Question: (Book problem 22.16) A small glass bead has been charged to +20nC. A small metal ball bearing 1.0 cm above the bead feels a

(Book problem 22.16) A small glass bead has been charged to +20nC.

(Book problem 22.16) A small glass bead has been charged to +20nC. A small metal ball bearing 1.0 cm above the bead feels a 0.018 N downward electric force. What is the charge on the ball bearing?

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