In the figure below, the plane defined by y = x separates medium1 of permeability Mr1 = 1 from medium2 of permeability Prz = 4. If the magnetic field in medium1 is; H = 2 10 [A/m] and the surface current density is; Js = 8 4V2 + 9 472 [A/m] on the boundary; a) determine the surface normal nz (10P) b) find H2, (20P) b) find B2. (10) To get points, solve the question by clearly specifying all formulas and writing all steps of mathematical operations. y=x Medium1 Medium2