Questions Asked on
September 20, 2007

  1. physics

    A force vector F1 points due east and has a magnitude of 200 newtons. A second force F2 is added to F1. The resultant of the two vectors has a magnitude of 400 newtons and points along the east/west line. Find the magnitude and direction of F2. Note that

    asked by ajo
  2. Chemistry

    A piece of wood sinks in ethanol but floats in gasoline. Give a range of possible densities for the wood?

    asked by Charles
  3. Science

    How many chromosomes are in the original cell compared to those in the new cells formed by cell division? a.) the same amout b.) half as many c.) twice as many d.) four times as many

    asked by Brittany
  4. microeconomic

    12. In each of the following situations, explain how government intervention could improve society’s welfare by changing people’s incentives. In what sense is the market going wrong? a. Pollution from auto emissions has reached unhealthy levels. b.

    asked by dritan
  5. Social Studies

    Rewrite the Mayflower Compact in your own words. We whose names are underwritten, the loyal subjects of our dread Sovereign Lord King James, by the Grace of God of Great Britain, France and Ireland, King, Defender of the Faith, etc. Having undertaken, for

    asked by Sonic
  6. Organic Chemistry/Biology

    My text has a review of some chemistry before getting into the biology bit. I have come to a question "what are 3 characteristics/features of an organic compound." My book seems to only have the general they all have carbon. The rest goes into depth about

    asked by Lena
  7. Algebra

    Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type does she have

    asked by Gail
  8. Trig

    establish identity sec 0/1 + sec0 = 1 - cos0/sin^2 0

    asked by Kay
  9. French

    What is a good site for learning how to speek french for free?

    asked by Ali
  10. Physics

    a dentists drill starts from rest. after 5.39 seconds of constant angular accleration, it is rotating at a rate of 2.85E4 rpm. through what angle did it rotate in the process? (i just don't know what formula to use)

    asked by matt
  11. Math

    If a building 1 begins with four blocks and increases by three blocks each building, how many blocks will it take to make building 1,000

    asked by Gaby
  12. math

    how do you write an open statement involving an absolute value inequality when all you are given is the graph of the solution?

    asked by ed
  13. economics

    Suppose a person has a utility function U=YX. What is the minimum level of income required to get a utility of 20? Your answer should be a function of, among other things, Px and Py.

    asked by jon
  14. Science

    I need one example of a class one lever that is nothing like scissors (eg. pliers, wire cutters...) and has nothing to do with hammers. Thanks.

    asked by Lauren
  15. French for Mischa

    This is what would not post: PLURAL OF NOUNS Most French nouns, like most English nouns, form their plural by adding s to the singular: SINGULAR PLURAL le garçon, the boy les garçons, the boys lfélève, the pupil les élèves, the pupils la feuille,

    asked by SraJMcGin
  16. Managerial Economics

    Managerial Economics uses_____to help solve problems. a. mathematical programming b. Statistics c. decision sciences d. microeconomics e. all of the above

    asked by John
  17. managerial economics

    The principal-agent model of economics concentrates on_____ a. the threat from foreign competition b. the need to manage inventory more effectively c. double entry book keeping d. the potential costs of seperation of ownership control e. the time value of

    asked by John
  18. science

    Hey. I need two examples of screws (like the one from the six simple machines) and it can't be a screw, jar lid, or drill bit.

    asked by Liandra
  19. math


    asked by carissa
  20. Science

    What is in RNA, but not in DNA? a.) thymine b.) thyroid c.) adenine d.) uracil

    asked by Brittany
  21. Science

    If a diploid tomato cell has 24 chromsomes, how many chromosomes will the tomato's sex cells have? a.) 6 b.) 12 c.) 24 d.) 48

    asked by Brittany
  22. economics

    suppose a competitive market consists of identical firms with a constant long run marginal cost of $10. Suppose the demand curve is given by q=1000-p a)What are the price and quantity consumed in the long run competitive equilibrium? b)Suppose one new firm

    asked by michele
  23. math

    Rosita earns money by walking dogs after school and on weekends.She walks Madeline every other day,Buddy every fourth day,and Ernie every fifth day.Today she walked all three dogs.Which dogs will Rosita walk 62 days from today?

    asked by kapki
  24. math- please help!

