Distance between A and B = 1650 m

Speed (V)= 330 m s^{-1}

time t = ?

V = Distance\over Time

Substituting the values, we get,

330 = 1650\over t

⇒ t = 1650\over 330 = 5 s

Therefore, **the time when B will hear the sound after firing by A = 5 s.**

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## Question

# An observer A fires a gun and another observer B at a distance 1650 m away from A hears it’s sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.

## Answer

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Distance between A and B = 1650 m

Speed (V)= 330 m s^{-1}

time t = ?

V = Distance\over Time

Substituting the values, we get,

330 = 1650\over t

⇒ t = 1650\over 330 = 5 s

Therefore, **the time when B will hear the sound after firing by A = 5 s.**

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