which ballon would pop first you put on the grass, the one with air or the water?
469382
depends on the time of day. During a hot day the air balloon would pop first because air heats up juch faster than water. at night the air balloon would actually shrink because the air in the balloon would contract because of the cold air.
379193
it has nothing to do with the air in the atmosphere its the air that fills the balloon up. when its hot the ballon goes up as it cools it goes down
37506
either sound, waves or air.
144895
Wind. \n\nHow simple was that?
704450
Sportexe Momentum Turf\n\n@ first i thought it was grass that was really well kept but that was before a bunch of teams starting getting the new grass/turf hybrids.
450269
Well if the ball is hollow then it will float. If the weight of the water displaced is greater than the weight of the object then it will float because the object is lighter then the area of water it is taking up.
462904
Here's how it works:\n\nThe air and water serve two different functions - the air is what is compressed, and pushes the water out of the back end of the rocket.  The water, although basically incompressible, is what makes the rocket go.  Momentum is always conserved, so whatever momentum (mass times speed) the water gets going out the back is also imparted to the rocket in the opposite direction.  You can think of it as positive and negative added momentum, creating a net change of zero.  The rocket is usually a much lower mass than the water, so the speed it achieves in order to match the momentum is higher than that of the water.\n\nAfter the water and air are expelled from the rocket, gravity is the only remaining force; the rocket slows, reverses direction, and lands on the ground.
686605
Helium is lighter than air and cause the ball to float away.\n\nCarbon Dioxide is heavier than air so the ball would not bounce so well and it would be harder to kick.\n\nOxygen is lighter than air, but the difference is so small you wouldn't notice, no more that a ball being slightly over/under inflated.\n\nSince air is the cheapest, at a cost of nil, I suggest you put that in you balls.
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.
926714
waves form when you fart in the water
510674
Its all aerodynamics. Different angle of incidence of air flow on different curvatures give much more flight and movement to a golf ball. This adds more thrill to the play
618509
fill water balloons with different amounts of water and drop them at the same height to see if they fall differently.  =)
53097
well, ice is solid, water is liquid, and air is gas, and the potential energy increases as the stages change.  in other words, air is the warmest, water next, and ice last.  air being the warmest will warm up the ice faster and therefore melt it quicker.\n\nthe only reason that i can see why it'd be in water is if there's been a sudden change in temperature and the water is still warm but the air is cooler (cold front after a week of mid 60s or 70s weather).
819561
Perhaps surprisingly, the ballon will move forward (relative to the car). There are two ways to see this. One is the principle of equivalence: acceleration is like gravity, and in this artificial gravity field (directed backwards) there is a buoyancy force on the baloon (it's lighter than air). Or you could say a pressure gradient, directed forwards, has to build up inside the accelerated car (to accelerate the air), and this pressure will drive the ballon forward (the pressure is just enough to keep the air accelerating with the car, but the balloon is lighter than the air it displaces so it gains an extra acceleration).
810702
An idea would be, "Which gas could you fill a volleyball up with that would make it go better?" They you can have regular air, carbon dioxide, and helium. Then you make a hypothesis based on what you know, try one of them, and see if you were wrong.
417075
Air. It's made out of air and plastic.
909938
water and fire I think