1. The problem statement, all variables and given/known data The energy band for two different metals can be expressed as E=Ak2 and E=Bk2, respectively. Suppose A>B, and the Fermi energy is equal for these two metal. Calculate and compare the Fermi velocity for both metals. 2. Relevant equations 3. The attempt at a solution I'm very confused since I can't really see how the band energies and fermi energy are related. Thanks!