net electric field.
Two charges are located on the x axis:
q1 = +4.0 ÁC at x1 = +4.0 cm, and q2 = +4.0 ÁC at x2 = -4.0 cm.
Two other charges are located on the y axis: q3 = +4.0 ÁC at y3 = +5.0 cm, and q4 = -7.0 ÁC at y4 = +7.0 cm.
Find the net electric field (magnitude and direction) at the origin.
magnitude in N/C
and the direction ░ (measured counter clockwise from the x axis)
not sure how to use the x and y axis Coloumb to help.
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The x,y axes are used in the problem to tell u the distance of each charge to the origin.
Now you have to find the electrical field generated by each charge at the origin, and then do a vector sum.