1. when playing the piano, each key has a specific number of times it vibrates. the number of string vibrations correspond to changing what quality of sound? loudness
pitch
amplitude
range
2. what is the lowest level of sound that can be detected by human hearing?
0 hz
10 hz
20 hz
100 hz
3.
the sound waves used for sonar are
infrasound
ultrasound
audible
4. at close range, a ship's foghorn or the air horn on a truck will probably have a , low, medium) decibel reading.
5. a loud explosion will produce
a high-amplitude sound wave
a low-amplitude sound wave
a sound wave with a single frequency
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1. when playing the piano, each key has a specific number of times it vibrates. the number of string...
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