This happens because the temperature at which oxygen changes from a gas to a liquid is about 13 degrees Celsius above that of nitrogen. The oxygen can be seen dripping from the can just as on a humid day you can see drops of water condense and drip from a can you take from the refrigerator.
Though you technically can join the military up to age 42, if you're 35 or over you'll need an age waiver if you've never been in the military before.
Â· just now. 1  The most common is 4 years but you can enlist for anywhere from 2-8 and even 10 now with and active/national guard enlistment. 2  3 years. 3  It is an 8 year committment. 4  Technically, 6 months to 2 years reckoning on the dept. 6 months for the army. 5  2-6 years. 6  3 years 18 months just enlisted last monday. 3 years. my hubby was in the army for 4 but got stop lossed so he got out about 9 months after his term ended. 8 years total. Your active service is based on the amount of years you have signed up for. The rest of the time will be spent in Inactive ready reserve.