IOAA 2013, Отборен тур, хоризонтални въпроси — Задача 10. J
IOAA 2013 — Team Competition: Horizontal questions · 17 т.
Условие
i. Each Zodiacal Sign extends for that many degrees along the ecliptic. [2 т.]
ii. You are given the light curve of a pulsar. What is its rotation period (ms) if the time interval between two “ticks” is 1.1965ms? (one decimal) [3 т.]
iii. Pipe Nebula, Trifid Nebula, Lagoon Nebula, Cat’s Paw Nebula, Eagle Nebula [5 т.]
iv. Write the corresponding numbers of the three biggest asteroids in descending order:
- Hygiea
- Ceres
- Eugenia
- Pallas
- Fortuna
- Aurora
- Nemesis
- Vesta
- Psyche [3 т.]
v. Baade and Hubble measured the distance to NGC 1049 to be 188 kpc. Thus the distance modulus (m – M) they would get for this galaxy is (2 decimal points) [4 т.]
Отговори
i. 30
Answer code as printed after the points (digits only, without decimal point or units).
ii. 335
Answer code as printed after the points (digits only, without decimal point or units).
iii. 63591
Answer code as printed after the points (digits only, without decimal point or units).
iv. 248
Answer code as printed after the points (digits only, without decimal point or units).
v. 2137
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. [2] - 30
ii. [3] - 335
iii. [5] - 63591
iv. [3] - 248
v. [4] – 2137
Оригинал в Архива: Horizontal_questions.pdf