Question

an echo sounder in a fishing boat receives an echo from a shoal of fish 0.4 seconds after it was sent.If speed of sound in water is 1500m/s how deep is the shoal?
please calculate and send.

Answer 1

I hope it helps you
if you find my answer as the best mark me as the btainliest please

Answer 2

Explanation:

Given that,

An echo sounder in a fishing boat receives an echo from a shoal of fish 0.4 seconds after it was sent, t = 0.4 s

Speed of sound in water, v = 1500 m/s

Let the shoal is d meter deep. We know that an echo travels twice a distance during its motion as :

Speed, $v=\dfrac{d}{t}$

d = 2 d

$v=\dfrac{2d}{t}$

$d=\dfrac{vt}{2}$

$d=\dfrac{1500\times 0.4}{2}$

d = 300 m

So, the shoal is 300 meters deep. Hence, this is the required solution.