Question 1

During an isothermal process,5.0 J of heat is removed from an ideal gas. How much work does the gas do during this process?

Accepted Answer

A)  0.00 J 
B)  2.0 J 
C)  5.0 J 
D)  -5.0 J 
E)  10 J 
A)  0.00 J 
B)  2.0 J 
C)  5.0 J 
D)  -5.0 J 
E)  10 J

Question 2

If the diameter of a radar dish is doubled,what happens to its resolving power assuming that all other factors remain unchanged?

Accepted Answer

A)  The resolving power quadruples. 
B)  The resolving power doubles. 
C)  The resolving power is reduced to 1/2 of its original value. 
D)  The resolving power is reduced to 1/4 of its original value. 
E)  The resolving power does not change unless the focal length changes. 
A)  The resolving power quadruples. 
B)  The resolving power doubles. 
C)  The resolving power is reduced to 1/2 of its original value. 
D)  The resolving power is reduced to 1/4 of its original value. 
E)  The resolving power does not change unless the focal length changes.

Question 3

In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force P = 5600 N is applied horizontally to the crate.As the force pushes the crate a distance of 3.00 m up the incline,the speed changes from 1.40 m/s to 2.50 m/s.How much work does gravity do on the crate during this process?

Accepted Answer

A)  -10,300 J 
B)  -3400 J 
C)  +10,300 J 
D)  +3400 J 
E)  zero 
A)  -10,300 J 
B)  -3400 J 
C)  +10,300 J 
D)  +3400 J 
E)  zero

Question 4

Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 × 10-7 W/m2.Another student is 4.0 m away from the talkers.What sound intensity does the other student measure? Assume that the sound spreads out uniformly and undergoes no significant reflections or absorption.

Accepted Answer

A)  6.2 × 10-8 W/m2 
B)  1.5 × 10-7 W/m2 
C)  8.3 × 10-8 W/m2 
D)  7.8 × 10-7 W/m2 
E)  2.5 × 10-8 W/m2 
A)  6.2 × 10-8 W/m2 
B)  1.5 × 10-7 W/m2 
C)  8.3 × 10-8 W/m2 
D)  7.8 × 10-7 W/m2 
E)  2.5 × 10-8 W/m2

Question 5

A thin beam of laser light of wavelength 514 nm passes through a diffraction grating having
3952 lines/cm.The resulting pattern is viewed on a distant curved screen that can show all bright fringes up to and including ±90.0° from the central spot.If the experiment were performed with all of the apparatus under water (which has an index of refraction of 1.33),what would be the TOTAL number of bright spots that would show up on the screen?

Accepted Answer

A)  6 
B)  7 
C)  12 
D)  13 
E)  14 
A)  6 
B)  7 
C)  12 
D)  13 
E)  14

Question 6

When an LRC series circuit is driven at resonance,which of the following statements about the circuit are correct? (There may be more than one correct choice.)

Accepted Answer

A)  The impedance of the circuit is zero. 
B)  The impedance of the circuit has its maximum value. 
C)  The impedance of the circuit has its minimum value. 
D)  The inductive reactance and the capacitive reactance are both zero. 
E)  The inductive reactance and the capacitive reactance are exactly equal to each other. 
A)  The impedance of the circuit is zero. 
B)  The impedance of the circuit has its maximum value. 
C)  The impedance of the circuit has its minimum value. 
D)  The inductive reactance and the capacitive reactance are both zero. 
E)  The inductive reactance and the capacitive reactance are exactly equal to each other.

Question 7

A series LRC ac circuit has a peak voltage of 111 V and a peak current of 2.00 A. If the current lags the voltage by 35.0°,what is the average power of the circuit?

Accepted Answer

A)  91 W 
B)  182 W 
C)  78 W 
D)  156 W 
A)  91 W 
B)  182 W 
C)  78 W 
D)  156 W

Question 8

If an x-ray beam of wavelength 1.4 × 10-10 m makes an angle of 20° with a set of planes in a crystal causing first order constructive interference,at what angle will the second order line appear?

Accepted Answer

A)  40° 
B)  20° 
C)  43° 
D)  4.0° 
E)  11° 
A)  40° 
B)  20° 
C)  43° 
D)  4.0° 
E)  11°

Question 9

A long thin uniform rod of length 1.50 m is to be suspended from a frictionless pivot located at some point along the rod so that its pendulum motion takes 3.00 s. How far from the center of the rod should the pivot be located?

