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Published byThomasina Lynn Cunningham Modified over 8 years ago
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Energy – The work a physical system is capable of doing Involves energy changing state Example: steam turns a turbine Example: gasoline burns in internal combustion engine Example: steer burns corn to make muscle
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Electricity Mechanical energy Chemical energy Heat Light Thermodynamics deals with the interrelationships between heat and other forms of energy
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The amount of energy in the universe remains unchanged Energy cannot be created nor destroyed It can change form Example: water steam
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C 6 H 12 O 6 + 6O 2 6 H 2 O + 6CO 2 + 673 Kcal The Kcal is the unit we use to measure energy This means that we can measure heat to determine energy conversions in animals Calorimetry is the measurement of heat produced or used during some process Life Combustion
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SourceGross Energy (Kcal/g) Carbohydrate3.7-4.4 (4) Protein5.4-5.9 (5) Fat8.9-9.6 (9)
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