There are three ways to express the unit of density. Namely grams per cubic centimeter, kilograms per cubic decimeter and tons per cubic meter.
For the same substance, these three representations have the same number. For example, the density of aluminum:
2.7 tons/m3 = 2.7× 1000 kg/1000 cubic decimeter.
= 2.7 kg/dm3.
= 2.7×1000g/1000 cubic centimeter
= 2.7 g/cm3.
In the operation step, we cut off 1000 and get another representation of the unit.
What does the density unit KG/CUM mean?
Cubic meters = cubic meters
Kg = kg
Even kilograms per cubic meter is also called kilograms per cubic meter.
What is the unit of density?
Density is the mass per unit volume. The international unit is kilograms per cubic meter (kg/m? ), in addition to the commonly used grams per square meter (g/cm? )。
For liquids or gases, kilograms per liter (kg/L) and grams per milliliter (g/mL) are also used. But generally, g/L is not used.
What is the density?
Density In physics, the mass per unit volume of a substance is called the density of the substance.
1, the ratio of the mass of a substance to its volume, that is, the mass of the substance in unit volume, is called the density of this substance. Sign ρ. The unit is kg/m3. Its mathematical expression is ρ = m/v.
In physics. . What are the units of density and mass? ?
In the international system of units, the unit of density is kg/m? (pronounced as kilograms per cubic meter), and the mass unit is kilograms (pronounced as kilograms)
What is the density unit of sponge?
The density unit of sponge is kilograms per cubic meter. For example, PU45 is 45kg/ m3, and PU30 is 30kg/m3.
Sponges are classified in different ways. Generally, the density range of sponge is 15-50kg/m3.
The density of the sponge can be calculated. The steps are as follows: (1) Measure the quality of the sponge. (2) Measure the volume of irregular sponge by grit method. (3) Calculate the density of sponge by mass/density formula.
What is the unit of volume * density = weight volume?
Basic concept of density
Density is a property of matter.
(1) Definition: The mass per unit volume of a substance is called density. Represented by the letter ρ.
(2) density calculation formula: ρ = m/v.
(3) Unit: the international unit is kg/m3, and the commonly used unit in experiments is g/cm3, 1g/cm3= 103kg/m3.
The mass per unit volume is density.
For the same substance, the ratio of mass to volume is constant and the density is constant.
The density of the same substance has nothing to do with its mass and volume.
The quality of iron. Regardless of the size, the density remains the same.
Different substances with the same volume have large mass and high density.
Compared with the same volume of water, the mass of iron is greater, indicating its high density.
Different substances with the same mass, small volume and high density.
Compared with the same volume of aluminum, the mass of copper is greater, indicating its high density.