Question 1

The flash from a camera is an example of a continuous wave.

Accepted Answer

A) True 
 B)False

Question 2

What frequency of sound traveling in air at 40 oC has a wavelength of 0.50 m?

Accepted Answer

A) 20 Hz 
B) 344.7 Hz 
C) 502.9 Hz 
D) 711.2 Hz 
A) 20 Hz 
B) 344.7 Hz 
C) 502.9 Hz 
D) 711.2 Hz

Question 3

The number of cycles of a wave passing a point per unit time is the wave's

Accepted Answer

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

Question 4

The number of cycles of a wave passing a point per unit time is the wave's period.

Accepted Answer

A) True 
 B)False

Question 5

You shout at a cliff,and hear your echo in 2 seconds.If the speed of sound in the air is 340 m/s,the distance of the cliff from you is

Accepted Answer

A) 85 m. 
B) 170 m. 
C) 340 m. 
D) 680 m. 
E) none of the above. 
A) 85 m. 
B) 170 m. 
C) 340 m. 
D) 680 m. 
E) none of the above.

Question 6

When a force F stretches a rope of mass per unit length ρ,the velocity of a wave in the rope is given by  
-You pull on a rope with a certain force,and a wave travels in the rope with a certain velocity.If you double your force,the velocity of a wave in the rope is now ____________ the original velocity.

Accepted Answer

A) 1/2 
B)   
Times 
C) the same as 
D)   
Times 
E) 2 times 
A) 1/2 
B)   
Times 
C) the same as 
D)   
Times 
E) 2 times

Question 7

An example of a transverse wave is a

Accepted Answer

A) sound wave in air. 
B) wave on a rope. 
C) water wave. 
D) sound wave in a metal bar. 
E) none of the above 
A) sound wave in air. 
B) wave on a rope. 
C) water wave. 
D) sound wave in a metal bar. 
E) none of the above

Question 8

Match each item with the correct statement below.
-occurs when two waves arrive in phase

Accepted Answer

A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength 
A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength

Question 9

Two uses of ultrasound are navigation by bats and controlling insects.

Accepted Answer

A) True 
 B)False

Question 10

Match each item with the correct statement below.
-multiple,random reflections of sound inside a room

Accepted Answer

A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength 
A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength

Question 11

​Match each item with the correct statement below.
-occurs when sound passes through an open window

Accepted Answer

A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength 
A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength

Question 12

When two identical waves undergo _______________ interference,the net amplitude is zero.

Accepted Answer

The answer of When two identical waves undergo _______________ interference,the...

Question 13

A zero decibel sound level has zero amplitude.

Accepted Answer

A) True 
 B)False

Question 14

A sound level of 80 dB has twenty times the amplitude of a 60 dB sound.

Accepted Answer

A) True 
 B)False

Question 15

You drop a rock in a pond,and the water waves travel away from the rock with a certain speed.You drop a heavier rock in the water.The speed of the waves in the water from the heavier rock

Accepted Answer

A) remains unchanged. 
B) increases. 
C) decreases. 
D) cannot be determined. 
A) remains unchanged. 
B) increases. 
C) decreases. 
D) cannot be determined.

Question 16

In order for two waves to interfere completely destructively,they must

Accepted Answer

A) have the same amplitude. 
B) be exactly out of phase. 
C) one wave's peak must align with the other's valley. 
D) be transverse waves. 
E) all of the above 
A) have the same amplitude. 
B) be exactly out of phase. 
C) one wave's peak must align with the other's valley. 
D) be transverse waves. 
E) all of the above

Question 17

​Match each item with the correct statement below.
-sound in air is an example of this type of wave

Accepted Answer

A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength 
A) amplitude 
B) constructive interference 
C) destructive interference 
D) diffraction 
E) Doppler effect
F)frequency
G)longitudinal
H)pitch
I)ray
J)reflection
K)reverberation
L)sound level
M)transverse
N)ultrasound
O)waveform
P)wavelength

Question 18

You are on a boat in a fog and know there are cliffs ahead of you somewhere,but you cannot see them.You use your fog horn to send out a blast of sound (assume the temperature of the air is 20 oC)and the time it takes for the sound to return to you is 20.0 s.How far away are the cliffs (in metric units)? Hint: Be careful and think about the physics of the problem.You may want to make a sketch of the situation to help you determine the answer.

