求題目C🙏

he Secant line PO jpo 全 slope of tangent line GZ+ 全 bs 二Instantaneous velocity i i $ which is the same as the average velocity over the time interval [lg,d 十 四. Therefore 7 e the velocity at time # 三 d (the limit of these average velocities as娘 approaches 0) must 7 [be equal to the slope of the tangent line at (the limit of the slopes of the secant lines). Examples 1 and 2 show that in order to Solve tangent and velocity problems we must be able to find limits. After Studying methods for computing limits in the next four sec- tions, we Will return to the problems of finding tangents and velocities in Chapter 2 FIGURE 4 kk 1.4 EXERCISES , 1. ,A tank holds 1000 liters of water, which drains from the (a) IPis the point (15, 250) on the graph of V, find the bottom of the tank in half an hour. The values in the table slopes of the secant lines PO when O is the point on the show the volume / of water in the tank (in liters) graph_ with 二5, 10, 20,25,and 30. (b) .Estimate the slope ofthe tangent line 午 吃by averaging after 7 minutes- the slopes of two secant lines. | fr(min) S$ 2 30 (c) Use agraph of the function to estimate the slope of the tangent line at P. (This slope Tepresents the rate at which | YOD 28 必 the Water is 1s siowing, from the tank after 15 minutes.)

大一普物 請問第10題要怎麼寫？ 尤其是(b)的角度表示我不太會

V 1 Vy A basketba]l player is 15 f horizontally from the center Of the basket, which is 10 了 of ffhe ground. At whatcangle should the player aim the ball from a height of 8.2 ft with a speed of 26 ft/s2 A diver leaves a 3-m board on atrajectory that takes her 2.5 m above the board and then into the wafter ~.8m horizontally from the end ofthe board. At whatspeedl and angle did she leave the board? (3) Show that the position of a particle on a circele_of radius AR With_its center at the origin 1s 品 (eos 你+sin 97 。Where @ is theangle the position vector makes with thex-axis. (b) Ifthe particle is 同 自 全 Inoves-with-constant' Speed y Starting on the x-axis at / 三0, find an expression for 9 interms oftime7 and the period 7/to complete a full circle. (c) Find the magnitude and direction of the acceleration. 訂上若

大一普物 請問第9題要怎麼寫

區9. 10. 一 六 余 條 監工 選hor A basketbal] player is 15 了 horizontally from the center Qf the basket, which is 10 ft off the ground. At whatangb should the player aim the ball from aheight of8.2 ft with a Speed of 26人/s? A diyer leaves a 3-m board on a trajectory that takes her 2.5 m above the board and then into the water 2.8m horizontally from the end ofthe board. At whatspeeil and angle did she leave the board? 半生 (3) Show 也at 了e position of a particle on a circle_ of radius AR With its center at the Orlgin 1S 7三[cos +sin9史, where 幻 is the angle the position vector makes with thex-axis. (b) IFthe partlcle Inoves With constant speed y Starting on 了he x-aXis at /三0, find an expression for 9 interms oftime / and the period 7to complete a full circle. (c) Find the magnitude and direction ofthe aeeeleration.

我看了答案還是不會算ಠ_ಠ

/97,/A ball is dropped from rest at a height 0o above the ground. At the same instant, a second ball 1s launched with speed uvo Stralght up from 崗e ground, at a point directly below where the other ball 1S dropped. (a) Find acondition on u0o Such that the two balls Will col- ide in mid-air. (b) Find an expression for the helght at Whieh they collde. 生 名 油1 ,

求第17題

人 14. Profit The profit 16. 人2/ 2 / Wcd/e Figure for 17 Figure for 18 18. 95 。Volume_AIl edgaes of a cube Pro hom selling x units Of a product ls glven by 2三 510N 0 atarate ot 9 units per dl the prottt when (am) 、 二 4 The sales are Jncreasing ay. Find the rate Of change Of 00 units and (bD)文三 600 unjts, qre expanding at a rate How fast is the volume changing when each edge is (a) 2 centimeters and (b) 10 centimeters? ot 6 centimeters per second, Surface Area_AI edges ofacube are expanding at a Tate of 6 centimeters Per Second. How fast is the surface area changing when each edge is (a) 2 centimeters and (b) 10 centimeters? 。 Boating_A boat is pulled by a winch on a dock, and te winch is 3 meters above the deck of the boat (See figure). The winch pulls_the Tope at arate of 1 meter per second. Find thexspeed 6fthe boat when 5 meters 9t Tope 1S out. What happens to the Speed of the boat as it gets closer and closer to the dock? Shadow Length “Aman 2meters tall walks at arate 0f ].5 meters per second away from a light that is 5 meters aboye the ground (see figure). | (a) When he js 3 meters from the base of the light, at 人 和 生0) what rate js the tip of his shadow moving。 (b) When he js 3 meters from the base of the at what rate js the Jength of his shadow changlng。 Air Traffic_Control An airplane flying at an altitude Of 10 kilometers pasSes directly over aradar 蟬戰品 品 figure). When the airplane is 26 kilometerS away ($ 三 26), 由 卅0 ee 21, 22 23 24 12 店

請問這題b跟c怎麼算

9.49 Answer the following for the reaction: 十 2KCl(22) 一> PbCl(9) 區 2KNO3(gg) 2 箱O03 many grams of PbClp will be formed from 50.0 mL of al1.530 MKClsolution? 紡 How many milliliters of a 2.00 M Pb(NO3)2 solution will Teact Wwlfh 50.0 mL ofa 1.50 MKCl solution? Cc。 What IS 也e molarity of 20.0 mL ofaKClsolution that Teacts completely With 30.0 mL of a 0.400 MPb(NO3) SOlutlon?

