Physics

Problem

The average translational kinetic energy of a helium atom in a sample is measured to be

6.21\times10^{-21}\,\text{J}

. Using

k_B = 1.38\times10^{-23}\,\text{J/K}

, what is the temperature of the gas? a)

900\,\text{K}

150\,\text{K}

300\,\text{K}

450\,\text{K}