Physics 1029A/B Chapter Notes - Chapter 7-11: Ideal Gas Law, Electric Potential Energy, Thermal Equilibrium

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Work: the effort made when we exert forces. Different from forces: has lasting effect on the person performing the work. Energy can be present in various forms in a system. If not in mechanical equilibrium, can be converted between potential and kinetic energy. Interaction of two objects can result in energy transferred. Kinetic energy: energy stored in the speed of an object. Potential energy: energy stored in the position relative to ground level. Second law does not include first law when a=0 because . Newton"s first law focuses on the equilibrium state of a system. The equilibrium concept links mechanics to thermodynamics and later to stationary fluids and electrostatics. Newton"s second law deals with dynamic changes of the state of a system. The dynamics concept links mechanics to chemical kinetics and non-equilibrium thermodynamics processes, as well as fluid dynamics and the flow of electricity. A system is in equilibrium when all its essential physical parameters are time independent.

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