A steel casting |C, = 0.5 kJ kg K] weighing 40 kg and at a temperature of 450°C is quenched in 150 kg of oil [C, - 2.5 kJ kg K| at 25C. If there are no heat losses, what %3D is the change in entropy of (a) the casting, (b) the oil, and (c) both considered together?
A steel casting |C, = 0.5 kJ kg K] weighing 40 kg and at a temperature of 450°C is quenched in 150 kg of oil [C, - 2.5 kJ kg K| at 25C. If there are no heat losses, what %3D is the change in entropy of (a) the casting, (b) the oil, and (c) both considered together?
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Transcribed Image Text:A steel casting |C, = 0.5 kJ kg K) weighing 40 kg and at a temperature of 450°C is
quenched in 150 kg of oil [C, - 2.5 kJ kg' K'| at 25°C. If there are no heat losses, what
is the change in entropy of (a) the casting, (b) the oil, and (c) both considered together?
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