A thin math book and a thick science book are joined by a string on a horizontal friction-free table. One book is pushed off the edge of the table. As it falls, the other book (different mass) is dragged horizontally across the table surface. Acceleration of the books is
A. between zero and g.
B. g.
C. zero.
D. g/2.
E. greater than g.
Answer: A
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Determine the correct description for each of the lettered areas.
a) ______________ ; acres: ______________
b) ______________ ; acres: ______________
c) ______________ ; acres: ______________
d) ______________ ; acres: ______________
e) ______________ ; acres: ______________
f) ______________ ; acres: ______________
The hau of material objects refers to:
a) superstitious belief in animate objects. b) the utility of material objects that serve our interests. c) sentimental connections and social relationships embodied in things. d) the respect we have for tools and technologies created by humans.
Which of the following farming practices would be expected to produce the least nutrient leaching and thus contribute most to soil sustainability?
A) Deep plowing, irrigation, and the use of inorganic fertilizers B) Deep plowing, no irrigation, and the use of inorganic fertilizers C) No plowing, irrigation, and the use of organic fertilizers D) No plowing, drip irrigation, and the use of organic fertilizers
Tsunamis and earthquakes have killed millions of people during human history. What branch of the Earth sciences is the main group that studies these phenomena?
What will be an ideal response?