Question

A trackman striking the rail track made of steel with the hammer with frequency 2.50 Hz and another trackman at the distance 1 km tries to listen the sound by keeping his ear on the track. Calculate the time taken to hear the sound by second trackman after the first strike?

Answer 1

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

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

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

Where, d = distance

v = speed

t = time

Put the value into the formula

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

$t=2.9\ sec$

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

Answer 2

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=

t

d

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

v

d

Where, d = distance

v = speed

t = time

Put the value into the formula

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

343

1000

t=2.9\ sect=2.9 sec

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