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what is the formula for speed of sound. The mathematical representation is given as. It is the square root of the product of the coefficient of adiabatic expansion and pressure of the gas divided by the density of the medium.
Using this equation to determine the speed of a sound wave in air at a temperature of 20 degrees Celsius yields the following solution. C g x R x T M c the speed of sound in an ideal gas R the molar gas constant set at approximately 83135 J g Adiabatic index 14 for air T absolute temperature M the gas molar mass dry air is 00289645 kgmol When you are calculating the speed of sound in air you can simplify the formula to. It moves by transferring.
So the speed of sound in an ideal gas is For air at atmospheric pressure P 101 kPa and at T 20 C the density is 120 kgm 3.
The formula to find the speed of sound in air is as follows. The formula for speed of sound is given with respect to gases. The formula to find the speed of sound in air is as follows. The speed of sound is.