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Nuclear Reactions and Half Life Sample Problems

  1. N-13 has a half life of ten minutes. If you start with 2 grams, how much remains after 40 minutes?
  2. After 10.4 hours, you have 0.625 mg remaining of an original 10 mg sample of Mn-56. What is its half-life?
  3. The half-life of Ge-68 is 9 months. How much remains of an original sample size of 35 g after 3.0 years?
  4. The half-life of a radioactive substance is 4.5 days. 3 g remains after 2 days of decay. What was the original sample size?
  5. The decay constant of a given nucleus is 5.4 x 10-3/sec. What is its half-life? How much remains of an initial 100 g sample after 6 h?
  6. 45 g of an original 1 kg sample of a radioactive material remains after 2.2 h. What is the decay constant of the radioactive material?
  7. 0.30 g remains of an original 1 g sample of a radioactive substance after 45 h. What is the half-life?
  8. You have 2 g of an original 40 g sample after 50 min. What is the half-life?

  9. problem 1

  10. problem 2

  11. problem 3

  12. problem 4

  13. problem 5

  14. problem 6

  15. problem 7

  16. problem 8

  17. problem 9

  18. problem 10

    Nuclear Physics Notes

    Nuclear Physics Homework