N surfactant molecules occupy an interface with A binding sites. The molecule has energy= -ε when perpendicular to the interface, and -δ when parallel to the interface (ε>δ>0). M is the number of surfactants perpendicular to the interface.
For a given value of M, determine the energy E(M) and the number of configurations [itex]\Gamma[/itex](M)
None that I know of...
The Attempt at a Solution
I don't even know where to begin. Any advice or direction much appreciated.