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Homework Help: Gr 11. Thermal Energy *help*

  1. Oct 8, 2004 #1
    Does anyone know why I end up with the wrong answer?
    The question is:
     
  2. jcsd
  3. Oct 8, 2004 #2
    Make sure you are consistent in units. Also remember to include signs in your calculations to indicate gain/loss of energy.
     
  4. Oct 9, 2004 #3
    Hope this helps

    Firstly just change the 232 kJ into joules so you that have 232000 J.

    q = mc delta t
    232000 = 10 * 4200 * delta t
    delta t = 232000/10*4200
    delta t = 232000/42000
    delta t = 5.5
     
  5. Oct 9, 2004 #4

    Diane_

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    Homework Helper

    Was there any particular reason why you posted this twice?
     
  6. Oct 12, 2004 #5
    Nope I just mest up...
     
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