Questions Asked on
April 12, 2009

  1. Physics

    An 80- quarterback jumps straight up in the air right before throwing a 0.43- football horizontally at 15 . How fast will he be moving backward just after releasing the ball? Suppose that the quarterback takes 0.30 to return to the ground after throwing

    asked by Lola PLEASE HELP!
  2. MACROECONOMICS

    Which of the problems in the construction of the CPI might be illustrated by each of the following situations? Explain. a. the invention of the Sony Walkman b. the introduction of air bags in cars c. increased personal computer purchases in response to a

    asked by SARA
  3. Chemistry

    IN my experiment, I was doing a qualitative analysis of Group I and II anions using a flowchart. IN the chart I added 5 drops of 0.1M AgNO3 and several drops of 3M HNO3 to 5 drops of solution and found that a precipitate was formed. Thus it was classified

    asked by David
  4. chemistry

    Based on a Ksp experiment, describe a way to soften water by removing calcium ions. What would be the advantages and disadvantages of your method?

    asked by Lucy
  5. Chemistry

    What is going on in the hexane layer at the end of the Group I anion experiment? (when color of hexane layer is yellow you have Br- and when it is brown or purple you have I-.) please explain

    asked by David
  6. AP Chemistry

    What is ksp for lithium carbonate? I got an answer of 2.40 x 10^-4 but i need to check that answer with somebody who can work this out

    asked by some kid
  7. Chem

    Which chloride should exhibit the most covalent type of bond? WHY? A) NaCl B) KCl C) BaCl2 D) BeCl2 E) CaCl2

    asked by Sandy
  8. Chemistry

    A sealed flask containing 1.0 mole of H (g) and a sealed flask containing 2.0 moles of He(g) are at the same. 2 temperature. The two gases must have equal 1. masses 2. volumes 3. average kinetic energies 4. numbers of molecules

    asked by .
  9. Chemistry-Solubility Product

    Why does effervescence when the Group 2 anion precipitate is acidified imply the presence of (CO3)2- ?

    asked by Dave
  10. chemistry

    What would be the advantages and disadvantages of using tribasic sodium phosphate (aka trisodium phosphate) to soften water by removing calcium ions?

    asked by David
  11. chem repost

    a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g) + 2O2(g) --> CO2(g) + 2H20(g) calculate the partial pressure of methane needed to react completely with the O2 in the vessel. What is the total pressure after the reaction is complete if the

    asked by sarah
  12. ap chem repost

    a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g) + 2O2(g) --> CO2(g) + 2H20(g) calculate the partial pressure of methane needed to react completely with the O2 in the vessel. What is the total pressure after the reaction is complete if the

    asked by sarah
  13. re-apchem post

    a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g) + 2O2(g) --> CO2(g) + 2H20(g) calculate the partial pressure of methane needed to react completely with the O2 in the vessel. What is the total pressure after the reaction is complete if the

    asked by sarah
  14. AP Calculus

    Let R be the first quadrant region enclosed by the graph of y= 2e^-x and the line x=k. a) Find the area of R in terms of k. b) Find the volume of the solid generated when R is rotated about the x-axis in terms of k. c) What is the volume in part (b) as k

    asked by some kid
  15. Chemistry

    A sealed flask containing 1.0 mole of H2(g) and a sealed flask containing 2.0 moles of He(g) are at the same temperature. The two gases must have equal 1. masses 2. volumes 3. average kinetic energies 4. numbers of molecules

    asked by .
  16. Chemistry

    The experiment that I did in lab consisted of performing a qualitative analysis of group 1 and 2 cations and anions. The first thing that I did was to add 5 drops of 3M HCl, centrifuge it, and to observe whether a precipitate would form. It did and in the

    asked by David
  17. Chemistry

    Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the sample remains the same? 1. from 200°C to 400°C 2. from 400°C to 200°C 3. from 200K to 400K 4. from 400K to 200K

    asked by .
  18. chemistry

    Why do group I cations form precipitates when mixed with HCL?

    asked by Anonymous
  19. english3

    (The Great Gatsby) gatsby stands on the crimson carpet as he learns that tom is in the house. what might the color of the carpet and the placement of his feet mean?

    asked by renee
  20. AP Calculus

    The position of a particle moving on the x-axis at time t>0 seconds is: x(t)= e^t - t^1/2. a) Find the average velocity of the particel over the interval [1,3]. b) In what direction and how fast is the particle moving at t= 1 seconds? c) For what values of

    asked by some kid
  21. Check Business

    4. Which of the following companies faces the problem of undercapitalization? A large corporation that has been hit with a major lawsuit because one of its products has a design flaw that has led to serious injuries. A small new company struggling because

    asked by Bryan
  22. Physics!!!

