Suppose a radioactive nucleus has a half-life of 2 min. and suppose the counting rate at t = 0 is 3000 counts/s.
- What is the counting rate after 2 min?
- After 6 min?
- After 10 min?
- After 20 min?
- What is the mean life of this nucleus?
- Suppose that the Geiger counter detects 10% of all the radioactive decays. What is the total
- number of radioactive nuclei at time t = 0?
- What is the total number at t = 2 min?
- How many nuclei decay in the first 2 minutes?
- What is the initial decay rate?
- Why is the answer in h. not equal to the answer in i. times 120 sec?