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In older works power is sometimes called activity.
Physics power equations. Since work is force times displacement WFd and velocity is displacement over time vdt power equals force times velocity. Appropriate for secondary school students and higher. The SI unit for power is the watt W which equals 1 joule of work per second Js.
Where theta is the. Power frac work donetime taken. The Power Formula is used to compute the Power Resistance Voltage or current in an electrical circuit.
So the more powerful a device is the more energy it will transfer each second. In this article we will learn all about the concept of work power and energy. 7457 watts 1 horsepower Or 1 hp 746 watt.
For historical reasons the horsepower is occasionally used to describe the power delivered by a machine. When it comes to work in physics youre sure to see problems involving power which is the amount of work being done in a certain amount of time. Electrical power was defined as the rate at which electrical energy is supplied to a circuit or consumed by a load.
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. In Lesson 2 the concept of electrical power was introduced. The equation used to calculate the power is.
Power equals work J divided by time s. An elastic force is a force that results from stretching or. Work energy and power are the most used terms in Physics.
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