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2. Effective radiated power - Wikipedia

   en.wikipedia.org/wiki/Effective_radiated_power

   Effective radiated power ( ERP ), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity (signal strength ...

3. Vehicle weight - Wikipedia

   en.wikipedia.org/wiki/Vehicle_weight

   A standard car driving licence issued by an EU country (i.e. class B) limits the licence-holder to driving vehicles with a "maximum authorised mass" (i.e. GVWR) of 3,500 kg (7,700 lb). This includes holders of UK class B driving licences who passed their driving tests on or after 1 January 1997.

4. Work (physics) - Wikipedia

   en.wikipedia.org/wiki/Work_(physics)

   t. e. In physics, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, for a constant force aligned with the direction of motion, the work equals the product of the force strength and the distance traveled. A force is said to do positive work if it has a component in the ...

5. Great-circle distance - Wikipedia

   en.wikipedia.org/wiki/Great-circle_distance

   The great-circle distance, orthodromic distance, or spherical distance is the distance along a great circle . It is the shortest distance between two points on the surface of a sphere, measured along the surface of the sphere (as opposed to a straight line through the sphere's interior). The distance between two points in Euclidean space is the ...

6. Units of measurement in transportation - Wikipedia

   en.wikipedia.org/wiki/Units_of_measurement_in...

   Freight is measured in mass-distance. A simple unit of freight is the kilogram-kilometre (kgkm), the service of moving one kilogram of payload a distance of one kilometre. Payload quantity. kilogram (kg), the standard SI unit of mass. tonne (t), a non-SI but an accepted metric unit, defined as 1,000 kilograms.

7. Fuel efficiency - Wikipedia

   en.wikipedia.org/wiki/Fuel_efficiency

   v. t. e. Fuel efficiency (or fuel economy) is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical potential energy contained in a carrier ( fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is ...