5. (15 pts) In a hydroelectric power plant, 65 m/s of water flows from an elevation of 90 m to a turbine, where electric power is generated. The overall efficiency of the turbine- generator is 84 percent. Disregarding frictional losses in piping, estimate the electric power output of this plant. (p water = 1000 kg/m?) Choices: a. 68 MW b. 48 MW c. 26 MW d. 74 MW 65 m/s 90 m Generator Turbine "turbine-pen = 84%