Questions Asked on
September 18, 2009

  1. physics

    The question is a child slides down a slide with a 28 degree incline and at the bottom her speed is precisely half what it would have been if the slide had been frictionless. Calculate the coefficient of the kinetic friction between the slide and the

    asked by perry
  2. chemistry

    Potassium perchlorate has a lattice energy of -599 kj/mol and a heat of hydration of -548 kj/mol. Find the heat of solution for potassium perchlorate when 10.6 g of potassium perchlorate is dissolved with enough water to make 102.7 ml of solution.

    asked by ella
  3. physics

    A helicopter is flying in a straight line over a level field at a constant speed of 6.2 m/s and at a constant altitude of 11.4 m. A package is ejected horizontally from the helicopter with an initial velocity of 12.0 m/s relative to the helicopter, and in

    asked by Anonymous
  4. math

    a basketball player completed 42.3% of his field goals in the most recent season. He made 289 field goals. how many did he attempt?

    asked by scooby9132002
  5. pre-calculus

    An open box is made from a square piece of material 36 inches on a side by cutting equal squares from the corners and turning up the sides. Use your calculator to find the maximum volume this box can hold. I got the equation 4x^3-36x^2+1296x = V But when I

    asked by perry
  6. microeconomics

    Earth Movers and Shakers operates 3 iron ore mines. This table shows their daily production rates given the number of miners at each mine. All of the miners work for the same wage. mine-----------tons---- # of miners mother lode------100-------25 scraping

    asked by haley
  7. physics

    How much work is done when 30.0kg crate is lifted 15.0m?

    asked by Anonymous
  8. ap calculus

    The height s of a ball, in feet, thrown with an initial velocity of 112 feet per second from an initial height of 6 feet is given as a function of time t (in seconds) by s(t)=-16t^2+112t+20. 1. What is the maximum height of the ball? 2. At what time does

    asked by muffy
  9. 5th grade

    Dreamy Ice-cream Company sells a single-scoop sundae for $1.25. Each additional scoop costs $1.25. There is a fixed price for 0.50cents for extra topping on all sundaes. I am supposed to make a table to show the prices of the first 4 sizes of sundaes with

    asked by Brooke
  10. Physics

    A square plate of copper with 50 cm sides has no net charge and is placed in a region of uniform electric field of 80.0 kN/C directed perpendicular to the plate. Find (a) thr charge density at each face of the plate and (b) the total charge on each face.

    asked by sandhu
  11. biology

    A viral DNA is analyzed and found to have the following base composition, in mole percent: A= 32, G = 16, T = 40, C = 12. What can you immediately conclude about this DNA?

    asked by Jessie
  12. child day care manegment

    i was wondering if you have the answers to Penn Foster's child day care management course? i need them to review my daughter's answers before submitting the tests.

    asked by deanna
  13. Statistics

    A tire manufacturer wishes to set a minimum mileage guarantee on a new set of tires. The mean is 67,900 with a standard deviation of 2,050. The manufacturer wants to set a minimum guaranteed mileage so that no more than 4% of the tires will have to be

    asked by Pat
  14. physics

    Motion in a Circle A particle P travels with constant speed in a circle of radius 5.6 m and completes one revolution in 36.0 s. The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 3.6 s and t

    asked by AK
  15. hum205

    Islamic architecture is built around the life of? a.Al-Khwaizmi, the greatest Muslim scholar. b.Muhammad, an Islamic prophet. c.Rabia Al-Adawiyya, the most prominent shaykha. d.Avicenna, a revered doctor and philosopher.

    asked by bella
  16. math

    At the "Neverlate" railroad station there are two tracks, A and B, both going to the city. At 7 A.M. a train leaves on each track, at the same time for the city. After that, the trains on track A leave every 8 minutes abd those on track B leave every 9

    asked by ladoo
  17. college physcial science

    an 8 kg ball rolling at 2m/s bumps into a pillow and stops in 0.5s. Show that the force exerted by the pillow is 32N. How mych force does the ball exert on the pillow?

