Point charge q1 = -5.00 NC is at the origin and point charge q2 = +3.00 NC

Question:

Point charge q1 = -5.00 NC is at the origin and point charge q2 = +3.00 NC is on the x-axis at x = 3.00 cm. Point P is on the y-axis at Y = 4.00 cm.
(a) Calculate the electric fields E1 and E2 at point P due to the charges q1 and q2. Express your results in terms of unit vectors (see Example 21.6).
(b) Use the results of part (a) to obtain the resultant field at P, expressed in unit vector form.