Question

please explain this question and tell the answer..please send the formula of echo and formula of distance from the wall..​

Answer 1

(B)3km.

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Answer 2

Answer:

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Explanation:

speed of sound in water = 1.5

Sound returning to ghip = 2sec

Sound reaches to ship=1 sec

Depth of sea =

= Velocity x time

= 1.5 km