a bicycle pump uses pascals law to operate. the air in the hose acts as the a fluid and transfers force and pressure from the piston to the tire. if a pump has a piston with an area of 7.1 cm^2 how much force must be exerted on it to create a pressure of 8.2 X 10^5 Pa

This did i unseated, sorry

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.