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Initially, an insulated rigid tank contains 18.67 kg of water at 21.45oC and 101 kPa. The tank also contains a 3.66 kg copper block at 83.32oC. Assume constant specific heats where Cwater = 4.179 kJ/kg-K and CCu = 0.385 kJ/kg-K. Determine the total entropy production (kJ/K) after one hour assuming thermal equilibrium is achieved.
Energy in the home, personal energy use and home energy efficiency and Efficient use of ‘waste' heat and renewable heat sources
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A square 3m x 3m gate is located in the 45* sloping side of a dam. Some measurements indicate that the resultant force of the water on the gate is 500kN.(a)Determine the preassure at the bottom of the gate.(b)Show on a sketch where this force acts..
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