Physics
A ship on the surface of water sends a signal and receives it back from the submarine inside water after 4 s. Calculate the distance of the submarine from the ship. (The speed of sound in water is 1450 ms-1).
Sound
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Answer
As we know,
Total distance travelled by the sound in going and then coming back = 2d
Given,
t = 4 s
V = 1450 ms-1
Substituting the values in the formula above, we get,
Converting m to km
1000 m = 1 km
Therefore, 2900 m = km = 2.9 km
Hence, distance of the submarine from the ship = 2.9 km
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