State the Pauli Exclusion principle
What will be an ideal response?
No two electrons in an atom can have the same set of quantum numbers.
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How does the Milky Way compare to other spiral galaxies in size?
What will be an ideal response?
A solid lead sphere of radius 10 m (about 66 ft across!) has a mass of about 57 million kg. If two of these spheres are floating in deep space with their centers 20 m apart, the gravitational attraction between the spheres is only 540 N (about 120 lb). How large would this gravitational force be if the distance between the centers of the two spheres were tripled?
A. 60 N B. 180 N C. 1620 N D. 4860 N
Apparent retrograde motion occurs when a planet appears to
A) be stationary with respect to background stars B) move eastward with respect to background stars C) move due north with respect to background stars D) move westward with respect to background stars
A heavy rock and a light rock of the same size are falling through the air from a tall building. The one that encounters the greatest air resistance is the
C) same for both