A sonar emits pulses on the surface of water which are detected after reflection from its bottom at a depth of `1531 m`. If the time interval between the emission and detection of the pulse is `2 s`, find the speed of sound in water.

A message was transmitted from boat which returned to the sender after reflection from the bottom of the sea in 0.8 s. If the velocity of sound in water is 1500ms^-1 then find the depth of sea.

A message was transmitted from boat which returned to the sender after reflection from the bottom of the sea in 0.8 s. If the velocity of sound in water is 1500ms^-1 then find the depth of sea.

An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the sending and the receiving of the wave is 1.5 s. Calculate the depth of the sea, , if the velocity of sound in sea water is 1400 ms^(-1) .

A research team sends a sonar signal to confirm the depth of a sea. They heard an echo after 6s.Find the depth of the sea m/s? If the speed of sound in sea water is 1500m/s?

There is a sunken ship at a depth of 50 m in a sea. From the surface of sea, waves are sent to locate it. Find the time when the wave after reflection will reach the surface. State whether echo is heard or not? Give reason. Take speed of sound in water = 1400 m s^(-1)