An indicator light on a control panel operates continuously, drawing 20 mA from a 120-V supply. At
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An indicator light on a control panel operates continuously, drawing 20 mA from a 120-V supply. At $0.09 per kilowatt-hour, how much does it cost per year to operate the light?
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Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell
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