For air, this quantity varies based on humidity and temperature.
For an ideal gas, this quantity equals the square root of the adiabatic index times the gas constant times temperature over molar mass, a result which can be derived from a more general formula equating it to the square root of the bulk modulus over the density. For air, this quantity varies based on humidity and temperature. An object (*) exceeding this quantity will cause the formation of a cone of condensation due to the formation of a shock wave, which is also accompanied by a loud boom. For 10 points, identify this speed equal to Mach one, the rate at which phenomena such as thunder and voices propagate through a medium.
For an ideal gas, this quantity equals the square root of the adiabatic index times the gas constant times temperature over molar mass, a result which can be derived from a more general formula equating it to the square root of the bulk modulus over the density.
speed of sound (accept Mach one before mentioned)