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The gold wire problem

  1. Oct 5, 2010 #1
    1. The problem statement, all variables and given/known data
    one ounce of gold (taken to be 28.35g) can be pulled or drawn into a monofilament wire that can be up to 50km in lenght

    true or false

    support your argument with some evidence

    2. Relevant equations
    atomic mass of gold ,Au= 196.96
    avagardo's number=6.02x1023 atoms/mole
    approx. radius of a single gold atom r=10-10 m
    volume of sphere=4XpieXr3/3


    3. The attempt at a solution
    one ounce of gold X atomic mass ?
     
  2. jcsd
  3. Oct 5, 2010 #2

    berkeman

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    Staff: Mentor

    Welcome to the PF!

    What is the volume of 1oz of gold? What is a reasonable diameter for a thin monofilimanet wire? What would the volume be of such a wire at the length asked about in the question?
     
  4. Oct 5, 2010 #3
    a reasonable diameter for the monofilament could be 0.25??? work out the volume of this and times and times the answer by 50 ?
     
  5. Oct 5, 2010 #4

    berkeman

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    Staff: Mentor

    0.25 what, for goodness sake?!

    And you don't multiply volume by distance to get volume again....
     
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