Mechanical waves use matter to transfer energy. select the best answer from the choices provided t f

I believe the correct answer is true. Mechanical waves use matter to transfer energy. It  is a wave that is an oscillation of matter, and therefore transfers energy through a medium. Hope this answers the question. Have a nice day.

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.

Answerthe valence of an element or radical is equal to the number of positive or negative charges on the ion.