You have two Cs-133 gamma ray sources. Source I was produced on Sept. 1, 2008 and source 2 was produced on Sept. 1, 2020. Both sources had an initial activity of 1.000 + 0.001/Ci. Note, a Curie, abreviated Ci, is a measure of radioactive decays corresponding to 3.7 x 10 0 radioactive decays per second. It is named after Marie Sklodowska Curie, the Polish-French scientist who discov- ered radium and polonium. Cs-133 has a half-life of about 30 years. In other words, each source emits gamma rays at a rate given by: 1-to R(t) = Ro2 $1/2 = Roe )71/2 (1) where Ro is the emission rate at time to, t is time and 1/2 is the half-life. You decide to see if you can measure the Cs-133 half-life by comparing the count rate of the gamma rays from the two sources with the same gamma ray detec- tor. Your detector works with an efficiency of n. Le. you have a probability n of capturing any given Cs-133 decay (Note: 0