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Kilometre per square kilometre is an SI derived unit of reciprocal length used for measurement of density of a linear feature in an area. It is used to measure, for example, drainage density [ 1 ] or road density (i.e. kilometres of road per square kilometre of land).
Volume charge density (symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C⋅m −3), at any point in a volume. [1] [2] [3] Surface charge density (σ) is the quantity of charge per unit area, measured in coulombs per square meter (C⋅m −2), at any point on a ...
Taximeters manufactured by ABU in Sweden. Left to right: Swedish, German, English. Argentine Taxímeter "Digitax Printer" in "Libre" (Available) mode. The modern taximeter was invented by German Friedrich Wilhelm Gustav Bruhn in 1891, [3] and the Daimler Victoria—the world's first meter-equipped (and gasoline-powered) taxicab—was built by Gottlieb Daimler in 1897.
Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).
Taxi fares are set by the state and city where they are permitted to operate. The fare includes the 'drop', a set amount that is tallied for getting into the taxi plus the 'per kilometer' rate as has been set by the city. The taxi meters track time as well as distance in an average taxi fare.
In electromagnetism, current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. [1] The current density vector is defined as a vector whose magnitude is the electric current per cross-sectional area at a given point in space, its direction being that of the motion of the positive charges at this point.
A circle of radius r for the Chebyshev distance (L ∞ metric) on a plane is also a square with side length 2r parallel to the coordinate axes, so planar Chebyshev distance can be viewed as equivalent by rotation and scaling to planar taxicab distance. However, this equivalence between L 1 and L ∞ metrics does not generalize to higher dimensions.
The rates for a Yellow Cab in Pittsburgh as of September, 2011 are an initial charge of $3.35 plus $0.25 per 1/7 of a mile, plus $0.25 for each minute of waiting time. In trips over 20 miles, the meter will automatically begin calculating the distance following the initial 20 miles at $0.50 per 1/7 mile.