3. The intensity of radiation of a radioactive substance was measured at half-year intervals. The results were: t (years) 1.5 2 2.5 0.985 0.979 0.977 Y t (years) 3 3.5 4 4.5 5 5.5 Y 0.972 0.969 0.967 0.960 0.956 0.952 where y is the relative intensity of radiation. Knowing that radioactivity decays exponentially with time: y (t) ae-bt, estimate the radioactive half-life of the substance. 0.5 0 1.000 0.994 = 1 0.990

3. The intensity of radiation of a radioactive substance was measured at half-year intervals. The results were: t (years) 1.5 2 2.5 0.985 0.979 0.977 Y t (years) 3 3.5 4 4.5 5 5.5 Y 0.972 0.969 0.967 0.960 0.956 0.952 where y is the relative intensity of radiation. Knowing that radioactivity decays exponentially with time: y (t) ae-bt, estimate the radioactive half-life of the substance. 0.5 0 1.000 0.994 = 1 0.990

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter3: Assignment, Formatting, And Interactive Input

Section3.6: A Case Study: Acid Rain

Problem 7E

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