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7 October, 17:22

Scouts at a camp shake the rope bridge they have just crossed and observe the wave crests to be 8.00 m apart. If they shake it the bridge twice per second, what is the propagation speed of the waves?

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  1. 7 October, 18:12
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    distance between two crests = 8 m

    The distance between the two crests is called wavelength.

    So, wavelength, λ = 8 m

    frequency = 2 Hz

    Let v be the velocity of wave.

    v = f x λ

    v = 2 x 8

    v = 16 m/s
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