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

Question

3 years ago

8

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?

2 answers:

Schach [20] · Answer 1 · 2022-08-20T18:29:30+03:00

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] · Answer 2 · 2022-08-20T20:14:51+03:00

5 0

Answer:

12,600 years

Step-by-step explanation: