In Figure (a) below, a particle of charge +Q produces an electric field of magnitude Epart at point P, at distance R from the particle. In Figure (b), that same amount of charge is spread uniformly along a circular arc that has radius R and subtends an angle 0. The charge on the arc produces an electric field of magnitude Eare at its center of curvature P. For what value of 0 (in ) does Earc = 0.9Epart? (Hint: You will probably resort to a graphical solution.) (a) (b) Number i : Units . (degrees)A charge (uniform linear density = 5.9 nC/m) lies on a string that is stretched along an x axis from x = 0 to x = 3.4 m. Determine the magnitude of the electric field at x = 9.3 m on the x axis. Number i Units