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Set 9. O-1 points CJ10 18.P01 Two point charges are fixed on the y axis: a negative point charge a: - 28 JC at ys +8.1 uCis fixed at the origin. The net electrostatic force exerted on the charge q by the magnitude of qz +0.19 m and a positive point charge 9z at y2 the other two charges has a magnitude of 16 N and points in the +y direction. Determine 92- Section 18.5 CU10 18 P014 The drawings show three charges that have the same magnitude but may have different signs. In all cases the distance d of the charges is lql-5.3 uC, and the distance between them is d 1.5mm. Determine the magnitude of the net force on charge 2 for each of the three drawings (b) F
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Answer #1

Using Colombs law,

Force = kqq1/r1^2 + kqq2/r2^2

16 = 9e9*8.1e-6*-28e-6/0.19^2 + 9e9*8.1e-6*q2/0.38^2

q2 = 0.000144 C answer

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