how far does balloons fly off helium?
372306
Depends on how much helium you put into it, and how big your baloon is, and how and where you release it, and... it may well heep going up and up and up to the top of our atmosphere if you put enough in.
1160660
Helium is an inert gas that is lighter than air and can be inhaled briefly without risk of death. \n\nSound is produced by vibration, the movement of air around our vocal chords. Because helium gas is lighter than the usual oxygen/nitrogen blend, it changes the resonant frequency of the human vocal tract, causing a faster vibration and a higher-pitched, cartoon-character sound.
881994
An balloon has positive buoyancy (floats) if the volume of air it displaces weighs more than the balloon. This is the same as saying the balloon is less dense than the air it is in.\n\nIn air, which is mostly nitrogen and only about twenty percent oxygen, a balloon will not float if its overall density is greater than air. That is, if the balloon and the gas it contains weighs more than the volume of air that it occupies the balloon will sink. So you can't fill the ball on with air and expect it to float because the balloon fabric is denser than air.\n\nHowever, there are three (and only three) gases whose densities are less than air: hydrogen, helium, and hot air. If the volume of the balloon is large enough, the weight of the hydrogen or helium or hot air when added to the weight of the fabric will be less than the weight of the air the balloon displaces. The balloon rises.\n\nAll of this is commonly referred to as manifestations of Archimedes' Principle.
43871
There is a popular toy called a rocket balloon.  It is about 40" long and when you release it, it shoots up in the air and then winds it's way down as it slowly deflates while making a loud airplane type noise.  I've included a link to a picture below.  I'm not sure if this is what you're looking for but it's what came to mind.
937535
The helium is compressed when it is in the tank.  When it exits the tank, it expands in the balloons until it equalizes with atmospheric pressure.  Any gas can be compressed, as to occupy a smaller volume.  You can see this if you would take a plastic container fill it with air, and submerge it to the bottom of a swimming pool.  you would able to see that the container would deform because of the volume change of the container.
176876
The gas in the balloon is helium. These helium atoms were once the alpha particles of radioactive decay trapped with other particles beneath the ground in natural gas deposits. For each uranium atom that decays to lead, 8 alpha particles are emitted. An alpha particle with 2 electrons is a helium atom.
822799
First three answers are not correct.  The answer, for normal hydrogen and helium, is four.  Two of the protons will convert to neutrons, with the emission of positrons and neutrinos.  The positrons will annihilate with two of the original hydrogen electrons, each throwing a pair of 511 kev gamma rays.  The remaining two electrons will tie up with the helium.  This is the reaction that powers the sun.
958394
You could tie a long string or ribbon on it and let it go.  At some point, the balloon will stop rising.  Cut the string just where it touches the floor.  Neutral bouyancy achieved!
726772
Its a trick Q...\n1. If floating on Surface, then 0 (since ur ballon is massless, although theoretically, nothing is massless..)\n2. If forced to stay inside water, then it would be equal to the weight of water displaced (i think ur Q is phrased wrongly, it is 1000cm3 displaced water ( or else the answer depends on the volume of the balloon).. Or simply, it is equal to the force used to keep the balloon inside water.
282829
This is similar to asking why gravity doesn't affect boats. It does, but buoyancy keeps them above water. Similarly, if you push a hollow rubber ball down to the bottom of a pail of water and simply release it, it will pop back up to the surface.\nThe helium balloon is just being pushed up by the relatively higher air pressure under it. See the sources for a detailed calculation and a diagram of the pressure situation.
417118
The experiment which you have suggested (although incompletely) is a classic method of verifying Bernoulli's equation, and it consists of hanging two balls in the air by strings, reasonably close to each other and blowing air through the gap between them. \n\nSound as the logic behind the experiment may be, it is in fact quite simple to perform the experiment incorrectly. One way in which this can be done is by blowing directly at the balls, which has the undesirable effect of pushing them in a haphazard direction. Hence, while blowing, keep in mind that you do not let your blows land on the surfaces of the balls. The air should strictly pass through the gap. \n \nThe other reason could be heavy balls. \n\nYou are best off using pingpong balls, with their surfaces spaced about 5-7 centimeters ( 2-3 inches) apart.
182931
Lift under a liquid (or BOUYANCY FORCE) is defined as the weight of the volume of liquid displaced.  In other words, say a ball displaces 1 cubic meter of water.  The ball will be pushed back up with the same amount of force as the weight of that 1 cubic meter of water.\n\nSince water's density is 999 kg/cubic meter, we're looking at 999 kg of water (water is really heavy!).\n\nNow if we want the force of that water, we'd simply multiply it by the gravitational acceleration, 9.8 m/s/s:\n\n999 * 9.8m/s/s = 9790 Newtons (1 Newton = 1 (kg * m)/(s^2))\n\nSo the ball would be pushed back up with a force of 9790 Newtons.\n\nNow, the hard shell ball will (theoretically) not deform when subjected to the pressure of 10 feet of water.  So the *bouyance force* placed on the hard shell ball is easy to calculate, given the formula above.\n\nThe latex balloon, however, will shrink as it is exposed to increasing pressure, so the volume of water it displaces will be smaller. (I will not solve that problem here as it takes up quite a bit of space to show how much a balloon shrinks as it is subjected to increasing pressure.  Essentially it comes down to writing a spherical force balance and integrating over volume)\n\nConsequently, the bouyancy force exerted on the latex balloon will be smaller, and the ping pong ball would be forced back up through the water harder (and faster) than the balloon.\n\nAs an extreme, ever wondered what happens to helium filled balloons when they are released into the air and they float up until you can't see them anymore?  Since the atmospheric pressure is lower and lower the higher you go, the balloon expands until eventually it pops.  At that point, the popped balloon either falls back to earth or gets swept up into atmospheric currents, which can take it basically anywhere on earth.
170260
Space is not a perfect vacuum devoid of particles, atoms, or molecules, it is a partial vacuum.  It is just that the density of matter in space is so small that it doesn't apply pressure against the balloon. If the balloon pops, the air inside the balloon is dispersed at the molecular and atomic level since air is comprised mostly of molecules: O2, CO2, CH4
310208
The balloon rises in atmosphere and remains intact till the point when its internal pressure is lower than the atmospheric pressure. At higher altitude where the atmospheric pressure is lower and the pressure inside the balloon is higher, it bursts as the rubber cannot withstand the internal pressure.
991569
Yes this is an important topic.\nthe amount is tiny really.\nwhy not try to blow up a balloon and never burst it then all th gas will be traped and not effect the environment\nx x x
550091
Depends on local airpressure and weight of the man.\nAt 1013 millibar (= 1 atm) the mass of 1m³ of air is 1.29 kg\nand the mass of 1 m³ of helium is 0.178 kg\n\nTo make a mass of 75 kg weightless you'll need 75/(1.29-0.178) = 67 m³ of helium, to lift it a little bit more.
946246
Helium particles are very small, in fact they are the smallest free particles that normally exist in nature. Although the plastic your balloon is made out of can stop water and sand and marbles and various other materials that have large particles, helium is small enough to go through, so it leaks.\n\nNow, there are certain kinds of balloons which are made out of special plastics and leak hardly any helium at all. However they are more expensive than the standard, cheap, leaky ones.