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    Clarissa is standing at the bottom of a canyon, shouting at a canyon wall that is 4360 feet away. How long will it take for the sound to come back to her as an echo?

    Question #77770. Asked by Tank42. (Mar 24 07 2:48 PM)


    tragic_flawed

    		Will the echo come back!? I don't think so...but if it did around 11.3 seconds?

    Mar 24 07, 3:23 PM
    Baloo55th

    		You've never met Clarissa.....

    Mar 24 07, 3:47 PM
    Marxious

    		Approximately 5 seconds.

    Mar 24 07, 5:21 PM
    What-A-Mess

    		"At sea level, at a temperature of 21 °C (70 °F) and under normal atmospheric conditions, the speed of sound is 344 m/s (769.5 mph or 1238 km/h or 979 ft/sec)."

    Elevation, temperature and humidity WILL change the speed of sound through air.

    Knowing this......The distance of 4360 feet times 2 (there and back) divided 979 = 8.9070 seconds

    Mar 24 07, 6:48 PM

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