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MCQIntermediateOrbits, Gravitation & Dynamics
BAAO — 2019 Astronomy & Astrophysics Challenge
Question 8
The One-Mile Telescope is a radio telescope just outside Cambridge that has three dishes that can be spread out up to one mile (= 1.6 km) apart. Two of the dishes are fixed, whilst one can move along an 800-m set of former railway tracks. In order for the tracks to be perfectly flat, how much did they need to raise one end to compensate for the curvature of the Earth?
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Source
Source: British Astronomy and Astrophysics Olympiad (BAAO), Astronomy & Astrophysics Challenge 2019. Question text, answer-choice text, and answer were transcribed from the official BAAO paper and solutions PDFs; the explanation and metadata are original.