You hold a ruler that has a charge on its tip 4 cm above a...
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Physics
You hold a ruler that has a charge on its tip 4 cm above a smallpiece of tissue paper to see if it can be picked up. The ruler has−14 µC  of charge. The tissue has 1 g of mass. What isthe minimum charge required to pick up the tissue paper?
Answer: ___ µC
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We have to overcome the force of
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