1. Relying on the magnetic moment of an electron, which we derived in class to be: ~10A-23 A mA2, a. What is the maximum magnetization density M that a solid could have? Hint what is the highest density of atoms you expect? b. This maximum magnetization density implies an estimate for the upper limit to the magnetic field that a material can produce. What is the maximum magnetic field this implies? 2. Consider again the figure below with two of the same solenoid you analyzed in the collaborative portion. What is the force between the two solenoids? Hint: At distances >> diameter of coil, the field outside the coil is well approximated by the field of two point monopoles (with opposite charge) at the ends of the coil, as illustrated in the figure