C. If after 3700 years a sample is 15% of what it started with, what is...

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C. If after 3700 years a sample is 15% of what it started with, what is the half-life of this element (in years)? Problem 6. (Half-lives of Radioactive Elements) A. Polonium-214 has a half-life of 164 µs. In 1 ms, how many half-lives will have passed? B. If we start with 10,000 atoms of Polonium, how many will we have left at the end of 1 ms? C. If each Polonium-214 decay occurs by the emission of a 5 MeV alpha particle, what is the total energy released via all the alpha particles in 1 ms? Give your answer in MeV. (Hint: What you calculated in Part B is the number of atoms remaining, not the number of atoms that decayed.) C. If after 3700 years a sample is 15% of what it started with, what is the half-life of this element (in years)? Problem 6. (Half-lives of Radioactive Elements) A. Polonium-214 has a half-life of 164 µs. In 1 ms, how many half-lives will have passed? B. If we start with 10,000 atoms of Polonium, how many will we have left at the end of 1 ms? C. If each Polonium-214 decay occurs by the emission of a 5 MeV alpha particle, what is the total energy released via all the alpha particles in 1 ms? Give your answer in MeV. (Hint: What you calculated in Part B is the number of atoms remaining, not the number of atoms that decayed.)

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c Using law of radivaution IL t B N No A 164 s N No e 2 x 370o 189... View the full answer