1. physics!

    The New River Gorge bridge in West Virginia is a steel arch bridge 518m in length. How much does the total length of the roadway decking change between temperature extremes of -20.0C and 35.0 C? The result indicates the size of the expansion joints that must be built into the ...
  2. PLEASE HELP geometry trapezoid problem please help

    The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid. I don't get it... i got as far as the area is 40, and m (median) times the height is 40 as well... please help!
  3. English

    Diagram these sentances: 1Maggie woke me up with her silly crying. 2Darby cried, too. 3I awoke quickly. 4What was the matter? 5The hungery dogs barked and ran into the kitchen. Here are two wonderful websites that will help you with diagramming: http://members.cox.net/teachro...
  4. Chemistry

    Can someone please help me determine if these questions are correct. If there not can you point me in the rightdirection...please...please...and thank you! 1. Compared to the particles of a gas, the particles of a liquid a. Are not in constant motion b. Collide with the sides ...
  5. PLEASE

    PLEASE SOMEONE RESPOND TO MY QUESTION: Physics (12)! THIS QUESTION IS DRIVING ME NUTS!!! I DID THIS 7 DIFFERENT WAYS!!! I AM SO LOST! PLEASE! I NEED THIS QUESTION FOR TOMORROW!!!! P.S. thanks so much....very much appreciated!
  6. world history

    please, please, please help me with my question! 1. el nino affects the andean region by A.causing seasonal rains to come at the wrongtime b.decreasing the temperture c.causing drought d.causing torrential rains
  7. Social Studies

    PLEASE ANSWER! PLEASE ANSWER! PLEASE ANSWER! Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be?
  8. MATH Please Help Please

    Algebra 2 There is a graphs of the sequence f(n)=2n-3 and a graph of the function f(x)=2x-3 What difference exist between the two graphs? What accounts for the differences between the graphs in terms of domain and range? Help please I don't understand
  9. tight junctions

    prevent the contents of the intestine from mixing with bodily fluid on the other side of the epithelium? The statement you made could be true...I'm not exactly sure what you were trying to ask, though... sorry, was asking if tight junctions prevent the contents of the ...
  10. chemistry

    thanks Can someone please help me with these questions please? 1) How is evaporation different than boiling? 2) What advantage is there to using hot water to make ice cubes? 1) http://www.pkwy.k12.mo.us/west/teachers/anderson/pack7/boil/boil.html http://en.wikipedia.org/wiki/...
  11. Algebra

    I have a few more questions that I either need help with or just need checking. Is the algebraic expression a polynomial? if it is write the polynomial in standard form, 1. 6x-9+8x^2 I got Yes; 8x^2+6x-9 Perform the indicated operations. Write the resulting polynomial in ...
  12. English

    I need a thesis that encompasis this essay "Is this the promised end?" By Joyce Carol Oates. You can google it. Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. Once YOU have ...
  13. English

    Can you check the use of the following phrasal verbs, please? 1) First, Betty tells her husband Fred that Martin, her husband’s friend, saw him cheating on her with another woman. Fred begs her not to listen to Martin because he is a liar and he is making it up 2) Then, ...
  14. socials

    what would I say on it like what would the comic thing be? and what would charles be saying, something like please forgive me please help please check the my earlier reposts
  15. algebra

    please check the following answers and review the questions. tank you 1. 2/3 * negative 6 * 5 my answer: -100 2. a landscaper installs 12 sections of trellis. each section of trellis is 3/4 yard long. how many yards of trellis are installed altogether? my answer: 9 yards of ...
  16. Language art

    Just this one question please . 1.According to the MLA style, how should you format the title of a magazine article? A . In italics B. in quotation marks C. With underlining Please thankyou and anyone who has taking this please can you give me the correct answer? Thankyou ...
  17. pHYSIC

    Now let us consider the length of time that the Sun is visible. Wait until the planet is at the summer solstice (12:00am). a) How many hours of daylight are there on the summer solstice with the inclination at 45 degrees? To estimate the length of day, identify the time when ...
  18. sorry but more research help

    can you guys also give me websties on the process of committe investigations. i looked in goggle but they keep talking about ethics and all that. i swear, that before i ask for your help, i research for atleast 20 to half an hour on the internert to find my information and ...
  19. L. arts

