Physics, 14.10.2019 21:00 ghernadez

One thing that stringed, wind, and percussion instruments have in common in regard to the sounds they produce is that
a. the frequency is always a direct result of adjusting the length of the instrument.
b. the instruments are struck by tools to produce vibrations and sounds.
c. the sound originates from a vibration.
d. all of the instruments can be easily adjusted to produce a tone with a certain definite pitch.

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One thing that stringed, wind, and percussion instruments have in common in regard to the sounds the...