為什麼速度不變動能還是減少了，謝謝！

A jet airplane begins a trip at an altitude of 9000 m, traveling 200 m/s. One hour later in the flight, it travels at the same speed, but at an altitude of 4500 m. How was its kinetic energy changed? ©Cengage a. It was reduced to half. b. It was doubled. C. It was not changed. d. It would be slightly less. Slide 8-4

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

求解

Chrome 檔案 Sylves Scores M Gmail ▸YouTube | 地圖 Pearson eText Purchase Options Study Area User Settings Course Home Ghe binding energy of a two-par X + openvellum.ecollege.com/course.html?courseld=17667848&OpenVellumHMAC=9c8d5dd7baa0c70ec3a75db4e52f2d39#10001 Document Sharing Course Tools 檢視 歷史記錄 書籤 設定檔 分頁 視窗 說明 單 > 翻譯 The position of a 280 g object is given (in meters) by x = 5.1 t³ - 8.0 t²-44 t, where t is in seconds. https://session.masteringphysics.com/myct/itemView?assignment ProblemID=176946106 10月 13 Part A tv Determine the net rate of work done on this object at t = 2.0s. Express your answer using two significant figures. Pt 2.0s= = Submit Part B VAΣO Pt=4.18= = Request Answer Determine the net rate of work done on this object at t = 4.1s. Express your answer using two significant figures. VAE P Pearson ? 1999+ ? W Caright © 2022 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy. Permissions Contact Us | W G3 ✩ 10月13日 週四 上午 12:38 I Constants 更新

求解

Chrome 檔案 M Gmail 3 My Courses Course Home Syllabus Scores YouTube Pearson eText Study Area Purchase Options User Settings Course Home X Ghe binding energy of a two-par x + openvellum.ecollege.com/course.html?courseld=17667848&OpenVellumHMAC-9c8d5dd7baa0c70ec3a75db4e52f2d39#10001 Document Sharing Course Tools 單 檢視 歷史記錄 書籤 設定檔 分頁 視窗 說明 地圖 > 翻譯 <L.8 Problem 8.51 Part A W = Submit VAE Provide Feedback How much work would be required to move a satellite of mass m from a circular orbit of radius r₁= 2re about the Earth to another circular orbit of radius r2 = 3rE? (rE is the radius of the Earth.) Express your answer in terms of the variable m and constants rE, ME, and G. Request Answer https://session.masteringphysics.com/myct/itemView?assignment ProblemID=176946298 10月 13 tv ? 10月13日 週四 上午12:37 - 999+ ■ 8 of 10 更新: Constants Next >

求解

Chrome 檔案 M Gmail 3 My Courses 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 8.99 A satellite is in an elliptic orbit around the Earth. Its speed at the perigee A is 8526 m/s (Figure 1). Figure 16,460 km B 8230 km 8230 km 10月 13 A 1 of 1 14.255 km tv UB = Use conservation of energy to determine its speed at B. The radius of the Earth is 6380 km. Express your answer in meters per second. Submit Part B VC = VAΣ Submit Request Answer Use conservation of energy to determine the speed at the apogee C. Express your answer in meters per second. VAE Request Answer ? 1999+ m/s ? G m/s 10月13日 週四 上午12:37 ■ 10 of 10 Constants 更新

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 >

請問這題應該如何計算？

45 表觀 亂流 暫時切 45. 45./ An airplane encounters sudden turbulence, and you feel momen- tarily lighter. If your 'apparent weight seems to be about 75% of your normal weight, what are the magnitude and direction of the plane's acceleration? 大小 2.45 m/s², downward

熱力學第一定律，汽化熱的應用，請問該從哪裡解，謝謝🙏

2010 points) For ethanol, Avap Hm = 43.5 kJmol-¹. Treat ethanol(g) as a perfect gas, calculate q, w, AH and AU when 1.75 mol of ethanol(1) is vaporized at 260 K. DvapH"=43,5 kJ mol' n=1175 mol T= 260k

熱力學第一定律，請問如何比較？謝謝🙏

6. (5 points) Explain why the Cvm of H₂(g) at T = 60 K is IR (R is the gas constant) lower than the Cvm of H₂(g) at T = room temperature?

第四題求解

3. (5 points) What is the characteristic temperature of a rotational motion that has a wavenumber of 0.24 cm"¹? 4. (5 points) Is your body in thermal equilibrium with the environment? If yes, why? If not, what keeps you away from the thermodynamic equilibrium?