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How many ways can you determine density?

  1. Dec 3, 2014 #1
    D=m/V

    I've know that there is water displacement for volume and also V=4/3πr2 (object is a ball)

    Is there any other way to determine density that does not involve directly finding volume?
    I figure that if the object floats (and is not hollow) it is less dense than water, and if it sinks it is more dense, but can I get exact numbers from a similar method to this?
     
  2. jcsd
  3. Dec 3, 2014 #2

    Danger

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    I suppose that you might be able to determine the atomic structure somehow (aside from looking it up, I mean). That should eventually lead to specific gravity.
     
  4. Dec 3, 2014 #3

    SteamKing

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    You haven't mentioned a problem measuring the mass of the ball. Why is measuring the volume of the ball a problem for you?
     
  5. Dec 3, 2014 #4

    Bystander

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    X-ray diffraction patterns yield internuclear spacing in lattices which can be used to calculate densities from packing fractions for lattice types and atomic masses (from mass spectrometry).
     
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