2a)Suppose 1.6 × 1020 electrons move through a pocket calculator during a full day’s operation.How many coulombs of charge move through it?
2b)To start a car engine, the car battery moves 3.6 × 1021 electrons through the starter motor.How many coulombs of charge are moved?
2cTwo point charges exert a 3.5 N force on each other.What will the force become in N if the distance between them is increased by a factor of three?
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