單班普物的考古題，不知道他面對不同授課對象題目會不會差很多 但我還是先轉了 ※ [本文轉錄自 NTU-Exam 看板 #1IQJ0QrY ] 作者: Standpoint (旋風企鵝) 看板: NTU-Exam 標題: [試題] 100上 王名儒 普通物理學甲上 期中考 時間: Thu Oct 24 22:35:03 2013 課程名稱︰普通物理學甲上 課程性質︰必修 課程教師︰王名儒 開課學院：工學院 開課系所︰材料系 考試日期（年月日）︰100.11.16 考試時限（分鐘）：120 分鐘 是否需發放獎勵金：是 （如未明確表示，則不予發放） 試題 : 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. --

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※ 發信站: 批踢踢實業坊(ptt.cc) ※ 轉錄者: t1016d (140.112.196.190), 10/26/2015 20:54:19 ※ 編輯: t1016d (140.112.196.190), 10/26/2015 20:55:32