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1 chapter · 11 notes · all free

1. Principle of Measurement of TemperatureA wooden and an iron ball at the same temperature, yet the iron one feels colder. So how do we really measure temperature?
2. First Law of ThermodynamicsWhy does a bicycle pump get hot when you press it? Where did the work go?
3. Thermal System and Isothermal ChangeA fast pump stroke heats the barrel, a slow one does not. When does a gas keep its temperature?
4. Adiabatic ChangeWhy does a pump barrel warm up when no heat is given?
5. Molar Specific HeatWhy does the same 1 K of warming take more heat at constant pressure? Where does the extra go?
6. Internal Energy, Heat and WorkDoes a body contain heat? And where is a gas's work hiding on the P-V graph?
7. Second Law of ThermodynamicsHeat runs from hot to cold by itself. Why never the other way?
8. Reversible and Irreversible ProcessesWhy does a broken glass never join up again, and which processes can go back?
9. Carnot CycleAn engine nobody can build, yet every heat engine is measured against it. Can you name its four steps?
10. Heat Engine and RefrigeratorOne picture, arrows reversed: an engine gives work, a fridge eats it. Do you remember to use kelvin?
11. Entropy and DisorderHot tea cools but cold tea never warms itself. Why?

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