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Metric Prefixes.

  1. Aug 28, 2010 #1
    I've just started in Physics ADV and it's completely greek to me.
    The question i'm currently stuck on is-

    A human hair is approximatly 50[tex]\mu[/tex]m in diameter. Express this diameter in meters.

    I'm not sure how i'm suppost to work or even set up the problem.
    Please help if you can.
    (:
    Thanks.
     
  2. jcsd
  3. Aug 28, 2010 #2

    rock.freak667

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    Do you remember your unit prefixes?

    For example cent=c=10-2

    milli=m=10-3
     
  4. Aug 28, 2010 #3
    Yes, the unit is 10-6


     
  5. Aug 28, 2010 #4

    rock.freak667

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    Right so if you diameter is 50μm and μ=10-6, then the diameter is?
     
  6. Aug 28, 2010 #5
    This is what i'm confused about. I'm not sure what i'm suppost to do after this.
     
  7. Aug 28, 2010 #6

    rock.freak667

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    Just replace 'μ' with '10-6' (it is that simple :wink:)
     
  8. Aug 28, 2010 #7
    So then it's 50x10-6?

    If yes, how am I suppost to get it so that it's just in meters?
     
  9. Aug 28, 2010 #8

    rock.freak667

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    remember it is 50μm, so the 'm' will remain, giving 50x10-6m
     
  10. Aug 28, 2010 #9
    Oh, okay. Thanks so much.
    (:
     
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