    When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the

    asked by sophie
  23. Chemistry

    When dilute nitric acid was added to a solution of one of the following chemicals, a gas was evolved. This gas turned a drop of limewater, Ca(OH)2, cloudy, due to the formation of a white precipitate. The chemical was.... a. the household ammonia NH3 b.

    asked by Caroline
  24. Physics

    When William Tell shot the apple off his son's head, the arrow remained stuck in the apple, which means the collision between the arrow and apple was totally inelastic. Suppose that the velocity of the arrow was horizontal at 75 m/s before it hit, the mass

    asked by Claire
  25. Physics

    A rubber ball is thrown against the wall. The ball has a mass of 4 g and strikes the wall perpendicularly with a speed of 12 m/s. The acceleration is constant while the ball is touching the wall. After touching the wall, the center of mass moves .5 cm

    asked by Michael
  26. physics

    When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the

    asked by sophie
  27. Chemistry

    Oxidation Numbers AlH(SO4)3 and the overall charge is -2 BaCr2O7

    asked by Karen
  28. Algebra 2

    Choose the equation that best represents an ellipse for the given foci and co-vertices. 1. foci (+-2, 0) co-vertices (0, +-4) 2. foci (+-3, 0) co-vertices (0,+-6) 3. foci (0, +-3) co-vertices (+-5, 0) Choose the equation for the hyperbola centered at the

    asked by Karen
  29. Inorganic chemistry

    A 50.0 ml sample of 0.0240 M NH(aq) is titrated with aqueous hydrochloric acid. What is the pH after the addition of 15.0 mL of 0.0600M HCl(aq)? (Kb of NH3= 1.8 x 10^-5) Initial amount of NH3 (0.0240)(0.05) = .0012 mol Amount of HCl added (0.0600)(.015) =

    asked by Steve
  30. Physics

    A cat crouches on the floor, at a distance of 1.6 m from a desk chair of height .45 m. The cat jumps onto the chair, landing with zero vertical velocity. The desk chair has frictionless coasters and rolls away when the cat lands. The mass of the cat is 5.7

    asked by Michael
  31. Physics!!

    An electromagnetic wave is produced by: A. an accelerating charged particle or changing magnetic fields B. an accelerating uncharged particle and changing magnetic fields C. a stationary charged particle and a magnetic field D. any moving particle and a

    asked by sophie
  32. Biology- Human Karyotyping

    Could someone help me find 2 disorders that are the result of non-disjunction. I already have down syndrome, klinefelter syndrome, Turners Syndrome, Super Males, Triple X syndrome, Edward's syndrome and Patau's syndrome. Thanks in Advance

    asked by Jenny
  33. Inorganic chemistry

    What charge in coulombs is required to deposit 0.301g Cu(s) from a solution of Cu^2+? Cu^2+ 2e^- = Cu 0.301g/63.5g/mol = 4.7 x 10^-3 mol Cu (4.7 x 10^-3 mol Cu) (2 mol e^-/mol Cu) I should be able to mutiply that by 96,500 (Faraday number) to get 914C, but

    asked by Steve
  34. law

    Did the police conduct a lawful search and seizure under the guidelines described in the text. Why or why not? o Was the suspect’s Fourth Amendment rights violated?  Was it reasonable?  Was there probable cause? o What evidence in the case study

    asked by llll,ml;''
  35. Ethics Animals Paper

    Would this be a good introductory paragraph? For several years, there has been an on-going debate over animal rights, animal testing, and where animals fit into our society. Whether or not they have morals, or if it's ethical to test them for the benefit

    asked by Summer
  36. math

    A school is soundproofing a band room with insulating tiles. The room is rectangular and is 30 feet long, 40 feet wide, and 12 feet high. All four walls, the floor and the ceiling will be covered, but a window that is 10 feet long by 4 feet high will not

    asked by Anonymous
  37. Chemistry

    33. As ice melts at standard pressure, its temperature remains at 0°C until it has completely melted. Its potential energy 1)decreases 2)increases 3)remains the same

    asked by .
  38. English (SATIRE)

