18. Numerical based on SONAR

An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.4 seconds. What is the depth of the sea if the velocity of sound in the seawater is 1400 \(m/s\) ?

 

 

Answer:

The depth of the sea is  \(m\)