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Initially a sample of radioactive nuclei of type A contains 4 times as many nuclei as...

  1. Initially a sample of radioactive nuclei of type A contains 4 times as many nuclei as a sample B. 2 days later the samples both have the same number of nuclei.
  1. Which sample has the longer half life?
  2. Determine the half life of B if the half life of A is 0.5 days.
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