A 5-kg block is suspended by a rope from the ceiling of an elevator that accelerates downward at 3.0 m/s 2. The tension force of the rope on the block is: A. 64 N, down
B. 15 N, up
C. 34 N, up
D. 34 N, down
E. 64 N, up

Ithink the answer would be a

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.