A small hydroelectric power plant operates with 500 gal of water passing through the system each second. The water falls through a vertical distance of 150 ft from a reservoir to the turbines. Calculate the power output, and express it in the units of both hp and kW. The density of water is listed in Table 6.1.

Table 6.1

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Density, p Viscosity, u Fluid kg/m? slug/ft kg/(m - s) slug/(ft s) Air 1.20 2.33 x 10-3 1.8 x 10-5 3.8 x 10-7 Helium 0.182 3.53 x 10-4 1.9 x 10-5 4.1 x 10-7 Freshwater 1000 1.94 1.0 x 10-3 2.1 x 10-5 Seawater 1026 1.99 1.2 x 10-3 2.5 x 10-5 Gasoline 680 1.32 2.9 x 10-4 6.1 x 10-6 SAE 30 oil 917 1.78 0.26 5.4 x 10-3