3students push the teacher’s desk down the hallway. While they pushed 2 other students tried to stop them and pushed the desk back the other way. The force of the 1st 3 students way 40N and the force of the 2 other students was 45N. Calculate the Net force.

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.