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MCQIntermediateSolar System & Planetary Science
USAAAO — 2024 First Round
Question 14
The surface of the Sun exhibits differential rotation, with different rotational periods at different latitudes. We can measure this rotation speed using Doppler spectroscopy or by tracking the motion of sunspots. If the rotation speed of the Sun’s surface at the equator is 2021 m/s, and at 60° South is 809 m/s, how long would it take for a sunspot at the equator to do a full extra lap around the Sun compared to a sunspot at 60° South?
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Source
USAAAO 2024 First Round, Question 14. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.