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Air expands when it is heated. This makes it less dense than colder air. Hence, it has buoyancy, and tends to rise. If it is trapped in a balloon, it can take the balloon up with it, along with things attached to the balloon, as long as the buoyancy of the balloon exceeds the attached weight.
Assuming you mean hot air balloon piloted license, it depends. There are three different stages of it, student, private, an commercial. Each take about a year to obtain
i dont know. Why dont you try making one and find out.
Because they didn't want to do the work all by them selves so they won a battle and got to keep the slaves.
On average they grow at 1 mm a year.
2 hours if it takes 20 puffs and you have to resurface to get breath for every blow into the ballon,and each dive and resurface takes 20 minutes then it would take 6 hours 40min to blow the balloon up
Imagine inhaling to blow in a balloon. You will take in air, hold it in your mouth and blow it into the balloon. Some of it will be the carbon dioxide you were exhaling but most of it will be the air you just breathed in. So, the gas inside the balloon will be a mixture, that is, air.
1. take a bottle and put vinegar in it 2. PUT BAKING SODA IN A BALLOON 3 PUT THE BALLOON ON THE BOTTLE 4 THEN YOUR DONE
at the part where you blow it up Take a piece of tape and place it over the outside of the balloon. Poke the needle through the tape and through the surface of the balloon. The balloon will not pop because the surface of the balloon cannot expand, thus popping the balloon.
it took about a year for the first hot air balloon to be made.
The easiest way to describe compressed air propulsion: Blow air into a ballon (compress the air) then release the balloon. The balloon will take off (propulsion) due to the compressed air within.
as much as u want as long as u don't blow urself up like a balloon when it starts to feel full and not gonna fit anymore then stop and that's pretty much it
80 days in hot balloon.
stop smoking that green staff.
I wish I knew
1 minute
When you inflate a balloon, even on land, you pinch the mouth of the balloon shut to stop air escaping once you have run out of air. You can do the same thing underwater. Take a breath, dive under, and blow into the balloon, and pinch it when you run out of air. You could also use a snorkel, but you will need to make sure you leave enough air in your lungs to blow water out of the snorkel.