V Part A A-4.00 nC point charge is at the origin, and a second -5.00 nC point charge is on the x-axis at Find the electric field (magnitude and direction) at point on the c-axis at x = 0.200 m. = 0.800 m. Express your answer with the appropriate units. Enter positive value if the field is in the positive x- direction and negative value if the field is in the negative x-direction. HA ? Value Units Submit Request Answer Part B Find the electric field (magnitude and direction) at point on the c-axis at x = 1.20 m. Express your answer with the appropriate units. Enter positive value if the field is in the positive x- direction and negative value if the field is in the negative c-direction