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Homework Help: Heat flow

  1. Dec 9, 2003 #1
    Hi everyone. I am doing a physic’s project about Newton’s law of cooling. This project was basically to evaluate the change in temperature between a cup of cooling water and the room temperature as a function of time by using different methods of heat retention (via convection & evaporation, conduction, radiation.) I have to prove that these methods are consistent with Newton’s law of cooling, which indicates that a ÄT to be an exponential function of the elapsed time. However, I know that Newton’s law of cooling does not work if radiation is significant and evaporating cooling is significant. I really don’t understand why those two things effect it the most. Can anyone tell me why or direct me to a website that could help me.
    Thanks for your help in advance.
  2. jcsd
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