A-3.00 nc point charge is at the origin, and a second -5.50 nc point charge is on the x-axis at x = 0.800 m.

a. find the electric field (magnitude and direction) at point on the x-axis at x = 0.200 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.

b. find the electric field (magnitude and direction) at point on the x-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 x-direction.

c. find the electric field (magnitude and direction) at point on the x-axis at x = -0.200 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.