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How is the frequency of a wave measured?

a. the number of complete back and forth vibrations of a particle of the object per unit of time
b. how loud the sound is
c. how many animals can hear the sound
d. how high do the sound waves go

User Maurycyt
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2 Answers

8 votes
It’s A, the actual image of the wave is supposed to show how it bounces back and forth with vibrations.
User Laurens Kling
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7 votes
D. How high do the sound waves go
User Naveen Kumar V
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