Question

what is the depth of sea if echo is heard after uses

Answer 1

Answer:

south Africa

Explanation:

the deepest mine in the world is in south africa.

Answer 2

Explanation:

velocity of sound in water

V = 1500 m/s

Let the depth of sea be x.

The sound has to travel to the bottom of the sea and get reflected back to the ship itself , thus total distance travelled by the sound is 2x.

Time taken to hear an echo t = 1 s

So, 2x = Vt

Or 2x = 1500 × 1

■ X = 750 m