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5 July, 02:44

What is the period of a soundwave whose wavelength is 20.0 m? Use values from the book and show ALL of your work.

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  1. 5 July, 02:48
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    In one period of a wave, one full cycle (peak through valley and back to peak) passes by. That means that the wave has moved by one wavelength. Wavelength is related to period by the expression:

    speed = wavelength / period

    If we are given the speed, then we can easily calculate the period at the wavelength of 20 m.

    Period = 20 / speed
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