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Homework Help: Beginner Density Problem

  1. Feb 20, 2010 #1
    1. The problem statement, all variables and given/known data
    A proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm and a mass of 1.67 multiplied by 10-27 kg. Determine the density of the proton.


    2. Relevant equations
    Volume=(4/3)pi*r^3
    Density=mass/Volume


    3. The attempt at a solution
    I first got the radius: 1.2 * 10^-15
    To get the volume i did: (4/3)*pi*(radius)^3 and i got 7.2 * 10^-45 as the volume
    To get density i just jiust divided 1.67*10^-27/7.2*10^-45
    and i got 2.31 *10^17 as the answer which is wrong.
     
  2. jcsd
  3. Feb 20, 2010 #2

    Delphi51

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    Homework Helper

    I get the same answer.
     
  4. Feb 20, 2010 #3
    o well. thanks for replying
     
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