Suppose the condenser in the 500 MWe coal power plant we analyzed in is cooled by a once through system, where water taken from the ocean is circulated once through the plant and then returned to the ocean. If regulations permit only a 10 ^◦C rise in the ocean water temperature, how much water (in m³/s) must be used? (Assume that the heat capacity of seawater is the same as that of pure water. Remember that the efficiency of the plant was estimated at 38%.)