[試題] 97上黃暉理普通物理學甲上期末考

看板NTU-Exam作者HowmA (蒙其．J．好馬)時間15年前 (2009/01/15 15:28)推噓5(5推 0噓 2→)

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課程名稱︰普通物理甲上課程性質︰大一共同必修課程教師︰黃暉理開課學院：生農學院開課系所︰生物產業機電工程學系考試日期（年月日）︰2009/01/15 考試時限（分鐘）：110分鐘是否需發放獎勵金：是（如未明確表示，則不予發放）試題 : (一) calculation (60% = 15% × 4) 1.A mole of monatomic ideal gas changes from the state (P0,V0) to the state (2P0,2V0). What is the change in entropy? 2.A wave propagates on a string along the +X direction and is totally reflected at x=d, where the string is tied to a post. If the incident wave function is y i (x,t) = A sin( kx-ωt ), what is the reflected wave function yr (x,t)? 3.A pendulum of length L and mass M has a spring of force constant k connected to it at a distance h below its point of suspension as shown in a figure below. Find the period of vibration of the system if the amplitude of vibration is small. Assume the vertical suspension of length L is rigid and its mass is negligible. _____________________ | | |h | | | L |__ /\ ____| | \/ \/ | | k | O M 4.Show that the potential energy for a two particle system is U(r) = － GMm / r （二）Explanation ( 40% = 2.5 × 16 ) 1. Explain what is meant by “the equipartition of energy” 2. What is the total degree of freedom in CO2 molecule? 3 Explain why quantum theory becomes involved in interpreting Cv/R versus temperature for diatomic gas system. 4. It is said to have no change in Eint, heat Q and nor any work W done on or by the system in free expansion. Why then it is accompanied by a change in entropy? 5. Why the free expansion cannot be exactly described in terms of thermodynamic processes? 6. Give a brief explanation about “the second law of thermodynamics”. 7. Why the Avogadro's number for any system of molecule is 6.023X1023 8. Why Cp is always greater than Cv ? 9. What is really meant by ENTROPY? Give a brief explanation. 10. What is the typical thermal energy in unit of ev at room temperature? 11. What is the unique property or condition that a central force can always satisfy? 12. Why a strain or a stress is not a vector? 13. What are the conditions to form a standing wave? 14. Let the Maxwell speed distribution law be written as P(v), give an integral expression of the root-mean-square speed. 15. What causes a rubber band or a balloon to resist stretching?. 16. Explain what is meant by a Carnot Engine. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.109.113.74 ※ 編輯: HowmA 來自: 140.109.113.74 (01/15 15:45)

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lty518

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