The mass at time t of a radioactive substance is m(t) = m(0)ekt, where m(0) is the initial mass andk=-0.000139.1.0⁰The mean life M of an atom in this substance is M =-ktekt dt-

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Answered: The mass at time t of a radioactive…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Just need part c for both questions. The answers I have are incorrect.
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The mass at time t of a radioactive substance is m(t) = m(0)ekt, where m(0) is the initial mass and k=-0.000139. 1.0⁰ The mean life M of an atom in this substance is M =-k tekt dt -