Question

a sonar use ultrasonic waves after 3 seconds when they are inside the sea water what is the depth of the reflecting object if speed of ultrasonic waves is 15000 metre per second in the sea water​

Answer 1

Answer:

45000m is the correct answer

Explanation:

Time taken to travel back and forth =6sec

Time taken to reach to reach the surface =3 sec

d =v*t

d=15000*3

d=45000m