Accepted Answer

A) 1798 m 
B) 3444 m 
C) 3596 m 
D) 7192 m 
A) 1798 m 
B) 3444 m 
C) 3596 m 
D) 7192 m

Question 19

The wavelength of a wave divided by the frequency of the wave is the wave's speed.

Accepted Answer

A) True 
 B)False

Question 20

Two examples of a longitudinal wave are __________ and __________.

Accepted Answer

sound wave

The flash from a camera is an example of a continuous wave.

What frequency of sound traveling in air at 40 ^oC has a wavelength of 0.50 m?

The number of cycles of a wave passing a point per unit time is the wave's

The number of cycles of a wave passing a point per unit time is the wave's period.

You shout at a cliff,and hear your echo in 2 seconds.If the speed of sound in the air is 340 m/s,the distance of the cliff from you is

An example of a transverse wave is a

Match each item with the correct statement below. -occurs when two waves arrive in phase

Two uses of ultrasound are navigation by bats and controlling insects.

Match each item with the correct statement below. -multiple,random reflections of sound inside a room

Match each item with the correct statement below. -occurs when sound passes through an open window

When two identical waves undergo _______________ interference,the net amplitude is zero.

A zero decibel sound level has zero amplitude.

A sound level of 80 dB has twenty times the amplitude of a 60 dB sound.

You drop a rock in a pond,and the water waves travel away from the rock with a certain speed.You drop a heavier rock in the water.The speed of the waves in the water from the heavier rock

In order for two waves to interfere completely destructively,they must

Match each item with the correct statement below. -sound in air is an example of this type of wave

The wavelength of a wave divided by the frequency of the wave is the wave's speed.

Two examples of a longitudinal wave are and .

The Study of Motion

Newtons Laws

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Electricity

Electromagnetism and Em Waves

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Exam 6: Waves and Sound

The flash from a camera is an example of a continuous wave.

What frequency of sound traveling in air at 40 oC has a wavelength of 0.50 m?

The number of cycles of a wave passing a point per unit time is the wave's

The number of cycles of a wave passing a point per unit time is the wave's period.

You shout at a cliff,and hear your echo in 2 seconds.If the speed of sound in the air is 340 m/s,the distance of the cliff from you is

An example of a transverse wave is a

Match each item with the correct statement below. -occurs when two waves arrive in phase

Two uses of ultrasound are navigation by bats and controlling insects.

Match each item with the correct statement below. -multiple,random reflections of sound inside a room

​Match each item with the correct statement below. -occurs when sound passes through an open window

When two identical waves undergo _______________ interference,the net amplitude is zero.

A zero decibel sound level has zero amplitude.

A sound level of 80 dB has twenty times the amplitude of a 60 dB sound.

You drop a rock in a pond,and the water waves travel away from the rock with a certain speed.You drop a heavier rock in the water.The speed of the waves in the water from the heavier rock

In order for two waves to interfere completely destructively,they must

​Match each item with the correct statement below. -sound in air is an example of this type of wave

The wavelength of a wave divided by the frequency of the wave is the wave's speed.

Two examples of a longitudinal wave are __________ and __________.

The Study of Motion

Newtons Laws

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Electricity

Electromagnetism and Em Waves

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

What frequency of sound traveling in air at 40 ^oC has a wavelength of 0.50 m?

Match each item with the correct statement below. -occurs when sound passes through an open window

Match each item with the correct statement below. -sound in air is an example of this type of wave

Two examples of a longitudinal wave are and .