Question

A sound wave has a frequency of 2kHz and wavelength of 45cm,it takes 4 second to travel. Calculate the distance it travels, Please show the claculations.

Answer 1

Given: frequency =2kHz=2000Hz
wavelength:45cm=0.45cm
V=f×wavelength
V=2000×0.45
V=9000m/s

V=d/t
9000=d/4
9000×4=d
36000m=d

Answer 2

speed = frequency × wavelength

v= 2*1000 × 45/100

v= 900 m/s

distance= speed × time

d= 900 × 4 = 3600 m = 3.6 kmspeed = frequency × wavelength

v= 2*1000 × 45/100

v= 900 m/s

distance= speed × time

d= 900 × 4 = 3600 m = 3.6 km

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