Question 1

A 100-W resistance heater is connected to a 110-V dc source. What current flows through the heater?

Accepted Answer

A)  4.4 A 
B)  1.1 A 
C)  0.91 A 
D)  2.2 A 
E)  3.3 A 
A)  4.4 A 
B)  1.1 A 
C)  0.91 A 
D)  2.2 A 
E)  3.3 A C

Question 2

Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential at a given point in the field is 80 V, what is the potential at a point 1.0 m directly south of
That point?

Accepted Answer

A)  0 V 
B)  50 V 
C)  30 V 
D)  80 V 
A)  0 V 
B)  50 V 
C)  30 V 
D)  80 V D

Question 3

Which of the following graphs represent an object at rest? (There could be more than one correct choice.) 
(a)  
(b)  
(c)  
(d)  
(e)

Accepted Answer

A)  graph a 
B)  graph b 
C)  graph c 
D)  graph d 
E)  graph e 
A)  graph a 
B)  graph b 
C)  graph c 
D)  graph d 
E)  graph e A

Question 4

An ideal Carnot engine is operated as an air conditioner to cool a house in the summer. The air conditioner removes 14 kJ of heat per second from the house, and maintains the inside
Temperature at 293 K, while the outside temperature is 369 K. The power required to run the air
Conditioner under these operating conditions is closest to

Accepted Answer

A)  5800 W. 
B)  4400 W. 
C)  5100 W. 
D)  3600 W. 
E)  6600 W. 
A)  5800 W. 
B)  4400 W. 
C)  5100 W. 
D)  3600 W. 
E)  6600 W.

Question 5

If, with steady state heat flow established, you double the thickness of a wall built from solid uniform material, the rate of heat loss for a given temperature difference across the thickness will

Accepted Answer

A)  also double. 
B)  become 1/ 2 of its original value. 
C)  become one-half its original value. 
D)  become four times its original value. 
E)  become one-fourth its original value. 
A)  also double. 
B)  become 1/ 2 of its original value. 
C)  become one-half its original value. 
D)  become four times its original value. 
E)  become one-fourth its original value.

Question 6

An airplane needs to reach a forward velocity of  203.0 km/h to take off. On a 2000-m runway, what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 7

A parallel-plate capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference across the
Plates. A slab of a dielectric material is inserted in the region between the plates and completely
Fills it. What changes would you observe as the dielectric is inserted? (There could be more than
One correct choice.)

Accepted Answer

A)  Both the charge on the plates of the capacitor and its capacitance would change. 
B)  Nothing would change. 
C)  Only the capacitance would change. 
D)  The potential difference across the plates would increase. 
E)  Only the charge on the plates of the capacitor would change. 
A)  Both the charge on the plates of the capacitor and its capacitance would change. 
B)  Nothing would change. 
C)  Only the capacitance would change. 
D)  The potential difference across the plates would increase. 
E)  Only the charge on the plates of the capacitor would change.

Question 8

A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest the period of the pendulum is T. How does the period of the pendulum change when the elevator
Moves downward with constant acceleration?

Accepted Answer

A)  The period increases. 
B)  The period does not change. 
C)  The period increases if the upward acceleration is more than g/2 but decreases if the upward acceleration is less than g/2. 
D)  The period decreases. 
E)  The period becomes zero. 
A)  The period increases. 
B)  The period does not change. 
C)  The period increases if the upward acceleration is more than g/2 but decreases if the upward acceleration is less than g/2. 
D)  The period decreases. 
E)  The period becomes zero.

Question 9

If the result of your calculation of a quantity has SI units kg ·

Accepted Answer

A)  an electric potential difference. 
B)  an electric potential energy. 
C)  a capacitance 
D)  an electric field strength. 
E)  a dielectric constant. 
A)  an electric potential difference. 
B)  an electric potential energy. 
C)  a capacitance 
D)  an electric field strength. 
E)  a dielectric constant.

Question 10

If the length and diameter of a wire of circular cross section are both tripled, the resistance will be

Accepted Answer

A)  increased by a factor of 9. 
B)  tripled. 
C)  unchanged. 
D)  1/3 of what it originally was. 
E)  1/9 of what it originally was. 
A)  increased by a factor of 9. 
B)  tripled. 
C)  unchanged. 
D)  1/3 of what it originally was. 
E)  1/9 of what it originally was.

Question 11

Consider two pipes of the same length: one pipe is open at both ends and the other pipe is closed on one end but open at the other end. If the fundamental frequency of the totally open pipe is 300
Hz, what is the fundamental frequency of the other pipe?

Accepted Answer

A)  450 Hz 
B)  150 Hz 
C)  600 Hz 
D)  300 Hz 
A)  450 Hz 
B)  150 Hz 
C)  600 Hz 
D)  300 Hz

Question 12

A light-year is the distance that light travels in one year. The speed of light is 3.00 × 108 m/s. How many miles are there in one light-year? (1 mi = 1609 m, 1 y = 365 d)

Accepted Answer

A)  5.88 × 1015 mi 
B)  9.46 × 1012 mi 
C)  5.88 × 1012 mi 
D)  9.46 × 1015 mi 
A)  5.88 × 1015 mi 
B)  9.46 × 1012 mi 
C)  5.88 × 1012 mi 
D)  9.46 × 1015 mi

Question 13

Which of the following graphs represent an object having zero acceleration?

