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Homework Help: Ratio and density

  1. Jan 29, 2005 #1
    A newly discovered giant planet has an average radius 13 times that of the Earth and a mass 963 times that of the Earth. Calculate the ration of the new planet's density to the Earth's density.
  2. jcsd
  3. Jan 29, 2005 #2
    Find the volume of the new planet and hence its density, then divide that by the density of the Earth (you won't even need to do that numerically).
  4. Jan 29, 2005 #3
    ok so this is what i did, 5.942x10^24 kg X 963/(169PI) = density that right?
  5. Jan 29, 2005 #4
    i got 1.077760735e 25
  6. Jan 29, 2005 #5
    still getting it wrong but now i have the density of the new planet as 2.663709251E17/ density of earth 5515E3? (right?)
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