不會寫

Let's Try it I. Stella got a arrive and leave. as a clerk in a hotel. She needs to help guests () when they 2. The teacher wants us to raise our hand if () we have any 3. The man 4. We need to his lesson and would not repeat () the same mistake ( our own shopping bags when we go shopping.

不會寫

Let's Try it I. Stella got a arrive and leave. as a clerk in a hotel. She needs to help guests () when they 2. The teacher wants us to raise our hand if () we have any 3. The man 4. We need to his lesson and would not repeat () the same mistake ( our own shopping bags when we go shopping.

求解🙏

The photoelectric effect can be used to measure the value of Planck's constant. NOTE: The following data are fictional, and will give a result that is quite different from the real value of Planck's constant. Be sure that you do not use the real value of Planck's constant in any calculations here. 1 S -1 Suppose that a photoelectric effect experiment was carried out using light with v = 7.56 × 10¹4 s-¹, and ejected electrons were detected with a kinetic energy of 2.41 × 10-¹1 J. The experiment was then repeated using light with = 9.81 × 10¹4 s and the same metal target, and electrons were ejected with a kinetic energy of 9.09 × 10-¹1 J. Use these data to find a value for Planck's constant (in J • s). Hint. It may help to start by thinking about how you would calculate the metal's binding energy if you already knew Planck's constant. Submit Answer S Try Another Version 2 item attempts remaining

請問大家20題為甚麼不能選c?

In at some time in their lives. There have been very few history of mankind, there being mainly some strict religious groups, 12. to this in the entire who sailed from Europe to America, 13. the first Puritans ji za 14. felt that music should only be used to worship their deity and never for pleasure 15. b Tesalb auoigs Even joyful things, however, have their limits. The best song or dance in the world would become less and less enjoyable if it continued 16. Part of the pleasure in song and dance is 17. it has a beginning and an end. When it becomes too drawn out over a long time and 18. it becomes boring. We become impatient and 19. want to see or hear it. This too is we have come to use the idiom "song and dance" to mean a boring, long excuse or explanation which is of no interest to us. repetitious (B) endlessly (G) how (H) exceptions (C) what (alone of alo suc such as no longer (F) that participate as if Ewho (K) 三、篇章結構 Being left-handed gives me a view of what it is like to be a minority. After all, I'm white

求解

Chrome 檔案 M Gmail 3 My Courses Course Home Syllabus Scores YouTube Pearson eText Study Area Purchase Options User Settings Course Home X Ghe binding energy of a two-par x + openvellum.ecollege.com/course.html?courseld=17667848&OpenVellumHMAC-9c8d5dd7baa0c70ec3a75db4e52f2d39#10001 Document Sharing Course Tools 單 檢視 歷史記錄 書籤 設定檔 分頁 視窗 說明 地圖 > 翻譯 <L.8 Problem 8.51 Part A W = Submit VAE Provide Feedback How much work would be required to move a satellite of mass m from a circular orbit of radius r₁= 2re about the Earth to another circular orbit of radius r2 = 3rE? (rE is the radius of the Earth.) Express your answer in terms of the variable m and constants rE, ME, and G. Request Answer https://session.masteringphysics.com/myct/itemView?assignment ProblemID=176946298 10月 13 tv ? 10月13日 週四 上午12:37 - 999+ ■ 8 of 10 更新: Constants Next >

請問第8題為什麼是exposure

1. 觀參 2. 以 (1) # 6. 7. 8. 9. creativity 10 cation exposure expose behave (assign) today is to read twenty pages in our science (create) to keep coming up with interesting new ideas. textbook. It takes I like the apartment a lot because the rent is not high and the (locate) is perfect. Studies have shown that will cause skin cancer. Mother said that she wouldn't allow us to watch TV if we couldn't (expose) to too much solar radiation 1 2