    Johnny Tremain How does Rab's reaction to Johnny's hand compare to that of other people's? A. like others, Rab is horrified B. While others react with disgust or pity, Rab ignores the injury until Johnny mentions his band hand C. Rab expresses great pity for Johnny's accident...
  20. Chemistry - drugs

    Can anyone help .. State the functional groups that the BZP and TFMPP in Party Pills and MDMA have in common. ph //-\\/CF3 / [[ ]] [ N ] \\ // < Benzine [ [ N ] / N \ \H/ [ ] \ N / (BZP) H (TFMPP) / \ 0 0 \- / //-\\ Benzene \ - / \_/Me \NHMe MDMA Ectasy Me is used as an ...
  21. Reading please please help

    2. In several of the selections in this unit, immigrant parents play an important role. How does the fact that some of these parents are immigrants affect their children? Choose two selections and explain your answer. hi im sure some of you have read daystar I stand here ...
  22. History(Checking Answers)

    Hello, I'm stuck on a few questions(: Which was not a reason that New England became the center of the American Industrial Revolution? A) coastal trading ports on or near the Atlantic Ocean <-- B)access to Pennsylvania's abundant supply of coal C)Climate that supported a ...
  23. English

    Hello. I apologize for bothering you with similar questions but I'm supposed to explain the difference in tenses in the following English sentences taken from the original English press. Will you help me please? The context is absolutely the same, but the tenses are different...
  24. Quotes about English language origin

    So I wanted to start my etymology paper about fascinating word origins with a quote as my attention grabber. I am looking for a quote that talks about the english language and the origin of most of its words. Some interesting quote. I don't even know if there is a type of ...
  25. chemistry

    a.) Write the balanced complete combustion reaction for ethane (C2H6), producing CO2 and water vapour. Make sure to include phases. Also, make sure that the stoichiometric coefficients are whole numbers and are not fractions. b.) What is the enthalpy of reaction (ΔH°rxn...
  26. TRIG

    please help two questions h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 2 9 6 7 1 5 7 also A surveillance satellite circles Earht at a height of h miles above the surface. Suppose that d is the distance, in miles, on the sruface of Earth that ...
  27. Language Arts ~CHECK MY ANSWERS~

    Are these answer are correct? Please be 100% correct / honest. Directions: For questions 7–15, rewrite each sentence, adding commas where needed. 7) While I was researching skateboards, I found an interesting old newspaper. 8) In the June 29, 1999 edition of the Mercury ...
  28. To Steve

    Sorry here is completed question A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? 1- Randomly choose a marble don't replace it then randomly ...
  29. Philosophy( Please Help Me))

    Hi, can someone please tell me whether or not I have choose the correct answer for these three questions. 1. According to Gilligan, which of the following best describes male thinking? a. Males adopt a personal way of relating to moral issues. b. Males adopt an abstract way of...
  30. please help

    oook that site didn't help much I don't need to know how to suck up to my teacher. I need to know how to set up a ratio, can someone help me?? The format for ratios is # : # :: # : # Example 1: 2 :: 2 : ? 1 is one half of 2... so 2 would be one half of ? Four , of course. ...
  31. Pre Calculus 12

    I also do not get these inverses questions y = 5(x-3)^3 x = 5(y-33)^3 I divided 5 on both sides and got 1/5x = (y-3)^3 Then do I cube root the 1/5x or something to get rid of of the cubed on (y-3)? Also y = x-2/5x-3
  32. english

    i teach English at a high school and my students recently read of mice and men i need some good discussion questions for them.
  33. PHysics

    You said that all my questions had been answered else where, when I search I cant find anything on them. . . how do I find them I have looked through 4 pages . . .
  34. chemistry

    I need some help with afew questions that I have and I have to go to bed soon for school tomorrow. how are molecules and polyatomic ions similar?
  35. Questions on economics

    1 what do economic model assume? 2 in what way are models helpful to economists? 3 what does an economist develop in order to test his or her theory or model?
  36. psychology, counselling

    An assignment on interviewing a counsellor. What are the appropriate questions to ask a counsellor? I would like to know more about his job and the problems that he is dealing with.
  37. mathematics

