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Find the change in the force of gravity between two planets when the distance between them is decreased by a factor of 5.

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asked by Katie
  1. Isn't the force inversely proportional to the distance squared?

  2. That's what I believe it is, but I'm not sure... ?

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    posted by Katie
  3. Well it is, so square (1/5) to get the answer

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    posted by drwls
  4. 150 billion

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