A sonar device on a submarine sends out a signal and receives an echo 5s later?

Question: A sonar device on a submarine sends out a signal and receives an echo 5s later?

Sonar is a method used to navigate and detect objects, usually underwater. It works by sending out sound waves in a particular direction and then listening for the echo that these sound waves create when they reflect off of objects. In a submarine, a sonar device usually sends out a signal at regular intervals, and the time between the signal and the corresponding echo is measured to determine the distance to the object. In this case, it took 5 seconds for the sound wave to travel from the device, hit an object, and come back to the submarine. This suggests that the object is located 5 seconds away from the submarine.

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