    How does this essay show SATIRE???? ODE TO CREDIT CARD DEBT Nothing matches the excitement of finding a credit card application in the mail, its majestic, postage-paid envelop neatly tucked inside. I already have many cards -- ten or twenty or fifty, of

    asked by Soraya
  39. Calculus

    Show that the function f(x)= x^(3) +3/(x^2) +2 has exactly one zero on the interval (-infinity, 0). So far this is what I have: 0=x^3 + 3/(x^2) +2 -2= (1/x^2)(x^5 + 3) -2x^2= x^5 +3 But now I'm stuck. I also am not sure if this is how I'm supposed to be

    asked by Lauren
  40. Physics

    Object A crashes into object B. A is more massive than B. Which is a true statement? a. A experiences an impulse b. B experiences an impulse c. Both A and B experience an impulse of equal magnitude d. Both A and B experience an impulse, but the impulse on

    asked by Jacob
  41. Spanish

    Can someone check my translations? Translate the following Spanish into English. 1. ¿De dónde eres? Where are you from? 2. ¿Cómo eres? How are you? (What is this asking?) 3. ¿Qué clases tienes? What classes do you have? 4. ¿Qué vas a hacer la fin

    asked by Larry
  42. chemistry

    If a block of wood with the length 1.05 m, height 5.24 cm, and width 3.36 cm and a mass of 2.56 kg what is the density?

    asked by eve
  43. chemistry

    If a cube with edges of 1.000 cm weighs 25.68 g, what would the mass of a cube of the same material with sides 2.72 cm in length be?

    asked by eve
  44. math sos.

    dURING THE FIRST PART OF A TRIP, A CONOEIST TRAVELS53 MILES AT A CERTAIN SPEED . The canoeist travels 9 miles on the second part of the tripat a speed 5 mph lower.The total time for the trip is 5 hrs, what was the speed on each part of the trip. The first

    asked by tera
  45. Business

    What is financial management? Identify the duties and responsibilities of financial managers.

    asked by Bryan
  46. physics

    A gold wire 5.90m long and of diameter 0.890 mm carries a current of 1.21A. A)Find the resistance of this wire. B)Find the potential difference between its ends. Can someone please help me I don't know how to answer these questions? R=p(L/A)

    asked by help
  47. humanities

    I need to write a 2 page critical reading response journal on slaves in Ancient Athens. I am a Sophomore at a community college. I understand what I am reading, but I cannot put it down on paper! (Partly due to my disability which affects my cognitive

    asked by Leslie
  48. Topic Sentence

    What would my argumentative topic sentence be when I'm talking about freedom from war being better than the freedom of global peace? The freedom that war creates is better than the freedom of global peace. ( I think that it sounds weak)

    asked by Kara
  49. AE.. does it sound ok

    Constructivism Constructivism is an educational theory that emphasizes hands-on, activity-based teaching and learning during which students develop their own frames of thought. Classroom Management I would begin each class period with a positive attitude

    asked by scooby91320002
  50. spanish

    please check my grammar, and please tell me which one I can change to imperfect, because I try to write some sentences in preterit, and some in imperfect, thank you!!! Aprendí español porque quise mejorar mi español. Visité los cuadros en el

    asked by TT
  51. FRENCH to SraJMcGin

    Bonjour et Joyeux Pâques! Could you please check the following; my question concerns the use of LEUR and LEURS I know that it is "leur voiture" and "leurs enfants" but I would like to clarify the sentences below: 1) je LEUR donne quelque chose 1a) je LEUR

    asked by E.G.
  52. bio

    Assignment: Photosynthesis and Cellular Respiration Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multi-cellular, the exchange of energy and the formation of products consist of a

    asked by sabrina
  53. math

    13 out of 25 college students work at part-time jobs. What percent work at part-time jobs?

    asked by sw
  54. Socials Studies

    What are the correct answers for this? 1. The________succeeded Elizabeth I and dislike the Democratic traditions of England. a.)Stuarts b.)Reids c.)Tudors d.)Cromwells I choose 'a' 2. People were angry with James I because he_________ a.)neglected the army

    asked by John
  55. AE..

