The rms velocity can be calculated by

Question

$(a)\;u=\sqrt{\large\frac{3P}{d}}\qquad(b)\;u = 1.58\sqrt{\large\frac{T}{M}}\times 10^4cm\;sec^{-1}\qquad(c)\;\large\frac{u_2}{u_1}=\sqrt{\large\frac{T_2}{T_1}}\qquad(d)\;Any\;of\;the\;above$