A neutron breaks into a proton and electorn. Calculate the eenrgy produced in this reaction in `m_(e) = 9 xx 10^(-31) kg, m_(p) = 1.6725 xx 10^(-27) kg, m_(n) = 1.6747 xx 10^(-27) kg, c = 3xx10^(8)m//sec`.

Explanation

`._0^(1)nrarr_(1)^(1)p+ ._(-1)^(0)e`
Mass defect:
`Deltam = [1.6747 xx 10^(-27) - 1.3725 xx 10^(-27)-9xx10^(-31)]`
`= 1.3 xx 10^(-30) kg`
Energy produced `= Deltamc^(2) = 1.3 xx 10^(-30) xx (3xx10^(8))^(2)`
`= 11.7xx10^(-14) J = (11.7 xx 10^(-14))/(1.6xx10^(-13)) = 0.73 MeV`