(a) After 20 years, 15% of the initial mass of the radium has decayed. (i) Find the half-life period of the radium. (i) If 50 grams of radium has decayed after 30 years, find the initial mass of the radium. (iii) Find the time taken for 12 grams of the radium decay.
(a) After 20 years, 15% of the initial mass of the radium has decayed. (i) Find the half-life period of the radium. (i) If 50 grams of radium has decayed after 30 years, find the initial mass of the radium. (iii) Find the time taken for 12 grams of the radium decay.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 9E
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