单班普物的考古题，不知道他面对不同授课对象题目会不会差很多 但我还是先转了 ※ [本文转录自 NTU-Exam 看板 #1IQJ0QrY ] 作者: Standpoint (旋风企鹅) 看板: NTU-Exam 标题: [试题] 100上 王名儒 普通物理学甲上 期中考 时间: Thu Oct 24 22:35:03 2013 课程名称︰普通物理学甲上 课程性质︰必修 课程教师︰王名儒 开课学院：工学院 开课系所︰材料系 考试日期（年月日）︰100.11.16 考试时限（分钟）：120 分钟 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 1. A grasshopper leaps upward, rising 0.4 meter in 0.2 xecond. How much higher will it go ? Assuming the air effect is negligible and g = 10.0 m/sec^2. 2. A particle moves along the positive x-axis with x = 0 at t = 0. The x-t plot in SI units shows a half circle with unit size. What is the acceleration as a function of time for this particle ? 3. Find the work done by the force F(x,y) = xy^2 i+xy j along the line y = x from point (0,0) to (2,2). 4. Derive the work-kinetic energy theorem W = ΔK by Newton's Law, where W is the work done by the net force and K = 1/2mv^2 is the kinetic energy. 5. A 100 kg rock slides from rest down a hilliside that is 130 m long and 50 m high. The coefficient of kinetic friction between the rock and the paved hill surface is 0.25. What is the speed of the rock as it reaches the bottom of the hill ? 6. Following 5, if the rock has a spherical shape with 0.2 m in radius and is rolling down, what will be the speed of the rock as it reaches the bottom of the hill ? 7. Show that if a neutron is scattered through 90度 in an elastic collision with an initially stationary deuteron in the Lab, frame, the neutron loses 2/3 of its initial kinetic energy to the deuteron. Note that m(deteron) = m(neutron). 8. A large amount of ice with mass m around the South Pole melted and flew into the ocean. Assuming that earth is a uniform sphere with radius R and mass M, what will be the percentage change of the rotational speed of the earth due to this melting ice effect ? Note that the rotational inertia is 2/3 MR^2 for a spherical shell and 2/5 MR^2 for a solid sphere. 9. Three bricks of length L, identical and uniform, are stacked on top of one another in such a way that part of each extends beyond the one beneath. What will be the maximum length of this stack assuming that the stack is kept in equilibrium ? 10. A very massive star with mass M can collapse after burning its fuel out. Make a rough estimate about the critical radius that when this star is small than this size, no particles ( even photons ) can escape. --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.112.243.14

※ 发信站: 批踢踢实业坊(ptt.cc) ※ 转录者: t1016d (140.112.196.190), 10/26/2015 20:54:19 ※ 编辑: t1016d (140.112.196.190), 10/26/2015 20:55:32