Justify your answer 2006 the college board all rights

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Unformatted text preview: m (for AP professionals) and www.collegeboard.com/apstudents (for students and parents). GO ON TO THE NEXT PAGE. 7 2006 AP® PHYSICS B FREE-RESPONSE QUESTIONS (Form B) 3. (15 points) Three electric charges are arranged on an x-y coordinate system, as shown above. Express all algebraic answers to the following parts in terms of Q, q, x, d, and fundamental constants. (a) On the diagram, draw vectors representing the forces F1 and F2 exerted on the +q charge by the +Q and –Q charges, respectively. (b) Determine the magnitude and direction of the total electric force on the +q charge. (c) Determine the electric field (magnitude and direction) at the position of the +q charge due to the other two charges. (d) Calculate the electric potential at the position of the +q charge due to the other two charges. (e) Charge +q is now moved along the positive x-axis to a very large distance from the other two charges. The magnitude of the force on the +q charge at this large distance now varies as 1/x3. Explain wh...
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