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A 50W fluorescent lamp turns one quarter the electrical energy it uses into light energy. How much light energy does it give out in 12s?
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A 50W fluorescent lamp turns one quarter the electrical energy it uses into light energy. How much light energy does it give out in 12s?

User Cameron Scott
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Answer: A watt unit is equal to 1 joule/sec.

Explanation: So you have a lightbulb with 50% efficiency, so it turns half the energy it consumes into light energy.

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User Volpato
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