perfyme in a bottle has a density of 940kg/m^3 and its level =0.020m below the nozzle Calculate the minimum speed of air , so the liquid each the nozzle. the density of air is 1.29kg/m^3

No because a circle or pie graph usually shows percentages you'd need a line graph

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.

Gotta have a picture ^^