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A rock under water is 1595 m deep. Find ...

A rock under water is 1595 m deep. Find the time in which an ultrasonic signal returns after reflection from the rock. Speed of ultrasonic waves in water = `1450m//s`.

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Here `x = 1595 m, upsilon = 1450 m//s, t =?`
As `upsilon xx t = x + x, `
`t= (2x)/(upsilon) = (2xx1595)/(1450) = 2.2s`
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