Physics

A 60-vibration-per-second wave travels 30 meters in 1 second. Its frequency is A) 30 hertz and it travels at 60 m/s B) 60 hertz and it travels 30 m/s C) 1800 hertz and it travels at 2 m/s

60 hertz and it travels at 30 m/s

Wave interference occurs for A) sound waves B) light waves C) water waves D) All of the above are correct E) None of the above are correct

All of the above are correct

As a supersonic craft increases in speed, the angle of its V-shaped shock wave becomes A) wider B) narrower C) neither

Narrower

An object that completes 100 vibrations in 5 seconds has a period of A) 0.5 seconds B) 1 second C) 2 seconds D) None of the above are correct

None of the above are correct

The pendulum with the greatest frequency is the pendulum with the A) shortest period B) shortest length C) shortest period and the shortest length D) shortest amplitude E) greatest amplitude

Shortest period and the shortest length

An aircraft that flies faster than the speed of sound is said to be A) Subsonic B) Supersonic C) Impossible

Supersonic

A common source of wave motion is a... A) wave pattern B) harmonic object C) vibrating object D) region of variable high and low E) none of these

Vibrating object

A wiggle in time is a... A) Vibration B) Wave C) Both D) Neither

Vibration

A standing wave occurs when 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 wave reflects upon itself

The Doppler effect is characteristic of A) water waves B) sound waves C) light waves D) all of the above E) none of the above

all of the above

The vibrations of a longitudinal wave move in a direction... A) along the direction of wave travel B) at right angles to the direction of wave travel C) that changes with speed

along the direction of wave travel

Some of a wave's energy dissipates as heat. In time, this will reduce the wave's A) speed. B) wavelength C) amplitude D) frequency E) period

amplitude

Like a transverse wave, a longitudinal wave has... A) amplitude, frequency, wavelength, and speed B) amplitude, frequency, and wavelength C) amplitude, wavelength, and speed D) amplitude, speed, and frequency E) amplitude, frequency, and speed

amplitude, frequency, wavelength, and speed

A wave barrier is produced when a wave source moves A) nearly as fast as the waves it produces B) as fast as the waves it produces C) faster than the waves it produces

as fast as the waves it produces

The vibrations of a transverse wave move in a direction... A) along the direction of wave travel B) at right angles to the direction of wave travel C) that changes with speed

at right angles to the direction of wave travel

A Doppler effect occurs when a source of sound moves A) towards you B) away from you C) either towards you or away from you D) in a circle around you

either towards you or away from you

A bow wave is produced when a wave source moves A) nearly as fast as the waves it produces B) as fast as the waves it produces C) faster than the waves it produces

faster than the waves it produces

An observer on the ground hears a sonic boom which is created by an airplane flying at a speed 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

greater than the speed of sound

If waves are going by at the same frequency, the wave that has the greatest speed will have the greatest A) amplitude B) length C) frequency D) none of the above

length

The source of a sonic boom A) must itself be an emitter of sound B) may or may not be an emitter of sound C) is not itself an emitter of sound

may or may not be an emitter of sound

A node is a position of A) minimum amplitude B) maximum amplitude C) half amplitude

minimum amplitude

An object that completes 100 vibrations in 5 seconds has a period of A) 0.5 seconds B) 1 second C) 2 seconds D) none of the above

none of the above

If waves are going by at the same speed, the wave with the greatest period of oscillation is the wave that has the greatest A) amplitude B) length C) frequency D) none of the above

none of the above

To say that one wave is out of phase with another is to say that the waves are... A) of different amplitudes B) of different frequencies C) of different wavelengths D) out of step E) all of these

out of step

Which of the following is not a transverse wave? A) sound B) light C) radio D) all of these E) none of these

sound

In a longitudinal wave the compressions and rarefactions travel in... A) the same direction B) opposite directions C) a vacuum

the same direction

The frequency of a simple pendulum depends on A) its mass B) its length C) the acceleration due to gravity D) all of these E) two of these

two of these

A floating leaf oscilllates up and down two complete cycles each second as a water wave passes by. What is the wave's frequency? A) 0.5 hertz B) 1 hertz C) 2 hertz D) 3 hertz E) 6 hertz

2 hertz

An object that completes 20 vibrations in 10 seconds has a frequency of A) 0.5 hertz B) 1 hertz C) 2 hertz D) 200 hertz

2 hertz

An object that completes 20 vibrations in 10 seconds has a frequency of...

2 hertz

A fishing-boat captain returns to port saying, It's rough out there- the waves are 4 meters high." He probably means that the amplitude of the waves are A) 4 m B) 3 m C) 2 m D) 1 m

2 m

A floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave's wavelength is 10 meters. What is the wave's speed? A) 2 m/s B) 10 m/s C) 20 m/s D) 40 m/s E) more than 40 m/s

20 m/s

Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is... A) 0.3 m B) 3.0 m C) 30 m D) 300 m E) none of the above

3.0 m

If the frequency of a certain wave is 10 hertz, its period is A) 0.1 seconds B) 10 seconds C) 100 seconds D) none of the above

0.1 seconds

A weight suspended from a spring bobs up and down over a distance of 1 meter in two seconds. Its frequency is A) 0.5 hertz B) 1 hertz C) 2 hertz D) none of the above

0.5 hertz

An object that completes 10 vibrations in 20 seconds has a frequency of A) 0.5 hertz B) 2 hertz C) 200 hertz

0.5 hertz

How many vibrations per second are associated with a 101-MHz radio wave?

101,000,000