Engineer Fire Protection System — Mechanical (소방설비기사 기계분야)

Practice session

A dedicated outdoor water reservoir for fire protection has an open surface at atmospheric pressure ($P_{atm} = 101.3\text{ kPa}$). The density of water is $\rho = 1,000\text{ kg/m}^3$ and gravitational acceleration is $g = 9.8\text{ m/s}^2$. What is the absolute hydrostatic pressure ($P_{abs}$) acting on the suction intake located at a depth of $15.0\text{ m}$ below the water surface?

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