Questions Asked on
January 21, 2008

  1. physics

    Suppose you had two small boxes, each containing 1.0 g of protons. (a) If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light (and very long!) string, what would be the tension in the

    asked by Jen
  2. physics

    Two equal point charges of +3.00 * 10^ -6 C are placed 0.200 m apart. What are the magnitude and direction of the force each charge exerts on the other?

    asked by Jen
  3. Chemistry 232

    Why was the methylene chloride layer washed with sodium bicarbonate in the procedure for preparing camphor? is it to remove acid which was added in the starting process.

    asked by Sonam
  4. poem by E.E. Cummings

    Can someone help me figure out what the meaning of this poem is? It's called "in Just-" and it confuses me. in Just- spring when the world is mud- luscious the little lame balloonman whistles far and wee and eddieandbill come running from marbles and

    asked by Emily
  5. physics

    A negative charge of -0.550 uC exerts an upward 0.200 N force on an unknown charge 0.300 m directly below it. (a) what is the unknown charge (magnitude and sign)? (b) What are the magnitude and direction of the force that the unknown charge exerts on the

    asked by Jen
  6. physics

    Neurons are components of the nervous system of the body that transmit signals as electrical impulses travel along their length. These impulses propagate when charge suddenly rushes into and then out of a part of the neutron called an axon. Measurements

    asked by Jen
  7. College Physics

    A positively charged rubber rod is moved close to a neutral copper ball that is resting on a nonconducting sheet of plastic. a) Sketch the distribution of the charges on the ball. b) With the rod still close to the ball, a metal wire is briefly connected

    asked by Jen
  8. physics

    Two point charges are placed on the x axis as follows: Charge q1= +4.00 nC is located at x= 0.200 m, and charge q2= +5.00nC is at x= -0.300 m. What are the magnitude and direction of the net force exerted by these two charges on a negative point charge q3=

    asked by Jen
  9. College Physics

    Two iron spheres contain excess charge, one positive and the other negative. a) Show how the charges are arranged on these spheres if they are very far from each other. b) if the spheres are now brought close to each other, but do not touch, sketch how the

    asked by Jen
  10. math-need help

    A right rectangular tank with a 12 unit by 8 unit base is filled with water to a depth of 5 units. The water rises 1.5 units when a solid cube is completely submerged in the tank. In simplest radical form, the edge of the cube is k*cube root of w units.

    asked by jujube
  11. Algebra 2-Linear Programming

    A chauffer must decide between driving his client in the Rolls Royce or the Mercedes Benz. The Rolls Royce costs $1.75 per mile to operate and the Mercedes Benz costs $2.00 per mile to operate. The chauffer can charge $4.00 permile for the Rolls and $6.00

    asked by Chauncey
  12. Physics 204

    I have a few questions. 1.The coefficient of sliding friction between steel skate blades and ice is .05. How much force must be applied to a 150lb. skater to maintain a constant velocity? 2. If it takes a force of 6 pounds to cause a 24 pound box to slide

    asked by Charles
  13. College Physics

    During an electrical storm, clouds can build up very large amounts of charge, and this charge can induce charges on the earth's surface. Sketch the distribution of charges at the earth's surface in the vicinity of a cloud if the cloud is positively charged

    asked by Jen
  14. Physics

    an anchor shoots an arrow into a piece of wood. the arrow is traveling at 120 km/h when it strikes the wood. the arrow penetrates 3.8 cm into the wood before stopping. what is the average acceleration (in m/s^2) into the wood?

    asked by Fel
  15. pre calc

    The publisher of a magazine that has a circulation of 80,000 and sells for 1.6 a copy decides to raise the price due to distribution costs. By surveying the readers the publisher finds that the magazine will lose 10,000 readers for every .4 increase in

    asked by Kate
  16. Economics

    GNP accounts avoid double counting by including only the value of final goods services sold on the market. Should the measure of imports used in the GNP accounts therefore be defined to include only imports of final goods & services from abroad? What about

    asked by Ang
  17. AP Chem

    Use the following information to identify element A and compound B, then answer questions a and b. I'm so stuck on this problem and don't know where to begin. I need to have this problem done by Wednesday. PLEASE HELP!!! An empty glass container has a mass

    asked by John
  18. calculus

    how to take the integral of cos(square root of x) dx. need to use substitution and integration by parts but I don't know what to substitute

    asked by sarah
  19. science

    I have to list 3 examples of each galaxy (Spiral, Elliptical and Irregular). I have facts about each one but I can't find where they are located.

