Two very large charged parallel metal plates are 10.0 cm apart and produce a uniform electric field of 2.80 X 10^6 N/C between them. A proton is fired perpendicular to these plates with an initial speed of 5.20 km/s, starting at the middle of the negative plate and going toward the positive plate. How much work has the electric field done on this proton by the time it reaches the positive plate? Please show work and picture if possible