Question

A sonar device on a submarine sends out a signal and receives an echo 5s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.

Answer 1

Time taken by submarine to sends out a signal and receives an echo,
t = \(\frac{5}{2}\) = 2.5s.
distance of the object from the submarine = 3625 m.
∴ Speed of sound in water,