Question 1

What is 0.2052/3,expressed to the proper number of significant figures?

Accepted Answer

A)  0.348 
B)  0.35 
C)  0.3 
D)  0.3477 
A)  0.348 
B)  0.35 
C)  0.3 
D)  0.3477

Question 2

Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure.Which of the arrows represents the direction of the net electric field at the center of the square?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  The field is equal to zero at point P. 
A)  A 
B)  B 
C)  C 
D)  D 
E)  The field is equal to zero at point P.

Question 3

A box of mass m is pressed against (but is not attached to)an ideal spring of force constant k and negligible mass,compressing the spring a distance x.After it is released,the box slides up a frictionless incline as shown in the figure and eventually stops.If we repeat this experiment with a box of mass 2m

Accepted Answer

A)  the lighter box will go twice as high up the incline as the heavier box. 
B)  just as it moves free of the spring, the lighter box will be moving twice as fast as the heavier box. 
C)  both boxes will have the same speed just as they move free of the spring. 
D)  both boxes will reach the same maximum height on the incline. 
E)  just as it moves free of the spring, the heavier box will have twice as much kinetic energy as the lighter box. 
A)  the lighter box will go twice as high up the incline as the heavier box. 
B)  just as it moves free of the spring, the lighter box will be moving twice as fast as the heavier box. 
C)  both boxes will have the same speed just as they move free of the spring. 
D)  both boxes will reach the same maximum height on the incline. 
E)  just as it moves free of the spring, the heavier box will have twice as much kinetic energy as the lighter box.

Question 4

You are standing in a moving bus,facing forward,and you suddenly fall forward as the bus comes to an immediate stop.The force acting on you that causes you to fall forward is

Accepted Answer

A)  the force of gravity. 
B)  the normal force due to your contact with the floor of the bus. 
C)  the force due to static friction between you and the floor of the bus. 
D)  the force due to kinetic friction between you and the floor of the bus. 
E)  No forces were acting on you to cause you to fall. 
A)  the force of gravity. 
B)  the normal force due to your contact with the floor of the bus. 
C)  the force due to static friction between you and the floor of the bus. 
D)  the force due to kinetic friction between you and the floor of the bus. 
E)  No forces were acting on you to cause you to fall.

Question 5

A ray of light consisting of blue light (wavelength 480 nm)and red light (wavelength 670 nm)is incident on a thick piece of glass at 80°. What is the angular separation between the refracted red and refracted blue beams while they are in the glass? (The respective indices of refraction for the blue light and the red light are 1.4636 and 1.4561.)

Accepted Answer

A)  0.27° 
B)  0.33° 
C)  0.36° 
D)  0.46° 
E)  0.54° 
A)  0.27° 
B)  0.33° 
C)  0.36° 
D)  0.46° 
E)  0.54°

Question 6

In the figure a current of 6.0 A is drawn from the battery.What is the terminal voltage Vab of the battery?

Accepted Answer

A)  0.00 V 
B)  +12 V 
C)  +24 V 
D)  -12 V 
E)  -24 V 
A)  0.00 V 
B)  +12 V 
C)  +24 V 
D)  -12 V 
E)  -24 V

Question 7

An ice cube at 0°C is placed in a very large bathtub filled with water at 30°C and allowed to melt,causing no appreciable change in the temperature of the bath water.Which one of the following statements is true?

Accepted Answer

A)  The entropy gained by the ice cube is equal to the entropy lost by the water. 
B)  The entropy lost by the ice cube is equal to the entropy gained by the water. 
C)  The net entropy change of the system (ice plus water) is zero because no heat was added to the system. 
D)  The entropy of the system (ice plus water) increases because the process is irreversible. 
E)  The entropy of the water does not change because its temperature did not change. 
A)  The entropy gained by the ice cube is equal to the entropy lost by the water. 
B)  The entropy lost by the ice cube is equal to the entropy gained by the water. 
C)  The net entropy change of the system (ice plus water) is zero because no heat was added to the system. 
D)  The entropy of the system (ice plus water) increases because the process is irreversible. 
E)  The entropy of the water does not change because its temperature did not change.

Question 8

A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long.When you gently pluck the upper end of the wire,a pulse travels down the wire and returns 7.84 ms later,having reflected off the lower end.The stone is heavy enough to prevent the lower end of the wire from moving.What is the mass m of the stone?

