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Wind.
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Identify the weight of balloon with air. And identify the mass of the balloon. Now subtract the second from the first. You get the mass of the air present in it.
630 feet
hot air rising (less dense air), gravity. aero dynamics dont do much
This varies from country to country, but most public parks will allow takeoffs and landings, so long as there is room to do it safely without endangering the public. In built-up areas, height restrictions will generally be in place, so landing in some parks may not be possible. In rural areas such as farmland, the chase crew will endeavour to make contact with the landowner and seek permission to land. The other basic consideration is that there should be enough room to land and deflate the balloon safely.
Well there is this handle that eases the air flow, which releases helium, which when combined with oxygen turns into natural gas and ignites. So you can ease the handle and then no air can get through to the flame which makes the fire go out and helps the landing of the so called ''Hot air balloon''.
If there is warm air in the balloon, cooler air makes the balloon rise and if there is cold air in the balloon warmer air makes the balloon fall.
Air= air in balloon solid= balloon and basket
Below, the term "air molecules" refers to any molecules present in air; it is not meant to imply air is a homogeneous fluid.Assuming that both balloons are made of the same material, the water balloon will keep air in it the longest. This is for two main reasons:the balloon stretches more in a normally filled party balloon than in a normally filled water balloon. This implies that the internal pressure of the party balloon is greater, meaning more the air molecules inside the balloon will collide with the inside of the balloon more frequently than if the pressure was lower.the party balloon has a higher surface area to volume ratio. This means that air molecules are more likely to collide against the side of the balloon, compared to collisions other air molecules.Both of these factors would cause a party balloon to lose air faster than a water balloon.
D: The hot air inside the balloon becomes less dense than the air outside the balloon.
The air inside a hot air balloon is the same as normal air around the balloon and the air you're breathing, only heated by the flame inside the balloon, hence HOT AIR balloon.