A 30 N force pushes a 20 kg box 5 m across the floor in 3 seconds. How much power was used?

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.

Cardiac muscle causes movement in the bone.

There are no answer choices, but a metaphor is a comparison between two objects that are not usually related without using like or as.

Definitely true