A man can row a boat in still water at a speed of 1 m/s. The man sets out to row the boat in a river from A to B. The water in the river flows at 0.5 m/s in direction B to A. Find the velocity of the boat throughout the water.

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The answer is 12, for the points

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.