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A Google search should have sufficed.

Anyway, according to the Physics textbook by Serway (page 489),

the speed of sound in air is 343 meters/second.

What is weird is that 343 is the cube of 7.

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Why is that "weird"? It's only a co-incidence! :-)

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The speed quoted is the mean as it is affected by temperature and humidity, but only slightly. BTW the word is French so the proper spelling is "metres".

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You are right about that first line - this site is a branch of Wikipedia and that gives direct answers to so many simply-found questions asked on here.

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7y ago

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