Consider the charge configuration shown consisting of two objects, a point charge q, and a charged arc with total charge Q. Q = -3.0 nc, d = R = 4.0 cm , and q = -3.0 nC. The arc spans an angle of 2f, with f = 60 degrees. ty Q R +X R a) Considering only the circular arc (and ignoring the point charge for a moment), find the electric field E at the origin of the coordinate system due to the circular arc of charge Q. Calculate E and express your answer in unit-vector notation. b) Now considering only the point charge (and ignoring the arc for a moment), find the electric field E at the origin due to the point charge q. Express this electric field in unit-vector notation. c) Use your answers from a) & b) to find the net electric field E at the origin of the coordinate system due to both the point charge q and the circular arc of charge Q. Express your answer in unit vector notation. Is it in the direction that you expect? Explain why or why not