Compute each part of following question given below:
Question: The diameter of the nucleus is about 12fm. A simple model of the nucleus is that protons and neutrons are confined within a one-dimensional box of length 12fm.
Part A: What is the first energy level, in MeV, for a proton in such a box?
Part B: What is the second energy level, in MeV, for a proton in such a box?
Part C: What is the third energy level, in MeV, for a proton in such a box?
Please keep it short and simple and please no copy and paste. Thanks.