Physics Archives

Trini asked:


An 14 W energy-efficient fluorescent lamp is designed to produce the same illumination as a conventional 35 W lamp. How much does the energy-efficient lamp save during 95 hours of use? Assume a cost of $0.080/kWh for electrical energy.

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Mira A asked:


I just have a few questions and if you could answer them than that would be great!

Why does the refrigerator use a lot of electrical energy?
What are some reasons why household circuits are wired in parallel?
Why can wiring circuits in parallel be dangerous?
What are four specific ways you could save electrical energy in the home?

Thanks a lot in advance!

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vhersz asked:


applying the law of conservation, why are we ask to save energy and use it wisely?

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