It really is impossible to list all the things - pyschological and otherwise - that could keep you out of the air force, or the navy. Anything that significantly reduces the kind of functionality necessary for the military is likely to render you ineligible.
air pollution
Military branch (Army, Navy, Air Force, Marine Corp) Psychological Services.
Most Definitely
FOREVER
There is a lot of people in the air force because they want to keep the people that are serving in are country and they want them to be safe and keep saving our solders
Someone can join the United States Air Force by first visiting an Air Force recruitment office. After talking to a recruiter, they must then go through specific training and pass certain skill tests, psychological test, and physical test in order to be accepted.
Resistance from air and friction.
Convection heat transfer could keep a paper in the air if the paper is placed above a source of warm air. As the warm air rises, it creates an upward force that can keep the paper suspended.
The buoyant force exerted on the toy balloon by the surrounding air is equal to the weight of the air displaced by the balloon. This force is calculated using Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the object. The buoyant force is counter to the force of gravity and will keep the balloon floating in the air.
No. Air force one is only for the current US President. However, after the inauguration of Obama, the air plane that usually acts as air force one does offer to transport Bush to whatever he's home destination is one last time.
United States Air Force - U.S.A Russian Air Force - Russia French Air Force - France Indian Air Force - India Royal Air Force - Britain Israelian Air Force - Israel Ukrainian Air Force - Ukraine Chinese Air Force - China Australian Air Force - Australia Korean Air Force - Korea
A balloon stays up because it is filled with a gas that is lighter than air, such as helium or hot air. This creates a lifting force that counteracts the force of gravity, allowing the balloon to float in the air.