Two different gases are at the same temperature. What can be said about the average translational kinetic energies of the molecules? What can be said about the rms speeds of the gas molecules?
Chapter 6 Notes For sound to travel, it needs a medium. Only electromagnetic waves can travel through a vacuum. Sound waves practically never travel to an infinite medium. Sound is then reflected. The reflection can be regular or specular: reflected from a surface without losing its shape The angle of incidence of the wave is equal to the angle of reflection Specular reflection is pretty rare for sound waves, but it occurs for light when you are looking into a mirror The wall is smooth for a wave if the average size of the imperfection (bump) is much less than the wavelength of the wave Bumps cam be more for light and surface will still provide specular reflection. No real surface is a perfect reflector Since sound is elastic, it sets any surface into tiny oscillations. Even m
