A helium nucleus (charge +2q and mass 4m) and a lithium nucleus (charge +3q and mass 7m) are accelerated through the same electric potential difference, V0 . What is the ratio of their resultant kinetic energies, Klithium/KHelium?
(A) 2/3
(B) 6/7
(C) 1
(D) 7/6
(E) 3/2
