救我感恩您

Which is not an appropriate pair of analogy between mechanical and electrical quantities of the oscillating systems? (A) x➜ Q; (B) v ←➜1; (C) m← C; (D) F→ V; (E) None.

請問第四題如果選D的話合理嗎？覺得蠻通順的 謝謝!

II. 綜合測驗 With all the TED Talks available, how can you choose a good one to start with? TED.com offers several playlists that can introduce you to TED Talks. 1. playlist* features the 25 most-watched talks. Another, 2. "11 must-see TED Talks," aims to give an introduction to the wide range of topics covered. Still another has 3. of the very first talks to be uploaded. 4. , you might start with the one talk that is on all three lists: Sir Ken Robinson's "Do Schools Kill Creativity?" This talk 5. is from 2006, is about encouraging creativity in school. TED's most popular talk, it 6. more than 58 million times over the years. Talks also bed The 563.6 Talk. Eve miss one 1₁. online. T even if y If you still don't know 7. a talk, try TED.com's TED Recommends* system. Using jetoi sii ni sau tot jelewater at slytestil vibaori-pos nseil. some topics you find interesting. 9. with that this is very easy. All you have to do is 8. information, the system recommends a talk for you to watch and rate. After you watch that first 5021 (8) muntari A talk, a second is recommended based on your rating. 10. you watch and rate, the system learns your preferences* and can suggest more and more interesting talks for you. However you choose your first video, TED Talks can be so interesting that it probably won't be your last. 註*: playlist 播放清單;recommend 推薦;preference 偏好 註*:re 1. 6. (B) One coronal THC (C) Another (D) Other ( IV. 篇重 (B)1. ) 1. (A) Some s ohni T (B) known for (C) known as (D) known to (A) S (V) 2. (A) known by Say It (8) do (C) little SURMA) (D) a little st (B) a few B) 3. (A) few ( () 4. (A) In fact commemo (B) In other words (D) However 1 blowodi 10ei (C) Instead blow od si notlesinagio C (C) that (B), which (D), who (^) which bos HO(A) sl odi omr 978l odi Every videos all also launc follow the local focu (B) C in (C) T

1為什麼選C?

2622A (A) IF(B) Since (L') Though U!! MC (2)4 (3B 1410 (518 On the first day of school, we see a lot of students in school buildings. However, 16 7/65

G小題錯在哪⋯

Au equation of state relates the state v (g) True false The internal energy of an animal cell (system) can only be changed by the flow of heat (9) or work (w) across the boundary between the system and surroundings. (4 points). s'open system m True false: Find the incorrect conclusions from the following sentences and correct them. (20 points).

51題，解答九分之一那邊，為何是cot3x的三次方而不是一次方，為何是九分之一不是三分之一？

Finding an Indefinite Integral In Exercises 49–58, find the indefinite integral. Use a computer algebra system to confirm your result. 49. cot 2x dx 50. tan Soor foset X X sec4 4 4 dx 51. csc4 3x dx 52. cores X X cot? csc4 – dx 2 2

第三題為何是3啊⋯⋯ expansion那內能差不就是小於0嗎，

(3) Pushing the piston down so as to do work on the system 3 PV a (c)Multiple Choice: What is the correct result for reversible isobaric process in which an ideal gas undergoes an expansion form 1 L to 10 L in a closed system? BU-atw DHECPAT (3 points) Pv=nRT AU=croTo (1)w > 0, AU>0,q>0; (2)w >0, AU<0,q<0; (3)w<0,AU>0,q>0; (4)w <0, AU<0,q<0 个小 finat low of thermodynamics takes the

第一題 怎麼想

1.) True/false, multiple choice or short answer. “*” denotes more than one correct answers. (33 points) (a) Multiple Choice: I will have the largest energy transfer as expansion work from an ideal gas system 1o the surroundings if I use a process that is (3 points) (1) Isothermal and quick ;(2) adiabatic and quick ;( 3) isothermal and slow; (4) adiabatic and slow

求救第55題 完全看不懂他要我幹嘛

Year slenue Req) = 1932 1958 +1000 q R 9)=-1000q =74 1963 1968 COM If the price in dollars of a stereo system is given by 1000 p(q) + 1000, 1000 ² q where q represents the demand for the product, find the mar- ginal revenue when the demand is 10. 54. Profit Suppose that for the situation in Exercise 53 the cost in dollars of producing a stereo systems is given by C(q) = 0.2q2 + 69 + 50. Find the marginal profit when the demand is 10. 59. Marginal Product of Labor The output y of a manufacturing y process is a function of the size of the labor force n using the function 1990 +1000 1971 1974 = 990 197 197 19 19 1 y = kVn. The marginal product of labor, defined as dy/dn, measures the rate that output increases with the size of the labor force, and is a measure of labor productivity. (a) Show that (c) Using the a cubic f respond the rate and 200 (d) Discus descri part ( the y (e) Exp data calc ful x C(x) = 58. Money 1955-7 dy k dn an (b) How can you tell from your answer to part (a) that as the size of the labor force increases, the marginal product of labor gets smaller? This is a phenomenon known as the law of diminishing returns, discussed more in the next chapter. 56. Profit An analyst has found that a company's costs and rev- enues in dollars for a product are given by x2 C and R(x) 2x 2 5000' respectively, where x is the number of items produced. (a) Find the marginal cost function. (b) Find the marginal revenue function. (c) Using the fact that profit is the difference between revenue and costs, find the marginal profit function. (d) What value of x makes the marginal profit equal O? (e) Find the profit when the marginal profit is 0. (As we shall see in the next chapter, this process is used to find marimum profit.) A wher in bi find year (a) (C) (e) nad since

求大神解答🥺

(II) A word or phrase is missing in some of the sentences. Complete the text by selecting the best answer for each blank. (A) calculated (B) depositor (C) minimums (D) savings account (E) transfers (F) yield First National Bank Your money's best friend Watch your wealth grow with a First National Preferred (7) __. Preferred customers earn a variable 1.27% annual percentage (8)__ (effective 03/08/2010), double that of the national average (as (9) on 03/07/2010). Preferred customers also can expect the following: --No fees, no (10) ---your money stays your money so long as your account reflects a positive balance. --Free electronic bank (11) _-- Transferring money is free and easy with our extensive account-linking system. --FDIC insured--your deposits are FDIC-insured for up to $250,000 per (12) Question? Call 1-877-1ST-NATL to talk to one of our friendly agents.

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