer

A)  1.8 A 
B)  5.5 A 
C)  18 A 
D)  0.055 A 
A)  1.8 A 
B)  5.5 A 
C)  18 A 
D)  0.055 A

Question 8

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

Accepted Answer

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

Question 9

A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil with its north pole pointing down. If the magnet is dropped from this position what is the direction
Of the induced current in the coil, as viewed from above?

Accepted Answer

A)  counterclockwise 
B)  clockwise 
C)  An emf but no current is induced in the coil. 
D)  There is no current in the coil. 
A)  counterclockwise 
B)  clockwise 
C)  An emf but no current is induced in the coil. 
D)  There is no current in the coil.

Question 10

Which of the following situations is impossible?

Accepted Answer

A)  An object has velocity directed east and acceleration directed west. 
B)  An object has constant non-zero velocity and changing acceleration. 
C)  An object has velocity directed east and acceleration directed east. 
D)  An object has zero velocity but non-zero acceleration. 
E)  An object has constant non-zero acceleration and changing velocity. 
A)  An object has velocity directed east and acceleration directed west. 
B)  An object has constant non-zero velocity and changing acceleration. 
C)  An object has velocity directed east and acceleration directed east. 
D)  An object has zero velocity but non-zero acceleration. 
E)  An object has constant non-zero acceleration and changing velocity.

Question 11

A conductor is placed in a steady external electric field. Which of the following statements are correct for this situation? (There could be more than one correct choice.)

Accepted Answer

A)  The electric field just outside the surface of the conductor is perpendicular to the surface. 
B)  All the free electrons go to the surface of the conductor. 
C)  The electric field is zero inside the conductor. 
D)  The surface of the conductor is neutral. 
E)  None of the above statements are correct. 
A)  The electric field just outside the surface of the conductor is perpendicular to the surface. 
B)  All the free electrons go to the surface of the conductor. 
C)  The electric field is zero inside the conductor. 
D)  The surface of the conductor is neutral. 
E)  None of the above statements are correct.

Question 12

If the position versus time graph of an object is a horizontal line, the object is

Accepted Answer

A)  moving with constant non-zero speed. 
B)  moving with constant non-zero acceleration. 
C)  at rest. 
D)  moving with increasing speed. 
A)  moving with constant non-zero speed. 
B)  moving with constant non-zero acceleration. 
C)  at rest. 
D)  moving with increasing speed.

Question 13

When a gas expands adiabatically,

Accepted Answer

A)  it does no work. 
B)  the temperature of the gas remains constant. 
C)  the internal (thermal) energy of the gas increases. 
D)  work is done on the gas. 
E)  the internal (thermal) energy of the gas decreases. 
A)  it does no work. 
B)  the temperature of the gas remains constant. 
C)  the internal (thermal) energy of the gas increases. 
D)  work is done on the gas. 
E)  the internal (thermal) energy of the gas decreases.

Question 14

An organ pipe open at both ends has a length of 0.80 m. If the velocity of sound in air is 340 m/s, what is the frequency of the second harmonic of this pipe?

Accepted Answer

A)  213 Hz 
B)  850 Hz 
C)  425 Hz 
D)  638 Hz 
A)  213 Hz 
B)  850 Hz 
C)  425 Hz 
D)  638 Hz

Question 15

If a quantity you calculated has units of A · s, what is that quantity?

Accepted Answer

A)  resistance 
B)  resistivity 
C)  charge 
D)  capacitance 
E)  potential 
A)  resistance 
B)  resistivity 
C)  charge 
D)  capacitance 
E)  potential

Question 16

During each cycle, the compressor in a certain ideal Carnot refrigerator performs 480 J of work to remove 150 J of heat from the interior of the refrigerator. How much heat do the coils behind the
Refrigerator discharge into the kitchen each cycle?

Accepted Answer

A)  110 J 
B)  150 J 
C)  480 J 
D)  630 J 
E)  330 J 
A)  110 J 
B)  150 J 
C)  480 J 
D)  630 J 
E)  330 J

Question 17

A music tuner uses a 554-Hz C# tuning fork to tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency of the instrument?

Accepted Answer

A)  It must be 556 Hz. 
B)  It must be 552 Hz. 
C)  It could be either 556 Hz or 552 Hz. 
D)  It is neither 556 Hz or 552 Hz. 
E)  It could be either 553 Hz or 555 Hz. 
A)  It must be 556 Hz. 
B)  It must be 552 Hz. 
C)  It could be either 556 Hz or 552 Hz. 
D)  It is neither 556 Hz or 552 Hz. 
E)  It could be either 553 Hz or 555 Hz.

