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posted by Brianna on Wednesday, May 16, 2012 at 9:34am.
How much would it cost to watch a football game on the television with a power rating of 300 W for 3.0 h if electrical energy costs $0.10/kW·h? 0.108 wasent right
(300•10^-3)kW•3 h • $0.1 = 0.09$
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