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    Deriving equations for pressure & number density for centrif

    Er, I mean nv = n0 * e^(m * r^2 * w^2 / (2 * k * T)). This part may also be wrong, since I think it should be nv = n0 * e^(-m * r^2 * w^2 / (2 * k * T)) since it reminds me of the boltzmann factor.
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    Deriving equations for pressure & number density for centrif

    Homework Statement Consider particles in a gas centrifuge. This device is used to separate gases of different molar mass by rotating a cylinder at high rates. Derive two equations: one for the pressure (P) and one for the particle number density (nv) as functions of M, r, w and T, where r is...
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    Limit problem?

    Don't know what you mean by that. It's fine though because I was able to find a solution! With WR's help, I was able to find out where I screwed up. In the end I got ln(y) = 3/((1-2t)*(1-t)), where t=1/x, and factored out 3 and then evaluated for t->0 (same as stating x->∞). This got me...
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    Limit problem?

    Homework Statement ((x+2)/(x-1))^x, lim as x --> infinitiy Homework Equations I think l'Hospital's Rule or something like that...Not sure where to begin with this one. The Attempt at a Solution ((x+2)/(x-1))^x is the same as saying ((x+2)^x)/((x-1)^x). Since the numerator and denominator...
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