Using a wheel and axle, a farmer is trying to lin a bucket of water from the bottom of a well. The larger wheel has a radius of 40 cm compared to the ade that has a radius of 10 cm. If a bucket of water is 50 N, then how much effort is
required to raise it?
200 N
12.5 N
2N
500 N

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.

Ithink it’s: light bounce if off a mirror

Ithink the answer would be a