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Power in mechanical systems is the combination of forces and movement. In particular, power is the product of a force on an object and the object's velocity, or the product of a torque on a shaft and the shaft's angular velocity. Mechanical power is also described as the time derivative of work.
العربية; Azərbaycanca; تۆرکجه; 閩南語 / Bân-lâm-gú; Беларуская (тарашкевіца) Bosanski; Чӑвашла; Cymraeg; الدارجة
Electric power is the rate of transfer of electrical energy within a circuit.Its SI unit is the watt, the general unit of power, defined as one joule per second.Standard prefixes apply to watts as with other SI units: thousands, millions and billions of watts are called kilowatts, megawatts and gigawatts respectively.
Power (physics), meaning "rate of doing work" Engine power, the power put out by an engine; Electric power, a type of energy; Power (social and political), the ...
Physics is the scientific study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. [1] Physics is one of the most fundamental scientific disciplines. [2] [3] [4] A scientist who specializes in the field of physics is called a physicist.
phys: power lost in the form of synchrotron radiation by a proton revolving in the Large Hadron Collider at 7000 GeV [6] 2.9 × 10 −11: −72 dBm astro: power per square meter received from Proxima Centauri, the closest star known 10 −10: 1 × 10 −10: −68 dBm astro: estimated total Hawking radiation power of all black holes in the ...
Electric power, like mechanical power, is the rate of doing work, measured in watts, and represented by the letter P. The term wattage is used colloquially to mean "electric power in watts." The electric power in watts produced by an electric current I consisting of a charge of Q coulombs every t seconds passing through an electric potential ...
In physics and many other areas of science and engineering the intensity or flux of radiant energy is the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy. [a] In the SI system, it has units watts per square metre (W/m 2), or kg⋅s −3 in base units.