2005CAP Prize Exam加拿大高中物理大獎賽真題答案下載

歷年CAP High School Prize Exam加拿大高中物理大獎賽

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2005 CAP Prize Exam完整版真題免費下載

共計3小時考試時間

此套試卷由25道選擇題以及3道大題組成

每道大題含有不同數量的小題

請點擊訪問下方鏈接進入下載頁面

2005 CAP Prize Exam完整版真題

2005CAP Prize Exam加拿大物理奧林匹克完整版答案免費下載

部分真題答案預覽：

Part A選擇題部分：

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

Part B簡答題部分

Solution to Problem 2：

(a) The force on the panel, or the rate of momentum change, is equal to the product of the number of molecules that strike the panel per unit of time with the change of mo-mentum of individual particles when they collide with the panel. Since the molecules are absorbed, they come to rest and the change is equal to the incident momentum itself.

If n is the number of molecules per unit volume, the number that strike the panel per unit of time, or ?ux, is equal to the product of n with the surface A of the panel and the component of the molecules’ velocity per-pendicular to the panel. The momentum of an individual incident molecule perpendicular to the panel is its mass m times the component of of its velocity perpendicular to the panel. Since nm = ω, the mass density of the molecules, this gives F = ωAv² , with v the average speed of the molecules with respect to the panel, when the ?ux is perpendicular to it.

 

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