A sound wave has a frequency of 2kHz and wavelength of 45cm , it takes 4 sec to travel. calculate the distance it travels?
 

Nu = 2000
Lamda = 45cm (convert it to m = 0.45m)
Time = 4s
We know that
v = nu/lamda
So ,
=2000 * 0.45
= 900m

We know that
V = s / t
S = v*t
= 900 * 4 = 3600 m .


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