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Physics

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.

Sound Waves Propagation

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Answer

Given,

Distance between A and B = 1650 m

Speed (V)= 330 m s-1

time t = ?

V = Distance (d)Time (t)\dfrac{\text{Distance (d)}}{\text {Time (t)}}

Substituting the values, we get,

330=1650tt=1650330t=5 s330 = \dfrac{1650}{t} \\[0.5em] \Rightarrow t = \dfrac{1650}{330} \\[0.5em] \Rightarrow t = 5 \text { s} \\[0.5em]

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

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