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Calculate the Change in entropy of the universe

  1. Apr 28, 2012 #1
    1. The problem statement, all variables and given/known data

    Calculate the changes in the entropy of the universe for

    a) A copper block of mass 0.5kg is dropped into a lake of 10 degrees with the block having a thermal capicity of 2J/K and a temperature of 100 degrees

    2. Relevant equations

    dS=dQ/T


    3. The attempt at a solution

    ok so I know how to do the question but i am confused on 1 thing;

    do i integrate dS=mcdT/T so dQ=mcdT or do i use just dQ=C(t) because it gives me the thermal capacity not the specific heat.
     
  2. jcsd
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