USAAAO 2018, I кръг — Задача 24
USAAAO National Astronomy Olympiad First Round 02/12/2018-02/16/2018 Time Limit: 75 Minutes · 12 февруари 2018 г. · 1 т.
Внимание: Бележка към темата
The solutions document provides answer letters for all 30 problems and brief explanations for some problems.
Условие
A star of radius 0.72 solar radii experiences a periodic dip in brightness once every 13.8 days, thought to be a result of an orbiting exoplanet. The normalized flux during one of these dips in brightness is 0.98. What is the radius of the exoplanet?
A. 0.014 solar radii
B. 0.102 solar radii
C. 0.144 solar radii
D. 0.706 solar radii
E. 0.713 solar radii
Решение
Answer: B
Оригинал в Архива: usaaao-first-round-exam-2018.pdf · официални решения: usaaao_first_round_2018.pdf