Consider the elements Rubidium (Rb) and Tin (Sn). Their atomic mass, density and electronic shell structure are provided in the table below. Using the free electron gas model, evaluate the Fermi energy of Rubidium and Tin and their corresponding degenerate pressure (pressure of the electron gas). Express your pressure values in kbars. The experimental Fermi energy values for Rb and Sn are 1.85 eV and 10.2 eV respectively. How many free electrons per atom did you employ in your calculations? Explain.

4. Suppose the speed of a projectile of mass 1.0 g is known to within 1.0 µms-1. Calculate the minimum uncertainty in its position. Repeat the computation for an electron and comment on the results. 5. Suppose the wavefunction, b(x), is an Eigenfunction of the operator Q with an Eigenvalue Q. Show that the uncertainty in the measurement of Q is given by AQ = V(Q?) – (Q)². Assume (x) is normalized.