Question 306840: Plants, which get their carbon dioxide from the air, contain small amounts of carbon-14. Once a plant is cut it no longer forms Carbon-14 and in fact the amount present starts to decay. The half life for Carbon-14 is 5730 years. If a plant had 30 units of Carbon-14 in it when it was cut, find an equation that models the decay of Carbon-14 in this plant.
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Plants, which get their carbon dioxide from the air, contain small amounts of carbon-14.
Once a plant is cut it no longer forms Carbon-14 and in fact the amount present starts to decay.
The half life for Carbon-14 is 5730 years.
If a plant had 30 units of Carbon-14 in it when it was cut, find an equation
that models the decay of Carbon-14 in this plant.
:
The half-life equation
A = Ao*2^(-t/h)
Where
A = resulting amt after t years
Ao = initial amt
t = time in yrs
h = half-life of the substance
:
A = 30*2^(-t/5730)
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