    asked by Callie
  20. books

    What is the main conflict in the novel The Witch of Blackbird Pond? What is the resolution?

    asked by Breanna
  21. US History

    Do you think that the Roosevelt Corollary to the Monroe Doctrine fundamentally altered the nature of the doctrine and the intentions of its origianl authors (Monroe and JQ Adams)? If so explain how. If not, explain how the doctrine and the corollary are

    asked by Amanda
  22. physics

    (a) What is the total negative charge, in coulombs, of all the electrons in a small 1.00 g sphere of carbon? One mole of C is 12.0 g, and each atom contains 6 protons and 6 electrons. (b) Suppose you could take out all the electrons and hold them in one

    asked by Jen
  23. studying

    I have to study for a HUGE science test tommorrow, but I don't know how to study! I've reviewed my notes, re-read the chapter in my book, and learned all the vocab, but I'm still a little shaky. I'm not sure how else to study, though, so if you have any

    asked by pinkpolkadots7
  24. Calculus

    Find the constant term in the expansion of [x + (3/x squared)]^9 Find the coefficient of (x)^4(y)^9 in the expansion of (x + (2)(y)^3)^7

    asked by Daisy
  25. Data managment math

    1:There are 7 seats in the family new van. if 4 of the 7 family members can drive,how many possible seating arrengements are there for a family trip in the van? 2:How many even five digit numbers can be formed using only the numbers through 1 and 7?

    asked by Samir
  26. physics

    (a) What is the total negative charge, in coulombs, of all the electrons in a small 1.00 g sphere of carbon? One mole of C is 12.0 g, and each atom contains 6 protons and 6 electrons. (b) Suppose you could take out all the electrons and hold them in one

    asked by j
  27. College Physics

    In ordinary laboratory circuits, charges uC (microcoulomb) and nC (nanocoulomb) range are common. How many excess electrons must you add to an object to give it a charge of (a) -2.50 uC (b) -2.50 nC.

    asked by Jen
  28. social studies/writing

    is this a good paragraph on the differences and similarities between the U.S. and Thailand??? When people hear the about the countries, United States and Thailand, the fact that they are in two different sides of the world is the first thing that comes to

    asked by Gabby
  29. algebra

    the basketball team is trying to raise $475 for new uniforms if they sell candy boxes for $2.75 a box how many boxes will they have to sell to raise $475?

    asked by lakeeta
  30. US History

    Why is it not true that the US remained isolated from world events in the late nineteenth century? Describe some specific instances of American involvement beyond its own shores between 1865 and 1900. I have two examples but i need a third. Immigration and

    asked by Amanda
  31. Biology

    Following my previous question: jiskha/display.cgi?id=1200944514 use the Galapagos Islands as an example try to produce an action plan of at least 5 points that could reduce the risk of manmade extinctions occurring in vulnerable habitats. Give a brief

    asked by Anonymous
  32. Science-Ecology

    Why are amphibians good indicators of a health of an ecosystem?

    asked by Hayley
  33. calculus

    Find the sum of the series: 10 + 14 + 18 + 22 +...+138 and 6-12+24-48+96-...+1536

    asked by Daisy
  34. Algebra

    I just need help with the number game part. I can't think of any kinds of games to come up with? Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. Did

    asked by Noah
  35. Sentence structure

    1)Voltaire presents his ideas of injustice through comedy by exaggerating the aristocrats’ life style. In this sentence do I include an "s" after style? Also, which is correct in this sentence, "life style" or "lifestyle". 2)Voltaire’s representation

    asked by Bizzy
  36. Algebra II

    I think I need to go backward for my answers. starting with c. As I am no good at math I have to guess I am wrong. Can I get some guidence on how to set up the problem? To estimate animal populations, biologists count the total number of animals in a small

    asked by Marysvoice
  37. algebra

    sally's print shop will print any image on a frisbee for a cost of $1.50 per frisbee and a one-time charge of $7. write an algebraic equation using c for cost and f for frisbees.