Accepted Answer

A)  7.98 cm 
B)  7.52 cm 
C)  8.73 cm 
D)  8.40 cm 
E)  23.4 cm 
A)  7.98 cm 
B)  7.52 cm 
C)  8.73 cm 
D)  8.40 cm 
E)  23.4 cm

Question 10

Heat is added to a pure substance in a closed container at a constant rate.The figure shows a graph of the temperature of the substance as a function of time.If Lf = latent heat of fusion and Lv = latent heat of vaporization,what is the value of the ratio Lv / Lf for this substance?

Accepted Answer

A)  5.0 
B)  4.5 
C)  7.2 
D)  3.5 
E)  1.5 
A)  5.0 
B)  4.5 
C)  7.2 
D)  3.5 
E)  1.5

Question 11

Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of 0.65c relative to the planets,which are at rest relative to each other.When he is precisely halfway between the planets,a distance of 1.0 light-hour from each one as measured in the planet frame,nuclear devices are detonated on both planets.The explosions are simultaneous in Mark's frame.What is the difference in the time of arrival of the flashes from the explosions as observed by Mark?

Accepted Answer

A)  0 min 
B)  180 min 
C)  90 min 
D)  360 min 
E)  113 min 
A)  0 min 
B)  180 min 
C)  90 min 
D)  360 min 
E)  113 min

Question 12

A turbine blade rotates with angular velocity ω(t)= 2.00 rad/s- 2.1.00 rad/s3 t2.What is the angular acceleration of the blade at t = 9.10 s?

Accepted Answer

A)  -38.2 rad/s2 
B)  -19.1 rad/s2 
C)  -86.0 rad/s2 
D)  -36.2 rad/s2 
E)  -172 rad/s2 
A)  -38.2 rad/s2 
B)  -19.1 rad/s2 
C)  -86.0 rad/s2 
D)  -36.2 rad/s2 
E)  -172 rad/s2

Question 13

A hollow conducting spherical shell has radii of 0.80 m and 1.20 m,as shown in the figure.The sphere carries a net excess charge of -500 nC.A point charge of +300 nC is present at the center.
(k = 1/4πε0 = 8.99 × 109 N • m2/C)The radial component of the electric field at a point that is 0.60 m from the center is closest to

Accepted Answer

A)  zero. 
B)  +5000 N/C. 
C)  +7500 N/C. 
D)  -5000 N/C. 
E)  -7500 N/C. 
A)  zero. 
B)  +5000 N/C. 
C)  +7500 N/C. 
D)  -5000 N/C. 
E)  -7500 N/C.

Question 14

If you swing a bucket of water fast enough in a vertical circle,at the highest point the water does not spill out because an outward force balances the pull of gravity on the water.

Accepted Answer

A) True 
 B)False

Question 15

The tension in each of two strings is adjusted so that both vibrate at exactly 666 Hz.The tension in one of the strings is then increased slightly.As a result,six beats per second are heard when both strings vibrate.What is the new frequency of the string that was tightened?

Accepted Answer

A)  672 Hz 
B)  660 Hz 
C)  669 Hz 
D)  663 Hz 
A)  672 Hz 
B)  660 Hz 
C)  669 Hz 
D)  663 Hz

Question 16

A certain spherical asteroid has a mass of 3.5 × 1016 kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10-11 N • m2/kg2)

Accepted Answer

A)  23 m/s 
B)  16 m/s 
C)  520 m/s 
D)  730 m/s 
A)  23 m/s 
B)  16 m/s 
C)  520 m/s 
D)  730 m/s

Question 17

An object of mass 4.0 kg starts at rest from the top of a rough inclined plane of height 10 m as shown in the figure.If the speed of the object at the bottom of the inclined plane is 10 m/s,how much work does friction do on this object as it slides down the incline?

Accepted Answer

The answer of An object of mass 4.0 kg starts...

Question 18

If the potential in a region is given by V(x,y,z)= xy - 3z-2,then the y component of the electric field in that region is

Accepted Answer

A)  x + y - 6z-3. 
B)  -y. 
C)  -x. 
D)  x + y. 
A)  x + y - 6z-3. 
B)  -y. 
C)  -x. 
D)  x + y.

