Question

A sound wave has a frequency 2Hz and wavelength 40cm . How long will it take to travel 1.6 km

Answer 1

Given:

frequency = 2 Hz

wavelength = 40 cm = 0.40 m

Distance = 1.6 km = 1.6 x 10^3 m

We have to find,

time = ??

Solution:

Velocity = frequency x Wavelength

Velocity = 2 x 0.40

Velocity = 0.8 m/s

Now,we know that,

time = distance/velocity

time = 1.6 x 10^3/0.8

time = 2 sec


Therefore, the sound will take 2 sec to travel 1.6 km.


Thanks...

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