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Particles q1, 92, and q3 are in a straight line. Particles q1 = -1.60 x 10-6 C, 92 = 1.60 x 10-6 C, and q3 = -1.60 x 10-6 C. Particles qi and q2 are separated by 0.001 m. Particles q2 and q3 are separated by 0.001 m. What is the net force on q2?