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A 110.-g sample of copper (specific heat capacity 0.20 J/C g) is heated to 82.4C and then placed in a container of water at 22.3C. The final temperature of the water and copper is 24.9C. What is the mass of the water in the container, assuming that all the heat lost by the copper is gained by the water?
The Brayton cycle has the same 4 processes as the Rankine cycle, but the T-S and P-V diagrams look very different, why is that?
Determine the energy and entropy balances and compare the efficiency of this process to the simple vapor-compression cycle without recirculation.
Derive the following equation for the optimum outside diameter of insulation on a wire for maximum heat loss:
find the current from the supply source. Sketch the phasor diagram showing all quantities involved.
Compute the worst voltage regulation and the power factor at which it occurs, when the transformer is delivering rated output at rated secondary terminal voltage of 240 V. Sketch the corresponding phasor diagram.
Calculate the magnitude of the electric field at the ball's location due to the charged wall, and state its direction relative to the coordinate axes shown.
The process produces a net amount of work equal to 4,500 J/mol and it exchanges an unknown amount of heat with the surroundings. Determine the amount of heat exchanged with the surroundings. Is this heat absorbed or rejected by the system?
If the exciting coil carries a steady direct current I, derive an expression for the force on the plunger.
Calculate the ratio of the network over the amount of heat absorbed at the high temperature of the cycle. How does this value compare to the theoretical efficiency of the Carnot cycle that is calculated based on the two operating temperatures?
The product is neutralized and washed with water to remove salts. The washed product is usually separated by batch distillation, in which unreacted feeds are recovered first, followed by product, and a polymeric waste is left as residue. The batch..
The dc resistance of the armature at this temperature is 0.0335 Ω per phase. Compute the effective armature ac resistance in per unit and in ohms per phase at 25°C.
If a calorimeter contains 1.00 kg water and has a total heat capacity of 10.84 kJ/C, what is the heat capacity of the calorimeter components?
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