CH-1010 Lecture Notes - Lecture 3: Kinetic Energy, Potential Energy, Thermodynamics
14 Mar 2018
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Energy: capacity to effect change or to do work. Potential energy: stored because of position or composition. Thermal energy: temp and phase of an object. Heat is a quantity of energy transferred because of a temperature difference. Always from higher t object to lower t object. Use the symbol d (delta) to indicate a change. The change in temperature of a substance it its final temperature minus its sta temperature. Use 1st law of thermodynamics to keep track of energy changes. It can only be converted from one form. The total energy of the universe is constant. Particles increase in kinetic energy (thermal energy) as the ice becomes water. System the substance undergoing the phase change its starting one form to another water ngs m o o o. System the substance undergoing the phase change. The 1st law requires that the total energy change in the system and surroundings m. D or change final amount initial amount o.
