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marysya [2.9K]
1 year ago
13

The half-life of Radium-223 is 11.43 years. What is the annual decay rate? Express the result to four decimal places.

Mathematics
1 answer:
mestny [16]1 year ago
3 0

Answer:

Below

Step-by-step explanation:

e^(-kt) = 1/2     when t = 11.43

so  k = .060642797

e^ (- .060642797 * 1) = .9411  <====   is left after one year

             which means the decay in one year is

                  1 - .9411 = .05884 = 5.88% per year

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