Radioactive Decay You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. You purify a sample of 2 grams. One of your colleagues steals half of it, and 3 days later you find that 0.1 grams of the radioactive material is still left. What is the half-life? (Round your answer to 3 significant digits.) HINT [First find an exponential model, then see Example 4.]
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