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Author Question: A pure sample of 226Ra contains 2.0 1014 atoms of the isotope. If the half-life of 226Ra = 1.6 103 ... (Read 200 times)

LaDunn

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on: Jul 28, 2018
A pure sample of 226Ra contains 2.0  1014 atoms of the isotope. If the half-life of 226Ra = 1.6  103 years, what is the decay rate of this sample? (1 Ci = 3.7  1010 decays/s)

Question 2

How much kinetic energy must a deuterium ion (charge 1.6  10-19 C) have to approach to within 10-14 m of another deuterium ion? (1 MeV = 1.6  10-13 J)


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emsimon14

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Reply #1 on: Jul 28, 2018
Answer to Question 1

7.4  10-8 Ci

Answer to Question 2

140 keV


LaDunn

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Reply #2 on: Jul 28, 2018
TY


emsimon14

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Reply #3 on: Jul 28, 2018
You're welcome


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