Question

A sonar sends ultrasonic vibrations in a sea, after striking the sea bed these are reflected upward and are picked up after 2.4 seconds from the sending time. if the speed of sound in water is 1600m/s then calculate the depth of the sea.
please answer those who know this. and answer properly.....

Answer 1

Given - Time - 2.4 seconds

Speed - 1600 m/s

Find - Depth of the sea.

Solution - Sonar is based on echo. Thus, it calculates the distance between the two objects namely source of sound and the place where sound hits.

The formula for calculation is - V = 2d/t. In the formula, v is speed of sound, d is distance between source of sound and place and t refers to time.

Keeping the values in equation-

2d = V*t

2d = 1600*2.4

D = 80*24

D = 1920 metre.

Hence, the depth of sea is 1920 metres or 1.9 kilometres.