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Homework Help: Heating Water

  1. Jun 22, 2010 #1
    Why heating water at 90C takes longer than heating water at lower temperatures such as 70C?
  2. jcsd
  3. Jun 22, 2010 #2
    I never heard of this before. But I can't give you an answer since I don't know much about heat transfer.
  4. Jun 22, 2010 #3


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    Because a lower initial temperature requires more energy to reach a set point? Water heats linearly (generally) between 0C and 100C (STP) ... 4186j/C or so.
  5. Jun 22, 2010 #4


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    You need to show your work. We cannot give you answers.

    Why do you think it takes longer?
  6. Jun 22, 2010 #5
    does the specific heat capacity has something to do with this?
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