Question

A trackmna stiking rail track of steel with hammer with frequency 2.5 hz .Calculate time ten to hear the sound by second trackman at distance 1km
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Answer 1

Answer:

Given that,

Frequency = 2.50 Hz

Distance = 1 km

We know that,

Speed of sound is 343 m/s.

We need to calculate the time taken to hear the sound by second track man

Using formula of speed

v=\dfrac{d}{t}v= td

t=\dfrac{d}{v}t= vd

Where, d = distance

v = speed

t = time

Put the value into the formula

t=\dfrac{1000}{343}t= 3431000

t=2.9\ sect=2.9 sec

Hence, The time taken to hear the sound by second track man is 2.9 sec.

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