The sun emits electromagnetic waves with a power of . Determine the intensity of electromagnetic waves from the sun just outside the atmospheres of Venus, the earth, and Mars.
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If a 20 W light bulb emits spherical electromagnetic waves uniformly in all directions.
(a) Find the intensity at a distance of 5 m from the bulb.
(b) What is the radiation pressure at a distance of 5m from the bulb?
Which of the following concepts applies to both sound waves and electromagnetic waves : a) intensity or b) polarization? Account for your answer.
