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Homework Help: Need help with homework question. Anyone please thank you !

  1. Oct 10, 2011 #1
    1. The problem statement, all variables and given/known data

    a 50.0g silver spoon at 20.0*C is placed in a cup of coffee at 90.0*c. how much heat does the spoon absorb from the coffee to reach a temperature of 89.0*C

    HOW DO I SOLVE THIS!!!

    and also this question

    Spent Steam from an electric generating plant leaves the turbines at 120.0*C and is cooled to 90.0*C liquid water by water from a cooling tower in a heat exchanger. how much heat is removed by the cooling tower water for each kilogram of spent steam?
     
  2. jcsd
  3. Oct 10, 2011 #2

    NascentOxygen

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    Staff: Mentor

    You need the value of a physical constant known as the specific heat of that metal (silver). If it's not in your textbook, use google.
     
  4. Oct 10, 2011 #3
    so how do i solve it i really dont know this at all.
     
  5. Oct 10, 2011 #4
    heat absorbed from the coffee = [Solution deleted by moderator.]
     
    Last edited by a moderator: Oct 10, 2011
  6. Oct 10, 2011 #5

    Redbelly98

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    Staff Emeritus
    Science Advisor
    Homework Helper

    While the OP has seen the solution that was posted, I'll just remark that there should be a discussion of this topic in the OP's physics textbook, along with the formula relating heat and temperature change, plus a list of specific heat values for different materials.
     
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