(a)[2]
What does the term potential energy of a body mean?
(b(i)1)[3]
As the two nuclei move towards each other, calculate the total change in gravitational potential energy.
(b(i)2)[3]
For the two nuclei moving towards each other, calculate the total change in electric potential energy.
(b(ii))[2]
Use your results in (i) to demonstrate that the initial kinetic energy $E_K$ of each nucleus is $0.19\,\text{MeV}$.
(b(iii))[1]
The two nuclei may rebound from one another. Suggest one other outcome that could occur to the two nuclei if the initial kinetic energy of each nucleus is greater than that calculated in (ii).