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Ch 24: The Second Law of ThermodynamicsWorksheetSee all chapters

# Heat Engines and the Second Law of Thermodynamics

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Sections
Heat Engines and the Second Law of Thermodynamics
Heat Engines & PV Diagrams
The Otto Cycle
The Carnot Cycle
Refrigerators
Entropy and the Second Law of Thermodynamics
Entropy Equations for Special Processes
Statistical Interpretation of Entropy

Concept #1: Introduction to Heat Engines

Practice: An aircraft engine takes in 9 kJ of heat and expels 6.4 kJ of heat each cycle. How much mechanical work does the engine do each cycle?

Example #1: Power Output of a Gasoline Engine

Practice: A heat engine uses a tank of ice water as a cold reservoir. The engine takes in 8 kJ of heat from the hot reservoir, and the heat expelled melts 18g of ice in the tank. How much work does this engine do?

Concept #2: Thermal Efficiency & The Second Law of Thermodynamics

Practice: A steam turbine takes in 75g of water and boils it as heat energy to run a 40% efficient engine. How much work does this engine do per cycle?

Example #2: Efficiency of a Nuclear Power Plant