College Physics ›› 2020, Vol. 39 ›› Issue (9): 51-52.doi: 10.16854 /j.cnki.1000-0712.200041

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Mean relative speed between different molecules in mixed gases

HAI Wen-long1,PANG Dan-yang1,2   

  1. 1. School of Physics,Beihang University,Beijing 100191,China 2. Beijing Key Laboratory of Advanced Nuclear Materials and Physics,Beihang University,Beijing 100191,China
  • Received:2020-02-18 Revised:2020-03-27 Online:2020-09-20 Published:2020-09-25

Abstract: Based on the definition of the relative speed, the mean relative speed between different molecules in mixed gasses is derived by the combination of Maxwell speed and velocity distributions.

Key words: Maxwell velocity distribution, mean relative speed between molecules, velocity of relative motion