Question

a boat uses its sonar system to send a signal directly downwards to the sea bed. An echo is recorded on the boat 2 seconds later. How deep is the water? PLS HELP IDKK

Answer 1

Answer:

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Explanation:

Time of receiving of an echo     t=2 s

Distance between the object and the submarine    d=3625 m

Thus the sound wave travels a distance of  2d in 2 seconds.

Let the speed of sound in water be  v

∴    2d=v×t

2×3625=v×2              ⟹v=1450  ms−1