annalyosairy annalyosairy

25-01-2024
Physics

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A copper penny has a mass of 3.0 g. In copper, about one electron per atom is free to move about. These electrons are the "free charge." (a) What percentage of the free charge would have to be removed to give the penny a charge of 15 microCoulombs? (b) What would be the force of repulsion between two pennies carrying this charge if they were 25 cm apart?

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