Question: please answer questions 5 & 7 5) The Fermi energy for Cu is 7.0eV. Calculate the room temperature (300K) value of the Fermi-Dirac distribution for

please answer questions 5 & 7

5) The Fermi energy for Cu is 7.0eV. Calculate the room temperature (300K) value of the Fermi-Dirac distribution for 6.9eV and 7.1eV. The values should be close to one and zero respectively - Why? 6) Consider an electron gas with F=3.0eV. At what temperature will fFD(0.9F)=0.9 ? 7) Show that in the low frequency limit, (v)dv for the photon gas reduces to: (v)dvc38v2kTdv Hint: Use the expansion of ex to first order

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