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http://www.grc.nasa.gov/WWW/K-12/airplane/sound.html


Speed of Sound
Air is a gas, and a very important property of any gas is the speed of sound through the gas. Why are we interested in the speed of sound The speed of sound is actually the speed of transmission of a small disturbance through a medium. (Sound itself is a sensation created in the human brain in response to sensory inputs from the inner ear, which is sensitive to variations in pressure. We won't ...




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