Logarithms: Radioactive Decay
View the Lesson | MATHguide homepage Updated November 17th, 2016

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Formula: Radioactive Decay Formula
Given: There are 17 grams of Uranium-232.
Uranium-232 has a half-life of 68.9 years.
Find:  Use the formula above to calculate the time it would take for the given mass to degrade down to 0.17 grams. Calculate the solution for 't' to the nearest tenth using logarithms.
Solution:   t = years