A sound wave has a frequency of 2khz and wavelenght of 45cm it takes 4sec to travel calculate the distance it travel in 4sec
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3
speed = frequency × wavelength
v= 2*1000 × 45/100
v= 900 m/s
distance= speed × time
d= 900 × 4 = 3600 m = 3.6 km
v= 2*1000 × 45/100
v= 900 m/s
distance= speed × time
d= 900 × 4 = 3600 m = 3.6 km
Answered by
2
Given: frequency =2kHz=2000Hz
wavelength:45cm=0.45cm
V=f×wavelength
V=2000×0.45
V=900m/s
V=d/t
900=d/4
900×4=d
3600m=d
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