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HalfLife when quantity is not given

  1. May 4, 2010 #1
    1. The problem statement, all variables and given/known data
    "Tritium is the basic fuel of hydrogen bombs and is used to increase the power for fission bombs . . . In a basic atom bomb (or reactor), plutonium atoms are split, or fissioned, to release energy, but the fission can be promoted with a small amount of tritium because it has two extra atom-splitting neutrons. Plutonium is a relatively stable material, and its natural decay is not a major factor in bomb maintenance. Tritium, however, decays at a rate of 5.5 percent a year."
    What is half life given the above?

    2. Relevant equations

    e^-rt

    3. The attempt at a solution
     
  2. jcsd
  3. May 4, 2010 #2

    mgb_phys

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