Question #1c533

1 Answer
Daniel W.
Jun 21, 2014

#1.14 ms^-1#

The equation needed is #v=fλ#. The wavelength, λ , was given in the question. It is the distance between adjacent crests (aka peaks) or troughs, i.e. 4.0 m.

To calculate the frequency we need to use this equation: #f=1/T#. The value of T is in the question, 3.5 s.
#f=1/T=0.29 Hz#

Now substitute the values into the first equation:
#v=fλ=0.29 * 4.0 = 1.14 ms^-1#

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