Student Name: AP Physics 1 Semester ExamPart II (Free Response) 20 points Directions: Two charges, +Q and +20, are positioned along the y axis of an xy coordinate system as shown. Charge 1 is at the point (0, a) and Charge 2 is at the point (0, -Za). Answer the following questions and then scan this response in to be attached to this exam. Be sure to show all your work for maximum points on this question! Chargel +q . (0,3) +2q . (0,2a) ChargeZ 3) Find the electric force (magnitude and direction) felt by Charge 1 due to Charge 2. Student Name: AP Physics 1 Semester ExamPart II (Free Response) b) Find the electric field (magnitude and direction) at the origin created by both charges. c) If a small negative charge, q, of mass m were placed at the origin, what is its initial acceleration