求問這題怎麼解

練演2-3.將10克的銅片放入硝酸銀溶液中,等銅片表面附有一層金屬銀後取出, 洗淨、乾燥,然後稱得其重量為 12 克,則在銅片上析出的銀重量約為多少克? (原子量:Ag=108,Cu=63.5) (A)7.6 (B)4.8 (C)2.8 (D) 6.4。

想請問這題🙏，有點看不懂圖三的公式是從何而來，卡住了

EXAMPLE 21.11 FIELD OF A UNIFORMLY CHARGED DISK A nonconducting disk of radius R has a uniform positive surface charge density o. Find the electric field at a point along the axis of the disk a distance x from its center. Assume that x is positive. SOLUTION IDENTIFY and SET UP: Figure 21.25 shows the situation. We rep- resent the charge distribution as a collection of concentric rings of charge dQ. In Example 21.9 we obtained Eq. (21.8) for the field on the axis of a single uniformly charged ring, so all we need do here is integrate the contributions of our rings. EXECUTE: A typical ring has charge dQ, inner radius r, and outer radius r + dr. Its area is approximately equal to its width dr times its circumference 2πr, or dA = 2πr dr. The charge per unit area is σ = dQ/dA, so the charge of the ring is do = o da = 2πor dr. We use dQ in place of Q in Eq. (21.8), the expression for the field due to a ring that we found in Example 21.9, and replace the ring 21.25 Our sketch for this problem. Idr dQ X P dEx dEx radius a with r. Then the field component dEx at point P due to this ring is 1 2πσrx dr 4π€0 (x² + ²)3/2 SOLUTION Continued

求解，拜託🙏🏻

氯酸鉀(KCO3)加熱分解出KCI與O2 (1) 當取0.8 mol的KCIO,可產生O2多少mol? (2) 標準狀態下,產生3.36 L的O2,同時有多少克的KCI生成? 2KClO3 → 2KCl + 3O2 (9) 標準狀態 : 0°C, 1 atm ■ MW: KCl3 (122.5), KCI (74.5), O₂ (32)

為什麼此題答案為D

-8 範例7 設氯有二種同位素,分別爲C1,C1,且已知在自然界中,Cl佔 75 %, 37 Cl佔 25 %,試回答下列各問題: (1)在質譜儀中,Cl+2,Cl+,C咕離子可產生幾條譜線? (A)1條(B)3 條(C)5條(D)7 條(E)9 條。

求這2題詳解🙏🙏🙏

2. 3. (C)水深10 公尺處有一密閉 金屬球殼,半徑為 20 公分;其內 空氣為一大氣壓力.請問球表面 因內外壓力差異所受之力為:(A) 4926 N; (B) 9852 N; (C) 49260 N; (D) 98520 N. (A)同上題,若將球殼內部抽 真空,球表面因內外壓力差異所 受之力變為何?已知大氣壓力為 101325 N/m². (A) 100192 N; (B) 10020 N; (C) 202650N;(D)不變

請問這幾題是屬於sn1 sn2 e1 e2哪一個反應 希望能告訴我產物怎麼寫 謝謝

(2). (3). (4). CH₂CH₂ M.... CH 3 3 + CH3CH₂OH Sn1/E1 + CH3CH₂OH + CH3CH₂O-Na+ Snl

請問sp mixing是怎麼混成的

CH₂O H 0₂ H 10₁6-3p² TL TUP 2 O₁5-sp² H 2p 1/(↑) 23 Ide is It- 2P I >p² II II I IS IL

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