Chemistry, 28.01.2020 00:31 nikkibby13
In a certain city, electricity costs $0.17 per kw·h. what is the annual cost for electricity to power a lamp-post for 5.50 hours per day with?
(a) a 100.-watt incandescent light bulb
(b) an energy efficient 25-watt fluorescent bulb that produces the same amount of light? assume 1 year = 365 days.
(c) a typical incandescent bulb costs $0.89 and lasts for about a year; a typical energy efficient fluorescent bulb costs about $3.49 and lasts for about 3 years. is the additional cost of the fluorescent bulb justified?
Answers: 1
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Based on its chemical properties, identify the position of each chemical family on the periodic table.
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What is the main reason why some developing countries fear the increase the free trade policies around the world?
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In a certain city, electricity costs $0.17 per kw·h. what is the annual cost for electricity to powe...
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