A light bulb radiates 90 W uniformly in all directions. (a) Find the intensity at a distance

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A light bulb radiates 90 W uniformly in all directions.

(a) Find the intensity at a distance of 1.5 m.

(b) If the wavelength is 650 nm, find the number of photons per second that strike a surface of area 1 cm2 oriented so that the line to the bulb is perpendicular to the surface.

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Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

1st Edition

Authors: Edmund G. Seebauer, Robert L. Barry

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Question Posted: Jul 14, 2011 09:22 PM

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A light bulb radiates 90 W uniformly in all directions. (a) Find the intensity at a distance

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Fundamentals of Ethics for Scientists and Engineers

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