Desperate ->and explain! : )
"the average translational kinetic energy of a gas molecule of mass m is given by (mv^2)/2 = 1.5at, where v is the molecule's average speed, a is the boltzmann constant, and t is the absolute temperature (k). assume that there is one hydrogen atom per cm^3 in outer space, where the temperature is 3.5k. determine the particle's average speed."