What is Ex at x = -2 cm? Express your answer with the appropriate units. (Figure 1) shows a graph of V versus a in a region of space. The potential is independent of y and z. View Available Hint(s) HA ? Ex = Value Units Submit Part B What is Ex at x = 0 cm? Figure Express your answer with the appropriate units. View Available Hint(s) V(V) LA -10- Ex = Value Units x (cm) -3 -2 -1 1 2 3 Submit -10- Part C What is Ex at x = 2 cm