No a train does not float in the air, no train does.
Any gas with a density lower than air will float on the air. Here is a list of such gases:AmmoniaMethaneHydrogenHeliumHotter air
they don't float ONLY with helium. They float with any gas that is less dense than air, for instance hydrogen.
There is a train, boat and air port in Memphis many other cities have air and train ports
When balloons float they have helium in it. Helium is not air, but a gas. It's lighter than air, which makes it float.
things float in air because of density
If it were, it would float in air. Does it float in air? There's your answer.
Float On Air 010a13d7
The float has air in it.
Only in water. The air from your mouth is the same density as the air in the room- they will not float in air.
No there is always a resistive force such as air resistance. The closest frictionless train is the japanese magnetic train which has no friction on the track.
Helium is lighter than air. So it will float in air.
Because it has air in it. Air weighs less than water therefore air floats.