Accepted Answer

A)  8.90 kg 
B)  23.1 kg 
C)  35.6 kg 
D)  227 kg 
E)  349 kg 
A)  8.90 kg 
B)  23.1 kg 
C)  35.6 kg 
D)  227 kg 
E)  349 kg

Question 9

The following exact conversion equivalents are given: 1 m = 100 cm,1 in = 2.54 cm,and 1 ft = 12 in. If a computer screen has an area of 1.27 ft2,this area is closest to

Accepted Answer

A)  0.00284 m2. 
B)  0.0465 m2. 
C)  0.118 m2. 
D)  0.284 m2. 
E)  4.65 m2. 
A)  0.00284 m2. 
B)  0.0465 m2. 
C)  0.118 m2. 
D)  0.284 m2. 
E)  4.65 m2.

Question 10

What is the average kinetic energy of an ideal gas molecule at 569°C? (The Boltzmann constant is
1)38 × 10-23 J/K.)

Accepted Answer

A)  1.74 × 10-20 J 
B)  5.81 × 10-21 J 
C)  1.18 × 10-17 J 
D)  3.93 × 10-19 J 
A)  1.74 × 10-20 J 
B)  5.81 × 10-21 J 
C)  1.18 × 10-17 J 
D)  3.93 × 10-19 J

Question 11

The emf and the internal resistance of a battery are shown in the figure.If a current of 7.8 A is established through the battery from b to a,what is the terminal voltage Vab of the battery?

Accepted Answer

A)  -30 V 
B)  80 V 
C)  30 V 
D)  -80 V 
E)  zero 
A)  -30 V 
B)  80 V 
C)  30 V 
D)  -80 V 
E)  zero

Question 12

A force   = 12 N  
- 10 N  
Acts on an object.How much work does this force do as the object moves from the origin to the point

Accepted Answer

A)  46 J 
B)  266 J 
C)  37 J 
D)  62 J 
A)  46 J 
B)  266 J 
C)  37 J 
D)  62 J

Question 13

(a)Internal human body temperature is often stated to be normal at 98.6°F. What is this temperature on the Celsius and Kelvin scales?
(b)Gallium boils at 2205°C.What is the corresponding temperature in the Fahrenheit and Kelvin scales?
(c)The boiling point of liquid nitrogen is 77.0 K.What is the corresponding temperature in the Fahrenheit and Celsius scales?

Accepted Answer

(a)37.0°C
,310 K 
(b

Question 14

A catapult is tested by Roman legionnaires.They tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): Range = 0.20 km;
Angle of launch = π/4; landing height = launch height.What is the initial velocity of launch of the boulders if air resistance is negligible?

Accepted Answer

A)  44 m/s 
B)  1.4 m/s 
C)  22 m/s 
D)  0.69 m/s 
A)  44 m/s 
B)  1.4 m/s 
C)  22 m/s 
D)  0.69 m/s

Question 15

An automobile engine takes in 4000 J of heat and performs 1100 J of mechanical work in each cycle.
(a) Calculate the engine's efficiency.
(b) How much heat is "wasted" in each cycle?

Accepted Answer

The answer of An automobile engine takes in 4000 J...

Question 16

A boy throws a rock with an initial velocity of 2.15 m/s at 30.0° above the horizontal.If air resistance is negligible,how long does it take for the rock to reach the maximum height of its trajectory?

Accepted Answer

A)  0.110 s 
B)  0.194 s 
C)  0.215 s 
D)  0.303 s 
A)  0.110 s 
B)  0.194 s 
C)  0.215 s 
D)  0.303 s

Question 17

Two stones,one of mass m and the other of mass 2m,are thrown directly upward with the same velocity at the same time from ground level and feel no air resistance.Which statement about these stones is true?

Accepted Answer

A)  The heavier stone will go twice as high as the lighter one because it initially had twice as much kinetic energy. 
B)  Both stones will reach the same height because they initially had the same amount of kinetic energy. 
C)  At their highest point, both stones will have the same gravitational potential energy because they reach the same height. 
D)  At its highest point, the heavier stone will have twice as much gravitational potential energy as the lighter one because it is twice as heavy. 
E)  The lighter stone will reach its maximum height sooner than the heavier one. 
A)  The heavier stone will go twice as high as the lighter one because it initially had twice as much kinetic energy. 
B)  Both stones will reach the same height because they initially had the same amount of kinetic energy. 
C)  At their highest point, both stones will have the same gravitational potential energy because they reach the same height. 
D)  At its highest point, the heavier stone will have twice as much gravitational potential energy as the lighter one because it is twice as heavy. 
E)  The lighter stone will reach its maximum height sooner than the heavier one.

