Lect16-ch14_2

# Lect16-ch14_2 - L16Ch14 Spring 2004 PHY 2053C College...

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1 1 Spring 2004 PHY 2053C: College Physics A Today: Heat Ca l or i metry --Spe c f Heat and --Latent Heat Heat Tran s fer: --Condu t on , --Conve and --Rad at \\ Mot For e s, Energy Heat Wave Dr. David M. Lind, Dr. Kun Yang, and Dr. David Van Winkle L16—Ch14 1 Announcements There will be one makeup-lab for any who have missed class because of illness or because of closure of the university due to hurricanes . The makeup dates will be Tuesday, Nov. 9 and Thursday, Nov 11 . Not all eight sections will meet. You may come to either the Tuesday or Thursday sections to make up the missed labs. Your TA’ s will announce more on these make-ups during this week’s classes. Because of these changes the “Waves” and “Simple Harmonic Motion” lab dates will also be shifted. (See the syllabus on the web for the changed dates for these labs.)

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2 1 Real Gases, Condensation : Water and Vapor Raise pressure or lower temperature condensation . (gas to liquid) gas and liquid co-exist (vapor) until all is converted. T =high T =low P V P T(°C) pV nRT review: 1 Heat Originally, heat was thought to be a separate quantity, connected to Temperature. Heat is energy . Mechanical energy can become heat through friction. symbol: Q unit: 1 J = “1 Joule” unit: 1 cal = Heat required to raise 1g of Water: Temp +1 C ° (1 kcal = 1 Cal) J ame s Pre c ott ou l e (1818-1889): showed that you can raise temperature by mechanical work Q KE mgh review:
3 1 Calorimetry When heat is added to or

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Lect16-ch14_2 - L16Ch14 Spring 2004 PHY 2053C College...

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