This problem uses radioactive isotopes. I need to find the amount of grams after 4000 years. I'm given:
Isotope:14-C
Half-life (years): 5715
Initial Quantity: 15 g
Amount After 4000 Years: ?? g
Also unsure as to starting this one.
Let t denote the time measured in years, A_0 the initial amount and A(t) the amount after t years. Then A(t) is given by:
where k is a constant which you have to calculate first.
You already know: If the initial value is A_0 then . That means:
. Solve for k. I've got
Now calculate A(4000) with