The velocity of sound in oxygen gas at S.T.P. is v. What will be the Velocity of sound in Helium gas under same conditions?:

What is the velocity of sound in vacuum?

Velocity of sound in air at 0 ^(@)C is 330 m/s . What will be the velcity o sound in air at 10 ^(@) C ?

IF the rms velocity of hydrogen gas at certain temperature is c, then the rms velocity of oxygen gas at the same temperature is