Question

The velocity of in water is 1500 m/s.
A ships sonograph sends a signal to the bottom of the sea and the reflected wave reaches back to the ship in 2 seconds.
How deep is the sea at this point?

Answer 1

1500 m

Explanation:

Step 1:

From the basics of Sound Physics,

Distance = (Speed * Time) / 2

Here Speed = 1500 m/s

         Time = 2 Seconds

Step 2:

Distance = ( 1500 * 2)/2

               = 1500 m