Initially there was 80 milligrams of radioactive substance present. After an 8 hour period the mass had decreased by 4%. If the rate of decay is proportional to the amount of subastance present at time t, find the amount remaining after 21 hours.
Initially there was 80 milligrams of radioactive substance present. After an 8 hour period the mass had decreased by 4%. If the rate of decay is proportional to the amount of subastance present at time t, find the amount remaining after 21 hours.
Chapter5: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 28T: The half-life of radioactive actinium ( 227AC ) is 21.77 years. What percent of a present amount of...
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Initially there was 80 milligrams of radioactive substance present. After an 8 hour period the mass had decreased by 4%. If the rate of decay is proportional to the amount of subastance present at time t, find the amount remaining after 21 hours.
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