working uid enters a with velocity 3o mls and leaves with velocity 140 mis- The A Stendy-flow &yste The mass flow rate i's q leg Is - of the flaid ave at entry, 13.8 bax,0.122 m² llkg - Internal enesgy 422 1glkg- and exit properties propertie 422 1g lkg are 1035 baro og05 m/ kg c internal energy 208 The heat transfes from the System is 4.22 19 KGa

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1. A new town is being developed in a rural area of Costa Rica. Planners are projecting a population of about 2,000 people and a baseload electric energy demand for the town of 10MWe over the first 20 years. A nearby river flows from the rainforest region with a mean annual flow of 100m³/s. Over a 20 km distance upstream of the town site, the river has a change in elevation of 1,000 m. Seasonal variations in the river flow could be as large as a factor of ten above or below the mean flow. Is a hydro project using turbines with 80% efficiency feasible to meet the town's future energy needs? Discuss (2-3 sentences each) at least two associated impacts that planners also need to consider in the hydro project design.