USAAAO 2022, I кръг — Задача 7
USAAAO 2022 - First Round · 5 февруари 2022 г.
Условие
Imagine the you observe transits of earth across the sun from a far away exoplanet. Assuming earth’s orbit has 0 eccentricity and it transits directly across the sun’s diameter (the impact parameter is 0), what is the duration of earth’s transit?
(a) 3.24 hrs
(b) 25.93 hrs
(c) 6.48 hrs
(d) 1.62 hrs
(e) 12.97 hrs
Отговори
- E
Решение
Assuming a circular orbit, the earth has velocity . If the observer is far enough away, then the earth must travel a distance of . This will take a total time of 12.97 hrs
Answer: E
Оригинал в Архива: usaaao_first_exam_2022_problems.pdf · официални решения: usaaao_first_exam_2022_solutions-1.pdf