+6q -2q -3q -29 -q +2g PO +2q +3q -9 -9 -3q +6q +3g -2q The figure above shows two square arrays of charged particles. The squares with edges of 2d and d are centered at point P and are misaligned. The particles are separated by either d or d/2 along the perimeters of the squares. NOTE: Express your answer to part (a) in terms of the given variables and eq. (a) What is the magnitude of the net electric field at P? (Note: The symbol used in the subscript of co is a zero, not an "O".)