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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound2 Marks
Question
What is the necessity of using term 'Average Power instead of power'$?$
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Answer

These two definitions are equivalent since one unit ofenergy must be used to do one unit of work. Often it is convenient to calculate the average power. In the straightforward cases where a constant force moves an object at constant velocity, the power is just $P = Fv.$

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