It depends on the sound the vowel makes. There is a "yuh" sound at the beginning, if it were pronounced "oooniform" then it would be "an uniform"
Well, depenging on your uniform is depending on where you can get yours. Most stores will have them.
The speed of the object in motion, the radius of the curve in which it moves, the force acting on it to keep it moving in a circle, its angular velocity, and its centripetal acceleration, are all...
The ACU uniform adopted in 2005 is. The current Multi Cam uniforms being issued to units deploying to Afghanistan are not.
Because it's worn uniformly by all personnel in the Army.