(Answered) A block of copper has a mass of 100 kg and an initial

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A block of copper has a mass of 100 kg and an initial temperature of 900 K. Copper can be modeled as an incompressible substance with a specific heat capacity of 0.4 kJ/kg-K.

a.) The copper block is dropped into a large lake at 300 K and allowed to come to thermal equilibrium. How much entropy is generated (kJ/K)?

b.) If a reversible heat engine were connected between the lake and the copper block and operated until the temperature of the copper block reaches the temperature of the lake then how much work (kJ) could be produced?

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