- #1
Bikkehaug
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Homework Statement
Plutonium is a radioactive waste.. etc. A mass og 1.000 kg will after x years be reduced to:
m(x) = 1.000 * e-2.89*10-5x
The yearly Waste of plutonium is 1kg. The total plutonium mass after N years is given by:
∫m(x)dx where the upper value of the integral is N, and the lower value is 0 (not sure how to Write this directly into the formula)
Compute the integral, and estimate the total waste of plutonium after a long time.
Homework Equations
The Attempt at a Solution
Solving the integral: ∫1.000 * e-2.89*10-5x dx
= [[itex]\frac{1}{-2.89*10^-5}[/itex] * e-2.89*10-5x ] Again, the higher value is N, the lower value is 0.
If I plot a graph of this Equation, I get a linear graph With the mass after, say 5000 years is 5000kg. After 3 years the mass is 3kg.
Does anyone have any idea about how I can proceed from this?