Compressions and rarefactions of sound waves normally travel
A. in opposite directions.
B. at different speeds.
C. at reduced frequencies.
D. none of the above
Answer: D
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Which of the statements is true?
A. When forces are applied to an object, the object is under stress. B. Stresses can be compressive, tensional, or shear. C. Strain is the change in shape or size (volume), or both, while an object is undergoing stress. D. All of these choices are correct.
Heating or cooling of large bodies of air requires many days because
A) energy transfer is not an instantaneous process. B) energy transfer is an instantaneous process. C) the process takes place only during nighttime. D) the process takes place only during daytime.
A common inhabitant of the supratidal zone on the rocky shores of the Pacific Northwest is the ________
A) gooseneck barnacle B) mussel C) kelp D) periwinkle snail E) sea urchin
According to your text, a cult is defined by
A) how weird or marginal it is perceived compared to dominant religions. B) where it originated. C) who established the belief system. D) the characteristics of its gods. E) whether or not its adherents go to heaven.