    Please help with these 5 problems! I have the solutions but I don't understand how to get them! 1. Perform the indicated operations and simplify: [(2/x)-1]/(x^2 -4) 2. Subtract and simplify: [12/(x^2 -4)] - [(3-x)/(x^2 + 2x)] 3. Perform the indicated

    asked by anonymous
  25. english

    what is the subject of the sentence...Two lost species are the passenger pigeon and the carolina parakeet.

    asked by eri
  26. Trig

    Establish the identity: 1. sin0(cot0 + tan0) = sec0 2. cos0 +1/cos0 -1 = 1 + sec0/1 - sec0

    asked by Kay
  27. Trigonometry

    Establish the identity: (1 - cos^2 0)(1 + cot^2 0) = 1 No idea!

    asked by Urgh
  28. biology

    will the impact of removing all the organisms in a trophic level be different for different levels?can the organisms of any trophic level be removed without causing any damage to the ecosystem?

    asked by beena
  29. science

    what are the problems caused by non-biodegradable waste that we generate?

    asked by beena
  30. chemistry

    "experiment: spectrophotometric determination of the acid dissociation constant of methyl red" 1. Why are matched cells used in the experiment? 2. Why is pH plotted against log([MR-]/[HMR])? 3. Why is it right that HMR has a pH equal to 2 and MR- to have a

    asked by smiley
  31. Science

    What is waste management?

    asked by lalith
  32. Algebra 1

    Rewrite the equation y = –3x + 5 as a function of x.

    asked by Cynthia
  33. Algebra 1

    The difference of two numbers is 20. The second is 4 less than 3 times the first. What are the two numbers

    asked by Anna
  34. French

    I have to fill out this chart, I want to know did i do it correctly, thanks. Etre: Tu es Aimer: Tu aimes Habiter: tu habites s'appeler: tu s'appelles Parler: Tu parles

    asked by Mischa
  35. Geography AS

    Why is the distribution of the worlds Population uneven? please could somebody point me in the right direction, it would be a big help. thank you!

    asked by Sam
  36. native american history

    Discuss the divisions between the traditionalists and moderate Indians from WWII on. Why does this war help to produce a sharp division between them? How did the actions of the government fully deepen it? Can someone help me break this question down and

    asked by elizabeth
  37. Accounting

    At December 31, 2007, before any year-end adjustments, Bollis Company's Prepaid Insurance account had a balance of $2,700. It was determined that $1,500 of the Prepaid Insurance had expired. The adjusted balance for Insurance Expense for the year would

    asked by jimmy
  38. health care and human services

    Why is it important for the policy for social security to have clear goals and objectives?

    asked by Anonymous
  39. english

    im in year 7 and i am needing help to wright a page a bout ourselfs and i am finding it hard could any one help me by giving me a some things that i could say or even wot 2 say thanx

    asked by baybee cc
  40. algebra question

    Give an example of a polynomial with degree 3 such that when factored, it contains the two factors (x+5) and (2x-1), i.e., the polynomial looks like (x+5) (2x -1) ( ? ). How many such polynomials you think there are?

    asked by Shawn H.
  41. algebra problem that is causing me headaches

    I have no real method for this problem other than trail and error and foil. I have come up with some amny variations until I am on my second sheet of paper! The closet I have gotten to factoring/solving this problem so far is.... #46.) -3t^3+3t^2-6t

    asked by Shawn H.
  42. Language

    Which would probably NOT be heard in a whole language classroom? 1."You can try those words on your own." 2."How do you think it is spelled?" 3."Copy these words from the board." 4."That's great! You spelled phone f-o-n. You heard all the sounds."

    asked by Anonymous
  43. French

    When I say I have one brother and he is 27 years old, do I say J'ai un le fr¨¨re or J'ai un fr¨¨re Il a vingt sept ans.

    asked by Mischa
  44. Science/Health

    I didn't really know which category to place this into- but I have a question hopefully someone can inform me a little. I have been visiting my mother in the nursing facility this week. The resident beside my mother has a pan full of charcoal that was

    asked by Anonymous
  45. math

    how do you make 16 2/3 into fraction?

    asked by megan
  46. math

    how do you make 16 2/3% into fraction?

    asked by megan
  47. Physics

    Michael Jordan's vertical leap is approximately 48in(1.2m). Keeping in mind gravitational acceleration of 9.8m/s2. What is his leap time?

    asked by Neshia
  48. Biology

    The base sequence of the gene coding for a short polypeptide is CTACGCTAGGCATTAGACTGGTA. What would be the base sequence of the mRNA transcribed from this gene?

    asked by Cindy
  49. math grade 3

    need to draw data sets to find the mean. I know how to use this putting the numbers in order from least to greatest, but how do I draw this?

    asked by Joel
  50. physics

    the tub of a clothes washer goes into its spin-dry cycle starting from rest and reaches an angular speed of 6.50 rev/s in 7.85 seconds. at this point, the person doing the laundry opens the lid, and a safety switch turns off the washer. the tub then slows

    asked by matt
  51. Science

    What are 5 differences between Vertebrates and Invertabrates

    asked by Ali
  52. Science

    What are some similaraties between Vertebrates and Invertabrates

    asked by Ali
  53. Biology

    What are needed for humans to be able to digest?

