Sixty complete waves pass a particular point in 4s. lf the distance between three successive troughs of the waves is 15m, calculate the speed of the waves,
-
A.
300.0ms-1 -
B.
225.0ms-1 -
C.
112.5ms-1 -
D.
75.0ms-1 -
E.
16.0ms-1
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