第二小題這樣寫對吧？

(1) Please write down the energy balance equations (2) The initial state of an ideal gas mixture was 500K, and 30 bars. Next, the temperature was reduced to 300K. Assume that the mole fraction of A was 40%, Please calculate the partial pressure of species A in the mixture at its final state. (2%) (3) Please describe Carnot's Theorem and the Third law of Thermodynamics and. (2%) (4) Please describe the differences between ideal gas and real gas (2%) (5) In Van der Waals equation of state, please describe the meaning of parameter "a" and "b" 100

想請問這四題

98. A baseball is hit straight up and is caught by the catcher 2.0 s later. The maximum height of the ball during this interval is: 4.9 m 2÷2=1 XA) B) C) D) E) 7.4 m 19.4 m 38.8 m 19.6 m 122. DA If the x component of a vector A, in the xy plane, is half as large as the magnitude of the vector, the tangent of the angle between the vector and the x axis is: A) √3 B) 1/2 C) √3/2 3/2 D) E) 3 142. Two vectors lie with their tails at the same point. When the angle between them is increased by 20° the magnitude of their vector product doubles. The original angle between them was about: A - B = |A|| B|cos O 2 L² cose = L² cos (0+20²) 2005 = cos@casso. sing sino A) 0 B) 18° C) 25° D) 45° E) 90° BA 158. Identical guns fire identical bullets horizontally at the same speed from the same height above level planes, one on the Earth and one on the Moon. Which of the following three statements is/are true? A) III only B) I and II only - 0-9 cose-adsint I. The horizontal distance traveled by the bullet is greater for the Moon. II. The flight time is less for the bullet on the Earth. III. The velocities of the bullets at impact are the same. I and III only II and III only 1.1 cos@=-035n9. tant = 1/3 C) D) E) I, II, III h-Vortat² xoxt-txt tu-Jite

第四題，求解釋

4. 5. 6. (CH₂COOH-C What is the hybridization state of the central N atom in the azide ion, N3? (Arrangement of atoms: NNN) [N=N-N] [N=N=N]; N= SP What type of hybrid orbitals used by the central atom in PC13 and CC14. 10010 ALCALINCA Which one of the following statements about orbital hybridization is incorrect? -U-I

請問時間算是interval data 嗎？謝謝

求救

Chrome 檔案 M Gmail Course Home Syllabus Scores YouTube Pearson eText Study Area Purchase Options Course Home User Settings Document Sharing Course Tools 單 openvellum.ecollege.com/course.html?courseld=17667848&OpenVellumHMAC=9c8d5dd7baa0c70ec3a75db4e52f2d39# 10001 檢視 歷史記錄 書籤 設定檔 分頁 視窗 說明 地圖 > 翻譯 X Ghe binding energy of a two-par x + <L.8 Problem 8.75 The binding energy of a two-particle system is defined as the energy required to separate the two particles from their state of lowest energy to r= ∞o. The potential energy of the two atoms in a diatomic (two-atom) molecule can be written b U(r) = − 6 +12, where r is the distance between the two atoms and a and b are positive constants. 10月 13 Part A Determine the binding energy for this molecule. Express your answer in terms of the variables a and b. Ebind= Submit Provide Feedback VAEO tv JA xa Xb b √x x x X Incorrect; Try Again; 3 attempts remaining Previous Answers Request Answer 1999+ C |X| ? X.10n 10月13日 週四 上午12:33 I 9 of 10 Constants 更新 Next >

想請問第二小題物理，謝謝大家🙏

Yo <t. 由平面運動斜拋理論所計算的答案與實際數據不相符的原因,你認為可能有哪些? (服加速度以9.8 m/s² 計,1 m = 3.28 ft) 022-3个 空氣阻力etc 2. 電腦模擬的運動軌跡 在現代的科學研究中,實驗、理論解析、電腦模擬相輔相成,讓我 們得以瞭解更多自然的現象與規律。因此除了解析推導外,也可以 運用簡單的程式,來計算物體運動的軌跡。由於物體受力大多僅與 其位置有關,我們可以藉由以下的運算法,來計算物體運動的軌 跡: y(m) 1.0F 0.8 0.6 23 0.4 0.2 10-60°° 由物體的初始位置,已知所受外力,進而求出該時刻的加速度。 ②利用求得的加速度,可由物體的初始速度,算出下一瞬間的速度。 3 藉由算出的速度,可由起始位置,算出下一瞬間的位置。 ④重複以上的計算步驟,即可求出物體運動的軌跡。 撰寫電腦程式計算時,我們無法取無限小的時距,因此嚴格來說,數值計算得到的是近似的軌跡 點。但只要時距取得夠短,這些軌跡點就會趨近正確的解答。如上圖所示,物體以相同初始速率作斜 拋運動,當拋射角度為 30° 與 60° 時,雖然運動的軌跡不同,但其水平射程相同。此結果與解析推導 相同,可以互為佐證,但許多實際的問題並沒有解析解,若能善用電腦程式計算,就能提供另一種理 解的管道,是非常強大有用的工具。 【混合題】 (1) 分析拋射角度為 60° 的軌跡時,會注意到軌跡點在頂點處較密,而在起始位置或落地處較疏。但若 分析拋射角度為30° 的軌跡時,其軌跡點則較為均勻。針對軌跡點的疏密變化,以下哪些為合理 的推論?(多選) (A)物體在頂點處的速率最小(B)物體在起始位置或落地處的水平速度較小 (C)物體在頂點處的水平速度較小(D)拋出至最高點期間,拋射角度大時,物體的速率變化較大,故 軌跡點疏密變化也較大(E)抛射角度小時,重力加速度較小,故軌跡點較為均勻。 0=30° 0 10.5 1.0 1.5 2.0 (m) (2) 進行電腦程式計算時,每一軌跡點的時距皆相等。若拋射角度為 30°時,其飛行時間為 10.0 s,試 由分析上圖中的軌跡點,估算拋射角度為 60°時的飛行時間為何? 17.55 +ZON 88 STATIONERY CORP LIBERTY

