Although the light year is a
commonly used unit, astronomers
prefer a different unit called the parsec (pc). A parsec, equal to 3.26
light years, is defined as the distance at which 1 Astronomical Unit subtends an
angle of 1 second of arc (1/3600 of a degree) When we use the parsec for really
large distances, we often put a prefix in front of it - like kiloparsecs (kpc),
which are equal to 1000 parsecs - or Megaparsecs (Mpc), equal to a million
parsecs.
The Milky Way is about 1,000,000,000,000,000,000 km
(about 100,000 light years or about 30 kpc) across. The Sun does not lie near
the center of our Galaxy. It lies about 8 kpc from the center on what is known
as the Sagittarius arm of the Milky Way.
Answer:
For b. 11*3x = 33x
For c. (3x-4)(11x-2) = 
Explanation:
For b. Since it is a rectangular the A = l*w
w = 11 & l = 3x => A = 11*3x = 33x
For c. Since it is a square we could assume that the A =
a side squared (since they all have the same length) but to be on the safe side, we'll assume it is not a square and do the math of multiplying one side by another (just like for a rectangle)
Side up = 3x + (-4) = 3x-4
Side left = 11x + (-2) = 11x-2
Side up * Side left = (3x-4)(11x-2) =
The correct answer is C) Logging. Hope this helps.
Answer:
(d) Tailed Star
Explanation:
The solar system are planetary bodies made up of the Sun and nine planets which rotate around the sun or have revolution around each other to cause seasons of the year or climatic conditions.
The Morning Star and Evening Star are used to describe Venus, one of the planets. The Pole Star is another member of the solar system, but the Tailed Star is not a member of the solar system.
Answer:
Tectonic Activities in the plates are responsible for the sharp shape of Earth's mountain.
Explanation:
Mountains on the earth are form because of the tectonic activities. Basically FOLD MOUNTAINS are more sharp because they are young and less eroded.
Fold mountains form when two tectonic plates collide with each other, both the plates are light in weight so no plate is ready to go downward, But because of speed and density difference one plate ob duct( obduction is word used for the submergence of continental plate as subduction in case of oceanic plates.). And the plate which is under pushes the upper plate which gives extra push to the mountains formation and result as a sharp peak mountains.
EX:- Himalaya, Andes.
And No such tectonic process takes place on the moon so mountains on moon are once formed and now they are eroding.
