Follow Repeated Half-Life Intervals - Practice 1

5 questions0m 0s

Learn the skill

In an ideal exponential-decay model, the expected undecayed amount halves each half-life. Count the number of equal intervals. Individual decays are random; small exact particle counts need not follow the expectation precisely.

Worked example

An expected amount of 80 units becomes 40, then 20 after two half-lives. It is not reduced by 40 at every step.

Question 1 Ideal decay model 1 starts with 10 amount units. What expected amount remains after 1 half-lives? Answer

Question 2 Ideal decay model 2 starts with 24 amount units. What expected amount remains after 2 half-lives? Answer

Question 3 Ideal decay model 3 starts with 56 amount units. What expected amount remains after 3 half-lives? Answer

Question 4 Ideal decay model 4 starts with 128 amount units. What expected amount remains after 4 half-lives? Answer

Question 5 Ideal decay model 5 starts with 18 amount units. What expected amount remains after 1 half-lives? Answer