Question 18

Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?

Accepted Answer

A)  The equivalent resistance is less than that of the smallest resistor. 
B)  The equivalent resistance is more than the largest resistance. 
C)  The equivalent resistance is midway between the largest and smallest resistance. 
D)  The equivalent resistance is equal to the average of the four resistances. 
E)  None of the other choices is correct. 
A)  The equivalent resistance is less than that of the smallest resistor. 
B)  The equivalent resistance is more than the largest resistance. 
C)  The equivalent resistance is midway between the largest and smallest resistance. 
D)  The equivalent resistance is equal to the average of the four resistances. 
E)  None of the other choices is correct.

Question 19

Two loudspeakers placed 6.00 m apart are driven in phase by an audio oscillator having a frequency range from 1595 Hz to 2158 Hz. A point P is located 4.70 m from one loudspeaker and
3)60 m from the other speaker. The speed of sound in the room is 344 m/s. At what frequency (or
Frequencies) of the oscillator does the sound reaching point P interfere destructively? (There could
Be more than one correct choice.)

Accepted Answer

A)  1720 Hz 
B)  2130 Hz 
C)  2030 Hz 
D)  2100 Hz 
E)  1630 Hz 
A)  1720 Hz 
B)  2130 Hz 
C)  2030 Hz 
D)  2100 Hz 
E)  1630 Hz

Question 20

Consider two copper wires of equal length. One wire has twice the cross-sectional area of the other. How do the resistances of these two wires compare?

Accepted Answer

A)  The thicker wire has eight times the resistance of the thinner wire. 
B)  The thicker wire has one-half the resistance of the thinner wire. 
C)  The thicker wire has twice the resistance of the thinner wire. 
D)  The thicker wire has four times the resistance of the thinner wire. 
E)  The thicker wire has one-fourth the resistance of the thinner wire. 
A)  The thicker wire has eight times the resistance of the thinner wire. 
B)  The thicker wire has one-half the resistance of the thinner wire. 
C)  The thicker wire has twice the resistance of the thinner wire. 
D)  The thicker wire has four times the resistance of the thinner wire. 
E)  The thicker wire has one-fourth the resistance of the thinner wire.

Exam 2: Describing Motion: Kinematics in One Dimension

The total mechanical energy of a simple harmonic oscillating system is

The potential (relative to infinity) at the midpoint of a square is 3.0 V when a point charge of +Q is located at one of the corners of the square. What is the potential (relative to infinity) at the center When each of the other corners is also contains a point charge of

Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of How long after car A begins to accelerate does it take car A to overtake car B ?

A crane lifts a 2500-kg beam at a steady rate of 15 cm/s using a steel cable whose mass per unit length is 0.65 kg/m. What is the speed of transverse waves on this cable?

A proton and an electron are released from rest, with only the electrostatic force acting. Which of the following statements must be true about them as they move toward each other? (There could Be more than one correct choice.)

r is connected across a 220-V power source. What current will flow through the resistor?

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

A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil with its north pole pointing down. If the magnet is dropped from this position what is the direction Of the induced current in the coil, as viewed from above?

Which of the following situations is impossible?

A conductor is placed in a steady external electric field. Which of the following statements are correct for this situation? (There could be more than one correct choice.)

If the position versus time graph of an object is a horizontal line, the object is

When a gas expands adiabatically,

An organ pipe open at both ends has a length of 0.80 m. If the velocity of sound in air is 340 m/s, what is the frequency of the second harmonic of this pipe?

If a quantity you calculated has units of A · s, what is that quantity?

During each cycle, the compressor in a certain ideal Carnot refrigerator performs 480 J of work to remove 150 J of heat from the interior of the refrigerator. How much heat do the coils behind the Refrigerator discharge into the kitchen each cycle?

A music tuner uses a 554-Hz C# tuning fork to tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency of the instrument?

Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?

Consider two copper wires of equal length. One wire has twice the cross-sectional area of the other. How do the resistances of these two wires compare?

Introduction, Measurement, Estimating

Kinematics in Two Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Circular Motion; Gravitation

Work and Energy

Linear Momentum

Rotational Motion

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations and Waves

Sound

Temperature and Kinetic Theory

Heat

The Laws of Thermodynamics

Electric Charge and Electric Field

Electric Potential

Electric Currents

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

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy; Effects and Uses of Radiation

Elementary Particles

Astrophysics and Cosmology

Filters