求61.的（c)

sS. | ) Vs # 到 raphing utilty 60, USe 9 xercis65 員 讓品 [-4 4 Does tfe the ! tinuous on this Writing tion On be con the func MOBI2主 關 to graph 大 appea 1 continuous on [一4, 4p2 gaph 9 he function ! ut the importance qf ya人 nterval? 和 paragr pP 時 8 graphically. Write as function ana! tically a examining a 過 巡十2 9他4 0 1 2 還 2 00 2時號 院 外4 2 Si 6 Environmental Cost_The cost CCn millions Qt 同 dollars) ofremovIng percent 0K ffhe pollutants emitted from the smokestack Of a factory Can be modeled by 2 € 人0 优渦90) (3) What is the implied domain of C? Explaltn your TeasOning, 能(5) Use agraphing utility to graph the cost tunction. 說 the function continuous on its domain? EXxplain your reasonlng, t 卻 (@) 上nmd the cost 0f Temoving 7為% of the pollutants 生om the smokestack,

一直算都錯😖，求解

Problem: relative to 丸 Is om always smaller than zz, larger than we orthe same Ph as uu, or does it have sorme other shed k 中 Telationship? COTn- TeaS,。 (4 Lisa rushes down onto a subway 7? 1the Platform to find her train already 主 leparting. She stops and watches b the cars go by. Fach car is 8.60 m ( 語 long. The first moves past her in 站 1.50 sand the second in 1.10 5. 實 Find the constant acceleratlion Of 時 則 thetralin. With )eSlt CHALLENGE PROBLEMS np lt hes is 42. Two thin rods are fastened to ~e on the inside of a cCircular TIng as shown in Figure P2.42. One rod of length Dis vertical, and 17th the other of lenoth 了 makes an

1.7 不懂為什麼不是description statistics 是因為後面的change 有經過計算嗎

說 a.。 Opservationaj Study p. Designed experiment 1.6 Fi im the following blank: veal only asSociatior 3 : 1, Whereas 1 : aS de sd experiments can help ee de Signed experimenmt Ca k Observational Studies can Te- Applying the Concepts and skills 7y? 乜AVe7ce7'yec'y 了有 C/qQsSz7 cogce7 5 。 707 7 5/7/cs 5 27儿er Zesc77- ZUe O7 7727e7e72777. 二\ 了 7 yozr yye7s, 人執 4 ata from a sample of Americans ylelded te following &Stimates of average TV Viewing time per month for 引! Americans 2years old and older. The times are in hours and minutes; Q1 stands for first quarter. [SOURCE: 7/iz Cyoss-7P7d//o7gj 和ez2oz7z, Quarter 1, 2011. Published by The Nielsen Company, 1.7 TV Yiewing Times, @ 2011. _Tmferemti A 一cc二 生玖 AA二和多吃ttOCG Yiewing method Q12011|Q12010|Change (%) Watching TV in the home 說3 Watching timeshifted TV 1人 DVR plJayback 各 Using 了e Internet on a CoInputer 一1.4 Watching video on the Jnternet 34.5 Mobile subscribers watching 20.0 Video on amobile phone ].8 Professional Athlete Salaries. From the Sfgfsfcd/ Asfrdc/ 9 加8 EE 乃e Cuzreg Sogfes and the article “Average Salarles lm the NBA,N Ibutor 人 i blished on the Yahoo! Contm: MJPB and NHL by J 、Do is 和 還 1.10 drui 六/r yea ent av:

只有氧是不規則的命名嗎？ Tetroxide vs tetraoxide Pentoxide vs pentaoxide PCl5 後面Cl 就是 pentachloride

6 机 BLE 2.6 | Prefixes Used to Indicate Number im Chemical Names U選4 7)o7o- g- 7二 Numberindicated 1 7efrg- 2e77o- Agexog- 7epfg- Ocfg- 7o7g- 選和os和 eu |,, decg- INTERACTIVE EXAMPLE 2.8 SOLUTION JPHABnEB 呈_Atomsg, Miolecules, and Ins consider the names ot the s will no To see how these Tules apply, 沿 同 lent compounds formed by nitrfgg 時 as tematic Name 了 同 loxi Nitrous oX1ce de 。 imitrogen InonoX1 1 9 ii monoxide NI 時 4 NO Nitrogen N os Dinitrogen TioX1 同 Noo, Dinitrogen tetIOX1 Noo Dinitrogen pentoxi 2 avoid awkward pron that to hen the element beglns Wtt 7oO/ dinitrogen tetrdox ng examples fthe prefiX trogen tetroxide, tt their common names- esystematic names to Notice from the precedi often drop the final ? % 20 example, N204 1S called dinlt called carbon monoxide, 7 carbo Some compounds are always Te are water, ammonia, and hydrogen pe H2O2 are never used. n monoox1l ferred to by roxide- Th Naming Type 山 Binary Compounds 1. Name each of the following compounds: a. ,PCD DBGIG MS 09 2. From the following systematic nameS, Write the formula for ea a.。 Sulfur hexafluoride b. Sulfur trioxide c.。 Carbon dioxide 1 Formula Name a. PCl Phosphorus pentdehloride Be Phosphorus trichloride c. SO2 Sulfur dioxide 2. Name Formula a.。 Sulfur hexafluoride SFe b.。 Sulfur trioxide SO ce. Carbon dioxide CO