IOAA 2013, Отборен тур, хоризонтални въпроси — Задача 1. A
IOAA 2013 — Team Competition: Horizontal questions · 17 т.
Условие
i. first astronomer to suggest that the Earth is not the center of the Universe?
- Galileo
- Aristarchus
- Copernicus
- Cassini
- Zhang Heng
- al-Biruni
- Kepler
- Brahe
- Aryabhatta [1 т.]
ii. The obliquity of the ecliptic in degrees. (one decimal) [3 т.]
iii. The first known and brightest quasar is 3C_. [3 т.]
iv. A relativistic jet moves at 0.83c. If no Doppler shift is observed, how many degrees is the angle between the jet and the line of sight, assuming that the source has negligible velocity? (integer) [3 т.]
v. This nebula is NGC_. [4 т.]
vi. Choose the names of the layers A, B and C of the Jovian atmosphere, beginning from Layer A.
- Troposphere
- Magnetosphere
- Ionosphere
- Ozone layer
- Thermosphere
- Lithosphere
- Chromosphere
- Photosphere
- Stratosphere [3 т.]
Отговори
i. 2
Answer code as printed after the points (digits only, without decimal point or units).
ii. 234
Answer code as printed after the points (digits only, without decimal point or units).
iii. 273
Answer code as printed after the points (digits only, without decimal point or units).
iv. 122
Answer code as printed after the points (digits only, without decimal point or units).
v. 7000
Answer code as printed after the points (digits only, without decimal point or units).
vi. 195
Answer code as printed after the points (digits only, without decimal point or units).
Решение
Внимание: Непълно решение
No worked solutions in the archive; only the answer codes printed after each question are available.
i. [1] - 2
ii. [3] - 234
iii. [3] - 273
iv. [3] - 122
v. [4] – 7000
vi. [3] - 195
Оригинал в Архива: Horizontal_questions.pdf