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Physics, 11.07.2019 15:00 yzafer3971
Pennies today are copper-covered zinc, but older pennies are 3.1 g of solid copper. what is the total positive charge in a solid copper penny that is electrically neutral?
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Pennies today are copper-covered zinc, but older pennies are 3.1 g of solid copper. what is the tota...
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