    asked by Olivia
  54. math

    The difference of two numbers is 9. The sum of 3 times the greater number and 4 more than the lesser number is 51. What are the two numbers? I do not get this question... I have tried many times, but can not get it.. please help! thank you.

    asked by Ellen
  55. english

    how do you know when to capitalize?

    asked by Jackson
  56. english

    when do you capitalize in the phrase plains of the west

    asked by Jackson
  57. Algebra 1

    What is rational and irrational?

    asked by Ashley
  58. marketing

    Hello i really need help for this 2 kestions, can someone help me what impact can a credit policy decision have on ROA and expected LTVA? What ipact can a co-op dollars have on the contribution income?

    asked by miaaa
  59. Ethic

    Business invest time to attract customers, but some customers are simply not worth having. So some business think that they should fire the customers they lose money on. -Is it acceptable to fire customers who cost you money? -Is it acceptable for the

    asked by Mark
  60. Elem. Ed.

    Please let me know if you agree with my answers to these two questions. 1.Hannah's mother said,"Hannah is such a "pencil-and-paper" kid." It is likely that Hannah: A. will be an artist. B. will learn to write,forming her letters perfectly. C. will be a

    asked by Anonymous
  61. caclc

    why does sinx/x=1

    asked by Anonymous
  62. Social Studes

    Why do you think the Pilgrim leaders thought they needed something like the Mayflower Compact?

    asked by Sonic
  63. Social Studes

    What different reasons might people have had for sailing to America with the Pilgrims?

    asked by Sonic
  64. Social Studies

    What sigificance did the Mayflower Compact have for American governmemt?

    asked by Sonic
  65. World History

    Rivers acted as a powerful restraining force, particularly on Sumerian political development. Discuss and explain this statement by making reference to the relationship between the physical environment and politics.

    asked by Deborah
  66. Math

    The registration code for a new softwear game you purchased consists of a string of 3 letters followed by 5 digits. How many different registration codes are possible? If you lost your registration code and had to quess, what is the probability that you

    asked by Aisha
  67. Math

    Your favorite CD consists of 12 songs. If you play the CD randoming on your CD player, how many play list are possible?

    asked by Aisha
  68. World Literature

    For an essay, I'm using the quote “One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them” (The Fellowship of the Ring, page#). I'm not sure what to put for the page number because the quote is in the

    asked by Kate
  69. Math

    Each division of the NBA HAS 7 teams. How many different division standings are possible at the end of the season?

    asked by Aisha
  70. Science

    How might the damming of a river affect an estuary at the river'smouth?

    asked by Korey
  71. science

    A liquid is usually _____ a gas. A denser than B less dense than C the same density as D lighter than

    asked by Alex

    Is it possible to obtain pure (200-proof) ethanol using fractional distillation from a fermentation mixture that contains equal amounts of water and ethanol? Explain your answer.

    asked by Delli
  73. pHYSICS

    Packages dropped by planes in the olden days didn't have onboard guidance or propulsion systems such as are found today. The path of the package was determined by the initial veloctiy (of the person that dropped that the package) and the acceleration due

    asked by McSmarty
  74. Chemistry

    would the density of a person be the same on the surface of earth and on the surface of the moon? explain?

    asked by Charles
  75. chemistry

    do you think that determining the volumes of your metal samples by measuring their dimensions and calculating would be more accurate or less accurate than determinging these volumes by water displacement?

    asked by Anonymous
  76. Chemistry

    A shiny gold colored car of metal weighting 57.3g has a volumes of 4.7cm^3. Is the bar of metal pure gold?

    asked by Charles
  77. pre-cal

    How do you work inverse functions alebraically?

    asked by chris
  78. HEALTH


    asked by Hannah
  79. Chemistry

    The density of water is 1.0 g/mL. How many deciliters of water will fill a 0.5-L bottle?

    asked by Charles
  80. algebra 2

    piecewise function : g(x)=/x/ +3 please help me solve this

    asked by melissa
  81. Calculus...

    How can I use the "angle addition formula" and the formula "limit of x approaching 0 of sin(x)" to show that the limit of x approaching 0 sin(a+x) = sin(a) for all a?

    asked by Shelli
  82. Beginning Chemistry

    I am really confused weith sig. figs. and it would really help if someone could check my answers. My answers are after each problem Determine the number of sig. figs. in the following (a)12.7040g - 6 (b)200.0 cm - 4 (c)276.2 tons - 4 (e)4.00 x 10^3 - 3

    asked by Sadie
  83. economics

    Suppose 15 peaches and 20 oranges need to be divided between fred and ethel. Fred's utility function is U=Max(#of peaches, #of oranges) ethels utility function is U=Max(2# peaches, # of oranges). Carefully draw a graph showing the set of Pareto efficient

    asked by jon