Atomic and Nuclear Physics Answers

three identical spin -1/2 fermions are to be distributed in two non degenerate distinct energy levels the number of ways this can be done is ans is 2 pls give solution

three identical spin -1/2 fermions are to be distributed in two non degenerate distinct energy levels the number of ways this can be done is pls give solution ans is 2

1. Sodium has mass number 22.9 and density 970 kg/m^3.

Find a) free electron concentration.

b) fermi wave number

C) fermi energy and velocity.

three identical spin -1/2 fermions are to be distributed in two non degenerate distinct energy levels the number of ways this can be done is

Two parallel metallic plates of equal area A are separated by a distance d, as shown in Figure 1. One plate carries a charge density  , and the other carries a charge - . The charge density is given by  =Q/A. Show that the Capacitance will be given by d A C 0  