The best multi-junction solar cells have an efficiency of about 40% for converting light energy from the sun into electricity. Estimate the size of a photocell that would be required to supply all the annual energy used by the US. (The average energy density from sun striking the surface of the earth is ~ 1.0 kW/m2 and assume that the cell is illuminated for 8 hours per day) The US consumes 100 quadrillion btu of energy.
The best multi-junction solar cells have an efficiency of about 40% for converting light energy from the sun into electricity. Estimate the size of a photocell that would be required to supply all the annual energy used by the US. (The average energy density from sun striking the surface of the earth is ~ 1.0 kW/m2 and assume that the cell is illuminated for 8 hours per day) The US consumes 100 quadrillion btu of energy.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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The best multi-junction solar cells have an efficiency of about 40% for converting
light energy from the sun into electricity. Estimate the size of a photocell that
would be required to supply all the annual energy used by the US. (The average
energy density from sun striking the surface of the earth is ~ 1.0 kW/m2 and
assume that the cell is illuminated for 8 hours per day) The US consumes 100 quadrillion btu of energy.
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