It doesn't possess mass in its everyday meaning, but it possess some energy which can be expressed in terms of mass using the Einstein relations.
A vacuum by definition is an area in space devoid of matter.
Density = (mass) divided by (volume)Since the mass of any region of vacuum is zero, the density of vacuum is zero.So the density of any material is greater than the density of vacuum.
A vacuum does not contain anything; it is a space that is devoid of matter, including air. It is a low-pressure environment where there is very little or no molecules present.
The effective mass of an electron in a material is different from its mass in vacuum because in a material, the electron interacts with the surrounding atoms and lattice structure, causing its motion to be influenced by these interactions. This results in an effective mass that can be greater or lesser than the electron's mass in vacuum.
vacuum
Almost all of the volume of an atom has no mass.
A vacuum. However, a complete vacuum is impossible due to quantum effects.
It's mass remains the same. It is weight that changes. Important difference. If it is a true vacuum, it will be weightless.
Yes. Gravity attracts every speck of mass in the universe to every other one, even though in almost all cases, there's nothing but vacuum between them.
Vacuum does not have a specific heat because it does not contain any particles to absorb or transfer heat energy.
Yes, a vacuum is still a vacuum if electromagnetic waves are present. A vacuum is an area with no matter in it. We know that matter is anything which has mass and takes up space. Electromagnetic waves have no mass, and certianly take up no space. They're energy.
No. Heat is a measure of molecular energy in matter, a true vacuum would not contain matter. However, since there is no such thing as a complete vacuum, then Yes.