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Posted on 2014-11-19 05:35:00 in Physics by MAYA

Estimate electrical power usage in homes for lighting per year. Use the following assumptions: an average household has about ten (10) 100-watt lightbulbs that are on for about 5 hours a day. Other useful facts/assumptions: population of U.S. is about 300 million; an average household has about 3 people in it. Express the answer in kilowatt-hours (kWh), a typical unit of energy used in measuring residential power usage.

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