An echo-sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4s after it we sent. If the speed of sound in water is 1500 m/s, how deep is the shoal?

An echo sounder in a fishing boat receives an echo from a shoal of fish 0.45 secs after it was sent. If the speed of sound in water is 1500 m//s , how deep is a shoal?

The minimum distance to hear echo (speed of sound in air is 340 m//s )

It takes 2.4 s to record the echo of a sonar. If the speed in water is 1450 m//s , find the depth of the ocean floor.

The echo of a sound is heard after 5 seconds. If the speed of sound in air be 342m/s, calculate the distance of the reflecting surface.

The echo of the sound of an explosion from the bottom of an ocean was heard after 10 sec of its occurrence. If the velocity of sound in water be 1500 m//s , the depth of the ocean at the place is :