How do I do this?

1. Estimate the force between two current loops, diameter 10cm each carrying a current 10 Ampere each, and 1cm away. Can it overcome gravity for the wires?\f2. What is the magnetic field of the same loop at Im away on its axis? Use the idea that a current loop is like a magnetic dipole with moment I A.3. An electron is kind of like a current loop. Pointlike loop. It's complicated... But then again, it's quantum! Magnetic moment IA pir^2 e f=1/2 Le / m, with the angular momentum replaced by the Planck constant hbar ~104-34 J s. [ Roughly the same is true for the rotation of the electron around the nucleus.] What is the (a) the magnetic moment and (b) the magnetic field of the electron an angstrom away on its spin axis?QP 21 1 b A hollow cylindrical conductor of inner radius a and outer radius b (cross section shown above) carries a total current / uniformly distributed over its cross section. (a) Find an expression for the magnitude of the magnetic field B for points inside the body of the conductor, i.e., a