Unformatted text preview: o Quality of energy changes even when quantity is constant o Anytime work is done, energy quality drops o Efficiency o Property of an engine o 1000 Joules (max quality) system 800 Joules 4. Two Types of Systems o Closed System Where energy does not get in or out (must eventually “run down” o Open Systems Energy both enters and exits (can continue to run because it can constantly bring in energy, if energy funnels through the system, the system may appear to violate the second law of thermodynamics) o Humans are open systems; we eat. o Organisms always make messes in their surroundings. Cave Ecosystems (Engine) tightly bounded There is no sunlight, where is the energy coming from? Organisms moving in and out of the cave created low levels of energy....
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This note was uploaded on 09/14/2011 for the course BIO 1001 taught by Professor Staff during the Fall '08 term at Cornell.
- Fall '08