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12 May, 21:36

A wave passes the dock every 5 seconds and reaches a height of. 5 meters and a wavelength of 2 meters. find the wavespeed

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  1. 12 May, 21:53
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    We don't care about the height of the wave.

    We're only interested in its period and wavelength, because

    wave speed is the product of frequency and wavelength.

    Period = 5 seconds

    Frequency = 1/period = 1/5sec = 0.2/sec = 0.2 Hz.

    Speed

    = (frequency) x (wavelength)

    = (0.2 Hz) x (2 m) = 0.4 m/s.
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