    Draw a graph of the mirror line y=x, the function f:x 3x+2 and its inverse f`1 x x-2/3, for the domain of x, -2<x<8 x -2 0 4 8 y=x -2 0 4 8 These numbers were given to me what i want to know is why 0 and 4 and how do i come up with the numbers on my own for future ...
  38. algebra

    need help with 2 questions first It has been a long time since I did algebra and don't rememeber how to work the problems 1/5(x+1) + 2/5(x-1) = 3/10 2nd problem 0.1(2x-1) + 0.02(4x + 4) = 0.05x
  39. Algebra

    Hello, I am having a bit of trouble with two Algebra questions 1. Solve x= 8x - over the domain [0, 2, 4, 6] 2. For what values of a is the equation /a/ =5 true? Thanks in advance.
  40. Math

    A student guesses on every ??? of a multiple choice test that has 9 quetions, each with 3 possible answers. what's the probability the student will get at least 7 of the questions right?
  41. Physics

    acceleration due to gravity questions Determine the time of fall when an object is dropped if the average velocity of the falling object was 12m/s?
  42. Ag. Biology

    I'm stuck on 10 questions on my homework, I'll post them separate. 25. Describe the role of an operon in a prokaryotic cell, and give an example of how an operon works.
  43. geometry

    Use the diagram below to answer the following questions.||. Show all work to receive credit a. Find the value of x. b. Find m
  44. math

    I am bouncing this questions for an hour now and still have not come up with answer I believe in. Can you solve for a variable in an equation? Explain the answer Can you help?
  45. geometry

    to all the people that helped me with my recent geometry questions thankyou my grade I received was 45 out of 50 points best I've ever done in my class.
  46. Math

    On a multiple choice test you guess he answers to two questions. Each question has five choices. What is the probability that you both answers correct?
  47. college prep english

    Ok so long story short I need help with homework......I have 3 questions on genre and its 2 genre's how do I know which one to write about ?
  48. computer sciece

    1.which directory does Vim to load color scheme? 2.Set a key mapping in Vim and explain how it works? can someone help me with this questions...
  49. Information Technology 130 Programming Concepts

    Review Questions and Excercises Fill-in-the-Blank 1. A(n) _________ is information that is being passed to a function.
  50. Statistics

    Find 3 different research questions and the appropriate data one needs to collect for each, including the level(s) of the data to be collected for each question.
  51. algebra

    I have a couple questions I need help on. Which model is most appropriate for the data set? (-1,20),(0,10),(1,5),(2,20) And How many real-number solutions does the equation have? -8x^2-8x-2=0 Thanks for the help
  52. math

    on a biology test a student answers 25 questions correct but doesnt pass. on second attempt he gets 37 correct. what is the percent of increase
  53. english

    questions based on the book to kill a mockingbird: describe mr radley(not nathan radley. what does jem do to thank their mysterious benefactor and what happens after.
  54. english 3

    One of the key questions historical criticism attempts to answer is: Who made the most important scientific discoveries of the time? Answer
  55. English

    Could someone explain whats the difference between these two questions? Why do you wish to study the program(s)? What influenced your decisions to apply to the program(s)?
  56. Literature

    These questions regards "Rules of the Game" by Amy Tan. 1. What did Tan find most awarding about the transformation of her work to film?
  57. questions

    Hi i have a question about air pollution that comes out of cars?!?! where does it come from? is it the smoke coming out the back of the car?!?!? where !?!
  58. Physics

    HI I'm just looking for an answer for 3 questions as my textbook does not explain the answer. How a tin can loses heat through: 1) Conduction 2) Convection 3) Radiation
  59. Chemistry

    I'm looking for a video of a chemical reaction that can help me answer these questions What are the names of the reactants and products and their states @ room temperature? What type of reaction is it?
  60. Chemistry

    I have two questions that I do not know how to answer. Thanks for your help! 1. Calculate the [OH^-], [H^+], pH, and pOH for a 0.50M solution of CN^- 2. Calculate the molar solubility of PbCl2 in 0.40M KCl
  61. Maths

    On a certain examination the student must answer 8 out of 12 questions including exactly 5 of the first six. In how many ways may he write the examination.?
  62. math

