Hi, I need some help setting up this problem properly
Problem:
After 23 days a 10-milligram sample of radioactive material decays to 5 milligrams. After how many days will there be 1 milligram of the material?
thanks!
where m(t) is the mass of the material at a given time t, is the initial amount of mass m(0), is the half-life, and t is the time elapsed.
So we know that
We need to solve this for .
/day
So
We wish to find out when m(t) = 1 mg.
Solve this like the preceding problem. I get days.
So 76.4 days or so.
-Dan