what is the speedness of sound??
50 Views|Posted 2011-06-04 17:59:09
Asked by Tohsako Ren
1 Answer
Answered by
2011-06-04 20:30:18
The speed of sound is the distance travelled during a unit of time by a sound wave propagating through an elastic medium. In dry air at 20 C (68 F), the speed of sound is 343.2 metres per second (1,126 ft/s). This is 1,236 kilometres per hour (768 mph),or about one kilometer in three seconds or appr
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