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Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.
Weighing Supermassive Black Holes. Which of these devices would be a better tool for measuring the masses of black holes at the centers of other galaxies: camera that takes extremely sharp pictures or a Spectrograph that produces precise measurement of emission - line wavelengths? Explain.
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