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69.A sonar de...

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69.A sonar device on a submarine send out a signal And revives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the sumbrine is 3625 m.

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Q. Question 20
A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.

Q. A sonar device fitted in a submarine receives an echo

4 s

later the signal is transmitted towards another submarine

3060 m

away. Find the speed of sound in water.

Q. A sonar echo takes

4.4 s

to return from a submarine. If the speed of sound in water is

1500 m s^{- 1}

, then the distance of submarine from the sonar is:

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