Discussion on mass energy equivalence... How to determine the mass deficit caused by a nuclear radiation reaction... The difference in mass will be seen as energy emitted by the reaction, based on Einstein's formula E=MC^2. Anything with mass also has energy. A problem was viewed which showed how to find the exact amount of energy released when 1 U-232 atom undergoes alpha emission with the formation of a thorium nuclei. Binding energy was also explained. Assignment was to solve 3 beta emission equations...