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Two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N? A. 562 B. 9.
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Two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N?

A. 562
B. 9.14 * 10^3
C. 1.01 * 10^6
D. 891

User Oscar Ekstrand
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1 Answer

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I believe the answer is B9.14*10^3
User Lmsasu
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