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Title: 60% efficiency device uses chemical energy to generate 600J of electrical energy? Post by: illfavor on Feb 13, 2013 How much Chemical energy is used? A second device uses twice as much chemical energy to generate half as much electric energy, what is its efficiency?
Title: 60% efficiency device uses chemical energy to generate 600J of electrical energy? Post by: tony12 on Feb 13, 2013 Content hidden
Title: 60% efficiency device uses chemical energy to generate 600J of electrical energy? Post by: ilikecrackers on Feb 13, 2013 Ist answer = 600/0.6 = 1000 J
Second answer = 50% |