character: Mrs. Johnson
topic: Heat Engines and Efficiency
grade: 10
subject: Physics
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character: Mr. Smith
topic: Thermodynamics in Heat Engines
grade: 10
subject: Physics
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character: Ms. Lee
topic: Types of Heat Engines and Their Work
grade: 10
subject: Physics
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character: Dr. Brown
topic: The Second Law of Thermodynamics and Efficiency
grade: 10
subject: Physics
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