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Homework Help: Work problem. Right answer, wrong units

  1. Feb 19, 2007 #1

    tony873004

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    My answer should obviously be in Newtons, but I'm getting Netwon meters.

    An aquarium, 2 m long, 1 m wide, and 1 m deep is full of water. Find the work needed to pump half the water out of the aquarium. (The density of water is 1000 kg/m3.)
    6_4_19.gif

    In a similar example in the book, they do the problem the same way, but they just throw the units in at the end, after they've computed the answer. I could do the same on this homework problem and get full credit, but I just gotta know... :smile:
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Feb 19, 2007 #2
    What makes you think that unit is wrong? What's the definition of work?
     
  4. Feb 19, 2007 #3

    tony873004

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    oops... It's getting late. I don't know why I was expecting Newtons. Thanks!
     
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