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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?

    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...