New-hire full-time airline baggage handlers at large US airlines earn gross average salaries of around $21,000 annually, or $10 per hour. Many airline baggage handlers, though, start out as part-time hires, meaning they'll make about $10,400 annually to start.
Free Energy is a thermodynamic quantity given by the subtraction between the internal energy of a system and the product of its absolute temperature and entropy. In Chemistry terms, it is also known as the difference between the enthalpy and the multiplication of the absolute temperature and entropy of a system, Gibbs Free Energy.
Binding energy is the energy required to disassemble a whole system into separate parts. A bound system typically has a lower potential energy than the sum of its constituent parts; this is what keeps the system together. Often this means that energy is released upon the creation of a bound state. This definition corresponds to a positive binding energy.