(a) Show that an observer at height H above the north pole of a sphere of radius...
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(b) Two spheres with radii and R are placed so that the distance between their centers is d, where d > r + R. Where should a light be placed on the line joining the centers of the spheres in order to illuminate the largest total surface?
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2mr H
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a Since the right triangles OAT and OTB are similar we have T H d dy dx S 2nx1 dxdy dy From x y r we ...View the full answer
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