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Anonymous users2024-02-06Density refers to the unit volume of a substance.
Under the mass, often Greek letters.
Or the letter d. Mathematically, density is defined as the quotient of mass divided by volume.
The density of the human body is only g cm, which is only a little more dense than water. Gasoline is less dense than water, so oil stains you see on the road will float on the water. Seawater is denser than water, so it is easier for the human body to float in seawater. (Dead Sea.)
The density of the sea reaches a density greater than that of the human body, so that people can float in the Dead Sea. ）<
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Anonymous users2024-02-05In physics, the mass of a substance per unit volume is called the density of that substance. symbol (pronounced rōu). The main SI unit is kilogram meter 3, and the common unit is gram centimeter 3.
Its mathematical expression is =m v. In the International System of Units, the principal unit of mass is the kilogram and the principal unit of volume is the cubic meter, so the mass of 1 cubic meter of matter is taken as the density of the substance. For inhomogeneous substances, this is called "average density".
Language out of the encyclopedia).
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Anonymous users2024-02-04Density is generally referred to as density, that is, how much it contains per unit volume.
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Anonymous users2024-02-03The mass of a substance per unit volume is called the density of the substance.
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Anonymous users2024-02-02SI units are generally 3 meters and kilograms.
For example, the density expression of water is.
The mass of water per 1 cubic meter is 10 3 kg.
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Anonymous users2024-02-01Density is mass divided by volume.
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Anonymous users2024-01-31Concept: The ratio of the mass of a substance to its volume, that is, the mass of a substance per unit volume, is called the density of the substance.
Formula: Density = Mass Volume. The density of the car is equal to the mass divided by the volume m v density and the deformation of the sail is m =
v v = m 2 kinds, which can be used to calculate the mass and volume of matter, each substance has a certain density, density is an important property of matter.
Small Expansion: The density of any point p in an object is defined as:
where v is the volume element containing the p-point in the underwriting hand;
m is the mass of the volume element. In the centimeter-gram-second system, the unit of density is gram centimeter3; In the International System of Units and the Chinese legal unit of measurement, the unit of density is kilogram m3.
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