AP Physics 2
9.6 Entropy and the Second Law of Thermodynamics
9.4 The First Law of Thermodynamics
A building loses thermal energy to the surrounding outdoor air at a constant rate of \(6000 \text{ W}\) when the interior is maintained at \(27\text{ }^\circ\text{C}\) and the outdoor temperature is \(-3\text{ }^\circ\text{C}\). An ideal heating unit operates on a reversible thermodynamic cycle between the outdoor air and the interior of the building to replace the heat lost at the exact rate it escapes. What is the minimum electrical power input required to operate this heating unit?
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