An airplane cabin is maintained at an absolute pressure of 80 ,kPa during flight

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

An airplane cabin is maintained at an absolute pressure of 80\,kPa during flight. A U-tube manometer filled with water is connected between the cabin and the outside air. The water level in the arm open to the outside air is 30\,cm higher than the level in the arm open to the cabin. Taking ρwater=1.0×103 kg ⁣/ ⁣m3\rho_{\text{water}}=1.0\times10^{3}\,\text{kg}\!/\!\text{m}^{3} and g=9.8 m ⁣/ ⁣s2g=9.8\,\text{m}\!/\!\text{s}^{2}, what is the absolute pressure of the outside air? (a) 74 kPa74\,\text{kPa} (b) 83 kPa83\,\text{kPa} (c) 77 kPa77\,\text{kPa} (d) 50 kPa50\,\text{kPa}

Related theory

Browse the problem library