A wave travelling along the positive –direction is represented by y(x,t)=0.02 (5x-600 t)

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A wave travelling along the positive

x

–direction is represented by

y(x,t)=0.02\sin(5x-600\pi t),

where

x

is in metres and

t

in seconds. What is the speed of the wave? (a)

6.0\times 10^{1}\,\text{m s}^{-1}

(b)

7.5\times 10^{2}\,\text{m s}^{-1}

(c)

3.8\times 10^{2}\,\text{m s}^{-1}

(d)

1.2\times 10^{2}\,\text{m s}^{-1}