This diagram represents an edge-on view of our Milky Way Galaxy. Of the four labeled points, which one could represent the Sun's position in the galaxy?
A) point 1
B) point 2
C) point 3
D) point 4
A) point 1
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A spectroscopic binary shows periodic variations in its
a. radial velocity. b. proper motion. c. brightness. d. mass. e. spectral type.
What are the similarities and differences between the Kelvin and Fahrenheit temperature scales? Identify the freezing point of water on both scales
What will be an ideal response?
A jar of peanut butter costs $3.29. Express its price in dekadollars and decidollars
A) 0.329 dekadollars; 0.329 decidollars B) 32.9 dekadollars; 0.329 decidollars C) 329 dekadollars; 32.9 decidollars D) 0.329 dekadollars; 32.9 decidollars E) 32.9 dekadollars; 329 decidollars
Where are the X-rays produced that are emitted by quasars and other active galactic nuclei?
A) in the hot gas in an accretion disk around a central black hole B) in dust grains in molecular clouds that encircle the active galactic nucleus C) in an ionization nebulae of interstellar gas surrounding the accretion disk D) in fast-moving jets of electrons that are ejected from the active galactic nucleus E) all of the above