A sound wave has a time period of and a wavelength of

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

Problem

A sound wave has a time period of

2.5\,\text{ms}

and a wavelength of

85\,\text{cm}

. Find its speed. (a)

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

(b)

3.4\times10^{3}\,\text{m s}^{-1}

(c)

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

(d)

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