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(a) What is the speed of sound in air at...

(a) What is the speed of sound in air at `0^@ C` in miles per hour ?
(b) What is the approximate value od speed of sound in air at `20^@ C` in km/s ?

Text Solution

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(a) `740 "miles"//"hour as" 331 m//s = (331 m//s) ((1 "mile")/(1609 m)) ((3600 s)/(1 "hour")) = 740 "miles"//"hour"`.
(b) `v_(20) = (331 + 0.6 xx 20) m//s = 343 m//s ~~ (1)/(3) km//s`.
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