Recall that a Rube Goldberg device is a series of events that performs a simple task. For this performance task you will design a poster depicting a Rube Goldberg device to show the transfer of energy from step to step.

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.

I'm pretty sure the answer is c 

The anwser is: wave a has a greater pitch and frequency.