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Zolol [24]
3 years ago
8

The function Q(t)=Qe^-kt may be used to model radioactive decay. Q represents the quantity remaining after t years; k is the dec

ay constant, 0.00011. How long, in years, will it take for a quantity of plutonium-240 to decay to 25% of it's original amount?
Mathematics
2 answers:
Schach [20]3 years ago
6 0
It will take 12602.68 years.

Solution:
Q(t)=Qe^-kt
Q(t)=0.25Q
0.25Q=Qe^-0.00011t
ln 0.25=-0.00011t
t=(ln 0.25)/-0.00011= 12602.67601
Leya [2.2K]3 years ago
5 0

Answer:

12,600 years

Step-by-step explanation:

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