A particular solid can be modeled as a collection of atoms connected by springs (this is called the Einstein model of a solid). In each direction the atom can vibrate, the effective spring constant can be taken to be 9.5 N/m. The mass of one mole of this solid is 610 g. How much energy, in joules, is in one quantum of energy for this solid?
a. 0.145 J
b. 0.725 J
c. 1.45 J
d. 2.9 J