Physics - Heat & Thermo Question with Solution | TestHub

The interior of a star is at $1.5\times 10^7$ K. Treating helium nuclei ($m=6.64\times 10^{-27}$ kg) as an ideal gas, find their rms speed in units of $10^5$ m $s^{-1}$ (two decimals, $k=1.381\times 10^{-23}$ J $K^{-1}$).