急 這兩題

the gi The woman who is wearing a pink T-shirt is Ann. came We'r F. Make sentences. 仿例句合併句子。16%(每句4分) meet Your Example Sally The girl is Emily. / The girl has black hair. The girl who has black hair is Emily. The girl with black hair is Emily. ( ( I've visited the castles. / The castles stand on the hill. (2)( 4)( The man is my neighbor. / The man is wearing a hat. nit 5

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

（使役動詞）have+受詞後面是否可加形容詞呢？ For example：had the list ready

89題 謝謝

18 = volume increasing at this is 39. Bone mass In Example 1.1.6 we found an expression for the mass m of a human femur of length L in terms of the outer radius r, the inner radius rin, and their ratio k = lin/r. More generally, if the bone density is p, measured in g/cm°, then bone mass is given by the equation trạL[p - (0 - 1)k?] - - m = It may happen that both p and k change with age, t. P (a) If p changes during aging, find an expression for the rate of change of m with respect to t. (b) If k changes during aging, find an expression for the rate of change of m with respect to t.

求解第45題，後面鉛筆寫的是答案，感謝🙏

Demand In Exercises 43-46, find the rate of change of x with respect to p. See Example 6. 43. P = 2 0.00001.x3 + 0.1x' x > 0 4 = P x = 0 44. p = 0.000001x2 + 0.05x + 1 ' - 4XP X 15 ) 200 2x 0 < x < 200 p = >p²+1 - X 46. p = 500 2x 0 < x < 500 = 2

不知道這題要怎麼計算..求解了謝謝

EXAMPLE 2.8 w Calculate the attractive force between a pair of Ba2+ and S2- ions that just touch each other. Assume the ionic radius of the Ba2+ ion to be 0.143 nm and that of the S2-ion to be 0.174 nm.

不太清楚B為什麼錯

t DA (77-7) the IBGE + tk . Jt4u. 代名詞受格(落),由若望 ) 15. One of are (A) the coffee is too expensive (B) the student is sick (C) the teachers are nice D them wants to be a lawyer 題組: (16.~41.題) (16. ~ 18. ) Everyone wants to be a good learner. But do you know how to make it? Here a some tips for becoming a good learner. First, make a study plan before 16. _ . Ito help you use time well. It shows what you need to do and how much free time you h Second, get into some good study habits. For example, be sure to 17. the lesson every day. And, mark important points when you study and try to remember them Most important of all, you need to ask questions when you don't understand somet

請問第21跟23題怎麼算？

erlei 35 Range + 10. x - xy + y + 1 = U x 2 3 4 x + 3 3 2 + Finding the Domain and Range of a Function In Exercises 17-24, find the domain and range of the function. Use a graphing utility to verify your results. See Example 2. - . r = bylo No = > - = - X 1 = - X 1 2 - = = -1 – > 18. f(x) = 5x3 + 6x2 – 1 17. f(x) = - x2 – 2x + 3 lxl Domain: (0o,0) 0 (0,00) 19. f(x) = 20. f(x) Ranga : y=-/or Zo: 1 X – 9 (x - 5, x 20 V 21. f(x) = 3x + 2, x < 0 22. f(x) = (3x – 5, x < 0 2 - x, x 20 23. f(x) = X – 2 x2 x + 4 Domain : (-00,oo 1 Domain :(to ,-4) U(-4,00) Rango: (+60, 120 (1,00) = = 24. f(x) x4 V x Range: (-os, as)

有人會寫嗎謝謝

3 : WNI (16-25 H 10 ) Lesson 3 89 10 20 What happened to him? Eric: Really? 17. he never came to any of our activities. How could he do that? Erie: Mike didn't come to my birthday party last weekend, and he missed the picnic yesterday, too. Ben: He is doing okay... In fact, I just saw him yesterday. 16. Ben: He was practicing basketball with his team on the basketball court. Eric: Oh, I know it! Ben: Well, basketball means a lot to him. Eric: I sometimes even get angry at him because he doesn't treat me as a true friend. Ben: But Mike finally 19. him. Eric: Yeah. You are right. I just miss the good old days when we played together and shared everything with 20、 Ben: I know, I miss the good old days, too. 18. his favorite thing in life. He is a really great player, and we should be Dangry 生氣的 should be ( ) 16. (A) When was that? (C) What was he doing then? ) 17. (A) After he joined the team (C) After you saw him ) 18. (A) looked for (B) was looking for ) 19. (A) happy of (B) proud of ) 20. (A) each other (B) every each (B) Did you see him in the park? (D) Who was with you then? (B) Before he started to play (D) Before we played together (C) was finding (D) found (C) happy on (D) proud on (C) others (D) each one 1~22 Hi Karen, I'm sorry about stopping you when you were studying for the English test yesterday afternoon. dn't mean to do that, and I'm really sorry. As you told me before, you always have a hard time remembering new words. So, I also want are some good ways with you. After I learn a new word in class, I don't spell it out again and ag remember it. First of all, I like to make small word cards. I write a new word on one side and th aning of it on the back side. Then I can study those words everywhere even when I just have a . For example, I enjoy reading through the cards when I am waiting for the school bus. I also arf the Internet to look for songs with the new words in it. Last week, we just learned the word ? And I found the song Treat Myself. It's an interesting and nice song. I often sing the song also learn other words from the song. hope these ways also work for you, and maybe we can study together next time. ☺ - remember 19 spell ## meaninge everywhere a bit 5