(a) Determine the electric field strength at a point 1.00 cm to the left of the middle charge shown in the figure below. (Enter the magnitude of the electric held only.) 6.00 AC 1.50 AC -2.00 AC 3.00 cm +2.00 cm- N/C (b) if a charge of -7 86 UC is placed at this point, what are the magnitude and direction of the force on it? magnitude IN direction Nood Help