At what temperature will the rms speed of oxygen molecules becomes just sufficient for escaping from the Earth's atmosphere? (Given Mass of oxygen molecules m = 2.76 × 10 - 26 kg , Boltzmann's constant k B = 1.38 × 10 - 23 J K - 1 )

Question

At what temperature will the rms speed of oxygen molecules becomes just sufficient for escaping from the Earth's atmosphere? (Given Mass of oxygen molecules m = 2.76 × 10 - 26 kg , Boltzmann's constant k B = 1.38 × 10 - 23 J K - 1 ), 5.016 × 10 4 K, 8.360 × 10 4 K, 2.508 × 10 4 K, 1.254 × 10 4 K

MARKS App · Accepted Answer

V e = V r m s 11.2 × 10 3 = 3 k T m ⇒ T = 11.2 × 10 3 2 m 3 k Putting value of m and k T = 8.360 × 10 4 K

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