1. Intro to Physics Units
Introduction to Units
1. Intro to Physics Units Introduction to Units
85PRACTICE PROBLEM
The decay of rubidium 87 (Rb) is employed to estimate the age of a very old mineral sample containing 3.25 g of Rb. i) Calculate the number of radioactive disintegrations per second within this sample if Rb has a half-life of 4.92×1010 years. ii) Express the activity of this sample in Ci.
The decay of rubidium 87 (Rb) is employed to estimate the age of a very old mineral sample containing 3.25 g of Rb. i) Calculate the number of radioactive disintegrations per second within this sample if Rb has a half-life of 4.92×1010 years. ii) Express the activity of this sample in Ci.