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21 June, 19:28

A sound wave has a frequency of 440 Hz. What is the period of this sound

wave?

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  1. 21 June, 21:43
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    answer = 2.27 millisecond

    Explanation:

    Pitch of middle A corresponds to a frequency of 440 oscillation in 1 second.

    we can write: A 440 = oscillation/sec

    440/sec = 440Hz

    1 / (440/sec) = (1/440) sec = 0.00227sec

    = 2.27milliseconds
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