A point source emits sound waves isotropically. The intensity of the waves 4.50 m from the source is 1.51 ✕ 10−4 W/m2. Assuming that the energy of the waves is conserved, find the power of the source?

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.

Work is reduced while time is decreased

Ibelieve the answer is d. densityhope my answer has you : )

Inelastic is the answer your looking for.