Question

Consider a radioactive sample with a half-life of one week. How much of the original sample will be left at the end of the second week? The third week? The fourth week?

Answer 1

1st week: 1/2
2nd week: 1/4
3rd week: 1/8
...

Answer 2

Thank you, so if I am understanding this correctly, each cycle is being cut each week by half.

Answer 3

yes. the half-life is how long it takes for the remaining amount to go down by 1/2. Since the half-life is given as 1 week, that means that each week there is only half as much at the end of the week as there was at the beginning of that week.

Answer 4

Thank you for your help.

Answer 5

Consider a radioactive sample with a half-life of one week.

How much of the original sample will be left at the end of the second week?
The third week? 3rd week n will be equal to 3, so amount left = 123 = 0.125 = 12.5%
The fourth week?

Answer 6

1/16