v = \sqrt{\frac{8 k T}{π m}} = \sqrt{\frac{8 \times 1, 38 \times 10^{- 23} \times 295}{3, 14 \times 4, 7 \times 10^{- 26}}} = 470 m / s

${v = \sqrt{\frac{8 k T}{\pi m}} = \sqrt{\frac{8 \times 1,38 \times 10^{-23} \times 295}{3,14\times 4,7\times 10^{-26}}} = 470 \mathrm{m/s}}$