Physics, 07.09.2019 02:10 nathaliapachon1254

(a) how many electrons would have to be removed from a penny to leave it with a charge of +1.0×10−7 c? [4] (b) to what fraction of the electrons in the penny does this correspond? [6] [a penny has a mass of 3.11 g; assume it is made entirely of copper.]

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