Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Chapter14 Temperature and heatGoals:The zeroth law of thermodynamics Thermometers and thermal equilibriumVolume expansionQuantity of Heattwo576 food calories = cal310*576Convert to joulesJcalJcal6310*4.2)1186.4(10*576 Specific heatPhase changesHeat of combustion6Kfood14.6 Example person with feverHeat Transfer1.1. Conduction:2. Convection3. Radiatione = emissivity (dimensionless)e = 1 blackbodyEmissivity varies zero to oneEmissivity of the earths atmosphere varies with cloud cover (on a clear sky e =1)3. Radiation574 W.7644)k11.83 Jogging in the heat of the
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