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physics

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a gun is fired from a distance of 1.2 km from a hill.the echo of the sound is heard after 7.1 seconds at the same place. Calculate the velocity of sound.

  • physics - ,

    distance d= 1.2•2=2.4 km =2400 m.
    t =7.1 s
    v=d/t = 2400/7.1 =338 m/s

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