A sound wave travels through air such that three successive compressions occur at…

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

Problem

A sound wave travels through air such that three successive compressions occur at positions

x = 0.00\,\text{m},\; 0.85\,\text{m}

and

1.70\,\text{m}

. At a particular location, the displacement–time graph shows

8

complete oscillations in

0.020\,\text{s}

. Determine the speed of the wave. (a)

170\,\text{m/s}

(b)

340\,\text{m/s}

(c)

680\,\text{m/s}

(d)

40\,\text{m/s}