[試題] 96上 陸駿逸 普通物理學甲上 期末考

作者sssssisme (S.L)

看板NTU-Exam

標題[試題] 96上陸駿逸普通物理學甲上期末考

時間Thu Jan 24 14:43:36 2008

課程名稱︰普通物理學甲上課程性質︰必修課程教師︰陸駿逸開課學院：理學院開課系所︰化學系必帶, 地質系選修考試日期（年月日）︰2008/01/17 考試時限（分鐘）：130min 是否需發放獎勵金: 是（如未明確表示，則不予發放）試題 : * Use enough words (in Chinese or English) to explain your reasoning and thought (GRADES VERY MUCH EDPENDS ON THIS) * Read the questions carefully. Answer accurately the questions asked. 1. (10pts) Consider a pendulum of the shape of a (solid) triangle. Its three edges have the same length 1m. The mass of the pendulum is 1kg. The pendulum can rotate around its tip. (a) Calculate the moment of the inertia. (b) When the pendulum vibrates with a small amplitude, calculate its frequency. 2. (10pts) A string with the mass per unit length μ is under the tension τ. Derive the wave equation for the transverse waves. 3. (10pts) Consider the air as an ideal gas with the constant heat capacity 5R/2 per mol, where R=8.3J/mol*K. When the sound wave is propagating through the air, the air is compressed or expanded. (a) Assume that the air is compressed without exchanging heat with the environment (adiabatic process). Calculate the bulk modulus B = -V^-1 * (dV/dP) (d為偏微分) (b) Estimate the density of the air at the room temperature. (c) Calculate the speed of the sound wave. 4. (10pts) Entropy (a) Write down the definition of the entropy change. (b) One mole of the ideal gas undergoes the free expansion from 24.4L, 1atm (298K) to 73.2L. Calculate the heat and the work of this process. (c) What is the entropy change? 5. (10pts) Suppose that an alien brings you a wonderful engine. In each cycle it extracts heat Q1 = 700J from T1 = 350K heat reservoir, releases heat Q2 = -375J to T2 = 325K heat reservoir, and Q3 = -250J to T3 = 300K heat reservoir. (a) Check the Clausius theorem to see whether it still valids? (b) Use this engine to show that the 2nd law of the thermodynamics will be violated. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.167.187.89

推 samueldallas:原PO大神 01/24 15:22

推 timor: 原PO大神推爆它 01/25 16:55

推 kwhmagic: 原PO大神 01/26 00:22

推 michael9002: 原PO大神 01/26 00:47

推 huchunfm06: 原PO大神 01/26 01:31

推 Julibea: 原PO大神 01/26 01:33

推 timor: 原PO大神 01/26 07:17

推 timor: 原PO大神 01/26 13:32

推 candy79729: 原PO大神 01/26 22:07

推 blackpanther:原PO大神 01/27 00:49

推 timor: 原PO大神樓上法現的組長(^o^)> 01/27 01:59

推 Julibea: 原PO大神也是同系學長其實 01/27 02:46

推 timor: 原PO大神超認真的學長 01/27 09:39

推 kwhmagic: 原PO大神樓上小朋友是杜鵑花展示組組長其實 01/27 13:43

推 timor: 原PO大神樓上希望戰火延綿其實 01/27 13:48

推 Julibea: 原PO大神樓上每個板都想開戰其實 01/27 15:32

推 timor: 原PO大神我又不是好戰份子!!其實 01/27 17:29

推 kwhmagic: 原PO大神其實 01/27 18:48

推 timor: 原PO大神 01/27 19:01

推 candy79729: 原PO大神 01/27 22:54

推 timor: 原PO大神 01/28 22:51

推 rabbitmix: 原PO大神肚子餓了隨意推啦其實 01/29 08:42

推 timor: 原PO大神 01/30 10:07

推 kiwaygo: 原PO大神來支援一下 01/31 13:03

推 timor: 原PO大神 02/01 21:22

推 kwhmagic: 原PO大神化學營開始了其實 02/02 00:19

推 ROwater: 原PO大神陸老師是前台大交響優秀小提琴手 02/03 00:20

推 kwhmagic: 原PO大神樓上忘了加其實其實 02/04 01:29

推 Julibea: 原PO大神竟然在計中其實 02/05 03:49

推 ptt789789: 原PO大神在家太閑了其實 02/06 14:43

推 timor: 原PO大神在家清閒其實 02/08 22:23

推 CCSam: 原PO大神現在才看到這篇真可惜 02/09 00:13

推 joeliao: 原PO大神我崇拜你很久了XDDD 02/09 19:31

推 davidkid: 原po大神 02/09 22:59

推 kwhmagic: 原PO大神突然好多不認識的帳號冒出來喔＠＠ 02/09 23:08

→ kwhmagic: 原PO大神是原PO大神的高中同學嗎 02/09 23:08

推 samueldallas:原PO大神難道要製造Exam版第一爆嗎？Orz 02/09 23:35

推 Julibea: 原PO大神這是發生什麼事來著... 02/10 01:09

推 timor: 原PO大神感覺像是要製造Exam版第一爆~ 02/10 10:36

推 timor: 原PO大神化學系爆無所不在~ㄎㄎ 02/10 10:38

推 Julibea: 原PO大神因為太宅了嗎其實 02/10 10:58

推 kwhmagic: 原PO大神都是從原PO開始的啦...... 02/11 01:14

推 timor: 原PO大神 "那個人"嗎?= =" 02/11 10:25

推 kwhmagic: 原PO大神就是這個人 http://0rz.tw/b62CE 科科 02/11 16:09

推 Julibea: 原PO大神我就知道 02/11 21:25

推 timor: 原PO大神 ..................................... 02/12 16:18

推 kwhmagic: 原PO大神我就喜歡... >////< XDDDD 02/13 17:32

推 timor: 原PO大神 ...........................(完全無言) 02/13 20:11

※ 編輯: sssssisme 來自: 218.167.184.162 (02/14 15:54)

→ sssssisme:改一下錯字= = 02/14 15:54

推 samueldallas:原PO大神大神推文了！ 02/14 17:26

→ samueldallas:原PO大神為什麼不順便修修下面那一篇？ 02/14 17:26

推 Julibea: 原PO大神仍然有錯字其實不過好像不是重點。 02/14 23:42

推 timor: 原PO大神無妨 02/15 08:13