Some years ago a unique proposal was made to raise the titanic. the plan involved placing pontoons within the ship using a surface-controll ed submarine-type vessel. the pontoons would contain cathodes and would be filled with hydrogen gas formed by the electrolysis of water. it has been estimated that it would require about 7×108mol of h2 to provide the buoyancy to lift the ship. what is the minimum electrical energy required to raise the titanic by electrolysis?

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.

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