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Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star
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Do you agree with scientist’s prediction about the warming of alaska and other polar regions?
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Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
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Two point charges are brought closer together, increasing the force between them by a factor of 32....
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