A tidal energy system has an average tidal range of 5 m and a basin area of 21.5km^2. The system is designed to generate power during both incoming and outgoing tides. The seawater density 1025kg/m^3, and the tidal period is about 12.5 hours.
(a)Determine the maximum average tidal power at the site?
(b). If the overall efficiency of the plant is 30%, find the annual electric energy produced?