Question

A sound wave has a frequency of 2KHZ and wave length 35 cm. How long Will it take to travel 1.5 km?

Answer 1

2KHZ= 2,000 HZ
Wave length=35cm =0.35m

Velocity of sound wave=Frequency×wave length
Velocity=2,000×0.35
Velocity= 700m/s

Displacement=1.5km=1500m


Velocity = displacement/time
700= 1500/time
time=1500/700
Time=15/7
Time=2.14 s HOPE IT HELPS YOU!