How is a sonar used in finding the depth of the sea-bed?

Write the following statements in a sequential order to find the depth of the ocean bed by the using sonar . (A) The depth of the ocean bed can be found by d = (vt)/(2) . (B) At the bottom of a ship two devices , one is transmitter which products ultrasonics and a receiver for the detection of the reflected ultrasonics from the ocean bed are fixed . (C) The velocity fo ultrasonics in ocean water is 'v' and the time taken to receive the reflected ultrasonics from the ocean bed be 'f'. (D) If the depth of ocean bed is 'd' , then v = (d + d)/(t) = (2d)/(t) .

If the same time taken for the reflected sound to reach the sonar os 2 s, the depth of the sea is _______ m. (velocity of sound in water is 1500 ms^(-1) )

A metal rope of density 6000 kg//m^(3) has a breaking stress 9.8xx10^(8)N//m^(2) . This rope is used to measure the depth of the sea. Then the depth of the sea that can be measured without breaking is

What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves?

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.