What is the depth of the sea? The echo-receiver of a sonar attached to a ship, receives the echo from the bottom of sea 4 seconds after the ultrasonic waves were sent into the sea. The speed of sound in water is 1500 m/s.
The depth of the sea is 3000 meters.
Let the depth of the sea be X
V = 2X/t
Where V is speed and t is time
1500 = 2X/4
2X = 1500 * 4
X = (1500 * 4)/2
X = 6000/2
X = 3000 meters.
Therefore, the depth of the sea is 3000 meters.
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