Power vs Energy: What's the Difference?

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Power and energy are distinct concepts in physics, with power defined as the rate at which work is performed or energy is transferred. Energy represents the total amount of work that can be done within a system, while power quantifies how quickly that work occurs. The relationship can be expressed mathematically as power equals the change in work over time (P = dW/dt). Understanding this distinction is crucial, as energy is a measure of capacity, whereas power indicates the speed of energy usage or transfer.
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What is the difference between "power" and "energy" if there is one?
Is power a state of energy where it is being used?
 
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Look them up in the dictionary!

Power is the rate at which work is done... ie how fast energy is transferred from one type to another.
 
Adrian Baker said:
Look them up in the dictionary!

Power is the rate at which work is done... ie how fast energy is transferred from one type to another.

Yes, power is the work done in unit time.
P=dW/dt
 
What is the difference between "power" and "energy" if there is one?

Not to be coy, but I find it hard to believe that you've posted over 300 times on this site without knowing the difference between power and energy. Energy is simply a quantity changed within a system when external work is done on it, and power is the rate at which this work is done on it.
 
I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
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