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Echo

An echo - sou...

Question

An echo - sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4 s after it was sent. If the speed of sound in water is 1500 m/s, how deep is the shoal ?

(a) 150 m

(b) 300 m

(c) 600 m

(d) 7500 m

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Solution

(b) 300m

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