Which of the five major divisions of chemistry is generally considered the most fundamental?
a. Organic chemistry
b. Inorganic chemistry
c. Analytical chemistry
d. Physical chemistry
e. Biochemistry
d
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Resolution: In one particular case, the limiting angle of resolution for an eye is 1.4 × 10-4 rad. What is the minimum separation between two point sources of light that the eye can distinguish if they are at a distance of 40 m from the observer?
A. 2.8 mm B. 5.6 mm C. 1.4 mm D. 8.4 mm E. 4.7 mm
A river flows toward the East at 1.7 m/s. Steve can swim 2.0 m/s in still water. If he swims, relative to the water at a direction of 33 degrees west of north, how long will it take him to cross the 75 m wide river?
A. 45 s B. 39 s C. 123 s D. 27 s
Asteroids ________.
A. are about the same size as planets, but have not pulled themselves into a spherical shape B. are small bodies, typically the size of a grain of sand or a boulder C. are larger objects, a few hundred kilometers in size, but not quite large enough to be classified as a planet D. can range in size from a few meters to many hundreds of kilometers
On a force vs. position graph, the area under the curve is a representation of
A) force. B) position. C) kinetic energy. D) potential energy. E) work.