Physics, 19.01.2021 06:20 dprajapati832000
A fan that is switched on for 1 minute uses 500 W usefully but also wastes 300 W through the emission of sound and heat. What's the efficiency of the fan?
Answers: 2
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A fan that is switched on for 1 minute uses 500 W usefully but also wastes 300 W through the emissio...
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