The density of an object has nothing to do with what, and the magnitude of the density of a substanc

If you have studied electricity, you should know that resistivity is itself a property of an object, and voltage, current, or conductor shape, etc., are only parameters that calculate it, but do not change with them; The only thing that affects it is its own material, the temperature.

Similarly, the ---mass, volume, and shape of the macrostructure of an object are --- only parameters for calculating density, but do not affect its size; Related to this is temperature, generally when the temperature increases, the density decreases, but there are exceptions, such as the phase change of water. From ice to water, the temperature rises and the density increases. The magnetic field and electric field are also irrelevant to the density of the object under normal circumstances; force (increase in density of gases at high pressure), solid particle size (it is now generally accepted that nanometers do not change the density of matter.

As for the density of the powder, it is necessary to analyze it specifically, because if the density is different, the results will naturally be different, that is to say, the density of the powder will be low, and the density will be lower) In some cases, the distance between molecules and atoms in the object is related, that is, it is related to the density.

In short, density is independent : mass, volume, macrostructure shape, magnetic field, electric field, ;

Density must (or sometimes) depend: temperature, force, solid particle size.

It is only related to mass and volume, and other physical properties such as temperature affect volume and thus density.

Nothing else seems to have an effect, such as magnetism, electricity, force, surface area, etc.

The density of the substance has nothing to do with the mass of the selected substance, and the size of the volume;

The density of an object is equal to the ratio of the mass to the volume of the object.

Mass, which is the so-called density; is the weight per unit volume.

Junior high school physics may test some of these questions. In short, if you encounter this kind of choice, it has nothing to do with the weight and volume of the object itself.

The density of a substance is related to factors such as the nature of the substance, temperature, and pressure.

1. No matter what substance it is, no matter what state it is in, with the change of temperature and pressure, the volume or density will also change accordingly.

2. The volume of the gas varies significantly with the pressure it is subjected to and the temperature it is in.

3. The density of solid or liquid substances only changes when the temperature is first stuffy and the pressure changes.

Factors that affect the density are the type of substance, temperature, and the shape of the substancestateDifferent types of substances generally have different densities; The object has the property of thermal expansion and cold contraction, and the temperature of the object of a certain mass increases, the volume increases, and the density decreases; The same state of matter is different, the density is different, e.g. water and ice, are the same substance, but the density is different.

Density is a measure of the mass within a specific volume, density is equal to the mass of an object divided by the volume, which can be expressed by the symbol, in the International System of Units and the Chinese legal unit of measurement, the unit of density is kilogram m.

Density is one of the properties of matter, each substance has a certain density, and the density of different substances is generally different. Therefore, we can use density to identify substances. The method is to determine the density of the substance to be measured, and compare the measured density with the density of various substances in the density table, so that you can identify what kind of substance the object is made of.

The specific gravity is the density, which is represented by a symbol and is equal to the mass of the object divided by the volume, which is calculated by the formula =m v. In the International System of Units and the Chinese legal unit of measurement, the unit of density is kg m.

For the same substance, its mass is proportional to its volume, and its ratio is a fixed value. Density is a property of the substance itself, regardless of mass, if a steel plate is cut into two pieces of different sizes, the density of the two steel plates after cutting remains unchanged.

Areal density, in terms of engineering materials, is the mass per unit area of a substance of specified thickness.

Bulk density (bulk density) indicates the volume of the material in the contained solids. In building materials, the ratio of the mass to volume of a material is called density. In different structural states, it can be divided into true density, apparent density and bulk density, and the apparent density can be divided into bulk density and apparent density according to its opening holes.

Density measurement formula: <>

The bulk density increases with the increase of the pressing pressure, and when the pressing pressure increases to more than 900 MPa, the bulk density begins to approach the true density of copper. However, it is difficult to reach this value in the bulk density of the composites studied in this paper, mainly because of the large amount of paraffin wax.

Because the density of paraffin wax is smaller, generally in g cm3, which affects the density of the entire composite. Due to the practical application of temperature-sensitive composites, they are affected by external temperature changes, resulting in volume respect and expansion.

The bulk density decreases after expansion, and in order to bring the temperature-sensitive material to its original bulk density, springs are generally installed in the application equipment to return it to its initial state.

Density is the amount of a unit of matter, and in physics, the mass of a certain substance per unit volume is called the density of such a substance.

1. Density is a characteristic of matter, which is only related to the type of substance, and has nothing to do with factors such as mass and volume.

2. The density of different substances is generally not the same, but the sensitivity density of the same substance is the same.

3. The density of gas is related to temperature and pressure.