Physics, 26.02.2020 19:34 blueflu5120
The intensity of electromagnetic waves from the sun is 1.4kW/m2 just above the earth's atmosphere. Eighty percent of this reaches the surface at noon on a clear summer day. Suppose you think of your back as a 30.0 cm × 51.0 cm rectangle. How many joules of solar energy fall on your back as you work on your tan for 1.30 hr ?
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The intensity of electromagnetic waves from the sun is 1.4kW/m2 just above the earth's atmosphere. E...
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