can you please show me how we got the answers Three point charges are located on the x-axis t the following positions: Q_1 = +2.00 mu C is at x = 1.00 m, Q_2 = +3.00 mu C is at x = 0.00, and Q_3 = -5.00 mu C is at x = -1.00 m. What is the magnitude of the electric force on Q2? A 15 nC charge and a -5 nC charges are places 3 cm apart on in the horizontal direction. A -90 nC charge is placed directly above the -5nC charge at a distance of 1 cm. What is the magnitude of the net electrical force on the -90nC charge due to the other two charges? Two tiny particles having charges +20.0 mu C and -8.00 mu C are separated by a distance of 20.0 cm. What are the magnitude and direction of electric field at the midpoint between these two charges?