A very thin rod of length 0.4 m, has a total charge of +10 uC uniformly lies along the x-axis. (a) Draw a diagram of for part (b), labeling your known and unknown variables, and include a coordinate system. (b) Set up an integral (or integrals) to determine the electric field (a vector) at a point on the x-axis, 0.1 m away from one end of the rod. (c) Calculate the net electric field at that point. Explain you reasoning and justify your work using the fundamental physics principles and definitions.