A certain radioactive material is known to decay at a rate proportional to the amount present. If initially there are100 milligrams of the material present and if after two years it is observed that 5 percent of the original mass has decayed, find (a) an expression for the mass at any time t (b) the time necessary for 10 percent of the original mass to have decayed.
A certain radioactive material is known to decay at a rate proportional to the amount present. If initially there are100 milligrams of the material present and if after two years it is observed that 5 percent of the original mass has decayed, find (a) an expression for the mass at any time t (b) the time necessary for 10 percent of the original mass to have decayed.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 15T
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A certain radioactive material is known to decay at a rate proportional to the amount
present. If initially there are100 milligrams of the material present and if after two years it
is observed that 5 percent of the original mass has decayed, find
(a) an expression for the mass at any time t
(b) the time necessary for 10 percent of the original mass to have decayed.
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