Sagot :
Answer:
The answer is "frequency"
Explanation:
The two most importabt physical qualities of sound are frequency and amplitude.Frequency is the speed at which a sound wave vubrates,and it determines the pitch of a noise.
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"frequency"
frequency
The frequency of a sound wave is what your ear understands as pitch. A higher frequency sound has a higher pitch, and a lower frequency sound has a lower pitch. In Figure 10.2 sound A has a higher pitch than sound B