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A Question about Spacetime

  1. Dec 23, 2014 #1
    What is the velocity of a person's blood flow relative to the earth?
  2. jcsd
  3. Dec 23, 2014 #2

    Doug Huffman

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    Velocity varies in direction and magnitude.
  4. Dec 23, 2014 #3

    Vanadium 50

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    Why is this a question about spacetime?
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