The intensity of electromagnetic waves from the sun is 1.4 kW/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 32.0 cm x 49.0 cm rectangle. Part A How many joules of solar energy fall on your back as you work on your tan for 1.20 hr? Express your answer with the appropriate units. μᾶ Value Units ? Units input for part A

The intensity of electromagnetic waves from the sun is 1.4 kW/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 32.0 cm x 49.0 cm rectangle. Part A How many joules of solar energy fall on your back as you work on your tan for 1.20 hr? Express your answer with the appropriate units. μᾶ Value Units ? Units input for part A

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter17: Traveling Waves

Section: Chapter Questions

Problem 43PQ

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