A straight, copper wire has a length of 5.0 m and an excess charge of 10.0 ' 10" C distributed uniformly along it. In order to find the magnitude of the electric field at a point located 7.5 ' 10 3 m from the midpoint of the wire, we build a cylindrical Gaussian surface along the wire with the midpoint of the wire in the center. Assuming the length of the cylindrical Gaussian surface is 0.2m. a) How much charge is enclosed in the Gaussian surface? (2 pts) b) What is the magnitude of the electric field at a point located 7.5 ' 10 m from the midpoint of the wire? (2 pts) charged wire gaussian surface R L E -