If a star is located at 10 pc, which of the following statements is correct?
a. The star's apparent and absolute visual magnitudes are equal. b. The star's apparent and absolute visual magnitudes are 0.
c. The star's apparent visual magnitude is –-1.1 whereas the absolute visual magnitude is –5 d. Two of the other choices are correct.
d
RATIONALE: The star's magnitudes could be equal to each other or both equal to zero.
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Match the words in the left-hand column to the appropriate blanks in the sentences in the right-hand column. Use each word only once.
Saturn, Earth, Mars, Venus, Uranus, Mercury, Jupiter, Neptune
1. ____________ has a rotational axis that is tilted so much it lies nearly in the plane of its orbit.
2. ____________ is the planet with the highest average surface temperature.
3. The planet that orbits closest to the Sun is __________.
4. The only rocky planet to have more than one moon is ___________.
5. ___________ is the jovian planet that orbits closest to the Sun.
6. Most of the surface of _________ is covered with liquid water.
7. ___________ is about 30 times as far from the Sun as our own planet.
8. The planet with the lowest average density is ___________.
Where must an object be placed with respect to a converging lens of focal length 30 cm if the image is to be virtual, and three times as large as the object?
What will be an ideal response?
The amount of discharge at any given place and time that is only due to groundwater input is called
What will be an ideal response?
The eight corners of a cubic lattice unit cell contribute ______________lattice point(s) to the unit cell.
Fill in the blank(s) with the appropriate word(s).