求解

nogetheg xog 17. 一農夫想用 60公尺長的竹籬圍出一長方菜圃,並在其中一邊正中央留著寬2公尺的出入口,如右 圖示。此農夫所能圍成的最大面積為 256 平方公尺 289 平方公尺 zxy 工 Z -X-2 2公尺 64 6 9 21x14248 = A + MY 2 STATY 64 y x+y Z 2x+2y 时 32 32 64 64 2x+2y 32 32 64 2 1024 乙 2 Paxy 1024 ( 红网

請問第九題： 隨著人口越多，情況只會越來越糟。____ ，我們必須做出某些大改變。 空格答案是換句話說，想問這裡用理論上為什麼不可以？

44 Lesson Four B65. (6. (A) reaction (A) 7. (A) into (B) 8. (A) dies (2) 9. (A) In theory (10. (A) fought ) 5. (A) keeping a; eye (B) taking a; toll (B) composer (B) from (B) dying (B) In vain (B) fighting (D) carrying; through (D) switch (D) with (D) die (C) In the beginning (D) In other words (D) fights (C) fight (C) having; at heart (C) scale (C) upon (C) died ※第三篇 In December 2020, members of Singapore's private 1880 club likely noticed a new item on club restaurant's menu. Specifically, the restaurant became the first place in the world to offer 1 meat. The meat itself was developed in a 2. by a start-up based in San Francisco called Eat J Josh Tetrick, one of Eat Just's founders, expressed great praise 3. Singapore for its careful efficient process for approving cultured meat for sale. Tetrick has made public remarks about how promotion of cultured meat could, in the long run, help 4. the fight against climate cha However, some scientists doubt 5. this is the case. REDMI NOTE 8 PRO TAI QUAD CAMERA formed in Finland found that for some types of meat, such as beef and lamb. cultured form indeed had a far lower impact 6. the environment. Howeyer for oth

想問3-9的a跟c

Problems 3-1. Explain the difference between *(a) random and systematic error. (b) constant and proportional error. *(c) absolute and relative error. (d) mean and median. *3-2. Suggest two sources of systematic error and two sources of random error in measuring the length of a 3-m table with a 1-m metal rule. 3-3. Name three types of systematic errors. *3-4. Describe at least three systematic errors that might occur while weighing a solid on an analytical balance. *3-5. Describe at least three ways in which a systematic error might occur while using a pipet to transfer a known volume of liquid. 3-6. Describe how systematic method errors may be detected. *3-7. What kind of systematic errors are detected by varying the sample size? 3-8. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is (a) 500 mg. (b) 250 mg. V(c) 125 mg. (d) 60 mg. 3-9. The method described in Problem 3-8 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative érror resulting from a 0.4-mg loss is not to exceed *(a) -0.1%? (b) -0.4%? (c) -0.8%? (d) - 1.1%? 3-10. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the error if the total volume of titrant is percent relative (a) 50.00 mL. (c) 25.0 mL. 3-11. A loss of 0.4 mg of Zn occurs in the course of an percent relative analysis for that element. Calculate the error due to this loss if the mass of Zn in the sample is *(b) 10.0 mL. (d) 30.0 mL. 190 (c) 188 (d) 4.52 x 103 4.63 x 103 4.53 x 10 ³ √6 *(a) 30 mg. (b) 100 mg. *(c) 300 mg. (d) 500 mg. 3-12. Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the sets, and find the mean devi- Vation for each set. Use a spreadsheet if it is convenient. *(a) 0.0110 0.0105 (b) 24.53 0.0104 24.68 24.81 24.77 39.61 862 (f) 850 MA 3-13. Challenge Problem: Richards and W the molar mass of lithium and colle data. 24.73 Experiment 1 2 3 4 5 6 194 447 X 10 7 448 X 107 4.58 X 10 (a) Find the mean molar t workers. (b) Find the median molar ma (c) Assuming that the cam molar mass of lithium is the absolute ertor and of the mean value demi Willard. (d) Find in the chemical ues for the molar mus since 1910, and ag a table or spreadshera 1817 given in the a Richards and Willd. Com mass versus year to la of lithium has chang Suggest possible abruptly about 18 ant de (e) The incredibly deals Richards and W that major changes will occur. Disc calculation in pat (f) What factors ha since 1910? (g) How would you mass? 6See Chapter 2 of Applications of Microsoft Excel in Analytical Chemistry, 4th ed., for information about statistical 7T. W. Richards and H. H. Willard, J. Am. Chem. Soc., 1910, 32, 4, DOI: 10.1021/ja01919a002. built-in statistical functions. "Answers are provided at the end of the book for questions and problems marked with an asterisk The I of ₂ or inc rce of able vas error c often in individu ate resul data in rtainties. dimensio andom e analysts The result

經濟學 請問有人可以教教我嗎ಥ_ಥ

7. In 2010, Americans smoked 315 billion cigarettes, or 15.75 billion packs of cigarettes. The average retail price (including taxes) was about $5.00 per pack. Statistical studies have shown that the price elasticity of demand is -0.4, and the price elasticity of supply is 0.5. a. Using this information, derive linear demand and supply curves for the cigarette market. b. In 1998, Americans smoked 23.5 billion packs cigarettes, and the retail price was about $2.00 per pack. The decline in cigarette consumption from 1998 to 2010 was due in part to greater public awareness of the health hazards from smoking, but was also due in part to the increase in price. Suppose that the entire decline was due to the increase in price. What could you deduce from that about the price elasticity of demand?