# General physics Exam

Jun 17th, 2015
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1. [20%] The total consumption of electrical energy in the United States is about 1.0 *1019 joules per year. (a) What is the average rate of electrical energy consumption? (b) The population of the United States is about 300 million people. What is the average rate of electrical energy consumption per person?

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General Physics I 2110-80Exam 2Name_____________________1. [20%] The total consumption of electrical energy in the United States is about 1.0 *1019 joules per year. (a) What is the average rate of electrical energy consumption? (b) The population of the United States is about 300 million people. What is the average rate of electrical energy consumption per person? (c) The sun transfers energy to the earth by radiation at a rate of approximately 1.0 kW per square meter of surface. If this energy could be collected and converted to electrical energy with 40% efficiency, how great an are

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