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4 June, 08:36

Assume a change at the source of sound reduces the wavelength of a sound wave in air by a factor of 15. (i) what happens to its frequency?

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  1. 4 June, 10:55
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    Frequency = wave speed / wavelength

    If f = wave speed / 1/15*wavelength

    then

    f=15 * wave speed / wavelength

    frequency is increased by a factor of 15
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