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Homework Help: Solid or hollow

  1. Jul 6, 2010 #1
    I got a small conserning how to determine if a object is solid or hollow.
    "Verify if a copper object with density of 8,96 g/m^3, which weights 2,8N on the air and when submersive on water (p=998 kg/m^3) weights 1,3N, is it solid or hollow?"
  2. jcsd
  3. Jul 6, 2010 #2

    Doc Al

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    Staff: Mentor

    How could you solve for the density of the object? (Note that the density given for copper should be in g/cm^3, not g/m^3.)
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