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14 July, 00:05

A lifeguard on a beach observes that waves have a speed of 7 m/s and a distance of 4.6m between wave crests. what is the period of the wave motion?

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  1. 14 July, 02:58
    0
    0.657 seconds

    Explanation:

    speed of wave = wavelength / time period

    so

    time period = wavelength / speed

    = 4.6/7

    =0.657 sec
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