空間向量 請問這題的選項該如何判斷？從B以下的都有點問題⋯⋯謝謝🙏

(註:外 空間向量 2 普 (2) a (3 a 證 C18 空間中有一四面體ABCD。假設AD 分別與AB 和AC垂直,請選出正確的! (多選) KA) DB · DC=DĀ? TAB · AC (B)若ZBAC 是直角,則ZBDC 是直角 (C)若ZBAC 是銳角,則ZBDC 是銳角 (D)若ZBAC 是鈍角,則ZBDC 是鈍角 (E)若AB<DA且AC<DA,則ZBDC 是銳角。 (B) AB. AC =0. (A) 5B 5C (DB-DA IL DC-DA)=0 = = (5a + AB I COA+AC) * DB. B C =0A² 16 Blibel so. = 15A I + DA A B cos BOU, + AB. DATAB. AC 707) Tbibl·loch B,C,D, 2KI AB · AC=AB · AD • (106學測) (4) \ {C) LBAC <90° 5B. DE DA > 2 DB DE DA - 30 試選出正確的選項。 . 9 2 -- 同上

求解第二題

9 IZ 甲 N. 乙 2. 王氏一家人到嘉義半天岩紫雲寺賞景,發現在觀音菩薩大佛像前地面的地磚處 沒有空隙,是由甲類正方形及乙類正n 邊形所铺成的,每個甲類(正方形)的 每一邊接一個乙類,如右圖所示: (1)乙類的正多邊形其一內角為多少度? 360-90=270 (2) n =?請寫出理由。 (1-2) 180 = 210-21 n SPEREN LA 1801-360=13th = 087 = SAS oxca.135° 45n=360 3. (1)找出用圖(a) (四邊相等)舖滿平面的方法。 H (2)找出用圖(b)的圖形(上面兩邊相等,下面兩邊相等)舖滿平面的 方法。 -A011 112) 8 不限,2 = 0) 一日, 01 () (1) SASOV 圖(a)、 DATA DO 圖(b) ON A. car NES 30

這題怎麼算？ 正確答案是d.

7. 0.00 The reaction A + B is first order in [A]. Consider the following data. What is the concentration (M) of [A] after 80.0 s? S Time (s) [A] (M) 0.0 0.20 5.0 0.14 10.0 0.10 15.0 0.071 20.0 0.040 a. 04.06 b. O 7.8 X 10^-2 c. O 5.00 X 10^-3 d. 4.06 X 10^-4 O 0.01 e.

21題 教教我QAQ

Section 11.3 Angular Momentum J-s behind rmv a he ur 265 = ? a ter 30. Example 11.1: A 58.1 Iw COMP string and whirled at 18. Express the units of angular momentum (a) using only the funda- momentum of magr mental units kilogram, meter, and second; (b) in a form involving the circular path. Fir newtons; (c) in a form involving joules. marw horizontal and (b) the 19. Use data from Appendix E to make an order-of-magnitude esti- 31. Example 11.2. A stai mate for the angular momentum of our Solar System about the Max 27 the end of its lifetime galactic center. mu = 17.293 of radius 4.96 X 10' 20. A gymnast of rotational inertia 63 kg•m? is tumbling head over heels dwarf of radius 4.21 with angular momentum 460 kg•m?/s. What's her angular speed? 17.99 acted on the core, fine A 660-g hoop 95 cm in diameter is rotating at 170 rpm about its 32. Example 11.2: Astro 22. A 1.3-th-diameter golf ball has mass 45 g and is spinning at central axis. What's its angular momentum? L: 1W=0-66*(0-95) x 140x277.10 km and determin core that collapsed to 3000 rpm. Treating the golf ball as a uniform solid sphere, what's ing with a period of 4 its angular momentum? 18-3 33. Example 11.2. The s 10-598 rpm With her arms outstre Section 11.4 Conservation of Angular Momentum tational inertia is 3.5 23. A potter's wheel with rotational inertia 6.20 kg•m? is spinning (Fig. 11.6b), her rot freely at 20.0 rpm. The potter drops a 2.50-kg lump of clay onto her final spin rate? L = 6 2 x 2-1 = 12-99~13 - 2x2 22 13= 60.48)" x 2.5 W W = 2 . X z W = 20x2T 60 ²2.1 ~ 1 12.574

