IOAA 2013, Отборен тур, хоризонтални въпроси — Задача 2. B

IOAA 2013 — Team Competition: Horizontal questions · 17 т.

Условие

i. How many AU is one parsec? (integer) [6 т.]

ii. Jupiter-Sun-Trojan Asteroids angle (degrees). (integer) [2 т.]

iii. This nebula is M_. [2 т.]

iv. On the 25th of August, at a latitude of $\phi>0$ and longitude $\lambda_L=37^{\circ}W$ (time zone = GMT – 2hrs), we observe a star with Declination ($\delta$) such that $\phi+\delta=90$, and Right Ascension $\alpha=67.5^{\circ}$. What is the local civil time at the hh:mm during the lower culmination of the star? It is given that at 00:00hrs on the 24th of August, hour angle of vernal equinox is $21^{h}\ 58^{m}$. [4 т.]

v. During a Meteor Shower, in a radius of 100km, an observer counted 600 meteors/min. If the rest frame velocity of the meteors was 10km/s with opposite direction to that of the Earth’s orbital velocity, what is the mean distance between two meteors in km? Assume cylindrical geometry. (integer) [2 т.]

vi. The photon’s spin. [1 т.]

Отговори

Решение

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Оригинал в Архива: Horizontal_questions.pdf