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How does parsec differ from a second?

Answer 1

Parsec is a unit of length in astronomy. It is 3.26 Astronomical units. or 31 trillion kilometers.
Second is 1/3600 part of a hour.

In stellar astronomy, a parsec is a second unit of time and length.

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Answer 2

Ian Aitchison

A parsec (pc) is a unit of distance used in astronomy, representing the distance at which one astronomical unit (AU) subtends an angle of one arcsecond. It is equivalent to about 3.26 light-years or approximately 30.86 trillion kilometers.

A second (s) is a unit of time, commonly used in the International System of Units (SI), representing a duration of time. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.

In summary, parsec is a unit of distance used in astronomy, while a second is a unit of time used in various fields of science and everyday life.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.