Chapter 19- physics
A 101-MHz radio wave has vibrations per second of more than 101,000,000. 101,000,000. less than 101,000,000.
101,000,000.
The amplitude of a wave is 1 meter. The crest-to-trough distance of the wave is 2 m. 1 m. 0.5 m. none of the above
2
A water wave passes by a floating leaf that is made to oscillate up and down two complete cycles each second, which means that the wave's frequency is 1 Hz. 0.5 Hz. 6 Hz. 2 Hz. 3 Hz.
2 HZ
An object that completes 20 vibrations in 10 seconds has a frequency of 1 hertz. 0.5 hertz. 200 hertz. 2 hertz.
2 hertz
A floating leaf oscillates up and down two complete cycles in one second as a 10-meter long water wave passes by. What is the wave's speed? 40 m/s 20 m/s 10 m/s more than 40 m/s 2 m/s
20
The period of the second hand on a clock is 3600 seconds. 12 hours. 1 second. 1/60 second. 60 seconds.
60 seconds
The number of nodes, including the end points, in a standing wave that is three wavelengths long is 6. 4. 5. 7. none of the above
7
Both a transverse wave and a longitudinal wave have speed. frequency. wavelength. amplitude. all of the above
All of the above
The Doppler effect is characteristic of sound waves. water waves. light waves. all of the above none of the above
All the above
A red shift for light indicates that the light source is moving toward you. away from you. both of these neither of these
Away from you
If you quickly run away from the orchestra at a concert, the frequency of the sound you hear will be increased. decreased. neither of these.
Decreased
As a supersonic aircraft increases in speed, the angle of its V-shaped shock wave becomes wider. narrower. both of these neither of these
Narrower
Repeatedly dipping your fingers into water produces waves. Increasing the frequency of dipping produces waves that are longer. shorter. the same.
Shorter
A jet traveling at 1500 km/h passes overhead. The sonic boom produced is heard by the jet pilot. a listener on the ground. both of these neither of these
a listener on the ground.
Interference is a property of water waves. sound waves. light waves. all of the above none of the above
all of the above
A less intense sonic boom at ground level can occur if the aircraft is more streamlined. is smaller. flies higher. all of the above none of the above
all the above
Some of a wave's energy dissipates as heat. In time, this will reduce the wave's period. wavelength. amplitude. speed. frequency.
amplitude
The vibrations of a transverse wave move at right angles to the direction of wave travel. that changes with speed. along the direction of wave travel.
at right angles to the direction of wave travel.
The vibrations of a transverse wave move at right angles to the direction of wave travel. that changes with speed. along the direction of wave travel.
at right angles to the direction of wave travel.
Which equation is correct for wave speed? wave speed = (1/period) x wavelength wave speed = frequency x wavelength both of these neither of these
both
The source of a sonic boom may be a whip. a high-speed bullet. both of these neither of these
bullet
A bow wave is produced when a speed boat moves as fast as the waves it produces. faster than the waves it produces. nearly as fast as the waves it produces. none of the above
faster than the waves it produces.
In the Doppler effect it is important to distinguish between distance and displacement. frequency and speed. speed and acceleration. speed and velocity.
frequency and speed.
A sonic boom is produced by an airplane flying at a speed just below the speed of sound. greater than the speed of sound. equal to the speed of sound. all of the above none of the above
greater than the speed of sound.
If you double the frequency of a vibrating object, its period doubles. is quartered. halves.
halves
The stride of a horse would be quicker if more mass in its legs were concentrated in the upper part, nearer the horse's body. uniformly all along its legs. towards its feet. halfway up its legs. none of the above
in the upper part, nearer the horse's body.
The frequency of a simple pendulum does NOT depend on the acceleration due to gravity. its mass. its length. all of the above none of the above
its mass
The source of a sonic boom must be a sound emitter. is not a sound emitter. may or may not be a sound emitter. none of the above
may or may not be a sound emitter.
As a supersonic aircraft increases in speed, the angle of its V-shaped shock wave becomes wider. narrower. both of these neither of these
narrower
A wave travels an average distance of one meter in one second with a frequency of 1 hertz. Its amplitude is 1 meter. more than 1 meter. less than 1 meter. need more information
need more info
A wave travels an average distance of one meter in one second with a frequency of 1 hertz. Its amplitude is You Answered 1 meter. more than 1 meter. less than 1 meter. need more information
need more info
An object that completes 100 vibrations in 5 seconds has a period of 0.5 second. 2 seconds. 1 second. none of the above
none of the above
The distance traveled by a wave during a single period is one wavelength. two wavelengths. one-half wavelength. none of the above
one
Which of these is a transverse wave? a Slinky shaken to and fro. a sound wave a radio wave all of the above none of the above
radio wave
Repeatedly dipping your fingers into water produces waves. Increasing the frequency of dipping produces waves that are longer. shorter. the same.
shorter
A pendulum clock at high altitudes runs normally as it does at sea level. fast. slow.
slow
An aircraft that flies faster than the speed of sound is said to be impossible. supersonic. subsonic. none of the above
supersonic
The compressions and rarefactions in a longitudinal wave travel in opposite directions. the same direction. a vacuum.
the same direction.
All waves have in common a variable regions of high and low pressure. pattern. vibrating source. none of the above
vibrating source
A wiggle in both space and time is a wave. vibration. both of these neither of these
wave
