Depends on the law where YOU are- and you did not share where you are.
Iowa Law requires that an individual have a permit to carry handguns. This permit is necessary for both open and concealed carry.
Depends on how the law is written where you live.
Montana is a traditional open carry state, and it is legal to carry an unconcealed handgun as long as you are at least 14 years old. Firearms may be prohibited in schools, bars, and government buildings, Firearms are prohibited on property used by the Federal government.
Not unless you are law enforcement.
See this site: http://en.wikipedia.org/wiki/Open_carry
You can if you want an encounter with police, criminals, etc..
You can, but, you better have lawyer on speed dial (even if you are legal to do so)
No. In Florida, you must have the gun concealed. There is not an exception for Tennessee residents.
That's a difficult question to answer here because there are too many "ifs." For instance, you can carry a gun in Tennessee unconcealed, but only if you have a Tennessee handgun carry permit. A better source of information for this is handgunlaw.us
only unconcealed
As long as your not a felon
probably not