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

2
by elixrofgood

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by elixrofgood

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the speed of sound is 1450 m/s

2 x distance=speed x time

Here the sound travels towards the surface which is d and after hitting back it comes to the source which has the same distance. So,2 x distance

3625 x 2=s x 5

7250=s x 5

7250/5=s

1450=s

therefore the speed of the signal is 1450m/s