求解😓

| 2 選 webwork / 1091math1203_06 / practice2 / 9 practice2: Prohphlem 9 0 EXEPC 1 全 (if point6) Find the limit by interpreting lm 一一一一 as an appropriate deriVatiV。 文一0 exp(2y) 一1 Jm 加也 三 文一0 宮 Preview My Answers 中9 衝間條 You have attempted this problem 01times. You have 5 attempts remaining.

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

請問句末的reservoir effect是儲庫效應嗎？（Fig1） 是的話，請幫我繼續解答🙏 有一個含萃取物凝膠，塗抹在皮膚上，滲透係數Kp 較低，但是滯留時間Lag time很長，所以文章解釋為reservoir effect儲庫效應，我看了一下參考文獻(fig2)，但... 繼續閱讀

The HPLC analysis ofthe last samples colleceted in the permeation assays allowed to caleulate the percentage ofbioactive compounds that permeated through the biologieal barrier after 24 hours as well as their permeation fluxes, expressed as hg em? hi (Table 3). Asp-eoumarie acid and caffeic acid are slightly lipophilic, iis possible that, even 放 they did not manage to pass the s/rgjo corjezo, they were trapped in the human membrane, happening whatitis called “Teservoir effee 六

求解 謝謝

了 」 1-10. A particle moves in aplane elliptical orbit described by the positlon vector f 三 22sin 0 十 2cos 0可 (a) Find y, a, and the particle speed. (b) What is the angle between vand aattime 三 也/20?

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:

求解圖裡UICK quiz的第二小題

acit0r 1taneOuls CUrTent Differentiating Equation 27.22 with respectto time gives the inst: as afunction of time: 4 tt號 一Fe ptasafurc 主二 where Q;/有CC 三方 is the initial current. Figure 27.15b 5 in the resistor that we guessedin order to-apply Kirch Equations 27.15 and 27.21. Equation 27.23 shows that the ci ing capacitor is negative, indicating that the current 1s Figure 27.15c. Both the charge on the capacitor and the ct tially at a rate characterized by the time'constant7了三用C. 人 i 一 GOuicK ouiz 27.5 Considerthe circuitin Figure 27.17 and assume the battery has after the switch is closed, what is the currentin the Figure 27.17 no internal resistance. () 」 battery (a) 0 (b) &/2A(G 28/Z04 8/元(e) impossible to determine (ii) After a 有 eyerylong time, what is the Currentin the battery? Choose from the same choices. theswitch is CC (3 前:銜1加信介2放 IntermittentWindshield Wipers nobiles are equipped with windshield wipers that can operate intermittently during alight rainfall. How does ofsuch wipers depend on the charging and discharging ofacapacitor7 民 The wipers are part ofan 及C circuit whose time constant can be varied by selecting different values of及through amultipo- Sition sWitch. As the voltage across the capacitor increases, the capacitor reaches a point at which it discharges and Higgers the wipers. The circuit then begins another charging cycle. The time interval between the individual sweeps of the wiperS 1 determinedjby the value ofthe time constant.

請問有人會這題嗎？

伙 Someeconomists believe thattheU.S.economy whole can be modeled with the following prodl function, called the Copp-Doujas prodidcfioj YA4K1/3L2/3, where Y is the amount of output, Kis the amount gf capital. is the amount oflabor and AisapParaete that measures the state of technology. For this Produetl function, the marginal productoflabor is MPL = (2/3) 4(K7DI公 Suppose that the price of outputPis2,4 83長自 1,000,000,and is 1000. The labor market 5 competitivez so labor is paid the value ofits marginal product, a. Calculate the amoutnt of output produced Y and the dollar value ofoutputPy b. Calculate the wage Wand the real wage W/P. (Notes The wage is labor compensation measured in dol lars, whereas the real wage is labor compensatior measured in units of output,) c. Calculate the labor share (the fraction of the value of output thatis paid to labor), which is (WP)/(PI d. Calculate what happens to output Y,the wage 品 the real wage W/P,and the labor share (WL)/(Py) 凍 each of the following scenarios: iInflation increasesPfrom2to3. 議 Technological progress increases A from 3tQ必 Capital accumulation increases灰from 1.000.000 to8000000. / iv Aplague decreasesTfrom 1000 to125. 人 Despite many changesintheUS economy QYS time, the labor share has been relatively sfa AA夫人 Wews ii

請問第三題的C為什麼不能選（強烈的支持人權，不惜一切代價）

AA red Sttated 選 2. You should stay away form other People ou繼Padao 下Sease (A). connecfed 人8 contagious alergie- (D) anthenfie 和 eye aporer ofhuman NgBSG hich she thinks should be Protected at any cost ~GA 過 wwWkKSVard (8 thusiasfie (CC intensive “eeasional 人

第14題為何不能選D?

一” ”'UQGnts - 2 生 8 計生 ‧ 2 沁 lso learn a lot in the long rur 5warding experience can ~ 26 CAYC > 202 同 the old woman's money, police had found lots 0f t te 全 S Jane is honest and always means what she Says, Mr Doraski ha glieve that she is worth -人多 for the mission. )tocount on to be counted on Counting On CCG8)cCec05) being counted on ing their time 加區 bo0ss got Very mad when he found somes employees were wasting ine instead of doi

第五題a求解 真的看不懂答案…… plz

twire bent into the shape ofa''V tofastring fxed at both ends Assuming that ring vibrates at its fundamental frequency 贍 amplitude 4 of the standing wave will the Wire | With the String? “18 placed at what COntact 4 (1 heG(C96 HZzZ) stringonaguitaris 64 cm long. Locate fhe position of the frets for the following notes: A (220 Hz): B (247 HHZ); C (262 Hz); D (294 Hz). 凡 殊軸 Consider a transverse wave of small amplltude on a / string。 Under the action of the wave, the String 1S moved ipward, as shown in Fig. 16.33. (a) Show that the power supplied by the left side to the right side is 220 必避 人 (b) Use the expression y(x, 仿 三 4 sin(/x 一 o/) to find the average power transmitted along the rope. Compare your reSUIt with Eq. 16.16. FIGURE 16.33 Problem 5. t, (1 Arope of mass 2 and length 工 hangs 全 that the time needed for a pulse to travel from end to the support is 了三 2V7/g. that the 1nSta taneou power tr anSmitted through | ) ntan S inimum where 》 和= i ity 和 is undera ar masS denS1 r 6 and 品 0nd and free to slide on \泊 11. (Da) 了 fixed that th' where freque ing wa (TryP EEUA tenSloi lnltial the asS: the aw 5$0%? JAeU 1I may 14.(ID A