Sonar device a submarine sends out signal and receives an echo 4 seconds later. Calculate the speed of sound in water if the distance of the object from the submarine is 3200 metre.
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time to go = 2.5 seconds
time to come = 2.5 seconds
total time = 5 seconds
distance = 3625 m
speed of sound in water = distance covered by sound /time.
= 3625/2.5
= 1450 m/s.
the speed of sound is 1450 m/s
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