    asked by Sandi
  18. math

    an employee's new salary is $27,195 after getting a 5% raise. what was the salary before the increase pay? a basketball player completed 43.6% of his field goals in the most recent season. he made 285 field goal. how many did he attempt?

    asked by scooby9132002
  19. English

    Would you let me know good websites wher I can watch educational videos for free? Thank you.

    asked by Tom
  20. Food and Nutrition

    Six food groups in the caribbean please

    asked by Lucy
  21. 9th grade

    What are the two main forms of Christianity?

    asked by Anonymous
  22. Organic Chemistry

    Draw the most important resonance contributor of the following structure? I'm confused on this one o / \ double bond -> \\ / - CH+

    asked by Kyle
  23. microeconomics

    In general, it is true that a more specialization is always better. b less specialization is always better. c specialization imposes costs as well as benefits. d more specialization is always worse.

    asked by haley
  24. English

    How do the characters, plot, and theme of The Great Gatsby refute the statement that "the Jazz-Age society was a bankrupt world, devoid of morality, and plagued by a crisis of character"? Use specific details and lines from the novel to support your view.

    asked by Stephanie
  25. 11th grade Biology

    I have three questions that I can't find anywhere. 19) Organisms that are at the greatest risk when the dynamic equilibrium is upset would be the: A. Organisms at the top of the evolutionary tree B. Generalists C. Specialists D. Invertebrates E. All of the

    asked by Alicia
  26. MATH

    Determine the x-intercepts for y = x^3 + 4x^2 - 4x - 16 and for y = 2x^4 - 5x^2

    asked by Frank
  27. biology

    A viral DNA is analyzed and found to have the following base composition, in mole percent: A= 32, G = 16, T = 40, C = 12. What can you immediately conclude about this DNA?

    asked by Jessie
  28. International Business

    What is a tier-2 company?

    asked by Chris
  29. Business

    You have just started work for a small company, FitCo, that develops private fitness clubs in small towns. FitCo buys or leases a local hotel or motel, then renovates to provide a gym, swimming pool, sauna, Jacuzzi, and a small café where patrons can buy

    asked by Sharon
  30. physics

    A car is driven east for a distance of 42 km, then north for 25 km, and then in a direction 31° east of north for 26 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's

    asked by blah
  31. gr.12 biology

    compare and contrast the characteristics of soluble and insoluble molecules.

    asked by henretta
  32. Math

    Did I do this problem correctly? Solve the following system by first handling the equation of the two lines: x=(0, 2) y=(-2, 1) x=(0, -1) y=(-3, -2) Equation 1: y= -x1 Equation 2: y=4x/3+2T Is this the correct answer?

    asked by B.B.
  33. math

    please check my answers 1.which is smallest 5/8,3/4,9/16,7/8 =9/16 2.subtract 6 3/10-4 11/15=1 17/30 3.estimate 6 1/8* 7 4/5=48 4.lcm of 20,32=160 jon spent 1/3 of his study time doing math and 2/7 preparing for history exam. what fraction of his study

    asked by p
  34. Physics

    I gues I'm looking at this the wrong way i do not understand the work you do to get to the answer Question: Find the air velocity of a plane that must have a realtive ground velocity of 250.0 h^-1 km norht if it encounters a wind pushing it toward the

    asked by Physics
  35. MATHS

    Could you please explain the question below? In the Logan family, each daughterhas the same number of sisters as she has brothers. The daughters, incidentally, are all older than the sons. How many sons and how many daughters in the Logan family? Thank

    asked by MILDRED
  36. math

    rewrite the division into a multiplication 9y+14/66

    asked by Anonymous
  37. Biology

    How do you measure starch on a food label?

    asked by Kelly
  38. math

    Barbara delivered newspapers to each house on her side of the street. The house numbers on her side of the street begin with the number 705 and each increase by 6. The last house number was the largest possible number not over 799. How many papers did

    asked by ladoo
  39. chemistry

    What is the molarity of a 250ml solution containing 16g of sulfur?

    asked by troy
  40. science

    A helicopter is ascending vertically with a speed of 4.00 m/s. At a height of 185 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?

    asked by john
  41. college physics

    the question is that what happened when the ozone layer becomes destroyed?

    asked by neha
  42. Home economics

    What 2 units measure energy ?

    asked by Leagh
  43. science

    beavers built a dam in a river causing an area to flood. the trees rotted and died and fell into the water. the trees in the water created a bog mat, then someother type of grass things fell to the bottom of the river which caused moss and in the end the

    asked by biggie
  44. math last and final one!

