Looking Good Formula For Speed Of Sound
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The mathematical representation is given as.
Formula for speed of sound. A2 R T 1 gamma - 1 1 gamma-1 thetaT2 e thetaT e thetaT -12. This speed is the phase speed of transverse traveling waves. Speed Of Sound Formula The speed of sound is defined as the travelled by the sound wave that propagates per unit time through an elastic medium.
For the specific example of dry air at 20C the speed of sound in air is 343 ms while the rms speed of air molecules is 502 ms using a mean mass of air molecules of 29 amu. We get Newtons formula for the speed of sound in airHence On substituting the values of atmospheric pressure and density of air at STP in equationrelationwe find that the speed of sound waves in air comes out to be 280 ms -1whereas its experimental value is 332ms -1. The speed of sound is vsound ms fts mihr.
The speed of sound depends on several variables but the only independent variable we need to calculate the speed of sound is the temperature of the air. C0 speed of sound in air at 0C. This equation provides a rather accurate estimate of the speed of sound for temperatures upwards towards 50C.
In a perpendicular medium the speed of the sound depends on the elasticity and density of the medium. This is much lower than the experimental value of 332 ms. For air at sea level the speed of sound is given by vw 331 ms T 273 K v w 331 ms T 273 K where the temperature denoted as T is in units of kelvin.
At 0C the speed of sound is 331 ms. Appendix C gives the speed of sound in seawater. C 3313 06 You can get the speed of sound easily Eq.
Is usually used in formulas. This video will present a derivation of the speed of sound. Equation 20 is the same as equation 43 in Reference 1.
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