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Solution: What is the magnitude of an electric field that balances the...

Question

What is the magnitude of an electric field that balances the weight of a plastic sphere of mass 2.2 g that has been charged to -3.0 nC?

A) 7.2x106 N/C

B) 8.1x105 N/C

C) 1.5x106 N/C

D) 2.2x106 N/C

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