A gas with molecules of radius r and mass per molecule m is at temperature T and pressure p. (a) Write an expression for the mean free time for a molecule moving at the rms speed for this gas. (b) Which single change would have the greatest effect on the mean free time: doubling the radius r, doubling the pressure p, or doubling the temperature T?
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A gas with molecules of radius r and mass per molecule m is
at temperature T and pressure p. (a) Write an expression for the mean free
time for a molecule moving at the rms speed for this gas. (b) Which single
change would have the greatest effect on the mean free time: doubling
the radius r, doubling the pressure p, or doubling the temperature T?
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