Under water, dolphins

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Under water, dolphins

Under water, dolphins emit sounds which have a wavelength of 5.76 mm. In air the same sounds have a wavelength of 1.36 mm. From this information, and the fact that the speed of sound is 343 m/s in air, how large is the speed of sound in water?

physics Hw science

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Answer 1

Answer #1

as the frequency of sound is constant in both mediums,

speed of sound in water is vw

speed of sound in air, va = 343 m/s

Now, speed of sound in water/wavelength in water = speed of sound in air/wavelength in air

vw/5.76 = 343/1.36

solving for vw

vw = 1452.7 m/s

the speed of sound in water is 1452.7 m/s

answered by: Abovern

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Answer 2

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Under water, dolphins

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