When a pair of objects collide, the momentum before and after collision is the same for
A. elastic collisions.
B. inelastic collisions.
C. both of these
D. none of the above
Answer: C
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In which of the following conditions do secondary rainbows occur?
A. when light refracts through a cloud of large raindrops B. when two internal reflections of light occur in raindrops C. when light refracts through ice crystals D. when a single internal reflection of light occurs in raindrops
Chart
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Refer to the diagram above.
Where would a surface high-pressure area moving toward the southeast most likely be found?
A. 1 B. 2 C. 3 D. 4
How did the species of australopithecines differ? How were they similar? What will be an ideal response?
According to the textbook, one-fifth of the world living in the developed world consumes ________ of the world's goods
A) five-sixths B) three-quarters C) two-thirds D) half E) one-third