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Alternating Current

Question

Wired Faculty App

The rms speed (in m/s) of oxygen molecules of the gas at temperature 300 K, is

483

504

377

346

Solution

A.

483

The rms speed is given by

V_rms = $\sqrt{\frac{3 RT}{M_{0}}}$

where R = gas constant

T = Temperature of the gas

and M₀ = Molecular weight of the gas

V_rms = $\sqrt{\frac{3 \times 8.3 \times 300}{32 \times 10^{- 3}}}$

V_rms = 483 m/s

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