Many people think that it's no big deal to separate their recyclables, while others think the opposite. Imagine being in both these persons' minds, and discuss how recyclable separation could seem easy or hard to that person
What will be an ideal response?
Easy: If a person is organized, it is not hard to arrange separation of recyclables.
Materials can be recycled at the curb or trips to drop off recyclables can be part of other
errands.
Hard: Extra work is necessary, a person has to think when discarding materials, separate
containers are needed, these must be emptied periodically, the materials cannot be stored in
the same place, special trips must be made to return materials, etc.
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Which of the following best describes the meaning of declination and right ascension?
A) They are coordinates on the celestial sphere that are very similar to the coordinates of altitude and direction on Earth. B) They are used to describe the locations and distances of stars that we see in the night sky. C) They are coordinates on the celestial sphere, with declination telling us the angular distance of an object from the celestial equator and right ascension telling us how far around the celestial sphere an object is located from the vernal equinox. D) They are terms used by astronomers to describe how the sky changes with the seasons.
Four electrons move from point A to point B in a uniform electric field as shown below. Rank the electrons in diagrams I through IV by the changes in potential from most positive to most negative when traveling from A to B.
A. I = II = III = IV. B. II = III > I > IV. C. III > I = IV > II. D. II > I = IV > III. E. I > II = III > IV.
A rabbit trying to escape a fox runs north for 8.0 m, darts northwest for 1.0 m, then drops 1.0 m down a hole into its burrow. What is the magnitude of the net displacement of the rabbit?
A) 8.8 m B) 8.1 m C) 66 m D) 10 m
According to the selection rules, which of the following transitions is not allowed?
A) n = 3, ? = 2 to n = 2, ? = 1 B) n = 4, ? = 3 to n = 3, ? = 2 C) n = 3, ? = 1 to n = 1, ? = 0 D) n = 2, ? = 1 to n = 1, ? = 0 E) n = 4, ? = 2 to n = 3, ? = 2