# Physics

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A sailor strikes the side of his ship just below the surface of the sea. He hears the echo of the wave reflected from the ocean floor directly below 3.88 s later. If the speed of sound in seawater is 1560 m/s, How deep is the ocean at this point?

• Physics -

d = 1560m/s * (3.88s/2) = 3026.4 m.

NOTE: 3.88 s = Time to travel to bottom
of ocean and return.

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