Flexible buildings (made of wood or steel) have a ________ resonant period than a stiffer building (one of brick or concrete).
A. period does not depend on building stiffness
B. longer
C. shorter
Answer: B
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What is the difference between a negawatt and a megawatt?
A) A negawatt is a megawatt of energy saved, while a megawatt is a million watts of energy used. B) A negawatt is any amount of energy saved, while a megawatt is a measure equal to a million watts of energy. C) A negawatt is the equivalent of 1 kilowatt of energy saved, while a megawatt is the equivalent of 1 kilowatt of energy used. D) A negawatt is one thousand watts, while a megawatt is one million watts.
A tentative, testable statement about the general nature of a phenomenon is called a/an ________
A) guess B) law C) observation D) hypothesis E) theory
The best approach for slowing worldwide deforestation will require ________
A) limiting biodiversity losses B) focus on charcoal use in developed countries C) focus on soil erosion issues D) multiple strategies E) focus on limiting consumption in developing countries
Which of the following fish is safe and environmentally friendly to eat?
A. Wild salmon B. Yellowfin tuna C. Swordfish D. Haddock E. Albacore tuna