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In a certain binary-star system, each star has the same mass which is 3.2 times of that of the Sun, and they revolve about their center of mass. The distance between them is the 6.3 times the distance between Earth and the Sun. What is their period of revolution in years?
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If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?
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In a series circuit the __ is the same at every point
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In a certain binary-star system, each star has the same mass which is 3.2 times of that of the Sun,...
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