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speed of sound

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jonks | 17:40 Mon 29th Aug 2005 | How it Works
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how fast is the speed of sound?
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Avatar Image ugly_bob
in air approximately 330 m/s

Depends on medium through which it is propogating
18:18 Mon 29th Aug 2005
Avatar Image Mattk
and also varies depending on height.it is usually measured at sea level.
19:19 Mon 29th Aug 2005
Avatar Image tony1941

I remember it as 1120 feet/sec at sea level in dry air at 20 degrees C.  This is a bit more than 330 m/s, so I'll look it up in Kaye & Laby (the physical constants bible) tomorrow.  It's also very roughly 5 seconds per mile, which gives you the delay between lightning and the sound of thunder, depending on the distance of the strike.

22:15 Tue 30th Aug 2005
Avatar Image Octavius
speed of sound at sea level = 340.29 m / s
12:39 Wed 31st Aug 2005
Avatar Image Octavius

Orders of magnitude is a good indicator:

http://en.wikipedia.org/wiki/Orders_of_magnitude_%28speed%29

12:54 Wed 31st Aug 2005

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