Physics, 05.05.2020 08:48, sistrunkbrittnorn5dz
Sound waves travel at the rate of 343 m/s at 20°C. If a man standing 450 meters away from the wall of a canyon yells, “Hello,” how long will it take for him to hear his own voice echo off of the wall?
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Sound waves travel at the rate of 343 m/s at 20°C. If a man standing 450 meters away from the wall o...
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