    For questions 1 and 2, use the integer values of x from -3 and 3 to graph the equation 1. y= -2x^2 +3 (the ^ means an exponent) 2. y= 1/3 |x| -2 Find the horizontal change and the vertical change from the translation P(4, -4) --> (-4, 7)
  63. Ms. Sue help

    Ms. Sue, I have posted 2 questions for ELA today but never got a response. Can you see if I made an error when I sent? Thank you, as always for your help.
  64. math/combination probability

    what is the probability of getting all questions right on a 15 question, 3 multiple choice (each) with just guessing? i did 15 C 3 and got 1/455
  65. chem

    what celsius temperature corresponds to absoulte zero? Kelvin = C + 273.15. solve for C when K = 0. You should use the same name when posting separate questions. how did ya figure that one out?
  66. Life Science

    How did Mendel’s approach to answering scientific questions differ from that of his contemporaries? Thank you for using the Jiskha Homework Help Forum. You might want to see the answer just posted for Diana.
  67. biology

    Hey can you help me out with these questions? What is the separation of homologous chromosomes during Anaphase I of meiosis called? What is the animal secretion serving as communication between members if the same species? Thanks?
  68. chemistry

    Write the reaction equation for Isopropylbenzene producing Benzene P.S I don't mean to be overburdening you with the same kinds of questions its just that there is a quiz on this stuff on Monday and I want to be FULLY prepared LOL
  69. Math

    Would someone be so kind as to let me know the following 2 questions?: (1) 2% of 138,451.70 gives this amount: 3,837.39 ? (2) How to write in numbers 36 millions plus 1900? Thanks ever so much!!! Rosedala
  70. Writin

    The assignment is to write opinionated questions that are arguable for a class discussion. One subject is the prisoners treatment during war time - can you give me an example of a possible question?
  71. College Finite Math

    Involving a true-false test. Assume that 8 questions are answered by guessing. What is the probability of at least 6 correct answers? I know this a Burnoulli Trial problem and that N=8 and p=.5 and q=.5 I just don't know where to go from there.
  72. MATH Prob.

    Find the probability of correctly answering the first 4 questions on a multiple choice test if random guesses are made and each question has 3 possible answers. A) 4/3 B) 1/81 C)1/64 D)3/4 I automatically think D.
  73. chemistry

    Questions 7-9 refer to the following substances. (A) H2 (B) CH3OH (C) CH2Cl2 (D) KCl (E) Co 7. Is a solid at 25C and 1 atm 8. Is capable of hydrogen bonding 9. Its properties are governed by London(dispersion) forces.
  74. Questions about the Crucible

    1) What happens when john turns to elizabeth for advice in act 4. Also... I cant find the physical appearance for Francis Nurse. Does anyone know how he is portrayed and looks like in the play
  75. maths

    Use the quadratic formula to solve the equation x^2-7x+9=0 I've tried to do this manytimes but can't seem to get it. I've other questions like it so if someone could talk me through this one maybe i'd understnad the method better thanks.
  76. planning and budgeting

    I need to know 8 questins that would be asked by a city council meeting related to a new criminal justice facility. (political, tax, demographic, and administrative questions)
  77. science

    Think about the impact that two (2) of your meals have on our world from an ecological and economic perspective. You can pick breakfast, lunch or dinner, and then answer the following questions
  78. english

    Instructions in procedural texts should appear in the form of __________. a. descriptive phrases with adjectives b. commands with active verbs c. questions and answers d. complex sentences and paragraphs
  79. Science

    using an example explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life? Do you have any suggestions
  80. Algebra 2

    I have solved these equations but the directions require me to show work or provide an explanation and I don't know how.Here are the questions: Write each of the following in exponential form: 1) log3 x = 9 3^9= x 2) log2 8 = x 8= 2^x 3) ln x = 2 e^2 = x 4) log x = 5 10^5= x
  81. Math

    the questions says if carlos eats 1/2 icream every night for dessert. He has 3 cups left. How many days can he eat a 1/2 cup before running out. How do I solve this problem
  82. maths

    1a) Solve each of these questions by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 For each question in part (a), check your solutions by substituting them back in to the equation.
  83. maths

    Solve each of these questions by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 For each question in part (a), check your solutions by substituting them back in to the equation.
  84. maths

    1a) Solve each of these questions by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 For each question in part (a), check your solutions by substituting them back in to the equation.
  85. Spanish

