A B = Q2: The Lennard-Jones interaction is given by U(r) = Equivalently, one can also ; parametrize the same interaction using & o, as U(r) = 4 48 [3)** - (939 (a) Express both e and o using A and B. (b) The equilibrium distance ro for Lennard-Jones interaction is determined by the condition dur) = 0. Find the expression of ro. dr (c) Find the value of U(ro). (d) Show that U(r) reaches its minimum at r = ro