A person on the edge of a roof throws a ball downward. It strikes the ground with 100 J of kinetic energy. The person throws an identical ball upward with the same initial speed, and this too falls to the ground
Neglecting air resistance, the second ball hits the ground with a kinetic energy of A) 100 J.
B) 200 J.
C) less than 100 J.
D) more than 200 J.
E) none of the above
A
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The sociologist Raymond Williams once wrote: “…the idea of nature contains, though often unnoticed, an extraordinary amount of human history.” What did he mean by this? Of what theoretical approach is this statement an example? In your answer, draw upon the materials of this course to give at least three applications of Williams’ insight.
What will be an ideal response?
Which of the following is NOT true regarding language families?
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A mass of sediment composed of a widerange of grain sizes, at least 20% of which is gravel-sized,is called _____
a. rock b. mud c. talus d. debris e. soil
Which of the following is not a step in the global nitrogen cycle?
A. Nitrogen fixation B. Nitrification C. Photosynthesis D. Denitrification E. Ammonification