Two identical air-track gliders slide toward each other. One moves at 1 m/s and the other moves at 2 m/s. For an inelastic collision the combined-glider speed will be
A. 3/4 m/s.
B. 1/6 m/s.
C. 1/2 m/s.
D. 1/3 m/s.
Answer: C
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What cultural bias has created problems with China's one-child policy?
A. strong preference for boys B. refusal by men to wear condoms C. expensive health care D. lack of available contraceptives
Atmospheric Aerosols
What will be an ideal response?
"Tornado Alley"
A) stretches from the southern Plains to the lower Great Lakes. B) is the nickname for the Storm Prediction Center in Norman, Oklahoma. C) is located in Florida. D) is a strip running from Kansas to western Pennsylvania.
You were in a discussion with a classmate who complained that immigrants were taking away jobs and abusing social services. In response, another classmate who is a proponent of the open door policy explained that immigrants can actually be a bonus to a country. Someone supporting an open door policy would NOT use which of the following statements?
A. Immigrants usually perform work at a pay scale that citizens are unwilling to accept B. Immigrants are usually of a different racial or ethnic background and add cultural diversity C. Immigrants usually perform dangerous work that citizens are unwilling to do D. Immigrants are usually welcomed by other immigrants or descendants of immigrants E. All of these would probably be used by someone supporting an open door policy