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On a perfect fall day you are hovering at low altitude in a hot-air balloon accelerated neither upward nor downward The total weight of the balloon is 17500?
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∙ 11y ago
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∙ 11y ago
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Why will a hot air balloon rise and then float at a certain height in air?
increasing altitude decreases air pressure, this pressure gradient with gravity decides if things sink or float. heating the air in the balloon decreases the weight of the balloon and allows the downward pressure from above plus the weight of the balloon to be less than the upward air pressure from below. hence the balloon rises due to this force imbalance. the balloon reaches a constant height when all three are equal
What happens to the balloon as you pull the rubber sheet downward?
rubber band,cork;
Why does a partially inflated balloon expand as it rises?
The pressure in the balloon stays the same, but the pressure outside drops as the altitude increases. And as the outside pressure drops, the balloon expands.
Does the pressure inside the bag of balloon increases or decreases?
As the bag of balloon rises, the pressure inside the bag of balloon decreases. Air pressure generally decreases as the altitude increases.
Why does a balloon float?
The gas helium is less dense than the nitrogen-oxygen mix of atmospheric air. So a balloon filled to the same pressure (or even higher) will have a lower density than the air around it, which will displace it (flow under it), forcing it upward. The balloon will rise until the combined weight of the helium and the balloon are the same average weight (density) as the surrounding air. Long before it reaches that altitude, a normal balloon will begin to expand and will usually pop (at an altitude of a few hundred to a few thousand feet).Helium molecules are lighter than most air molecules in the atmosphere (mostly nitrogen and oxygen) therefore they are prone to rise while heavier molecules move downward.
What might cause a balloon blown up at low altitude to burst if it is taken to a higher altitude?
at altitude the balloon's external air pressure has been greatly reduced, often expanding the balloon to the bursting point.
Is motion of a balloon ascending at a rate of 14 meter per second is accelerated or decelerated?
since the balloon is moving up with a constant speed it is not accelerated or decelerated
What measures cloud altitude and direction?
a weather balloon
Why will a hot air balloon rise and then float at a certain height in air?
increasing altitude decreases air pressure, this pressure gradient with gravity decides if things sink or float. heating the air in the balloon decreases the weight of the balloon and allows the downward pressure from above plus the weight of the balloon to be less than the upward air pressure from below. hence the balloon rises due to this force imbalance. the balloon reaches a constant height when all three are equal
How does the altitude effect the size of a balloon?
As the external pressure drops with increasing altitude, balloons generally expand with height.
What happens to the hot air balloon when it reaches an altitude of 10000 meters?
the air pressure outside of the balloon decreases.
Would there be more air pressure in a balloon at sea level or high in the sky?
provided the balloon has not reached its elastic limit (it has burst!), the air pressure inside and outside will essentially be equal. [The pressure inside will be slightly less, which is where the lift comes from.] But even at altitude, the pressure will be approximately equal in and out, for at altitude, the balloon will have swelled, thus reducing the internal pressure. It will eventually reach an altitude at which the internal pressure and the external pressure will be equal, and the balloon will have reached maximum expansion. Filled at sea level, a balloon will seem empty and floppy, and very tall and thin. At altitude the balloon will fill out as the external pressure reduces.
What would happen if a balloon that was blown up at a low altitude is brought to a high altitude?
The ballon will most likely pop. The balloon will shrink.
What happens to the balloon as you pull the rubber sheet downward?
rubber band,cork;
What is the craft that uses heat to gain altitude?
A Hot Air balloon.
A student throws a water balloon vertically downward from the top of a building The balloon leaves the throwers hand with a speed of 6.00 ms Air resistance may be ignored so the water balloon is?
balloon
How does the sun make a balloon shrink?
it isn't the sun that causes the balloon to shrink. its the pressure. the higher the altitude, the higher the pressure.
