A nucleus undergoes beta-decay, emitting an electron with kinetic energy 0.5MeV. The nucleus has an atomic mass A=100, and the nuclear radius is R~5.1 fm
Use the relativistic energy-momentum equation to estimate the momentum.
In the attachment I have the correct solution to the question above in green and below this my attempt in red.
Then I have three questions below this in blue.
My questions are:
1. The numbers I have inserted in red do not give the required 0.87 MeV. What have I done wrong? 2. What does T represent in the correct solution? 3. Does m_0 represent the rest mass of and electron?