Molecular Rotation: For a diatomic quantum mechanical rotator, the energy difference between adjacent energy levels
A. increases as L increases.
B. decreases as L increases.
C. is constant for all L.
D. varies randomly as L increases.
Answer: A
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Why didn't the Viking landers find organic molecules in the soil on Mars?
A) The Martian soil contains perchlorate, which destroyed the organic molecules when heated during the experiments. B) There are no organic molecules on Mars because they were carried away by the solar wind. C) The Viking landers were not designed to detect organic molecules. D) Organic molecules exist too deep below the surface of Mars to be detected.
What is meant by Occam's Razor?
A) a well-designed experiment that clearly shows the differences between two competing theories B) a poorly designed experiment that fails to show the difference between two competing theories C) the idea that scientists should prefer the simpler of two models that agree equally well with observations D) the fine line between science and pseudoscience E) the shaving implement of a medieval scholar
A rise in pressure is an indication
A) of an approaching cold front. B) that a cold front has passed. C) orographic lifting. D) a stationary front.
The graphical representation of stream discharge over a period of time.
What will be an ideal response?