Applying the Energy BalanceAs shown in Fig. P3.89, a
Chapter 3, Problem 89P(choose chapter or problem)
As shown in Fig. P3.89, a system consists of a copper tank whose mass is \(13 \mathrm{~kg}, 4 \mathrm{~kg}\) of liquid water, and an electrical resistor of negligible mass. The system is insulated on its outer surface. Initially, the temperature of the copper is \(27^{\circ} \mathrm{C}\) and the temperature of the water is \(50^{\circ} \mathrm{C}\). The electrical resistor transfers \(100 \mathrm{~kJ}\) of energy to the system. Eventually the system comes to equilibrium. Determine the final equilibrium temperature, in \({ }^{\circ} \mathrm{C}\).
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