help please

A plastic rod 1.3 m long is rubbed all over with wool, and acquires a charge of -5e-08 ooulombs. We choose the center of the rod to be the origin of our coordinate system, with the X-axis extending to the right, the y-axis extending up, and the zaxis out of the page. In order to calculate the electric eld at location A = m, we divide the rod into 8 pieces, and approximate each piece as a point charge located at the center of the piece. ; h b i g c 5 A 5 f e d g j zero magnitude (a) What is the length of one of these pieces? l = 01625 I m (b) What is the location of the center of piece number 3? C xm. (c) How much charge is on piece number 3? (Remember that the charge is negative.) 43.25909 coulombs (d) Approximating piece 3 as a point charge, what Is the electric field at location A due only to piece 3? E3 = x N/C (e) To at the net electric eld at location A, we would need to calculate E due each of the 8 pieces, and add up these contributions. If we did that, which arrow above would best represent the direction of the net electric eld at location A