The equation for the speed of sound in air v R T M can be simplified to give the equation for the speed of sound in air as a function of absolute temperature: v R T M R T M ( 273 K 273 K) ( 273 K) R M T 273 K 331 m / s T 273 K. Thats about 186,282 miles per second a universal constant known in equations as 'c. If the temperature is T C 20 C (T 293 K), the speed of sound is v 343 m/s. The equation for the speed of sound in air v R T M can be simplified to give the equation for the speed of sound in air as a function of absolute temperature: v R T M R T M ( 273 K 273 K) ( 273 K) R M T 273 K 331 m s T 273 K. For each degree Centigrade increase in temperature, the. If the temperature is T C 20 C ( T 293 K), the speed of sound is v 343 m/s. Propagation speeds for other media are given in the chart below. Newton’s formula for the speed of sound, $v=\sqrt$ lies in the specified range of $(0.350\pm 0.005)$ m. The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. At 0° Centigrade and 1.013 x 10 5 Newtons per square meter (normal atmospheric pressure), the speed of sound is 331.5 meters/sec, i.e. Note that adiabatic bulk modulus of an ideal gas at pressure $p$ is $B=\gamma p$ and its density is $\rho=pM/RT$. 1 Speed of Sound in Air: In SI units the speed of sound in air at 20C and 60 relative humidity is approximately 344 meters per second. Where $\gamma$ is the adiabatic index (ratio of specific heats), $R=8.314$ J/mol-K is the universal gas constant, $T$ is the absolute temperature and $M$ is the molecular mass. The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium.
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