2007CAP Prize Exam加拿大高中物理大奖赛真题答案下载

历年CAP High School Prize Exam加拿大高中物理大奖赛

真题与答案下载

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2007 CAP Prize Exam完整版真题免费下载

共计3小时考试时间

此套试卷由三部分组成

20道选择题

5道带绘图简答题

以及3道开放性简答题组成

每道大题含有不同数量的小题

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2007 CAP Prize Exam完整版真题

2007CAP Prize Exam加拿大物理奥林匹克完整版答案免费下载

部分真题答案预览：

Part A选择题部分：

1. C
2. D
3. B
4. B
5. B

Part B简答题部分

Solution to Problem 21：

The material of both balls is an insulator. Therefore, charges cannot travel inside the balls. However, the electric field of the charged ball induces the polarization of molecules in the neutral ball and the neutral ball may be treated as a dipole. However, the electric field of the dipole is weaker than the field between the charged ball and the negative “end” of the neutral ball. Therefore, the field lines everywhere have the horizontal component from the charged ball to the neutral ball. The position of the balls and their threads does not change relatively to the initial one, as the balls attract each other.

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