    I have two questions: 1) Como se llama la plaza donde celebraban desfiles militares? (12 letters) ----- -- ----- 2) Quien pesó oro en la Casa del Cordón? (20 words) -- ------ ------- ----- Thank you for your help
  86. Physics0

    how to estimate the root mean square speed of hydrogen molecules in the earth's atmosphere in km h^-1? thanks for your help, I'm actually teaching myself physics and that why sometimes I get stuck even with simple questions
  87. Finance

    Asset-liability management is the term where the maturity of an asset is similar to the time that the liability expires. Which of the following is not good asset-liability matching? (Points: 4) Brand new quality car financed by a 5-year loan. Retirement fund for a 35-year old ...
  88. Chemistry- HELP

    Can someone please help me? Are these questions correct...if not any suggestions would be greatly appreciated! 1. What salt forms as the result of a mixture of calcium hydroxide and hydrochloric acid? a. CaCl b. CaHCl c. CaCl2 d. CaOH e. Cl(OH)2 I believe this is C- CaCl2, is ...
  89. another precal

    i have two questions for you to check please! 6cos^2x+5cosx-4=0 where 0degrees < or equal to 0 which is < or equal to 360. I got that this factors to (3x+4)(2x-1) so the answer is x= -4/3 and x= 1/2 ?? right? and the second question: determine sin2theta, cos2theta, and ...
  90. pronouns/nouns

    Could you please help with some of my homework questions of nouns and pronouns We can help you better, if you give us the specific questions. However, here are some sites that may be helpful. I got them by using the key words "noun pronoun" to search on Google. http://www.arts...
  91. History

    Why was self-rule initially difficult for the Congo? Self-rule was initially difficult because the Congolese had no experience running companies or governments. They also fought among themselves because they belonged to many different ethnic groups. The Congo was not unified ...
  92. US History UGGGH

    Sorry another question I am struggling with finding information in my text and on the web. Some things I am reading seem to be that the answer is d, all of the above. I know that Stalin wanted forces on the East front, but the Allies said it wasn't possible. Stalin also didn't...
  93. math

    Something times something equals 97 Are you supposed to factor 97 as the product of integers? We need a little more info to help you. If you are expecting integer results, wait no more as 97 is a prime number. Therefore, no two integers have a product of 97. If you are not ...
  94. Math (Word Problems)

    Hello and I’m sorry, I was wondering how to solve this problem, it looked easy at first but it was really difficult to find the answer. Here’s the question: A recipe for 6 quarts of punch calls for 3/4 cups of sugar. How much sugar is needed for 9 quarts of punch? A 5/8 B ...
  95. 7th Grade English

    I have this project for english about the PTA Reflections. Ok you see we have to write a 5 paragraph essay in which I discuss what you believe diversity means. Be sure yo have a topic sentence for each new paragraph, and provide supporting details. Please be creative and come ...
  96. critical thinking (english)

    How can readers distinguish between prejudicial and non-prejudicial use of rhetorical devices? The reader can distinguish between nonprejudicial and prejudicial rhetorical devices by: 1. Analyzing the propaganda techniques used in the passage. 2. Studying other sources. 3. ...
  97. Chemistry

    Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00M solutions of their ions. If 2.10g of metal is plated in the voltaic cell, how much metal is plated in the electrolytic cell? Another plated question... ...
  98. childcare

    1.Temperatures in child care education settings should be set at in summer and in winter. A. 55 to 65, 65 to 85 B. 60 to 63, 70 60 73 C. 68 to 72, 65 to 75 D. 72 to 80, 70 to 78 My answer is C. 2. Which of the following is an obsticle to learning for a beginning mover A. ...
  99. Internal Assessment Topic

    I have to come up with an Internal Assessment topic for history, and I want something that focuses on Trotsky, but I'm having trouble thinking of a good topic. I would've liked to compare the roles of Trotsky and Lennin in the October Revolution, but my friend has chosen that ...
  100. Physics

    A 4.70 nC point charge is placed at the centre of a hollow metal sphere that has an inner radius 4.70 cm and an outer radius 17.6 cm. The metal sphere itself is charged to 8.40 nC. a)What is the magnitude of the electric field at a distance of 1.60 cm from the centre? b)What ...
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