想問3-9的a跟c

Problems 3-1. Explain the difference between *(a) random and systematic error. (b) constant and proportional error. *(c) absolute and relative error. (d) mean and median. *3-2. Suggest two sources of systematic error and two sources of random error in measuring the length of a 3-m table with a 1-m metal rule. 3-3. Name three types of systematic errors. *3-4. Describe at least three systematic errors that might occur while weighing a solid on an analytical balance. *3-5. Describe at least three ways in which a systematic error might occur while using a pipet to transfer a known volume of liquid. 3-6. Describe how systematic method errors may be detected. *3-7. What kind of systematic errors are detected by varying the sample size? 3-8. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is (a) 500 mg. (b) 250 mg. V(c) 125 mg. (d) 60 mg. 3-9. The method described in Problem 3-8 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative érror resulting from a 0.4-mg loss is not to exceed *(a) -0.1%? (b) -0.4%? (c) -0.8%? (d) - 1.1%? 3-10. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the error if the total volume of titrant is percent relative (a) 50.00 mL. (c) 25.0 mL. 3-11. A loss of 0.4 mg of Zn occurs in the course of an percent relative analysis for that element. Calculate the error due to this loss if the mass of Zn in the sample is *(b) 10.0 mL. (d) 30.0 mL. 190 (c) 188 (d) 4.52 x 103 4.63 x 103 4.53 x 10 ³ √6 *(a) 30 mg. (b) 100 mg. *(c) 300 mg. (d) 500 mg. 3-12. Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the sets, and find the mean devi- Vation for each set. Use a spreadsheet if it is convenient. *(a) 0.0110 0.0105 (b) 24.53 0.0104 24.68 24.81 24.77 39.61 862 (f) 850 MA 3-13. Challenge Problem: Richards and W the molar mass of lithium and colle data. 24.73 Experiment 1 2 3 4 5 6 194 447 X 10 7 448 X 107 4.58 X 10 (a) Find the mean molar t workers. (b) Find the median molar ma (c) Assuming that the cam molar mass of lithium is the absolute ertor and of the mean value demi Willard. (d) Find in the chemical ues for the molar mus since 1910, and ag a table or spreadshera 1817 given in the a Richards and Willd. Com mass versus year to la of lithium has chang Suggest possible abruptly about 18 ant de (e) The incredibly deals Richards and W that major changes will occur. Disc calculation in pat (f) What factors ha since 1910? (g) How would you mass? 6See Chapter 2 of Applications of Microsoft Excel in Analytical Chemistry, 4th ed., for information about statistical 7T. W. Richards and H. H. Willard, J. Am. Chem. Soc., 1910, 32, 4, DOI: 10.1021/ja01919a002. built-in statistical functions. "Answers are provided at the end of the book for questions and problems marked with an asterisk The I of ₂ or inc rce of able vas error c often in individu ate resul data in rtainties. dimensio andom e analysts The result

紅字是解答 那would可以嗎૮˃̵֊ ˂̵ ა

2. A security guard patrolled that...) >__A A security guard break in. the area. He didn't want a burglar to break in. (...for fear Jurij oz. patrolled the area for fear that ADI JUR a burglar would might

想問第二小題這句，是與過去事實相反的假設然後pp省略嗎

KUSO英文法 4 II. 填空:34%(每格一字,一格2分,共17格) Coul 1. I can't slam dunk, but I wish I were been 2. She didn't go to the movie with him, but she wishes she had 3. Annie is not available () right now. If she were. I would ge

求英文填空第14題

American Civil War was drawing to a close, French historian Édouard de Laboulaye proposed that a monument be built as a gift from France to the United States 13. the latter's success in building a logrice mi desh gola ebigy sag is most inneb, 0. viable* democracy and to honor the efforts of late president Abraham Lincoln. In addition, it was wen adi smoolsw yedi bloowinnon tont juodur Ingin Split gririch hon Laboulaye's hope that 14. attention to the achievements of the United States in abolishing* slavery*, nousbbs kaino 70090 1150i- grinamed af the French people would be inspired to create their own democracy in the face of a repressive monarchy. bas esmilet tad zestaze, 10 oupazom Isopilog, vavans, of bem clerfin unle Sculptor Frédéric Auguste Bartholdi, known for his large sculptures, was commissioned* to oversee* this di Aquouiry project. The goal was to complete the sculpture in 1876 to celebrate the United States' one hundred years di Jos blod's Houd (a) unorius sail of roomi sibling testtorianiom is gnivig ostil vilicujos ar egys from the United Kingdom. The statue was designated as a national monument in 1924. of 15. viable bom99009 abolish slavery # commission E oversee T 11. (A) this statue locates (B) lay this statue 1 (C) does this statue stands (D) stands this statue 2956i ording ai des d E URED ) (C) which presented (B) to be presented (D) 12. (A) presenting inddsuorit broide and it hort com 2 2000, otel odt or lord catch online nedur to (D) in competition with (C) in celebration of (B) within reach of tol s bening hot blow art (C) 13. (A) close to (D) calling onionat ajoubora waeng no nose od me big wor (B) called (C) 14. (A) calls (D) continent 2996iq wildung jedin bas ellow zeitsleg mis mebom odil 250 lg di 20 low as adored of guidiola moti Tentsio 195712 2011 20200 102 10emerlo brusesse o sbuloni among billing nommo * om III. X vins Dooq (C) by calling (B) ) 15. (A) colonization (B) independence (C) removal : 20% beralamos e on (D) presented o 129 mist (B) annual nam abse (C) short of dito (D) matchmaking (E) keep up consoreilebac