Give an explanation of how food energy (calories) can be viewed as molecular potential energy (consistent with the atomic and molecular definition of internal energy).ħ. If you run down some stairs and stop, what happens to your kinetic energy and your initial gravitational potential energy?Ħ. How do heat transfer and internal energy differ? In particular, which can be stored as such in a system and which cannot?ĥ. Give an example of each type of energy, and state specifically how it is either in transit or resides in a system.Ĥ. Heat transfer \(\displaystyle Q\) and work done \(\displaystyle W\) are always energy in transit, whereas internal energy \(\displaystyle U\) is energy stored in a system. How do they differ in the types of energy considered?ģ. The first law of thermodynamics and the conservation of energy, as discussed in Conservation of Energy, are clearly related.
How is heat being transferred? What is the work done and what is doing it? How does the kettle maintain its internal energy?Ģ. Describe the photo of the tea kettle at the beginning of this section in terms of heat transfer, work done, and internal energy. 15.7: Statistical Interpretation of Entropy and the Second Law of Thermodynamics: The Underlying Explanationġ.15.6: Entropy and the Second Law of Thermodynamics: Disorder and the Unavailability of Energy.15.5: Applications of Thermodynamics: Heat Pumps and Refrigerators.15.4 Carnot’s Perfect Heat Engine: The Second Law of Thermodynamics Restated.15.3 Introduction to the Second Law of Thermodynamics: Heat Engines and Their Efficiency.
15.2: The First Law of Thermodynamics and Some Simple Processes.
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