A ship on the surface of water sends a signal and receives it back from a submarine inside water after 4 s. Calculate the distance of the submarine from the ship. (The speed of sound in water is 1450 m $s^{- 1}$ ).

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Solution

time to go = 2 seconds
time to come = 2 seconds
total time = 4 seconds
distance = ?

the speed of sound in water =1450m/s

As we know
distance =speed $\times$ time
distance =4 $\times$ 1450m/s
distance = 5800m (it is total distance travelled by sound)

hence the distance between ship and submarine =

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Standard IX Physics

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A ship on the surface of water sends a signal and receives it back from a submarine inside water after 4 s. Calculate the distance of the submarine from the ship. (The speed of sound in water is 1450 m s−1).

time to go = 2 seconds time to come = 2 seconds total time = 4 seconds distance = ? the speed of sound in water =1450m/s As we know distance =speed × time distance =4 × 1450m/s distance = 5800m (it is total distance travelled by sound) hence the distance between ship and submarine =

A ship on the surface of water sends a signal and receives it back from a submarine inside water after 4 s. Calculate the distance of the submarine from the ship. (The speed of sound in water is 1450 m $s^{- 1}$ ).