In a certain city, electricity costs $0.12 per kW · h. What is the annual cost for electricity to power a lamppost for 7.50 h per day with a 100. W incandescent light bulb versus an energy efficient 25 W fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days. 100. W bulb: $ Iyear 25 W bulb: $ /year 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?

In a certain city, electricity costs $0.12 per kW · h. What is the annual cost for electricity to power a lamppost for 7.50 h per day with a 100. W incandescent light bulb versus an energy efficient 25 W fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days. 100. W bulb: $ Iyear 25 W bulb: $ /year 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?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter33: Alternating Current Circuits

Section: Chapter Questions

Problem 33.6CQ: As shown in Figure CQ33.6, a person pulls a vacuum cleaner at speed v across a horizontal floor,...

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