The average intensity of the solar radiation that strikes normally on a surface just outside Earth’s atmosphere is 1.4 kW/m2. (a) What radiation pressure pr is exerted on this surface, assuming complete absorption? (b) For comparison, find the ratio of pr to Earth’s sea-level atmospheric pressure, which is 1.0 * 10^5 Pa.

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter24: Electromagnetic Waves
Section: Chapter Questions
Problem 6CQ
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The average intensity of the solar radiation that strikes normally
on a surface just outside Earth’s atmosphere is 1.4 kW/m2.
(a) What radiation pressure pr is exerted on this surface, assuming
complete absorption? (b) For comparison, find the ratio of pr to
Earth’s sea-level atmospheric pressure, which is 1.0 * 10^5 Pa.

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