The cabin pressure of a passenger jet cruising at high altitude (30,000 ft)is about 1 atm.and the pressure outside is about 0.3 atm.What is the outward force on a window measuring 1 foot by 1 foot.

Question

Quizplus · Accepted Answer

The outward force on the window can be calculated using the formula F = P x A, where F is the force, P is the pressure and A is the area of the window. Here, the pressure difference across the window is (1 - 0.3) atm = 0.7 atm. Converting this to pounds per square foot (psf) using the conversion factor 1 atm = 2116.22 psf, we get a pressure difference of 1472.34 psf. Multiplying this by the area of the window (1 ft x 1 ft = 1 sq. ft), we get the outward force on the window as 1472.34 lb. Rounded to one decimal place, the answer is 1481.8 lb, which is given by option D.

The Cabin Pressure of a Passenger Jet Cruising at High