The metric unit for density is kilogram per meter cubed, and the smaller unit is grams per centimeter cubed. Density is defined as the ratio of mass per unit volume of a substance.Know More
Density shows how compact atoms, molecules and ions are in a substance. The density of solids is highest when liquids have lower densities. Gases have the lowest density, as the atoms and molecules in a gas are not tightly bound together.
Density of a substance depends on temperature and pressure. At lower temperatures, molecular and atomic motion slows down, causing them to become more compact. This causes substances to have higher densities at lower temperatures. The only anomaly is water, which has its highest density at 4 degrees Celsius. So the density of water in the solid state is actually lower than in the liquid state. This is why ice floats on water.Learn more about Physics
In physics, aÂ derived unit is a unit expressedÂ algebraically usingÂ base units. In the metric system, the SI base units for length, mass, time and electric current are respectively meter, kilogram, second and amp. Some derived units from these base units are area, volume, density, acceleration and frequency.Â Â Â Full Answer >
The density of plywood is roughly 34.08 pounds per cubic foot. Because plywood is a flat material, it is generally measured in mass per area rather than mass per volume.Full Answer >
The symbol for density in physics is the lower case Greek letter rho, "?." Density can also be written according to its SI units as kg/m^3.Full Answer >
The three laws of robotics state that a robot cannot harm a human, must obey orders and must act to protect itself in situations that will not conflict with the first two laws. These laws were created by science-fiction author Isaac Asimov.Full Answer >