new problem!! A pumped-storage reservoir sits 136 m above its generating station and holds 9.0×10^9 kg of water. The power plant generates 346 MW of electric power while draining the reservoir over an 6.9 h period. What fraction of the initial potential energy is lost to nonconservative forces (i.e., does not emerge as electricity)? could you please guys help me with that? I gave up with that I need that in hour guys please please.