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  1. Power (physics) - Wikipedia

    • Power is the rate with respect to time at which work is done; it is the time derivative of work: $${\displaystyle P={\frac {dW}{dt}},}$$ where P is power, W is work, and t is time. We will now show that the mechanical power generated by a force F on a body moving at the velocity v can be expressed as the product: $${\displaystyle P={\frac {dW}{dt}}=\mathbf {F} \cdot \… 展开

    Overview

    Power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit o… 展开

    Units

    The dimension of power is energy divided by time. In the International System of Units (SI), the unit of power is the watt (W), which is equal to one joule per second. Other common and traditional measures are horsepower (hp), … 展开

    Average power and instantaneous power

    As a simple example, burning one kilogram of coal releases more energy than detonating a kilogram of TNT, but because the TNT reaction releases energy more quickly, it delivers more power than the coal. If ΔW is th… 展开