This problem is useful for the preliminary design of a hydroturbine. From the material learned in this chapter, it is fairly simple to estimate how much power a hydroturbine can generate, given only the flow rate of water and the elevation difference upstream and downstream of the dam. A dam has a gross head of \(15.5 \mathrm{~m}\) and a flow rate of \(0.22 \mathrm{~m}^{3} / \mathrm{s}\). Approximating the overall efficiency of the turbine/generator to be \(75 \%\), estimate the electrical power (in \(\mathrm{kW}\) ) that could be produced.