Changing Charge Distribution and Coulomb's Law

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    Coulomb's law Law
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The discussion revolves around calculating the new repulsive force between two charged spheres after altering their charges. Initially, two spheres with charges of 10Q repel each other with a force F. Upon transferring 2Q from one sphere to another, the new charges become 12Q and 8Q. The correct approach is to express the new force in terms of the original force F, using a different symbol to avoid confusion. The final step involves determining the fraction of the original force that the new force represents.
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Homework Statement



Two small spheres of charge 10Q each separated by a distance d repel each other with a force F. In terms of F what would be the new repulsive force if 2Q were removed from one sphere and added to the other?


Homework Equations



F = kQq/r^2

The Attempt at a Solution



F = k(10Q)(10Q)/d^2 if 2Q were removed... F = k(12Q)(8Q)/d^2

Is that the answer? it seems too easy

Thanks for any input!
 
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You need to find what fraction of F is the new force. Just one more step to do.
 
Your answer is correct but is not "In terms of F". Tip do not use the same symbol "F" to represent two different quantities. If the original force is F than the new force could be any of f, F', F2, or even G. But it is not F. F is already taken.
 

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