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 model your back as a 35 cm x 55 cm rectangle. Part A How many joules of solar energy fall on your back as you work on your tan for 2.0 h? Express your answer in joules. ΞΑΣΦΑ E- Submit Previous Answers Request Answer X Incorrect; Try Again: 2 attempts remaining J

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 model your back as a 35 cm x 55 cm rectangle. Part A How many joules of solar energy fall on your back as you work on your tan for 2.0 h? Express your answer in joules. ΞΑΣΦΑ E- Submit Previous Answers Request Answer X Incorrect; Try Again: 2 attempts remaining J

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 70P: reaches the ground with an intensity of about 1.0kW/m2 . A sunbather has a body surface area of 0.8...

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