Question

strontium 90 is a radioactiver material that decays according to the functionA(t)=Aoe^-0.0244t, where a 0 is the initial amount present and a is the amount present at the time t( in years). Assume that a scientist has a smaple of 400 grams of strontium 90.
how much strontium 90 is left after 30 years?
when will only 300 grams of strontium 90 be left?
what is the half life of strontium 90?

Answer 1

help