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Homework Help: Energy required to expand V of cylinder

  1. Dec 4, 2008 #1
    1. The problem statement, all variables and given/known data

    Calculate the work done when the volume of a cylinder is increased by 90.0 L against the atmospheric pressure. Think about the upward movement of a piston as it expands the volume of a cylinder.

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    I am actually an AP Chemistry student and am supposed to do this problem using unit analysis as I am not taking AP Physics. However, I have taken Grade 11 Physics.

    Thank you for your help!

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    My Work:

    Since 1 L = 0.001 m3, then 90.0 L = 0.0900 m3.

    Since 1 Pa = 1 N/m2, then 1.013E5 Pa = 1.013E5 N/m2.

    In order to get Nm = J = work:

    1.013E5 N/m2 x 0.0900 m3 = 9,117 Nm = 9117 J = 9.12 x 103 J.
     
  2. jcsd
  3. Dec 5, 2008 #2

    LowlyPion

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    Homework Helper

    That looks correct.
     
  4. Dec 6, 2008 #3
    Thank you for your response!
     
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