The sun transfers energy to the earth by radiation at a rate of approximately 1 kw per square meter of surface. if this energy could be collected and converted to electrical energy with 25% efficiency, how large an area would be required to collect 5 kw? 1.25 m2 5 m2 20 m2 25 m2
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The sun transfers energy to the earth by radiation at a rate of approximately 1 kw per square meter...
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