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A certain radioactive material B follows the law of exponential change and has a half-life of 100 hours. Find how long it takes for 80% of the radioactivity to be dissipated. a. t 222. 45 hours b. t 233. 45 hours C. t= 232. 45 hours d. et= 223.45 hours

A certain radioactive material B follows the law of exponential change and has a half-life of 100 hours. Find how long it takes for 80% of the radioactivity to be dissipated. a. t 222. 45 hours b. t 233. 45 hours C. t= 232. 45 hours d. et= 223.45 hours

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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A certain radioactive material B follows the law of exponential change and has a half-life of 100 hours. Find how long it takes for 80% of the radioactivity to be dissipated. a. t 222. 45 hours b. t 233. 45 hours C. t 232. 45 hours d. et 223.45 hours
Transcribed Image Text:A certain radioactive material B follows the law of exponential change and has a half-life of 100 hours. Find how long it takes for 80% of the radioactivity to be dissipated. a. t 222. 45 hours b. t 233. 45 hours C. t 232. 45 hours d. et 223.45 hours
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