Accepted Answer

A)  only graph a 
B)  only graph b 
C)  graphs b and c 
D)  graphs a and b 
E)  graphs c and d 
A)  only graph a 
B)  only graph b 
C)  graphs b and c 
D)  graphs a and b 
E)  graphs c and d

Question 14

A car starts from rest and accelerates uniformly at   toward the north. A second car starts from rest  6.0 s later at the same point and accelerates uniformly at   toward the north. How long after the second car starts does it overtake the first car?

Accepted Answer

A)   21 s 
B)   24 s 
C)   12 s 
D)   19 s 
A)   21 s 
B)   24 s 
C)   12 s 
D)   19 s

Question 15

A resistor and an inductor are connected in series to a battery. The time constant for the circuit represents the time required for the current to reach

Accepted Answer

A)  25% of the maximum current. 
B)  100% of the maximum current. 
C)  63% of the maximum current. 
D)  37% of the maximum current. 
E)  75% of the maximum current. 
A)  25% of the maximum current. 
B)  100% of the maximum current. 
C)  63% of the maximum current. 
D)  37% of the maximum current. 
E)  75% of the maximum current.

Question 16

A ball is thrown straight up with a speed of 36 m/s. How long does it take to return to its starting point, assuming negligible air resistance?

Accepted Answer

A)  7.3 s 
B)  3.7 s 
C)  15 s 
D)  11 s 
A)  7.3 s 
B)  3.7 s 
C)  15 s 
D)  11 s

Question 17

When different resistors are connected in parallel across an ideal battery, we can be certain that

Accepted Answer

A)  the power dissipated in each is the same. 
B)  the potential difference across each is the same. 
C)  their equivalent resistance is equal to the average of the individual resistances. 
D)  their equivalent resistance is greater than the resistance of any one of the individual resistances. 
E)  the same current flows in each one. 
A)  the power dissipated in each is the same. 
B)  the potential difference across each is the same. 
C)  their equivalent resistance is equal to the average of the individual resistances. 
D)  their equivalent resistance is greater than the resistance of any one of the individual resistances. 
E)  the same current flows in each one.

Question 18

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the average velocity of the particle between t = 1.0 s and t = 4.0 s?

Accepted Answer

A)  0.25 m/s 
B)  1.0 m/s 
C)  0.67 m/s 
D)  1.3 m/s 
E)  0.50 m/s 
A)  0.25 m/s 
B)  1.0 m/s 
C)  0.67 m/s 
D)  1.3 m/s 
E)  0.50 m/s

Question 19

The primary of an ideal transformer has 100 turns and its secondary has 200 turns. Neglecting frictional losses, if the power input to the primary is 100 W, we can expect the power output of the
Secondary to be

Accepted Answer

A)  50 W. 
B)  200 W. 
C)  100 W. 
D)  none of the given answers. 
A)  50 W. 
B)  200 W. 
C)  100 W. 
D)  none of the given answers.

Question 20

Two taut strings of identical mass per unit length are stretched with the same tension with their ends fixed, but one string is 0.330 cm longer than the other. Waves on these strings propagate at
34)0 m/s.The fundamental frequency of the shorter string is 258 Hz. What is the beat frequency
When each string is vibrating at its fundamental frequency?

Accepted Answer

A)  11.3 Hz 
B)  12.3 Hz 
C)  9.00 Hz 
D)  12.0 Hz 
E)  12.7 Hz 
A)  11.3 Hz 
B)  12.3 Hz 
C)  9.00 Hz 
D)  12.0 Hz 
E)  12.7 Hz

Exam 2: Describing Motion: Kinematics in One Dimension

A 100-W resistance heater is connected to a 110-V dc source. What current flows through the heater?

Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential at a given point in the field is 80 V, what is the potential at a point 1.0 m directly south of That point?

Which of the following graphs represent an object at rest? (There could be more than one correct choice.) (a) (b) (c) (d) (e)

If, with steady state heat flow established, you double the thickness of a wall built from solid uniform material, the rate of heat loss for a given temperature difference across the thickness will

An airplane needs to reach a forward velocity of 203.0 km/h to take off. On a 2000-m runway, what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?

A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest the period of the pendulum is T. How does the period of the pendulum change when the elevator Moves downward with constant acceleration?

If the result of your calculation of a quantity has SI units kg ·

If the length and diameter of a wire of circular cross section are both tripled, the resistance will be

Consider two pipes of the same length: one pipe is open at both ends and the other pipe is closed on one end but open at the other end. If the fundamental frequency of the totally open pipe is 300 Hz, what is the fundamental frequency of the other pipe?

A light-year is the distance that light travels in one year. The speed of light is 3.00 × 108 m/s. How many miles are there in one light-year? (1 mi = 1609 m, 1 y = 365 d)

Which of the following graphs represent an object having zero acceleration?

A car starts from rest and accelerates uniformly at toward the north. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at toward the north. How long after the second car starts does it overtake the first car?

A resistor and an inductor are connected in series to a battery. The time constant for the circuit represents the time required for the current to reach

A ball is thrown straight up with a speed of 36 m/s. How long does it take to return to its starting point, assuming negligible air resistance?

When different resistors are connected in parallel across an ideal battery, we can be certain that

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the average velocity of the particle between t = 1.0 s and t = 4.0 s?

The primary of an ideal transformer has 100 turns and its secondary has 200 turns. Neglecting frictional losses, if the power input to the primary is 100 W, we can expect the power output of the Secondary to be

Introduction, Measurement, Estimating

Kinematics in Two Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Circular Motion; Gravitation

Work and Energy

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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

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Nuclear Energy; Effects and Uses of Radiation

Elementary Particles

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