1. The problem statement, all variables and given/known data Consider the box potential V (x) = 0 0 < x < a 1 elsewhere a) Estimate the energies of the ground state as well as those of the First and second excited states for i) an electron enclosed in a box of size a = 10E-10 m. Express your answer in electron volts. ii) a 1 g metallic sphere which is moving in box of size a = 10 cm. Express your answer in joules. b) Discuss the importance of quantum effects for both these two systems. 2. Relevant equations E1 = ((h)^2 ) / ( 8 * m * L ^2) En = n^2 * E1 3. The attempt at a solution The First problem is , I am not sure about L(Length) . Is this equal to the size of the box 'a' in part i and ii. The Second Problem is how can i define the importantance of quantum effect (b) .. I mean should i have to define with the varying size what change i am observing in Energy Levels .