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Lotto
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- TL;DR Summary
- We can say that the balloon has a center of mass circa in the middle. When we charge the balloon so that charge density is everywhere the same, can we say that the center of the total charge is in the middel as well?
Doing so, we can consider the balloon to be a point charge (approximately). Can we do it in this case, when there are only electrons on its surface? Or is it stupid and we can't do it under any circumstances?