SCI-M 216 THERMODYNAMICS LECTURE Chapter Notes -Thermodynamics, Joule, Air Compressor
11 Feb 2023
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One of the most fundamental laws of nature is the conservation of energy principle. It simply states that during an interaction, energy can change from one form to another but the total amount of energy remains constant. That is, energy cannot be created nor destroyed. Example: a rock falling off a cliff. Pe1= mgh1 = 10 kg (9. 81 m/s^2)(10 m) = 981 j te1 = 981 j. Law of conservation of energy states that energy is neither created nor destroyed. First law of thermodynamics states that one form of energy may be converted into another. Energy = is the ability to do work, or can be viewed as the ability to cause changes. U h pv: heat = (1) is energy perceived as temperature: it is felt as temperature, especially as warmth or hotness; (2) is energy in transit from one body or system to another because of temperature difference.
