(10%) Problem 10: Consider the point charges arranged at the corners and at the center of a square, as O qa depicted in the figure. O q O go O qd Find the magnitude of the net Coulomb force, in newtons, on the charge q in the figure, given that q = 1.2 JC, qa = 2.2 uC, qb = -3.1 MC, qc = -4.1 uC, and qd = 1.5 uC. The square is 72 cm on a side. IFI =