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what is the equation for the speed of sound. The equation for the speed of sound in air v gRT M v g R T M can be simplified to give the equation for the speed of sound in air as a function of absolute temperature. In an ideal gas see The Kinetic Theory of Gases the equation for the speed of sound is v sqrtfracgamma RT_KM label176 where gamma is the adiabatic index R 831 Jmol K is the gas constant T K is the absolute temperature in kelvins and M is the molecular mass.
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Pressure p 3kPa 3000 Pa. The approximate speed of sound in dry 0 humidity air in metres per second at temperatures near 0 C can be calculated from where is the temperature in degrees Celsius C. Speed of sound the square root of the coefficient of adiabatic expansion the pressure of the gas the density of the medium.
The formula to find the speed of sound in air is as follows.
Temperature T 276 K. The equation for the speed of sound in air v gRT M can be simplified to give the equation for the speed of sound in air as a function of absolute temperature. Find out the speed of the sound. 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.
