physics please help!
posted by jeff .
find the speed of sound (in m/s) at 35°C at 1 atm pressure in dry air

There are many websites online provide the speed of sound in air as a function of temperature.
Try this one:
http://www.sengpielaudio.com/calculatorspeedsound.htm
The most accurate formula is
Speed of sound = sqrt[(gamma)*R*T]
where T is the Kelvin temperatuere and gamma is the specific heat ratio, which is 1.4 for dry air. R' is the molar gas constant divided by the molecular weight of air . 
thank you!
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