1ME 501 Example Problem: Electron Gas in Metals The temperature of a 1.0 cm3copper metal crystal is raised from T1= 400 K to T2= 500 K. Calculate the internal energy change of the crystal 21UUdue to lattice vibrations viband due to the free electron gas elec. Assume that the temperature is high enough that the Einstein model is accurate for determining the internal energy due to lattice
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