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# Nuclear Decay for Radioactive Sources

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Three radioactive sources each have activities of 1.0 micro Curies (Ci) at t=0. Their half lives are 1 sec, 1 hour and 1 day respectively

a.) how many radioactive nuclei are present at each source when t=0

b.)how many nuclei of each source decay between t=0 and t=1sec

c.)how many nuclei of each source decay between t=0 and t=1hour

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The equation that governs the radiactive decay is:
(1.1)
Where A is the activity (in units of disintegration per unit time), is the reaction rate and N is the number of active nuclei.
The solution to this separable differential equation is:
(1.2)
Where N0 is the initial number of active ...

#### Solution Summary

The expert examines nuclear decay for radioactive sources. How many radioactive nuclei are present are determined.

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