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Card 6

Front

geothermal energy is...

Back

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Card 7

Front

wind energy is...

Back

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Card 8

Front

hydroelectric power is...

Back

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Card 9

Front

payback time=

Back

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Card 10

Front

energy transferred=

Back

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Card 11

Front

cost=

Back

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Card 12

Front

power=

Back

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Card 13

Front

energy efficiency=

Back

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Card 14

Front

useful and total energy is measured in...

Back

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Card 15

Front

what reduces the efficiency of a machine?

Back

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