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are warming up 2 kg of soup in a pot on a stove. The soup...
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Mechanical Engineering
Youare warming up 2 kg of soup in a pot on a stove. The soup (C=4kj/kg/K) starts at 4ºC. You have it on a heating element that isdrawing 1.2 kW of power. 15% of the heat from the element is goingdirectly to the air. Of the heat going into the pot, 20% is lost byheat transfer to the room. You are stirring vigorously and add 25KJ of energy to the pot. How long will it take for your soup toreach 70ºC? Ignore the energy going into the pot.
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