    i need help looking for information on Constructivism to answer this classroom organization, motivation, discipline, and teaching styles

    asked by scooby91320002
  56. English

    1. I talk with one of my friends on the cell phone. 2. I read messaages on my cell phone. (Are both correct?)

    asked by John
  57. health

    Dr. Bob's computerized records have been compromised by a hacker,resulting in damages to patients.Which of the following is most true?

    asked by Anonymous
  58. WORLD GEOGRAPHY LESSON 2

    the native people of australia are known as the word ayatollah means the worlds leading coffee exporter is the european country sometimes known as the hexagon is which canadian province is primarily french-speaking? the britain of the south is another name

    asked by JESSIE
  59. FRENCH -another question

    Difference between "qui est-ce qui" and "qui est-ce que" and also between "qu'est-ce qui" and "qu'est-ce que" 1) who is there - qui est-ce qui est là 2) what is there - qu'est-ce qui est là 3) whom do you see - qui est-ce que tu vois? 4) what do you see

    asked by E.G.
  60. biology

    relative to the transcription start site, where would the promoter and terminator be located?

    asked by heather
  61. PowerPoint presentation

    What is the proper way to cite sources in a Powerpoint presentation. The school I attend uses APA format. Obviously cite the source in the text on the slide but is there a slide solely for references or do full references just go in speaker notes?

    asked by JaneDawn
  62. Romeo and Juliet Quick Question

    I'm doing a paper on act 5 of romeo and juliet does Capulet think Romeo killed Juliet

    asked by Matt
  63. COLLEGE MATH

    In 2003, the probability that a randomly chosen bag of cement from the world supply was consumed in the U.S. was .05, while the probability that it was consumed in China was .45. What is the probability that a randomly chosen bag of cement was consumed in

    asked by Suzie
  64. math

    Write 3/8 as a percent.

    asked by sw
  65. chemistry

    what feature of rutherford's model has appeared in all later models of atom? Is it that electrons are outside, or does it have to do with alpha/gamma rays?

    asked by Anonymous
  66. AE

    Answer the following: Taking either the constructivist theory of education or the behaviorist theory of education, write a 700-1,050 word paper in which you describe your ideals for effective classroom management. In separate paragraphs describe your

    asked by scooby91320002
  67. U.S HIstory AP

    I have to make a DBQ for my class on women's changing roles in america in the era of 1877-1945. I can't find any documents that i can put in it. Please help me. This is due tuesday. Im so desperate! :(

    asked by Allison.
  68. home economics

    Suppose that 200 gallons of gasoline are demanded at a particular price. If the price drops by 1 percent, the quantity demanded of gasoline increases to 200.5 gallon. which of the following statement is true? a) The elasticity of demand is equal to 0.5 b)

    asked by Lupe
  69. writing

    • Answer the following in regard to each of the two examples (this could be either two ads from one of links above, or one of the ads and the CNN news source) in a 100- to 200-word response:

    asked by Anonymous
  70. AE

    need infor on teacher discipline strategies plz

    asked by scooby91320002
  71. Socials Studies

    What are the correct answers for this? 1. The________succeeded Elizabeth I and dislike the Democratic traditions of England. a.)Stuarts b.)Reids c.)Tudors d.)Cromwells I choose 'a' 2. People were angry with James I because he_________ a.)neglected the army

    asked by John
  72. geogrophy

    Plz define the Gadani beach in paragraph minimum 100 words plz i got marks.

    asked by Raghad
  73. English

    What it the Satire in the piece??? is it that they are making fun of the government by pointing out that they take advantage of us? ODE TO CREDIT CARD DEBT Nothing matches the excitement of finding a credit card application in the mail, its majestic,

    asked by Soraya HELP!!!
  74. Geology

    I know that the earth quakes and shakes during a earthquake, but I do not understand how it moves. Can somebody explain how it moves?

    asked by A.W.
  75. crt 205

    Final Project

    asked by Jim
  76. History

    Why do people go to war to expand their national boundaries?

