The intensity of electromagnetic waves from the sun is1.4 kW/m2 just above the earth's
Chapter 15, Problem 31(choose chapter or problem)
The intensity of electromagnetic waves from the sun is1.4 kW/m2 just above the earth's atmosphere. Eighty percent of thisreaches the surface at noon on a clear summer day. Suppose youmodel your back as a 30 cm X 50 cm rectangle. How many joulesof solar energy fall on your back as you work on your tan for 1.0 h?
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