The kinetic molecular theory attributes an average translational kinetic energy of $\large\frac{3}{2}\large\frac{RT}{N}$ to each particle. What rms speed woul a mist particle of mass $10^{-12}g$ have a root temperature $(27^{\large\circ}C)$ according to kinetic theory of gases.

Question

$(a)\;0.35 \;cm\; sec^{-1}\qquad(b)\;35 \;cm\; sec^{-1}\qquad(c)\;3.5 \;cm\; sec^{-1}\qquad(d)\;0.035 \;cm\; sec^{-1}$