Question

A pulse of sound is sent from the sea surface to the sea bed and its echo received after 0.8 seconds.Calculate the depth of the sea given that the velocity in sea water is 150m/s

Answer 1

Answer:

The answer is 120 m depth

Explanation:

0.8sec taken so if the speed is 150 msec

Then we will use unitary method by dividing 150 by 10 to find 1/10

We get 15 as the answer then we will multiply 8 with 15 which gives 120

Hence the answer is 120 m depth