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Explain why electric current cannot exist if a current doesn't have a voltage source.
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Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.
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Two railroad cars, each of mass 7650 kg and traveling 95 km/h in opposite directions, collide head-o...
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