Question 1

A sonic boom is produced by an airplane flying at a speed

Accepted Answer

A) just below the speed of sound. 
B) equal to the speed of sound. 
C) greater than the speed of sound. 
D) all of the above 
E) none of the above 
A) just below the speed of sound. 
B) equal to the speed of sound. 
C) greater than the speed of sound. 
D) all of the above 
E) none of the above

Question 2

The source of a sonic boom

Accepted Answer

A) must be a sound emitter. 
B) may or may not be a sound emitter. 
C) is not a sound emitter. 
D) none of the above 
A) must be a sound emitter. 
B) may or may not be a sound emitter. 
C) is not a sound emitter. 
D) none of the above

Question 3

To say that one wave is out of phase with another is to say that the waves are

Accepted Answer

A) of different amplitudes. 
B) of different frequencies. 
C) of different wavelengths. 
D) out of step. 
E) all of the above 
A) of different amplitudes. 
B) of different frequencies. 
C) of different wavelengths. 
D) out of step. 
E) all of the above

Question 4

A skipper on a boat sees wave crests passing the anchor chain every 5 seconds and estimates the distance between crests is 15 m. What is the speed of the water waves?

Accepted Answer

A) 3 m/s 
B) 5 m/s 
C) 15 m/s 
D) need more information 
A) 3 m/s 
B) 5 m/s 
C) 15 m/s 
D) need more information

Question 5

All waves have in common a

Accepted Answer

A) pattern. 
B) vibrating source. 
C) variable regions of high and low pressure. 
D) none of the above 
A) pattern. 
B) vibrating source. 
C) variable regions of high and low pressure. 
D) none of the above

Question 6

An aircraft that flies faster than the speed of sound is said to be

Accepted Answer

A) subsonic. 
B) supersonic. 
C) impossible. 
D) none of the above 
A) subsonic. 
B) supersonic. 
C) impossible. 
D) none of the above

Question 7

Water waves pass by a piece of cork floating on the water that bobs up and down one complete cycle each second. The waves are 2 meters long. What is the speed of the wave?

Accepted Answer

A) 0.25 m/s 
B) 0.50 m/s 
C) 1.0 m/s 
D) 2 m/s 
E) 4 m/s 
A) 0.25 m/s 
B) 0.50 m/s 
C) 1.0 m/s 
D) 2 m/s 
E) 4 m/s

Question 8

What is the wave speed of a wave traveling an average distance of 6 meters in one second?

Accepted Answer

A) less than 0.2 m/s 
B) 1 m/s 
C) 3 m/s 
D) 6 m/s 
E) more than 6 m/s 
A) less than 0.2 m/s 
B) 1 m/s 
C) 3 m/s 
D) 6 m/s 
E) more than 6 m/s

Question 9

A standing wave is likely produced when

Accepted Answer

A) two waves overlap. 
B) a wave reflects upon itself. 
C) the speed of the wave is zero or near zero. 
D) the amplitude of a wave exceeds its wavelength. 
A) two waves overlap. 
B) a wave reflects upon itself. 
C) the speed of the wave is zero or near zero. 
D) the amplitude of a wave exceeds its wavelength.

Question 10

A wiggle in 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 11

Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is

Accepted Answer

A) 0.3 m. 
B) 3.0 m. 
C) 30 m. 
D) 300 m. 
E) none of the above 
A) 0.3 m. 
B) 3.0 m. 
C) 30 m. 
D) 300 m. 
E) none of the above

Question 12

A red shift for light indicates that the light source is moving

Accepted Answer

A) toward you. 
B) away from you. 
C) both of these 
D) neither of these 
A) toward you. 
B) away from you. 
C) both of these 
D) neither of these

Question 13

The vibrations of a transverse wave move

Accepted Answer

A) along the direction of wave travel. 
B) at right angles to the direction of wave travel. 
C) that changes with speed. 
A) along the direction of wave travel. 
B) at right angles to the direction of wave travel. 
C) that changes with speed.

Question 14

Which of these is a longitudinal wave?

Accepted Answer

A) sound 
B) light 
C) radio 
D) all of the above 
E) none of the above 
A) sound 
B) light 
C) radio 
D) all of the above 
E) none of the above

Question 15

In the Doppler effect it is important to distinguish between

Accepted Answer

A) frequency and speed. 
B) speed and velocity. 
C) speed and acceleration. 
D) distance and displacement. 
A) frequency and speed. 
B) speed and velocity. 
C) speed and acceleration. 
D) distance and displacement.

Question 16

A fishing-boat captain returns to port saying, "It's rough out there with waves that are 4 meters high." He is probably talking of waves of amplitude

Accepted Answer

A) 1 m. 
B) 2 m. 
C) 3 m. 
D) 4 m. 
A) 1 m. 
B) 2 m. 
C) 3 m. 
D) 4 m.

Question 17

The vibrations of a longitudinal wave move

Accepted Answer

A) along the direction of wave travel. 
B) at right angles to the direction of wave travel. 
C) that changes with speed. 
A) along the direction of wave travel. 
B) at right angles to the direction of wave travel. 
C) that changes with speed.

Question 18

A jet traveling at 1500 km/h passes overhead. The sonic boom produced is heard by

Accepted Answer

A) a listener on the ground. 
B) the jet pilot. 
C) both of these 
D) neither of these 
A) a listener on the ground. 
B) the jet pilot. 
C) both of these 
D) neither of these

Question 19

The source of a sonic boom may be a

Accepted Answer

A) whip. 
B) a high-speed bullet. 
C) both of these 
D) neither of these 
A) whip. 
B) a high-speed bullet. 
C) both of these 
D) neither of these

Question 20

The pendulum with the greatest frequency is one with the

Accepted Answer

A) shortest length. 
B) longest length. 
C) neither of these 
A) shortest length. 
B) longest length. 
C) neither of these

Exam 19: Vibrations and Waves

A sonic boom is produced by an airplane flying at a speed

The source of a sonic boom

To say that one wave is out of phase with another is to say that the waves are

A skipper on a boat sees wave crests passing the anchor chain every 5 seconds and estimates the distance between crests is 15 m. What is the speed of the water waves?

All waves have in common a

An aircraft that flies faster than the speed of sound is said to be

Water waves pass by a piece of cork floating on the water that bobs up and down one complete cycle each second. The waves are 2 meters long. What is the speed of the wave?

What is the wave speed of a wave traveling an average distance of 6 meters in one second?

A standing wave is likely produced when

A wiggle in time is a

Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is

A red shift for light indicates that the light source is moving

The vibrations of a transverse wave move

Which of these is a longitudinal wave?

In the Doppler effect it is important to distinguish between

A fishing-boat captain returns to port saying, "It's rough out there with waves that are 4 meters high." He is probably talking of waves of amplitude

The vibrations of a longitudinal wave move

A jet traveling at 1500 km/h passes overhead. The sonic boom produced is heard by

The source of a sonic boom may be a

The pendulum with the greatest frequency is one with the

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