When we say there is no such thing as only one force, we mean
A. there must also be an oppositely directed force.
B. other forces, perhaps not evident, are there.
C. both of these
D. none of the above
Answer: A
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A package of weather instruments carried aloft by a balloon is called a
A) radiosonde. B) thermistor. C) bimetallic strip. D) thermograph.
The presence of a thin film of water on the surface of sand grains results in ________ angle of repose
A) a higher B) a lower C) no change in the
Instructions: Choose one answer from each pair of selections. If you use liquid-in-glass thermometers to record temperatures below -50°C, you will need one that uses ALCOHOL | MERCURY as a liquid
In less-developed countries, how many urban-dwellers live in poverty?
A. 500 million B. 200 million C. 600 million D. 1 billion E. 2.5 billion