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Consider N electrons (of mass m) within a metal of volume V, at absolute zero. Explain why dU = -pdV. find the pressure exerted

Consider N electrons (of mass m) within a metal of volume V, at absolute zero. Explain why dU = -pdV. find the pressure exerted by the electrons at absolute zero Show that the average energy of the electrons is 3EF/5, where EF is the Fermi energy.

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