Gaseous helium is in thermal equilibrium with liquid helium at 6.4 k. the mass of a helium atom is 6.65 × 10−27 kg and boltzmann’s constant is 1.38066 × 10−23 j/k. determine the most probable speed of a helium atom. answer in units of m/s.

What would occur if the index of refraction of a material was less than n=1? the speed of light would increase to a speed larger than the maximum speed of light in a vacuum. the light wave would not bend at all though the material. the light wave would not be able to refract and would instead reflect off of the material. the speed of light would reduce to values close to 0 m/s.