Question 18

An ideal gas is allowed to expand slowly at constant temperature to twice its original volume. During the expansion,the gas absorbs 200 kJ of heat.
(a)What is the change in the internal (thermal)energy of the gas during the expansion?
(b)How much work does the gas do during the expansion?

Accepted Answer

The answer of An ideal gas is allowed to expand...

Question 19

A metal having a work function of 2.5 eV is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm.For which one of the following ranges of the wavelength band in this white light are photoelectrons NOT produced? (h = 6.626 × 10-34 J • s,c = 3.00 × 108 m/s,
1 eV = 1.60 × 10-19 J)

Accepted Answer

A)  500 nm to 700 nm 
B)  400 nm to 560 nm 
C)  500 nm to 560 nm 
D)  400 nm to 500 nm 
E)  560 nm to 700 nm 
A)  500 nm to 700 nm 
B)  400 nm to 560 nm 
C)  500 nm to 560 nm 
D)  400 nm to 500 nm 
E)  560 nm to 700 nm

Question 20

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

Accepted Answer

A)  The impedance has its maximum value. 
B)  The reactance of the inductor is zero. 
C)  The reactance of the capacitor is zero. 
D)  The reactance due to the inductor and capacitor has its maximum value. 
E)  The current amplitude is a maximum. 
A)  The impedance has its maximum value. 
B)  The reactance of the inductor is zero. 
C)  The reactance of the capacitor is zero. 
D)  The reactance due to the inductor and capacitor has its maximum value. 
E)  The current amplitude is a maximum.

Exam 1: A: Foundations

What is 0.2052/3,expressed to the proper number of significant figures?

Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure.Which of the arrows represents the direction of the net electric field at the center of the square?

You are standing in a moving bus,facing forward,and you suddenly fall forward as the bus comes to an immediate stop.The force acting on you that causes you to fall forward is

In the figure a current of 6.0 A is drawn from the battery.What is the terminal voltage Vab of the battery?

An ice cube at 0°C is placed in a very large bathtub filled with water at 30°C and allowed to melt,causing no appreciable change in the temperature of the bath water.Which one of the following statements is true?

The following exact conversion equivalents are given: 1 m = 100 cm,1 in = 2.54 cm,and 1 ft = 12 in. If a computer screen has an area of 1.27 ft2,this area is closest to

What is the average kinetic energy of an ideal gas molecule at 569°C? (The Boltzmann constant is 1)38 × 10-23 J/K.)

The emf and the internal resistance of a battery are shown in the figure.If a current of 7.8 A is established through the battery from b to a,what is the terminal voltage Vab of the battery?

A force = 12 N - 10 N Acts on an object.How much work does this force do as the object moves from the origin to the point

An automobile engine takes in 4000 J of heat and performs 1100 J of mechanical work in each cycle. (a) Calculate the engine's efficiency. (b) How much heat is "wasted" in each cycle?

A boy throws a rock with an initial velocity of 2.15 m/s at 30.0° above the horizontal.If air resistance is negligible,how long does it take for the rock to reach the maximum height of its trajectory?

Two stones,one of mass m and the other of mass 2m,are thrown directly upward with the same velocity at the same time from ground level and feel no air resistance.Which statement about these stones is true?

An ideal gas is allowed to expand slowly at constant temperature to twice its original volume. During the expansion,the gas absorbs 200 kJ of heat. (a)What is the change in the internal (thermal)energy of the gas during the expansion? (b)How much work does the gas do during the expansion?

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

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

What is 0.205^2/3,expressed to the proper number of significant figures?

In the figure a current of 6.0 A is drawn from the battery.What is the terminal voltage V_ab of the battery?

The following exact conversion equivalents are given: 1 m = 100 cm,1 in = 2.54 cm,and 1 ft = 12 in. If a computer screen has an area of 1.27 ft²,this area is closest to

What is the average kinetic energy of an ideal gas molecule at 569°C? (The Boltzmann constant is 1)38 × 10^-23 J/K.)

The emf and the internal resistance of a battery are shown in the figure.If a current of 7.8 A is established through the battery from b to a,what is the terminal voltage V_ab of the battery?