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本题是2009年江苏省学业水平测试的第23题,是选择题的最后一题,属于压轴冲A题,是一道物理知识与生活紧密联系的创新题,是一道考查知识与能力相结合的具有较高选拔功能的好题。参考答案对其只给出一个选项解答,经过笔者潜心研究和探析,发现本题有多种不同的解法,现介绍几种,以说明考生应具有分析综合能力及应用数学物理相结合处理物理问题的能力。
This is the 2009 Jiangsu Province academic level test of the 23 questions is the last question of multiple choice questions, which belongs to the acupuncture red A question is a physical knowledge and life closely linked to the innovative problem is a test of knowledge and ability to combine with High selection of features a good question. The reference answer gives only one option to answer, after the author painstaking research and analysis, found that the problem there are many different solutions, are introduced to illustrate the candidates should have the ability to analyze and the application of mathematical physics combined to deal with physical problems ability.