What kind of matter fills a ballon ?

Air fills a balloon. If a hole is placed in a balloon, the air will rush out. If an object is in a gaseous state of matter, it will not have a definite shape or a definite volume. Plasma has all of the properties of a gas except that it is made up of electrons instead of atoms or molecules.

The height or the mass

Explanation:

The one variable that can change the potential energy of a box on the floor is either the height or the mass of the box.

Potential energy is the energy due to the position of a body.

Mathematically;

  Potential energy  = mass x acceleration due to gravity x height

Therefore, if the mass of the box is changed, the potential energy changes also.

If the position of the box is changed by raising it up, the potential energy changes