a small helium balloon :) i think.... i dont actually know the answer i just know that a small helium balloon will be very buoyant :)
A balloon filled with hydrogen gas floats in air because hydrogen is lighter than air. The buoyant force acting on the balloon is greater than the gravitational force pulling it down, allowing it to float.
Balloons filled with air are denser than the surrounding air, causing them to sink. The weight of the balloon and the air inside it is greater than the buoyant force acting on them, resulting in the balloon sinking.
Under water they are as buoyant as each other but on land the balloon will float away and the Styrofoam will stay.
A zepplin is a form of air transport which has a huge 'balloon' filled with helium which floats in the air. it was not commonly used in ww2 however but was used for reconnaissance in ww1
helium is lighter that air so rises above the air. similar to oil rising above water.
A balloon flies high because it is filled with a gas that is lighter than the air outside the balloon. This creates a buoyant force that causes the balloon to rise.
Elephant. :)
because helium has less density
A balloon filled with air will float on water because it is less dense than water. The buoyant force acting on the balloon allows it to float.
Helium is less dense than air, so a balloon filled with helium is lighter than the same volume of air. This buoyancy force allows the helium-filled balloon to rise. On the other hand, a balloon filled with air has the same density as the surrounding air, so there is no buoyant force to make it rise.
A balloon filled with helium rises until it reaches a point in the atmosphere where the density of the surrounding air equals the density of the helium inside the balloon. At this point, called buoyant equilibrium, the balloon stops rising because the forces of gravity pulling it down are balanced by the buoyant force pushing it up.
Because the pressure weighing down on the the balloon is greater than the pressure protruding from the balloon, the dominant force will cause the balloon to pop. This strictly depends on the amount in weight the water has on it, since the balloon can rise and become buoyant if not descended sufficiently.