Question 1

Wave interference occurs for

Accepted Answer

A) sound waves. 
B) light waves. 
C) water waves. 
D) all of the above 
E) none of the above 
A) sound waves. 
B) light waves. 
C) water waves. 
D) all of the above 
E) none of the above

Question 2

A wiggle in both space and time is a

Accepted Answer

A) vibration. 
B) wave. 
C) both of these 
D) neither of these 
A) vibration. 
B) wave. 
C) both of these 
D) neither of these

Question 3

A pendulum clock at high altitudes runs

Accepted Answer

A) fast. 
B) slow. 
C) normally as it does at sea level. 
A) fast. 
B) slow. 
C) normally as it does at sea level.

Question 4

A 60-vibration-per-second wave travels 30 meters in 1 second. Its frequency is

Accepted Answer

A) 30 hertz and it travels at 60 m/s. 
B) 60 hertz and it travels at 30 m/s. 
C) 1800 hertz and it travels at 2 m/s. 
D) none of the above 
A) 30 hertz and it travels at 60 m/s. 
B) 60 hertz and it travels at 30 m/s. 
C) 1800 hertz and it travels at 2 m/s. 
D) none of the above

Question 5

The number of nodes, including the end points, in a standing wave that is two wavelengths long is

Accepted Answer

A) 1. 
B) 2. 
C) 3. 
D) 4. 
E) none of the above 
A) 1. 
B) 2. 
C) 3. 
D) 4. 
E) none of the above

Question 6

When an elevator is accelerating upward, the frequency of a pendulum inside

Accepted Answer

A) increases. 
B) decreases. 
C) doesn't change. 
A) increases. 
B) decreases. 
C) doesn't change.

Question 7

Which equation is correct for wave speed?

Accepted Answer

A) wave speed = frequency x wavelength 
B) wave speed = (1/period)x wavelength 
C) both of these 
D) neither of these 
A) wave speed = frequency x wavelength 
B) wave speed = (1/period)x wavelength 
C) both of these 
D) neither of these

Question 8

If you double the frequency of a vibrating object, its period

Accepted Answer

A) doubles. 
B) halves. 
C) is quartered. 
A) doubles. 
B) halves. 
C) is quartered.

Question 9

A Doppler effect occurs when a source of sound moves

Accepted Answer

A) towards you. 
B) away from you. 
C) either of these 
D) neither of these 
A) towards you. 
B) away from you. 
C) either of these 
D) neither of these

Question 10

Some of a wave's energy dissipates as heat. In time, this will reduce the wave's

Accepted Answer

A) speed. 
B) wavelength. 
C) amplitude. 
D) frequency. 
E) period. 
A) speed. 
B) wavelength. 
C) amplitude. 
D) frequency. 
E) period.

Question 11

If you quickly run toward the orchestra at a concert, the frequency of the sound you hear will be

Accepted Answer

A) decreased. 
B) increased. 
C) neither of these 
A) decreased. 
B) increased. 
C) neither of these

Question 12

Both a transverse wave and a longitudinal wave have

Accepted Answer

A) amplitude. 
B) frequency. 
C) wavelength. 
D) speed. 
E) all of the above 
A) amplitude. 
B) frequency. 
C) wavelength. 
D) speed. 
E) all of the above

Question 13

The amplitude of a wave is 1 meter. The crest-to-trough distance of the wave is

Accepted Answer

A) 0.5 m. 
B) 1 m. 
C) 2 m. 
D) none of the above 
A) 0.5 m. 
B) 1 m. 
C) 2 m. 
D) none of the above

Question 14

Repeatedly dipping your fingers into water produces waves. Increasing the frequency of dipping produces waves that are

Accepted Answer

A) shorter. 
B) longer. 
C) the same. 
A) shorter. 
B) longer. 
C) the same.

Question 15

The frequency of a certain wave is 10 hertz and its period is

Accepted Answer

A) 0.1 second. 
B) 10 seconds. 
C) 100 seconds. 
D) none of the above 
A) 0.1 second. 
B) 10 seconds. 
C) 100 seconds. 
D) none of the above

Question 16

The frequency of a simple pendulum does NOT depend on

Accepted Answer

A) its mass. 
B) its length. 
C) the acceleration due to gravity. 
D) all of the above 
E) none of the above 
A) its mass. 
B) its length. 
C) the acceleration due to gravity. 
D) all of the above 
E) none of the above

Question 17

A bow wave is produced when a speed boat moves

Accepted Answer

A) nearly as fast as the waves it produces. 
B) as fast as the waves it produces. 
C) faster than the waves it produces. 
D) none of the above 
A) nearly as fast as the waves it produces. 
B) as fast as the waves it produces. 
C) faster than the waves it produces. 
D) none of the above

Question 18

A 101-MHz radio wave has vibrations per second of

Accepted Answer

A) less than 101,000,000. 
B) 101,000,000. 
C) more than 101,000,000. 
A) less than 101,000,000. 
B) 101,000,000. 
C) more than 101,000,000.

Question 19

Which of these is affected by mass?

Accepted Answer

A) a freely-falling object 
B) an object sliding down a friction-free plane 
C) a pendulum 
D) all of the above 
E) none of the above 
A) a freely-falling object 
B) an object sliding down a friction-free plane 
C) a pendulum 
D) all of the above 
E) none of the above

Question 20

The period of the second hand on a clock is

Accepted Answer

A) 1 second. 
B) 1/60 second. 
C) 60 seconds. 
D) 3600 seconds. 
E) 12 hours. 
A) 1 second. 
B) 1/60 second. 
C) 60 seconds. 
D) 3600 seconds. 
E) 12 hours.

Exam 19: Vibrations and Waves

Wave interference occurs for

A wiggle in both space and time is a

A pendulum clock at high altitudes runs

A 60-vibration-per-second wave travels 30 meters in 1 second. Its frequency is

The number of nodes, including the end points, in a standing wave that is two wavelengths long is

When an elevator is accelerating upward, the frequency of a pendulum inside

Which equation is correct for wave speed?

If you double the frequency of a vibrating object, its period

A Doppler effect occurs when a source of sound moves

Some of a wave's energy dissipates as heat. In time, this will reduce the wave's

If you quickly run toward the orchestra at a concert, the frequency of the sound you hear will be

Both a transverse wave and a longitudinal wave have

The amplitude of a wave is 1 meter. The crest-to-trough distance of the wave is

Repeatedly dipping your fingers into water produces waves. Increasing the frequency of dipping produces waves that are

The frequency of a certain wave is 10 hertz and its period is

The frequency of a simple pendulum does NOT depend on

A bow wave is produced when a speed boat moves

A 101-MHz radio wave has vibrations per second of

Which of these is affected by mass?

The period of the second hand on a clock is

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