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Bullet water Heat question

  1. Jan 17, 2008 #1
    1. The problem statement, all variables and given/known data

    How fast would a 4.54g bullet have to be traveling so that it increased the temperature of 1.00 L of water by 1.30oC if it gave all of its kinetic energy to the water?

    2. Relevant equations
    i don't know what equation to use i have two of them but its seems they don't apply to this problem

    mgh-.5MVf^2=q

    q=cM(Tf-Ti)
    q=C(Tf-Ti)




    3. The attempt at a solution

    please point me in the correct direction so i can attempt the problem
     
  2. jcsd
  3. Jan 17, 2008 #2

    berkeman

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    Staff: Mentor

    What unit of energy does it take to raise water by 1C? How do you convert from that into MKS units of energy? What is the kinetic energy of the bullet (your equation above is not correct -- close, but not right)?


    Hint: http://en.wikipedia.org/wiki/Calorie
     
  4. Jan 17, 2008 #3

    Shooting Star

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    Homework Helper

    You have only one eqn, viz., that of energy conservation. (Use CGS and then convert to SI, as had been advised.)
     
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