Two fixed charges, a and b, are located at x axis. a is at (-3 m, 0 m), b is at x = (+3 m, 0 m). qa = +4.0 μc and qb = -4.0 μc. calculate the electric field at point (0 m, 4 m) on the y axis.

Explanation:

Given

Charge on A is at (-3,0)

Charge on B is at (3,0)

Electric Field at a distance d is given by

Thus Electric filed at (0,4) due to A is

Here

Similarly is

Electric Field is at an angle which is given by

Thus and component will cancel out each other and Cos component will add up

  (towards positive x axis )

i think if it were me i whould divide 300 dide 15

step-by-step explanation: