According to einstein's special theory of relativity, the speed of light in a vacuum would be 3.0 108 m/s in which frames of reference? a. all frames of reference, regardless of acceleration b. frames of reference that are accelerating c. frames of reference that change velocity d. frames of reference that are not accelerating

According to Einstein's special theory of relativity, the speed of light in a vacuum would be 3.0 108 m/s in A.All frames of reference, regardless of acceleration. The laws of physics are the same in all inertial reference systems.

A. All frames of reference, regardless of acceleration (apex)

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.