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
april 15
Explanation:
When to file
If you're a calendar year filer and your tax year ends on December 31, the due date for filing your federal individual income tax return is generally April 15 of each year
Answer:
true
Explanation:
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No, it's main coastline is on the Atlantic Ocean
Answer:
C Proportional measurement
Explanation:
Scales are used to represent proportional measurement. They are mostly used to represent the proportion of real life dimension to the figure on paper or a computer system.
By use of scale we can represent a large detail area with proportionate sizes on paper.
- Scales are used extensively in map making or cartography.
- Objects on map are usually represented proportionately with their dimension on the ground.
- There are different ways of representing a scale.
- There is relative fraction, statement scale and bar scale.
- An adept map reader should be able to translate between map and real life data.
Therefore, the correct choice is that scales represent proportional measurement.
