c. A certain radioactive material is known to decay at a rate proportional to the amount present. If after one hour it is observed that 10 percent of the material has decayed, the half-life of the material is, O 100 hr O 1.3 hr O 200 hr O 5.9 hr O 6.6 hr

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 13CC
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c. A certain radioactive material is known to decay at a rate proportional to the
amount present. If after one hour it is observed that 10 percent of the material
has decayed, the half-life of the material is,
O 100 hr
O 1.3 hr
O 200 hr
O 5.9 hr
O 6.6 hr
*
Transcribed Image Text:c. A certain radioactive material is known to decay at a rate proportional to the amount present. If after one hour it is observed that 10 percent of the material has decayed, the half-life of the material is, O 100 hr O 1.3 hr O 200 hr O 5.9 hr O 6.6 hr *
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