Due to the advent of humans orbiting in space, the usual definition of weight is extended beyond gravitation due to the
A. absence of gravity in free space.
B. support force provided in rotating habitats.
C. both of these
D. none of the above
Answer: B
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A. A narrow zone around a star where liquid water can exist B. A zone defined by abundant sunlight C. A zone with abundant plant growth D. A zone where oxygen is present
If ground water is contaminated with petroleum products, pumping from a level close to the water table may selectively extract much of the pollution.
Answer the following statement true (T) or false (F)
The federal government manages roughly 35% of the country's land, which is jointly owned by ____.
A. native Americans B. the Bureau of Land Management C. various corporations D. all U.S. citizens E. the National Park System
Very large red stars, such as Betelgeuse in the constellation Orion, are called ________
Fill in the blank(s) with correct word