IOAA 2013, Отборен тур, вертикални въпроси — Задача 16. P.
13 т.
Условие
i. What is the Azimuth of the point ♈ (degrees) at the 18 Sidereal Hour? (integer) [2 т.]
ii. Shape of Analemma of the Sun as seen from the Earth [1 т.]
iii. What is the distance of a galaxy (in Mpc) with recession velocity of 13966.8km/s? [3 т.]
iv. The apparent speed of this active galaxy’s jet is ! If the angle of the jet with the line of sight is , what is the true speed of the jet? (up to 3 decimal) [4 т.]
v. On the 21 of March, at a place with latitude , during the sunset, a star on the ecliptic is at its upper culmination. What is its zenith distance in degrees? (one decimal) [3 т.]
Отговори
i. 90
Printed after the question as the grid entry (“- 90”) of the crossword answer sheet.
ii. 8
Printed after the question as the grid entry (“- 8”) of the crossword answer sheet.
iii. 206
Printed after the question as the grid entry (“- 206”) of the crossword answer sheet.
iv. 0993
Printed after the question as the grid entry (“- 0993”) of the crossword answer sheet.
v. 115
Printed after the question as the grid entry (“- 115”) of the crossword answer sheet.
Решение
Внимание: Непълно решение
The paper prints only the answer code after each question (the crossword grid entry); no worked solution is given.
i. - 90
ii. - 8
iii. - 206
iv. - 0993
v. - 115
Оригинал в Архива: Vertical_questions.pdf