The population of the city of Cambridge in the state of Massachusetts is around 100 000. Assume
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The population of the city of Cambridge in the state of Massachusetts is around 100 000. Assume that each resident of Cambridge uses energy at the rate of 1 GJ per day. If the average insolation in the area is 150 W/m2, compute the area of land needed to supply all the energy for the residents of Cambridge assuming that the conversion efficiency of sunlight is 2%, 4%, 8%, and 16%. Compare to the land area of Cambridge,which is 16.65 km2.
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