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Work And Energy — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWork And Energy2 Marks
Question
The power output of an engine is 3kW. How much work does the engine do in 20s?
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Answer

Power = 3kW
Time = 20s
$\text{Power}=\frac{\text{Work done}}{\text{Time}}$
Work done = Power × time
= 3 × 20kWs = 60kJ

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