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What is the intensity in W/m2 of a 80 -W light bulb at a distance 10 cm from the bulb's center?
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Answered by
R_scott
the surface area of the sphere is ... 4 π r^2
r = 10 cm = .1 m
intensity = 80 W / (4 * π * .01 m^2)
r = 10 cm = .1 m
intensity = 80 W / (4 * π * .01 m^2)
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