(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 field only.) 6.00 uC 1.50 uC 2.00 unC P + S L 3.00 cm J' 2.00 cm .' @ N/C (b) If a charge of 4.89 pC is placed at this point, what are the magnitude and direction of the force on it? magnitude N direction et toward the right Need Hel upward toward the left downward