    asked by Kara
  77. math

    Determine whether the pair of fractions is proportional: 4/13=8/26

    asked by sw
  78. math

    On the blueprint of Lauren's new office building, the scale is 3 in. equals 8 ft. What will be the actual length of Lauren's office if it measures 6 in. long on the blueprint?

    asked by sw
  79. History

    Why have Americans decided to go war to win their independence?

    asked by Kara
  80. History

    Why have Americans gone to war to define their interests around the globe?

    asked by Kara
  81. home economics

    If the price elasticity is equal to 2, a 1percent increase in price will cause the quantity demanded to........from 200units to .......units

    asked by Lupe
  82. World Gepgraphy

    What is cultural and political cleansing?

    asked by Sofia
  83. Middle Eastern studies

    "What is the most significant cause of the rise of Islamic Terrorism in some Middle-E. countries?"? Its an essay in my opinion based off the research I've done. I'm supposed to have one major reason which I have, and maybe one or two other reasons. My

    asked by Christophe
  84. Math

    what are the properties of exponential function?

    asked by alex
  85. English

    1. I send a message with my cell phone. 2. I send a message on my cell phone. (Which one is correct?)

    asked by John
  86. lang arts

    if u mix PRIDE around and add a letter what kind of animal will you get?

    asked by Delaney
  87. Physics

    Two rollerbladers throw a frisbie back and forth on a frictionless surface. Which does not change? a. Momentum of an individual rollerblader b. Momentum of the frisbie c. Momentum of the system consisting of the frisbie and rollerbladers throwing the ball

    asked by Jacob
  88. English

    1. I don't need the money at the moment. 2. He felt refreshed at the moment. 3. Can you lend me some money at the moment? (Are all correct? What is the meaning of 'at the moment'?)

    asked by John
  89. Business comunication

    If you must persuade your audience to take some action, aren't you being manipulative and unethical? Explain.

    asked by Anonymous
  90. Physcis

    Two trucks approach at the same speed and undergo an inelastic collision. Their total momentum? a. becomes zero b. remains unchanged c. doubles d. I need to know the masses of the two cars I say B.

    asked by Jacob
  91. business communications.

    If you must persuade your audience to take some action, aren't you being manipulative and unethical? Explain.

    asked by Anonymous
  92. English3

    in the Great Gatsby what does summer symbolize

    asked by renee
  93. chemistry

    why does evaporation cause cooling?

    asked by Ashima
  94. Please proofread

    Please look over my report and let me know if their are any mistakes and if it is a good one. THanx Abraham Lincon was born in 1809. He was the 16th president. He was a good and nice president. He led us through a big,bad,and super scary war. He had four

    asked by Ella
  95. History

    How would businesses negatively be affected by global peace?

    asked by Kara
  96. Government

    If government cannot manage the economy successfully, should the government stay out of it or should the economy just fail. please answer it in 100 words.

    asked by Jon
  97. math

    Given X={a,b,c,d,e} and Y={a.c.e}, find the compliment of Y in X 1 {b,d} 2 {a,b,c,d,e} 3 {a,c,e} 4 {}

    asked by Anonymous
  98. History

    What is one more negative benefit of global peace and economics? So far I have used, job uncertainty, resources being lessened, companies being affected

    asked by Kara
  99. US history

    How many times has the U.S. used its power of veto in United Nations? Also, how many of those were in defense of Israel? I know its been 41 times from 1972-2006, though I don't know if there are more.

    asked by Jean Paul
  100. History

    What are two more positive benefits of economics of war? So far I have used technolgy advancement & more jobs become available.

    asked by Kara
  101. English (SATIRE)

    How does this one show SATIRE??? i have an idea but im not 100% sure its right. WHY GOLF IS GREAT What is the best sport? It's one of the great debates in our country, one which you can hear argued at your local bastion of culture we commonly call the

    asked by Soraya HELP!!!
  102. math

    can i get a link containing a list of the theorems and postulates of a 2 column geometry proof?

    asked by patrick
  103. Math

    How do i find area How Do I Find Area???

    asked by Ashley
  104. Meaning

    What does this mean? artificial intelligence could enable radical shifts in the balance of power.

    asked by Justin
  105. language arts

    I have to rewrite a parragraph in spatial order. what does that mean?

    asked by faith
  106. social studies

    an example of atype of goverments which ruler of small groups.

    asked by billy