A sound wave is direct at a wall. In 20 seconds, 200 wave cycles hit the wall. what is the frequency and period.

Question

A sound wave is direct at a wall. In 20 seconds, 200 wave cycles hit the wall.
what is the frequency and period.

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Bình An 6 months 2021-07-25T05:15:50+00:00 1 Answers 2 views 0

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    2021-07-25T05:17:47+00:00

    Answer:

    Frequency=10 Hz

    Period=0.1 s

    Explanation:

    Frequency of a wave is the number of complete cycles per unit time. Usually, frequency is cycles per second, with unit as Heartz

    Given cycles of the wave as 200 and time as 20 seconds

    Frequency=200÷20=10 cycles per second

    Therefore, frequency is 10 Hz

    Period is usually the reviprocal of frequency hence reciprocal of 10 Hz will be 1/10=0.1 s

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