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Possible source of error in this lab?

  1. Oct 15, 2009 #1

    Suy

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    1. The problem statement, all variables and given/known data
    http://img245.imageshack.us/img245/7259/12214351.jpg [Broken]


    2. Relevant equations



    3. The attempt at a solution
    I have no idea,
    the previous lab i put gravity depend on location, but the teacher marked me wrong
    If anyone can give me some hints, and i need 3...
    I don't know if this 2 are right
    electrical resistance
    temperature
    ty!
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Oct 15, 2009 #2

    ideasrule

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    Homework Helper

    Well, Laura can't exactly make the magnetic field disappear for the wire outside the 0.025 m section she's considering. The ammeter is also going to be inexact. There might also be some problems with the magnet's field being non-uniform, but unfortunately we don't know what exactly she's trying to measure here.
     
  4. Oct 16, 2009 #3

    Suy

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    ty for replying!
    i have the data,
    http://img49.imageshack.us/img49/7951/19681882.jpg [Broken]
     
    Last edited by a moderator: May 4, 2017
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