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andreyandreev [35.5K]
3 years ago
10

what is the percent efficiency of a light bulb that emits 14 joules of light for every 60 joules of electric energy thst enters

it?
Physics
1 answer:
jasenka [17]3 years ago
5 0
If you're using the bulb as a source of light, then it's. 14/60 = 23.3% efficient.
If you're using it to heat a bird nest or a hamster cage, then it's. 46/60 = 76.7% efficient !
It just depends on your point of view, and what you consider 'useful' output.
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Answer:

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Explanation:

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A wave with a wavelength of 125 meters is moving at a speed of 20 m/s. What is it’s frequency
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Answer:

0.16Hz

Explanation:

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8 0
3 years ago
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