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60% efficiency device uses chemical energy to generate 600J of electrical energy?

illfavor

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11 years ago

60% efficiency device uses chemical energy to generate 600J of electrical energy?

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?

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tony12

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ilikecrackers

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11 years ago

Ist answer = 600/0.6 = 1000 J
Second answer = 50%

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