[DOC] [TLE] Pressure, Barometers, & Barometric Pressure [PAR] The variation of atmospheric pressure with altitude is shown in a graph using 
data ... In fact, the increase in pressure is 14.7 psi for every 34 feet of additional 
depth. ... One cubic yard of air at sea level pressure and at a temperature of 70 F 
... Each square inch of bottom surface has to support the water above it. ..... First 
Flight [DOC] [TLE] It decreases? If the air pressure increased, wouldn't [PAR] The pressure at sea level is 1013 millibars and the pressure decreases by 14% 
for ... An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at a 
gauge .... Atmospheric pressure V decreases as altitude h increases. ... Assume 
that atmospheric pressure is 14.5psi so that the total pressure in the ball is 24.3
psi . [DOC] [TLE] The atmospheric pressure P in pounds per square inch (psi) [PAR] ... level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its 
altitude? ... The pressure on a scuba diver at sea level is 14.7 pounds per sq inch 
(psi). .... Atmospheric pressure V decreases as altitude h increases. ... Assume 
that atmospheric pressure is 14.5 psi so that the total pressure in the tire is 46.9 
psi . [DOC] [TLE] The air pressure P at sea level is about 14.7 pounds per square inch ... [PAR] SOLUTION: The air pressure P at sea level is about 14.7 pounds per square inch. 
As the altitude h(in feet above sea level) increases, the air pressure decreases... [DOC] [TLE] Cabin pressurization - Wikipedia [PAR] Before launch, the pressure was kept at slightly higher than sea level (a constant 
5.3 pounds per square inch (0.37 bar) above ambient for Gemini, and 2 pounds... [DOC] [TLE] Air Density - 2-Stroke-Porting.com [PAR] Atmospheric Pressure = 14.7 psi & 13 cubic feet of air = 1 pound. Power Loss 
due to Altitude. Air Density decreases at a rate of 2.9% - 3.0% for each 1000 ft. of 
elevation ... Atmospheric Pressure 14.5 psi (It's hard to ride at sea level 14.7 psi) 
... (read 1000cc 4-strokes) the turbo fan may have to spin faster than is efficient. [DOC] [TLE] THE EATHER CLASSROOM - jan.ucc.nau.edu [PAR] Atmosphere is the sea of air that allows animals and plants to live and is the ... As 
your altitude increases, the density of the air and, therefore, its weight decreases. 
At an altitude of 10,000 feet, air pressure is about 10 pounds per square inch, ... 
Humans have explored the atmosphere with kites, hot air balloons, airplanes,. [DOC] [TLE] Introduction to Aviation Physiology - Federal Aviation Administration [PAR] by increasing respiratory rate, chemical changes in the blood, and by increasing 
the ... for use at altitudes starting as low as 10,000 feet. ... What is the percentage 
of oxygen in the atmosphere at Sea Level ... One of the primary problems of flight 
related to physiology has to do with the fact ... Pounds per Square Inch (PSI). [DOC] [TLE] Aviation Weather | ECOS Pilot School [PAR] Figure 3: One square inch of atmosphere weighs approximately 14.7 pounds. ... 
This decrease in pressure (increase in density altitude) has a pronounced effect 
on ... An aircraft that requires a 1,000-foot ground run at sea level will require 
almost ..... The dry adiabatic lapse rate (unsaturated air) is 3C (5.4F) per 1,000 
feet. [DOC] [TLE] Pilot's Handbook of Aeronautical Knowledge Chapter 10 - American ... [PAR] The first layer, known as the troposphere, extends from sea level up to 20,000 
feet (8 ... and southern poles and up to 48,000 feet (14.5 km) over the equatorial 
regions. ... exerts pressure on the Earth at a force of 14.7 pounds per square inch. 
... This decrease in pressure (increase in density altitude) has a pronounced 
effect... [DOC] [TLE] Solution | Eskew Tade - Academia.edu [PAR] In other words, the weight of 1-kg mass at sea level is 1 kg-force. ... acceleration g 
and thus the weight of bodies decreases with increasing

Question: About 14.5 pounds per square inch at sea level, it decreases with altitude & has to be increased in airplanes
Answer: Air pressure