Page 77 - Radiation Safety
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EXERCISE 5











                                 Given A = 100Ci, T½ = 75 days
                                                   o





                                 1. Draw a graph of activities in curies versus time in days



                                 2. What is the remaining activity after 300 days?










                                 Formula for source activity,    A = A .e                                          (-0.693 x t )/T½

                                                                                          t
                                                                                                         o
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