The half-life of Radium -226 is about 1600 years. After 3000 years, what percentage P(t) of a sample of radium-226 remains. Assume you start with 100% = a
Aurora2000
Nov 22, 2011, 08:43 AM
The formula for the exponential decay process is
N(t)= \left(\frac{1}{2}\right)^{t/T}
where T stands for the half life time, and N(t) the fraction of not decayed part after time t.