Question

The plastic paper clip and furry ball were initially neutral, but you rubbed them together until the electrostatic force exerted on the paper clip by the positively charged ball was able to lift the 0.026-N paper clip off the (insulating) table. The paper clip is now hovering (at rest) in midair, a distance of 2.5 cm below the ball as shown in the figure Determine the charge on the paper clip (including sign) assuming that no other charge transfers took place Qcip m nC Submit Assignment Save Assignment Progress

Answer 1

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F = 0.026 N d = 2.5 cm we have, F = k (Q) (Q)/d^2 0.026 = 9 times 10^9 times Q^2/(2.5 times 10^-2)^2 Q^2 = 1.8055 times 10^-15 (coulomb)^2 Q = 4.2492 times 10^-8 C Q = 42.492 nC