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A sound produced on the surface of a lak...

A sound produced on the surface of a lake takes 4-5 s to reach a boatman. How much time will it take to reach a diver inside water at the same distance if speed of sound in water is 4.5 times the speed of sound in air ?

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To solve the problem, we need to find out how much time it will take for sound to reach a diver in water, given that it takes 4.5 seconds for sound to reach a boatman in air, and that the speed of sound in water is 4.5 times the speed of sound in air. ### Step-by-Step Solution: 1. **Understand the Given Information:** - Time taken for sound to reach the boatman in air, \( t = 4.5 \) seconds. - Speed of sound in water, \( v_w = 4.5 \times v_a \) (where \( v_a \) is the speed of sound in air). ...
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