Can anyone me out with this question ? it has to be right so much

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Which changes of state do the labels represent? a: b: c:

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?