a cylinder contains a mixture of helium and argon gas in equilibrium at 1508c. (a) what is the average kinetic energy for each type of gas molecule? (b) what is the rms speed of each type of molecule?

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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it is called kinetic energy

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