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anonymous
 4 years ago
One of the main contaminants of a nuclear accident, such as that at Chernobyl, is strontium90, which decays exponentially at a rate of approximately 2.5% per year.
(a) Write the ratio of strontium90 remaining, p , as a function of years, t , since the nuclear accident.
anonymous
 4 years ago
One of the main contaminants of a nuclear accident, such as that at Chernobyl, is strontium90, which decays exponentially at a rate of approximately 2.5% per year. (a) Write the ratio of strontium90 remaining, p , as a function of years, t , since the nuclear accident.

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A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1If p0 was the initial quantity, then quantity after time t, p(t) = p0 (e^ kt) The ratio of strontium remaining,p= p(t)/p0 = (e^ kt) = (e^ 0.025t)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so it's just the last part? e^....

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1(e^ 0.025t) This is required function

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1No p(t) = p0 (e^ kt) But the given problem is asking the ratio of Sr90 remaining, So, p= p(t)/p0 is the solution

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1That is just a difference of naming convention. If you want to call the ratio as p(t), then you can name 'the remaining quantity of Sr90' as , let us say 'pr'. Then, P(t) = pr/p0 = (e^ 0.025t)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so its the e part i enter

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1yes the entire e part (exponential part)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Sorry, but i just entered e^....and it was wrong

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1There are different types of formula for the decay. y=a(1r)^t is also used. try p(t)=(0.975)^t

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0but it simply says p(t)= what? so I dont know what to enter.
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