Question

the half-life of caffeine in a person's bloodstream is about 6 hours. if a person's bloodstream contains 80 milligrams of caffeine, how much of that caffeine will remain after 14hours?

Answer 1

post this in physics section..

Answer 2

its not a physics question, its a math problem. that is why i posted it on here

Answer 3

hmm maybe if it's a diffrential problem..
as decay and nuclear things are in physics u might get many people to answer this in that section but best of luck here.

Answer 4

thanks

Answer 5

Do you know the expinential decay formul?

Answer 6

Its A(t) = A(o)(c)^(t/p)

Answer 7

A(t) is the ammount remaining after time t

A(o) is the initial ammount

C is where you put 1/2 for half life, 2 gor doubling etc...

t is the time passed.

P is the time for the doubling, half etc...

Answer 8

ok

Answer 9

So in your case a(6)=(80)(1/2)^(14/6)

Answer 10

Or about 15.87 mg.

Answer 11

i got it thanks

Answer 12

Welcome! :)

Answer 13

Or about 15.87 mg.