NATS 1840 Lecture Notes - Electromagnetic Field, Photosynthesis, Time 100
24 Feb 2014
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Document Summary
The ability of a system to move matter through some distance. The ability a system to perform mechanical work. Some are closely associated with tangible physical objects, such as atoms. Other forms, such as the energy carried by light, are less tangible. We will be mainly concerned with: kinetic energy, potential and internal energy, thermal energy, electromagnetic energy. A moving object has the ability to do physical work. Intutively, a faster object can do more work than a slow moving object and a more massive object can do more work than a light object. Kinetic energy increases with speed and mass. Potential energy: represents the ability to do work that is stored in a physical system that isn"t in motion. Difference of electric charge between objects (electricity) (battery, electric generator) Binding of two or more atoms (chemical energy) Stored energy is the result of mechanical work that was done against a force at some prior time.
