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How fast would sound wave travel than the other if a signal was sent through air and water by a distress ship at sea 1 mile from a light house when temperature is 20 °C. P(Sound in air at 0°C is 331 m/s and for every AT in temperature of air the speed increases by 0.6 m/s. Sound waves in under water travel 3 times faster than air.

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Answer:

3.13 s difference

Explanation:

Velocity of sound  in air at 20°C = 331 + .6 X 20 = 343 m s⁻¹

Velocity of sound in water at 20°C = 3 X 343 = 1029 m s⁻¹

Time taken by sound in air to cover 1 mile or 1609 m distance

=[tex]\frac{1609}{343}[/tex]

= 4.69 s

Time taken by sound in water to cover 1 mile or 1609 m distance

= [tex]\frac{1609}{1029}[/tex]

1.56 s

difference = 3.13 s .

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