Sunday

October 26, 2014

October 26, 2014

Posted by **Alice** on Friday, October 10, 2008 at 1:35pm.

where A(t) is the amount after time t, A' is the initial amount at t=0 and r is the decay time.

Give an interpretation of the parameter r.

- Maths -
**drwls**, Friday, October 10, 2008 at 7:38pmr is the length of time required for the amount of A to decrease by a factor of 1/e

**Answer this Question**

**Related Questions**

Physics - A first order exponential decay can be written as A(t)= Ae^(-t/r) ...

calculus - Carbon-14 is a radioactive substance produced in the Earth's ...

Differential Equations - Model radioactive decay using the notation t = time (...

Math - D.E.Q. - The half-life of a radioactive isotope is the amount of time it ...

compound interest - How do I solve these problems? Complete the table for a ...

Calculus - The radioactive element polonium decays according to the law given ...

Math - The initial amount of sugar in fermenting a batch of beer is 5.5grams. ...

Math! - The initial amount of sugar in fermenting a batch of beer is 5.5 grams. ...

Math - The initial amount of sugar in fermenting a batch of beer is 5.5 grams. ...

Algebra - A defective nuclear reactor is leaking radioactive iodine-131. The ...