An air molecule has a mass of about 5 × 10−26 kg. Consider two differ- ent possible states in which an air molecule migh

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An air molecule has a mass of about 5 × 10−26 kg. Consider two
differ- ent possible states in which an air molecule might be
found. In state 1 the molecule moves in a certain direction at a
speed of 400 m/s, and in state #2 the molecule is standing still.
What is the ratio of the probabilities for the air molecule to be
in these two states, P1/P2, if the air temperature is (a) 17 ◦C,
(b) −40 ◦C? Ans for a) is 0.368 b) is 0.288