8: Energy Physics and Chemistry
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- 8.6: Kinetic Energy and the Work-Energy Theorem
- The net work Wnet is the work done by the net force acting on an object. Work done on an object transfers energy to the object. The translational kinetic energy of an object of mass m moving at speed v is KE=12mv2. The work-energy theorem states that the net work Wnet on a system changes its kinetic energy, Wnet=12mv2−12mv20.
- 8.7: Thermal Physics
- 8.7.1: Introduction to Thermal Physics
- 8.7.2: Temperature
- 8.7.3: The Ideal Gas Law
- 8.7.4: Heat
- 8.7.5: Heat Transfer Methods
- 8.7.6: Temperature Change and Heat Capacity
- 8.7.7: Phase Change and Latent Heat
- 8.7.8: The First Law of Thermodynamics
- 8.7.9: The First Law of Thermodynamics and Heat Engine Processes
- 8.7.10: Introduction to the Second Law of Thermodynamics- Heat Engines and Their Efficiency
- 8.7.11: Carnot’s Perfect Heat Engine- The Second Law of Thermodynamics Restated
- 8.7.12: Applications of Thermodynamics- Heat Pumps and Refrigerators
- 8.7.13: Entropy and the Second Law of Thermodynamics- Disorder and the Unavailability of Energy
- 8.7.14: Statistical Interpretation of Entropy and the Second Law of Thermodynamics- The Underlying Explanation
- 8.7.E: Thermal Physics (Exercises)
- 8.8: Conservation of Energy
- The law of conservation of energy states that the total energy is constant in any process. Energy may change in form or be transferred from one system to another, but the total remains the same. When all forms of energy are considered, conservation of energy is written in equation form as KEi+PEi+Wnc+OEi=KEf+PEf+OEf, where OE is all other forms of energy besides mechanical energy.