    -4x-27= -28 1/3

    asked by scooby9132002
  45. Cost accounting

    Cost terminology and cost behaviors and exercises solution

    asked by Danny
  46. FINANCE

    Determine the revenue variance from Arcadia Hospital’s 2005 budget

    asked by DENISE
  47. gr.12 biology

    What characteristics are typical of molecules that are gases at room temperature?

    asked by henretta
  48. chemistry

    Stoichiometry 0.083grams of lead nitrate, Pb(NO3)2, in solutions mixed with 0.300g of sodium iodide in solution. This results in the formation of a yellow precipitate of lead iodide. Calculate the weight of the precipitate.

    asked by Anonymous
  49. math

    factor: 1)x^2+x-6 2)x^2+5x+6 3)x^2+6x+8

    asked by anonymous
  50. reading

    what does head mean

    asked by adam
  51. math

    Is there an easy way to tell what graph I should use for questions like this? The following is a list of product manufacturing levels for the 50 states in 2004 ($ millions): 76, 5, 42, 55, 388, 34, 45, 17, 84, 131, 5, 17, 210, 184, 79, 56, 97, 124, 14, 36,

    asked by Blake
  52. math

    please check these 1.kristi jogged for 3/5 of an hour, swam 1/2 of an hour, rode her bike for 1/4 hr. how long did she exercise/=1 17/20 2.victor owned 5/6 of a family buisness, he sold 2/7 of the buisness,what portion doe she still own?=23/42 3.subtract

    asked by p
  53. HUMAN RESOURCE MANAGEMENT

    Describe in one or two sentences how you will access job analysis and job description information for your selected position. i am doing it on teachers, elementary school. would it be ok to write about the tasks, knowledge, skills, abilities, intrests, and

    asked by scooby9132002
  54. pre-calculus

    Determine the center and the radius of the following circle: x^2+y^2+8x-2y=8 so I figured I'd use completing the square after putting it in standard form: (x^2+8x)+(y^2-2y)=8 I'm not sure where to go from here.

    asked by muffy
  55. Physics

    What does the area under a velocity vs. time graph represent??

    asked by Layla
  56. social studies

    my daghter is in 4th grade and has a test on universal address and she has to study words for it and i don't know how to help cause i don't unterstand how she is going to be tested

    asked by kim
  57. HRM can u tell me if i am correct

    Describe in one or two sentences how you will access job analysis and job description information for your selected position. mine is an elementary school teacher. Would it be ok to write about the tasks, knowledge, skills, abilities, interests, and work

    asked by scooby9132002
  58. accounting

    A stock is quoted at $1,180. The $1,000 par value bond pays 14% interest, and it has 25 years remaining until maturity. The current yield to maturity on similar bonds is 12%. Compute the new price of the bond and comment on whether you think it is

    asked by Linda
  59. thank you

    thanks for helping me Ms.Sue! lol!

    asked by Danielle
  60. 6th grade

    What is 5 degree difference called? The latitude and long...

    asked by Kaite
  61. ENGLISH

    PLEASE ADVISE WHAT IS " THE CITY COUNCIL SPEAKER". THANKS.

    asked by ohwoo
  62. organisation,environment,competitiveness

    about organisation

    asked by ankur
  63. Business

    Is it okay to sell a product to a business at wholesale price and then also charge a Consignment fee after product is sold?

    asked by Bryan
  64. home economics

    What substances keep the body working ?

    asked by Leagh
  65. Home economics

    Why does our body need energy . 4 answers

    asked by Leagh
  66. psychology

    why is cognition and behavior important in the learning process?

