it all depends on what grade you are in , your age, and a whole lot more everyone is different just add up the min you spend in one week . Divide the sum of those numbers by how many numbers there are. Then multiply the newest answer which is the mean, by how ever many weeks you want and it'll be your average time on a computer for that amount of time. It's quite easy.
I say up to 4 to 5 hours once i lasted that long after that i got bored
It depends on the library but most should allow a laptop computer to be used as long as the person using it does not cause excessive noise or disturbance.
about half of their lifetime
well look at it long enough till your convinced to buy it, or till a sale's person comes and help's you.
about 1sec without oxygen... (Y)
id say 3 hrs but dont spend ur life in front of a screen no matter ur age.
It depends, Most teens are on the computer 1-2 hours a day, but a large portion of them are also on it for 6+ hours a day. Younger kids are not on the computer as much, but still some do spend a large portion of time on the computer.
It's not, as long as it's you or a trusted person accessing the other computer.
10 years
no longer than 15 to 20mins
2 min
It depends. Someone HAS TO BE using a computer at this moment. So daily