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  • Feb 19, 2013, 11:47 AM
    elleprest
    Physics problem solver
    If you shout across a canyon and hear the echo 0.80 s later, how wide is the canyon?
  • Feb 20, 2013, 12:24 AM
    Tuttyd
    Hi elleprest,

    Basically, you need to know the speed of sound to work out this problem. Once you have done so all you need to do is work out distance equals speed x time.

    Keep in mind that the sound travels across the canyon and BACK again to the listener.

    Tut

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