IOAA 2013, Отборен тур, вертикални въпроси — Задача 6. F.
13 т.
Условие
i. Every __ years (integer), Halley’s comet appears! [2 т.]
ii. The relative error of the spectroscopic parallax is and the absolute error of the trigonometric parallax is . Over which distance (pc) the spectroscopic parallax becomes more accurate than the trigonometric? (integer) [2 т.]
iii. The molecular weight (in a.m.u.) of the main constituent of Titan’s oceans [2 т.]
iv. 189.08 light years in parsec (integer) [2 т.]
v. In the beginning of July this planet stopped its retrograde motion. How many AU is its mean orbital radius? (one decimal) [2 т.]
vi. Sojourner, Lunokhold 1, Curiosity [3 т.]
Отговори
i. 75
Printed after the question as the grid entry (“- 75”) of the crossword answer sheet.
ii. 30
Printed after the question as the grid entry (“- 30”) of the crossword answer sheet.
iii. 16
Printed after the question as the grid entry (“- 16”) of the crossword answer sheet.
iv. 58
Printed after the question as the grid entry (“- 58”) of the crossword answer sheet.
v. 96
Printed after the question as the grid entry (“- 96”) of the crossword answer sheet.
vi. 342
Printed after the question as the grid entry (“- 342”) 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. - 75
ii. - 30
iii. - 16
iv. - 58
v. - 96
vi. - 342
Оригинал в Архива: Vertical_questions.pdf