The planet Neptune is 4.5 x 10 12 m from the earth. Its diameter is 4.9

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The planet Neptune is 4.5 x 1012 m from the earth. Its diameter is 4.9 × 107 m. What diameter telescope objective would be necessary to just barely see Neptune as a disk rather than as a point of light? Assume a wavelength of 550 nm.

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College Physics A Strategic Approach

ISBN: 9780321595492

2nd Edition

Authors: Randall D. Knight, Brian Jones, Stuart Field

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