A line of length 0: extends along the :c-axis from the origin of the coordinate system in the figure. The line has a nonuniform charge density Mac) 2 our, where a: is a positive constant. 1' 3! h? I I I I I l ax x . a (i) Find the total charge of the line. (ii) Find the electric field at the point (0, h). You can leave complicated integrals unevaluated