ARTICLES

In physics, a derived unit is a unit expressed algebraically using 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...

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Density is a derived unit because it is calculated from mass and length, which are both base units. Density for an object or substance is defined as mass divided by volume, where volume is defined as length cubed.

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A derived quantity is a quantity that is based on the result of a systematic equation that includes any of the seven basic quantities, which are the kilogram, meter, second, ampere, kelvin, mole and candela. Examples of ...

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SIMILAR ARTICLES

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.

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Some basic physics questions can be "what are electrical conductors," "describe refraction," "give the numerical value for the speed of light," "give the definition of momentum" and "specify the units used for work." The...

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One of the most common definitions for efficiency in physics is a measurement of how much of the desired work or product is obtained from each unit of energy invested into that task or product. An additional definition o...

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Energy, the ability of a system to do work, has a variety of measurement units, but the most basic unit of energy is the joule. Named after James Joule, the joule was developed to explain the relationship between heat an...

www.reference.com/article/units-used-express-energy-27cdb92d945cbf86