Depends on how good the weed is.
a few minutes
it depends on what strain of MJ you are smoking and how much. Most have an initial high of 45 minutes to an hour, assuming you smoke one bowl or joint. The after effects and the down high, coming down from it, can last a couple of hours.
Gold last for a long time because it is durable. Gold jewelry will last for a long time when it is made purely of gold.
speed keeps you high for hours, cocaine doesn't last long. so in my point of view I'd have to say that speed is better.
Deuterium is a stable isotope of hydrogen and will likely last as long as the rest of the universe.
a few minutes
about a min, but lung disease last's forever.
Forever
3 weeks
Depends on how much contact you had with it!
48 hours
i have some cough syrup with codein from last year. is ok to take it
Technically no, but it would be exceptionally foolish and shortsighted to neglect getting a high school education with the expectation that you'll become a model and that your career will last long enough for you to support yourself for the rest of your life.
because the dont rev very high and the were built very good to last long
A junior high football game usually last around 48 minutes.
Ti last a year or two
That's not necessarily a question someone can answer but yourself. on how long you want your relationship to last, and if you get bored of him/her just depends on how well your relationship goes and how long you want it to last.