一个正在沿直线行驶的汽船,关闭发动机后,由于阻力得到一个与速度反向、大小与船速平方成正比例
(1)试证在关闭发动机后,船在t时刻的速度大小为
(2)试证在时间t内,船行驶的距离为
(1)试证在关闭发动机后,船在t时刻的速度大小为
(2)试证在时间t内,船行驶的距离为
What is the main critique against the WTO with respect to environmental protection? How does the WTO justify its position on trade disputes that involve environmental issues?
It is fairly common for an industrial cluster to break up and for production to move to locations with lower wages when the technology of the industry is no longer rapidly improving--when it is no longer essential to have the absolutely most modern machinery, when the need for highly skilled workers has declined, and when being at the cutting edge of innovation conveys only a small advantage. Explain this tendency of industrial clusters to break up in terms of the theory of external economies.
Suppose that workers involved in manufacturing are paid less than all other workers in the economy. What would be the effect on the real income distribution within the economy if there were a substantial tariff levied on manufactured goods?
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