average velocity squared of a molecule 翻译

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• average velocity squared of a molecule 翻译
• average velocity squared of a molecule 翻译
• 英语翻译Under which of the following conditions is the magnitude of the average velocity of a particle moving in one dimension smaller than the average speed over some time interval?A.A particle moves in the +x direction without reversing.B.A particle moves in the -x direction without reversing.C.A particle moves in the + x direction and then reverses the direction of its motion.D.There are no conditions for which this is true.
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