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Physics 14 Online
OpenStudy (anonymous):

How much power is required to do 100 J of work on an object in 2 seconds? a. 200 W b. 100 W c. 50 W d. 0

OpenStudy (dape):

Power is just energy per unit time. So the power must be \[ P = \frac{W}{t} = \frac{100}{2} = 50 W \]

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