第21題 到底要怎麼寫ಥ_ಥ

Section 11.3 Angular Momentum J-s behind rmv a he ur 265 = ? a ter 30. Example 11.1: A 58.1 Iw COMP string and whirled at 18. Express the units of angular momentum (a) using only the funda- momentum of magr mental units kilogram, meter, and second; (b) in a form involving the circular path. Fir newtons; (c) in a form involving joules. marw horizontal and (b) the 19. Use data from Appendix E to make an order-of-magnitude esti- 31. Example 11.2. A stai mate for the angular momentum of our Solar System about the Max 27 the end of its lifetime galactic center. mu = 17.293 of radius 4.96 X 10' 20. A gymnast of rotational inertia 63 kg•m? is tumbling head over heels dwarf of radius 4.21 with angular momentum 460 kg•m?/s. What's her angular speed? 17.99 acted on the core, fine A 660-g hoop 95 cm in diameter is rotating at 170 rpm about its 32. Example 11.2: Astro 22. A 1.3-th-diameter golf ball has mass 45 g and is spinning at central axis. What's its angular momentum? L: 1W=0-66*(0-95) x 140x277.10 km and determin core that collapsed to 3000 rpm. Treating the golf ball as a uniform solid sphere, what's ing with a period of 4 its angular momentum? 18-3 33. Example 11.2. The s 10-598 rpm With her arms outstre Section 11.4 Conservation of Angular Momentum tational inertia is 3.5 23. A potter's wheel with rotational inertia 6.20 kg•m? is spinning (Fig. 11.6b), her rot freely at 20.0 rpm. The potter drops a 2.50-kg lump of clay onto her final spin rate? L = 6 2 x 2-1 = 12-99~13 - 2x2 22 13= 60.48)" x 2.5 W W = 2 . X z W = 20x2T 60 ²2.1 ~ 1 12.574

請問這題是要一個一個列嗎？還是有辦法用算的？謝謝🙏

事事通 ||4d3az il=laz -az|+| az-az |= 2 Ola - az = 2 • la-(z=0 (ay, (2, az) = (1,3,3), (2,4,4)... (7,9,9) (2,0,0),(3,1,1)…(9,7,7),共15 個 214-azl=0;la - az = 2 (a, a, (z) = (1,1,3), (2,2,4)... (7,7,9) (2,2,0),(3,3,1)…(9,9,7),共15個 |4-a=1,log-a-1 (a,dy,03)=(1,2,3), (2,3,4)... (7,8,9) (2,1,0),(3,2,1)... (9,8,7) (1,2,1),(2,3,2). (8,9,8) (1,0,1), (2,1,2)…(9,8,9),共32 個 由123)可知共 62 個 4

向量 第二題啊啊啊啊啊啊

二、平面上有一五走形 B, B.B.B.B. 答各喜中差下: 4,25,20) Az (16.15). 4, (12.26) A(16.39] 4.( 26.37 )相對望望丁參考右軍。 (1) 為平面上任意書·事: datal an - am -08-08-08-08 OR (2)本出,全」。

幫我看一下這三題的答案，對不對？🙇‍♀️

Text 1 The United Nations (UN) recently Jaunched 17 sustainable goals, and declared "No Poverty" as the top goal to be achieved by 2030. Based on the information and statistical data, more than 10% of the world's population is living in extreme poverty, and struggling to fulfill even the most basic needs when it comes to health, education, and living standards. According to the UN, there are about 736 million people living in extreme poverty, and they live on less than $1.90 a day. On a worldwide scale, the poverty rate in rural areas is also more than three times higher than that in urban areas.

clc opengl('software') load HW9_Data x = data(:, 1); y = data(:, 2); y=y+0.01*randn(size(y)); % Artificial noise tic%開始計時 % --- %... 繼續閱讀

誰能給我算法，謝謝

U886 BLLZO.6! DLRURAL 356 8314 1238 46. 執行下列 Visual Basic 程式碼片段後,請問變數 data(1), num1, num2 的值依序是 多少? (A)1,5,6 (B)9, 7,9 (C)9,5,16 (D)3 , 7,16 Module Module 1 Sub Main 0 REM 程式由此開始執行 Dim data () As Integer={1,3,5,7,9} Dim numl, num2 As Integer numl=data. Length num2=data (4) num2=Processing(data, numl) End Sub Function Processing(ByRef data() As Integer, ByVal num1 As Integer) data(1)=data(1)^2 numl=data(3) Processing=(numl+data(1)) End Function End Module 47 56 Aru A.