A 70 W outdoor security light burns, on average, 10 hours a day. A new bulb costs $ 30.00, and the lifetime is about 1000 hours. If electricity costs $ 5.00 per kW·h, what is the yearly price of “security,” per light? (1 year = 365 days)
A 70 W outdoor security light burns, on average, 10 hours a day. A new bulb costs $ 30.00, and the lifetime is about 1000 hours. If electricity costs $ 5.00 per kW·h, what is the yearly price of “security,” per light? (1 year = 365 days)
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter22: Electric Current
Section22.2: Using Electric Energy
Problem 31PP
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A 70 W outdoor security light burns, on average, 10 hours a day. A new bulb costs $ 30.00, and the lifetime is about 1000 hours. If electricity costs $ 5.00 per kW·h, what is the yearly price of “security,” per light? (1 year = 365 days)
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