Answer to Question #350511 in Electricity and Magnetism for wamai

Question #350511

 A small plastic sphere is charged to -10 nC. It is held 1.0 cm above a small glass bead at rest on a table. The bead has a mass of 15 mg and a charge of +10 nC. Will the glass bead “leap up” to the plastic sphere?


1
Expert's answer
2022-06-14T08:42:04-0400

"\\frac{F_1}{F_2}=\\frac{kq_1q_2}{r^2mg}=60>1," yes.


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