Question

On sending an ultrasonic wave from a ship towards the bottom of a sea, the time interval between sending the wave and receiving it back is found to be 1.5 s. If the velocity of wave in sea water is 1400 m s^-1, find the depth of the sea.

Answer 1

t = 1.5 s,

V = 1400 m/s, 

d = ?

V = `(2d)/t`

or d = `(V xx t)/2`

d = `(1400 xx 1.5)/2`

= 1050 m