Question

A sonar device fitted in a submarine receive an echo 4s later the signal is transmitted towards another submarine 3060m away find the speed of sound in water

Answer 1

Speed=distance/time

=3060m/4s

=765m/s

Answer 2

The speed of sound in water is 1530 m/s.

Explanation:

Given that, a sonar device fitted in a submarine receive an echo 4 s later the signal is transmitted towards another submarine 3060 m away. We need to find the speed of the water.

When sonar receives an echo, the total distance covered is 2d. We know that the speed is given by :

$v=\dfrac{d}{t}\\\\v=\dfrac{2d}{t}\\\\v=\dfrac{2\times 3060\ m}{4\ s}\\\\v=1530\ m/s$

So, the speed of sound in water is 1530 m/s. Hence, this is the required solution.

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