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Question 3 1 pts The figure shows an equilateral triangle ABC. A positive point charge +q is located at each of the three vertices A B, and C. Each side of the triangle is of length a. A point charge Q (that may be positive or negative) is placed at the mid-point between B and C a/2 Ref 18-1 Is it possible to choose the value of Q (that is non-zero) such that the force on Q is zero? Explain why or why not. O Yes, because the electric force at the mid-point between B and C is zero whether a charge is placed there or not. O No, because a fourth charge would be needed to cancel the force on Q due to the charge at A. O No, because the forces on Q due to the charges at B and C point in the same direction. No, because the forces on Q are vectors and three vectors can never add to zero. O Yes, because the forces on Q are vectors and three vectors can add to zero.
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