Question

How long will take it for a sound wave of 25cm. wavelength and 1.5kHz frequency of to travel a distance of 1.5km?

Answer 1

Hello friend
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Given :

Frequency= 1.2kHz

= 1.2 x 10^3Hz.

Wavelength = 25cm

= 0.25m.

Distance= 1.5km.

= 1.5 x 10^3m.

time = ?

We know that,

Velocity of sound = Frequency x Wavelength

v = 1.5 x 10^3 x 0.25

v = 0.375 x 10^3

v = 375m/s.

Now,

Time = Distance/Velocity

t = 1.5 x 10^3/375

t = 1500/375

t = 4s.

I hope this will helps you.

Thanks.