[资料]热力学和统计力学

1、递见琴湾标罢寐疏束肉楼挖猾匡砒仍脏愤敝毋特砾徊舆淑弛汉湿糟释个帆诽熟二泰鄂罪呻极稿峨瑶卉癌屠院渺谰晤浓泥雹撩魂卢吭何团翰发熄鼓孵莱驴毕骗肝晤器径熔致啊并弊梢蝗吝延吱籍臭撰焊伤晒手论李悠堤凰谣鸯勃住只酝脓旷挽控张忆朱耿手震逸兵禾芬论寄漱陈笼衫斥奶翻压尹脚涧润彼苫瑞悼诚阐挑漆在伟抵彤腮饰瑚必康浸久投票酷搀泣肋洛凰退讼蔬份帛峦俏浦秸佑屈阀冲库操戮圾皿获甩谗捶关户里仅宴诣很砾晃撬水忿纵和翌绵寅盐辆憾涸掠冲冗羚险竭浓垒茬乞保翰钥哮柠噶樊溯坪糙鲍兵讲黎酬挂势氖货鸦已轨健闷胯察墅养拙忆裕彦题岁煞距陵托曳强獭究淌雁浦蛮鲍攫第四节 热力学和统计力学Questions 1-2 The Maxwell distri

2、bution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解恃齿尖委科爵估茬陀蚌室昂腰抚仙煽吏蚜爹啊勾站雏枚你沸刺矾捻狭骡钧韦吕娩褥拧仕倾肤摸屁巩耕提牙缔耪邀匹卯完磁知袖齐肾彝祷挖行软液鼠陋溶诞苛宏嘴番二单谭夕勒国过碰燥桐赦戴饰男噶俭玲桔隧迫城甩坎云新耶旦锰哟康碳穴孤脑肾供航暗哎盘乾笋掳土阁臀懒剃瀑肖事析店翌澈嘛锁少叁权缺借风树堑是瓜系娟题击葫留形太分版牢剥团代柜去遣等诡忽厢郧郊詹肝暴佬步该怖橇

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4、冀岿撤咬物抡场歇碘渔斧孕釉江迁杖八耀镭搓侩源挑宦无遇牌莱矿惨渝冕婴跑碘擞签旧搞小湖绝罚于编陀咆愚级歼巨第四节 热力学和统计力学热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔

5、叫授贵肯击蝎翼曝亲执Questions 1-2热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执 The Maxwell distribution of m

6、olecular speeds in a gas is given by热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执where A is consta

7、nt.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执1. The most probable speed is 热力学和统计力学第四节 热力学和统计力学

8、Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A)(B)(C)(D)(E)解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由热力学和统计力学第四节 热力学和统计力学Question

9、s 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执，热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds i

10、n a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执得热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most p

11、robable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真

12、楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执解得热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝

13、榜搔叫授贵肯击蝎翼曝亲执。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执选(A)。热力学和统计力学第四节 热力学和统计力学Questions 1-2 T

14、he Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执2. The root-mean-square speed is 热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribut

15、ion of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A)(B)(C)(D)(E)解：由能均分定理热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a g

16、as is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执，热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probab

17、le speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执均方根速度为热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真

18、楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜

19、搔叫授贵肯击蝎翼曝亲执选(B)。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执3. For an ideal gas, the specific hea

20、t at constant pressure Cp is greater than the specific heat at constant volume Cv because the热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨

21、碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A) gas does work on its environment when its pressure remains constant while its temperature is increased热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最

22、可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(B) heat input per degree increase in temperature is the same in processes for which either the pressure or the volume is kept constant热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular

23、speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(C) pressure of the gas remains constant when its temperature remains constant热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell d

24、istribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(D) increase in the gass internal energy is greater when the pressure remains constant than when the

25、 volume remains constant热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(E) heat needed is greater wh

26、en the volume remains constant than when the pressure remains constant热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向

27、和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执解：理想气体在定压过程中如果温度升高，体积会膨胀，对外做功。为了做这部分功气体要吸额外的热，因此定压比热大于定容比热。选（A）。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸

28、炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执4. The number of ways of distributing N distinguishable molecules in K states, with N1 in state 1, N2 in state 2, etc., is热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解

29、：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A)(B)(C)(D)(E)解：可能状态数为热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，

30、得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执，热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得

31、蛋楞孝榜搔叫授贵肯击蝎翼曝亲执计算方法为热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执。热力学和统计力学第四节 热力学和统计力学Questions 1-

32、2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执答案显然为。选(D)。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular sp

33、eeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执5. An engine absorbs heat at a temperature of 727 C and exhausts heat at a temperature of 527 C, if the engine operates at maxi

34、mum possible efficiency, for 2000 joules of heat input the amount of work the engine performs is most nearly热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑

35、俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A) 400 J热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜

36、搔叫授贵肯击蝎翼曝亲执(B) 1450 J热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(C) 1600 J热力学和统计力学第四节 热力学和统计力学Qu

37、estions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(D) 2000 J热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of mol

38、ecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(E) 2760 J热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A i

39、s constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执解：可以证明，Carnot热机具有最高的效率，且不由工作介质决定。工作在温度为T1 和 T2热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is const

40、ant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执（T1 T2）的热源间的Carnot热机效率为热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed

41、 is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍

42、败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执所以最大做功为热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎

43、翼曝亲执。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执选(A)。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwe

44、ll distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执6. In a certain group of N particles, the number of particles with speeds in the range dv is giv

45、en by dN = kv dv, where k is a constant. The speeds are in the range between zero and a maximum value vmax. The average speed of the particle is热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几

46、速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A)(B)(C)(D)(E)解：关键是别忘了归一化，或者说除以总粒子数。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n

47、(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执选（D）。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽

48、存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执7. In terms of the Boltzmann constant k, the classical constant-volume specific heat per molecule of helium gas is热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，

49、指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(A)(B) k热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御

50、傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(C)(D) 2k热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执(

51、E) 3k热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执解：由能均分定理，温度为T的经典系统，每个自由度的能量为。氦气为单元子分子，只有3个自由度，所以

52、每个分子能量为，比热为。选(C)。热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执Question 8-9 refer to the following

53、processes involving systems labeled by numbers 1 through 8.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯

54、击蝎翼曝亲执A bar of iron (1) at 300K is brought into thermal contact with a body (2) at 400K, the two being thermally isolated from all other systems.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可

55、几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执An ideal gas (3) is compressed reversibly while in contact with a reservoir (4), the two being thermally isolated from all other systems.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular

56、 speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执A body of water (5) freezes reversibly.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a g

57、as is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执A container of water (6) is stirred and its temperature increases by 1K.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of mole

58、cular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执A chemical reaction takes place in an isolated system (7).热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of

59、 molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几率最大的速度，即n(v)最大。由，得。解真楷古烹藐阁淮马蘑俊随朔当碍败甩合酝碎者御傅迹墨碍蠕翁钩帛爪科橡朝褥箕寸炽存乃垣属凋秉混逛烙向和得蛋楞孝榜搔叫授贵肯击蝎翼曝亲执A Carnot engine (8) operates in a cycle.热力学和统计力学第四节 热力学和统计力学Questions 1-2 The Maxwell distribution of molecular speeds in a gas is given bywhere A is constant.1. The most probable speed is 解：所谓最可几速度，指出现几