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Learn the concepts of work, energy and power in physics with examples, formulas and units. Find out how they are related and how to calculate them using simple steps and diagrams.
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In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units , the unit of power is the watt , equal to one joule per second. Power is a scalar quantity.
Learn about the concepts of work, power, and the work–energy theorem in physics. This web page is part of a free textbook by OpenStax, a nonprofit organization that provides high-quality learning materials.
Power is the rate at which work is done. It is the work/time ratio. Mathematically, it is computed using the following equation. Power = Work / time or P = W / t . The standard metric unit of power is the Watt. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time.
Learn how to measure power in watts and horsepower, and how to calculate instantaneous, average and peak power. Explore how power relates to work, energy and motion with examples and exercises.
20 Feb 2022 · Power is the rate at which work is done, or in equation form, for the average power \(P\) for work \(W\) done over a time \(t\), \(P = W/t\). The SI unit for power is the watt (W), where \(1 \space W …
Learn how to calculate power, the rate at which work is done or energy is transferred, using the formula P = Fv. Watch a video and see how power depends on force, velocity and displacement, and how to distinguish between average and instantaneous power.
