推 lty518 :助教缺錢齁 01/15 21:55
推 xx7983 : 助教 你太誇張了!!!XDDD哈 01/16 00:25
推 NBASCIDM :你這樣才240,給我會有10000啦 01/16 12:47
推 abacada :樓上厲害.......XD 01/16 20:18
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.
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※ 編輯: HowmA 來自: 140.109.113.74 (01/15 15:45)