(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two small plastic spheres are given positive electrical charges. When they are a distance of 14.2cm apart, the repulsive force between them has a magnitude of 0.220 N.

A. What is the charge on each sphere if the two charges are equal? Ans: 7.02X10^-7

B. What is the charge on first sphere if it has four times the charge of the other?

C. What is the charge on the second sphere?

2. Relevant equations

Coulomb's Law --> F=kQ1Q2/r^2

3. The attempt at a solution

Already solved part A. Having trouble with part b. Both have a charge of 7.02X10^-7 C. The second question says if one sphere is 4 times the other, what is the charge. Wouldn't that just be 4 multiplied by 7.02X10^-7? Thats what I did, and its wrong.

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# Electric Charge

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