The Semimajor Axis of Pluto's Orbit Is Almost 40 AU

question 183

Multiple Choice

The semimajor axis of Pluto's orbit is almost 40 AU.The smallest parallax angle we can measure from orbiting observatories is about 0.001 arcsec.Suppose we use this technique to measure parallax from Pluto's orbit (over the course of half a Pluto "year") .What is the maximum distance we could measure?

• A) 40 pc
• B) 1000 pc
• C) 40,000 pc
• D) 80,000 pc

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Definitions:

Exhibits Specificity

Describes the quality of being precise or particular in the interaction, such as the way enzymes selectively bind to specific substrates.

ATP

Adenosine triphosphate, the principal molecule for storing and transferring energy in cells.

Carrier Molecule

A molecule that facilitates the transport of another molecule across a cell membrane, often requiring energy.

Cellular Energy

Energy stored in the cells that is necessary for various functions including metabolism, chemical synthesis, and muscular contraction, mainly produced in the form of ATP.