What makes the sky blue? a. reyleigh b. the sun c. the atmosphere d. the birds

Actually , Dispersion of ray of light from the sun make the sky seems to be Blue.

Examples: mental health problems cardiovascular disease obesity and other eating disordersmenstrual problems skin and hair problems

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.