Question 19

In a perfectly ELASTIC collision between two perfectly rigid objects

Accepted Answer

A)  the momentum of each object is conserved. 
B)  the kinetic energy of each object is conserved. 
C)  the momentum of the system is conserved but the kinetic energy of the system is not conserved. 
D)  both the momentum and the kinetic energy of the system are conserved. 
E)  the kinetic energy of the system is conserved, but the momentum of the system is not conserved. 
A)  the momentum of each object is conserved. 
B)  the kinetic energy of each object is conserved. 
C)  the momentum of the system is conserved but the kinetic energy of the system is not conserved. 
D)  both the momentum and the kinetic energy of the system are conserved. 
E)  the kinetic energy of the system is conserved, but the momentum of the system is not conserved.

Question 20

For the circuit shown in the figure,determine the current in
(a)the 7.0-Ω resistor.
(b)the 8.0-Ω resistor.
(c)the 4.0-Ω resistor.

Accepted Answer

(a)1.6 A

Exam 1: A: Foundations

During an isothermal process,5.0 J of heat is removed from an ideal gas. How much work does the gas do during this process?

If the diameter of a radar dish is doubled,what happens to its resolving power assuming that all other factors remain unchanged?

When an LRC series circuit is driven at resonance,which of the following statements about the circuit are correct? (There may be more than one correct choice.)

A series LRC ac circuit has a peak voltage of 111 V and a peak current of 2.00 A. If the current lags the voltage by 35.0°,what is the average power of the circuit?

If an x-ray beam of wavelength 1.4 × 10-10 m makes an angle of 20° with a set of planes in a crystal causing first order constructive interference,at what angle will the second order line appear?

A long thin uniform rod of length 1.50 m is to be suspended from a frictionless pivot located at some point along the rod so that its pendulum motion takes 3.00 s. How far from the center of the rod should the pivot be located?

Heat is added to a pure substance in a closed container at a constant rate.The figure shows a graph of the temperature of the substance as a function of time.If Lf = latent heat of fusion and Lv = latent heat of vaporization,what is the value of the ratio Lv / Lf for this substance?

A turbine blade rotates with angular velocity ω(t)= 2.00 rad/s- 2.1.00 rad/s3 t2.What is the angular acceleration of the blade at t = 9.10 s?

If you swing a bucket of water fast enough in a vertical circle,at the highest point the water does not spill out because an outward force balances the pull of gravity on the water.

The tension in each of two strings is adjusted so that both vibrate at exactly 666 Hz.The tension in one of the strings is then increased slightly.As a result,six beats per second are heard when both strings vibrate.What is the new frequency of the string that was tightened?

A certain spherical asteroid has a mass of 3.5 × 1016 kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10-11 N • m2/kg2)

An object of mass 4.0 kg starts at rest from the top of a rough inclined plane of height 10 m as shown in the figure.If the speed of the object at the bottom of the inclined plane is 10 m/s,how much work does friction do on this object as it slides down the incline?

If the potential in a region is given by V(x,y,z)= xy - 3z-2,then the y component of the electric field in that region is

In a perfectly ELASTIC collision between two perfectly rigid objects

For the circuit shown in the figure,determine the current in (a)the 7.0-Ω resistor. (b)the 8.0-Ω resistor. (c)the 4.0-Ω resistor.

Foundations

Motion in One Dimension

Acceleration

Momentum

Energy

Principle of Relativity

Interactions

Force

Work

Motion in a Plane

Motion in a Circle

Torque

Gravity

Special Relativity

Periodic Motion

Waves in One Dimension

Waves in Two and Three Dimensions

Fluids

Entropy

Energy Transferred Thermally

Degradation of Energy

Electric Interactions

The Electric Field

Gausss Law

Work and Energy in Electrostatics

Charge Separation and Storage

Magnetic Interactions

Magnetic Fields of Charged Particles in Motion

Changing Magnetic Fields

Changing Electric Fields

Electric Circuits

Electronics

Ray Optics

Wave and Particle Optics

Filters

If an x-ray beam of wavelength 1.4 × 10^-10 m makes an angle of 20° with a set of planes in a crystal causing first order constructive interference,at what angle will the second order line appear?

Heat is added to a pure substance in a closed container at a constant rate.The figure shows a graph of the temperature of the substance as a function of time.If L_f = latent heat of fusion and L_v = latent heat of vaporization,what is the value of the ratio L_v / L_f for this substance?

A turbine blade rotates with angular velocity ω(t)= 2.00 rad/s- 2.1.00 rad/s³t².What is the angular acceleration of the blade at t = 9.10 s?

A certain spherical asteroid has a mass of 3.5 × 10¹⁶ kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10^-11 N • m²/kg²)

If the potential in a region is given by V(x,y,z)= xy - 3z^-2,then the y component of the electric field in that region is