    asked by Debra
  67. math

    what is 55% of 860?

    asked by scooby9132002
  68. science

    do lower motor neurons make synaptic connections with all fibers in a skeletal muscle?

    asked by Dee
  69. Physics

    An athlete wants to complete the 4000 m run in 12.0 minutes. After exactly 10.0 minutes of running at a constant speed, she still has 800 m to go. If she then accelerates to 4.0 m/s^2, how much longer will it take her to complete the race?

    asked by Anonymous
  70. medical terminology

    How can eliminating abbreviations reduce erros in medical field

    asked by robin
  71. International Business

    Hi, I need help researching on if, and why Canada is at a competitive disadvantage compared to other countries when exporting the plastics that we(Canada) produce to other countries. I can't seem to find any info on this, is it because Canada is not at all

    asked by Chris
  72. history

    I can not find anything on the repercussions of Western expansion after 1800. Can someone please help me.Thanks

    asked by Sueann
  73. Math

    I am confused with this problem could someone please explain? Taxicab Distances Problem. Imagine that the grid lines on a coordinate grid are streets and that the distance between two points must be measured by the number of "blocks" a taxicab would have

    asked by B.B.
  74. English

    1. Australia is much larger than England and Korea. 2. Australia is much larger than England or Korea. 3. Australia is much larger than both England and Korea. (What is the meaning of #1? Does #1 mean #2 or #3?)

    asked by Tom
  75. social studies

    can any one tell me about the miccosukee(?) tribe(?)

    asked by help me!
  76. economics

    What are the basic tools for economic analysis ?

    asked by cycy
  77. social studies

    can any one give me pictures about the miccosukee(?) tribe(?)

    asked by dert6
  78. health

    CheckPoint: Approaches to Valuation „h Resource: Appendix C „h Due Date: Day 5 [Individual forum] „h Review the valuation choices presented in Ch. 6. „h Complete Appendix C, parts I and II. „h Post as an attachment.

    asked by Anonymous
  79. education

    definition of stereotype

    asked by stah
  80. Language Arts (2nd Grade)

    Question: Name 10 Community Things You Can Do To Help The Earth. I Cant Think of Any!! Help

    asked by Ella
  81. Quantitative Methods

    I am trying to use the Goal Seek Method in Microsoft Excel but i keep getting a message that says "Cell must contain a value". Since the cell does contain a value what could be the error.

    asked by Sandra
  82. Math

    I am stumped on this problem can someone please explain? Find the distance between the given points (-3, -7) and (-4, 15). Thanks so much.

    asked by B.B.
  83. history

    please give me the american technologies and he pictures of old techologies

    asked by brenda
  84. ethics

    what changes has the US made for Muslims and Arabs?

    asked by no one
  85. phsyics

    What is the significance of the sign of the velocity (whether is + or -)?

    asked by Mya
  86. marketing

    200-300 word response to the Marketing Concepts: Discussing Choices and Ethical Issues, question #6 found on p 532 of the text.

    asked by Destine 4 Success
  87. math

    How do you find the percent of a discount! From the subject sales tax and discount.

    asked by tinker
  88. geography

    What landforms help the movement of information and people of the country in South America called Paraguay?

    asked by Danielle
  89. hum205

    how does the sacred cow influence the arts?

    asked by iii
  90. Science

    can someone explain how time zones are determined? please help and thank you

    asked by Anomynous
  91. hum205

    One of the great intellectual contributions that came from early Muslim scholars is,

    asked by bella
  92. biology

    what is genus taxa?

    asked by kerrrri
  93. Science

    i need help please can someone eplain to me why in any given time zone it gets dark a little earlier on the eastern side than on th ewestern side. please help and thank you

    asked by Anonynouss
  94. math

    what is the rule for use of letters in place of numbers

    asked by vinay
  95. Math

    I am stumped could someone please explain this problem? Give the solutions to the following quadratic equation by examining the graph of the related quadratic function: Graph: y=x^2+2x-15 Equation: x^2+2x-15=0 Thanks so much.

    asked by B.B.