IOAA 2016, theory — Задача 1. True or False
Автор: Olympiads XYZ · транскрипция на официалните материали
Проверена срещу оригинала на 13.9.2026 от същия модел, който я е транскрибирал (без независима проверка)
Theoretical Examination · 10 т.
Внимание: Бележка към темата
Решенията липсват — в този прозорец е показан само документът с задачи.
Условие
Determine if each of the following statements is True or False. In the Summary Answersheet, tick the correct answer (TRUE / FALSE) for each statement. No justifications are necessary for this question.
T1.1 In a photograph of the clear sky on a Full Moon night with a sufficiently long exposure, the colour of the sky would appear blue as in daytime. [2 т.]
T1.2 An astronomer at Bhubaneswar marks the position of the Sun on the sky at 05:00 UT every day of the year. If the Earth's axis were perpendicular to its orbital plane, these positions would trace an arc of a great circle. [2 т.]
T1.3 If the orbital period of a certain minor body around the Sun in the ecliptic plane is less than the orbital period of Uranus, then its orbit must necessarily be fully inside the orbit of Uranus. [2 т.]
T1.4 The centre of mass of the solar system is inside the Sun at all times. [2 т.]
T1.5 A photon is moving in free space. As the Universe expands, its momentum decreases. [2 т.]
Решение
Внимание: Непълно решение
Официалните решения не са включени в прозореца на този четец.
Оригинал в Архива: theory-qp.pdf · официални решения: theory_sol.pdf