Physics

Problem

For a travelling wave on a string, the

y

–

t

graph at a fixed point shows successive maxima at

t = 0

and

t = 0.01\,\text{s}

. The

y

–

x

graph at the same instant displays successive troughs separated by

0.35\,\text{m}

. The wave speed is a)

70\,\text{m\,s}^{-1}

17.5\,\text{m\,s}^{-1}

35\,\text{m\,s}^{-1}

3.5\,\text{m\,s}^{-1}