    asked by lakeeta
  38. Geometry

    Recal a graph, chart, or table that you used in previous courses to help present data more effectively. How did you create the graph, chart, or table? In what ways did creating the graph, chart, or table help convey your information?

    asked by greatdanelola
  39. english

    need help to write a descriptive paragraph on food

    asked by sydney
  40. algebra

    find slope of any parallel line through points (9,6) and (1,2)

    asked by beth
  41. chemistry

    Convert 385 mmHg into kPa and atms. What does this mean?

    asked by Anonymous
  42. Science-Ecology

    Why are food chains typically limited to 4 or 5 trophic levels?

    asked by Hayley
  43. AP Chemistry

    I need alot of help on this problem, it is due WEDNESDAY and I have no clue how to do it Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of

    asked by Eric
  44. astronomy

    Why is the sky blue?

    asked by Belinda
  45. Organic Chemistry

    This compound is characterized by ionic bonding between a group 1 metal cation and a tetrahedral anion. Write an appropriate Lewis structure for the anion and a specify a formal charge if there is one. NaBF4 I looked up the answer and I have a few

    asked by Aletha
  46. English

    What is the setting in the book the bad begging by lemony snicket

    asked by Alyssa
  47. compare and contrast

    i need help comparing and contrasting Maya Angelou and Charles Dickens' writing styles. more specifically from caged bird and great expectations...thanks

    asked by anonymous

    The base and height of an original rectangle are each increased by 15%. The area of the new rectangle is k/w times the area of the original rectangle. If k and w are relatively prime positive integers, find the value of k + w.

    asked by Jujube
  49. Books

    What is the climax in the novel The Witch of Blackbird Pond?

    asked by Breanna
  50. Calculus help!

    (1) A toy truck travels at a rate of 0.5t ft/sec after t seconds of travel (so after 6 seconds the truck is traveling 3 ft/sec). a) Graph the speed of the truck vs. time for 0

    asked by anonymous
  51. african american hist.

    how did europeans profited at the expense of African Americans during the era of the Atlantic slave trade?

    asked by mack
  52. Chemistry II

    asked by Sara
  53. u.s hist. 2

    what was the reconstruction policies regarding social, economic and political equality of african Americans up through and including the Plessy v. Ferguson case?

    asked by mack
  54. English

    what should you study for a english benchmark?

    asked by Trissy
  55. general chemistry

    one international mile is defined as exactly 607601155 ft, and a speed of 1 knot is defined as one international nautical mile per hour.What is the speed in meters per second of a boat traveling at a speed of 14.3 knot?

    asked by marinka
  56. Chemistry

    Can someone check to see if my answers look ok. For the following crystals, explain how their melting points are related to the bonding forces and the crystal structure: a)Copper,Cu Copper has metallic bonds between atoms. It can occur as isometric cubic

    asked by Nancy
  57. Algebra 1

    How to solve this elimination 3x + y = 20 x + y = 12

    asked by Brayan
  58. math PLEASE HELP

    1. A rhombus has a perimeter of 96, and the length of one of its diagonals is 32. The area of the circle inscribed in the rhombus can be expressed as k*pi/w where k and w are relatively prime positive integers. Find the value of k + w.

    asked by Jujube
  59. African Amer. Hist.

    I need websites on these: What was the slave ship capacity? Who was Ghana's King? Lexington and Concord What was Andrew Jackson's feelings toward black troops? Federalist and slave issues

    asked by Mack
  60. Math- Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a.Write an equation using only one variable

    asked by Micah
  61. Geography

    What government imposed barriers stop or hinder the export of automobiles?

    asked by Dean
  62. math

    A three person committee is formed with the following people to be considered: A, B, C, D, E. How many different three-person committees can be formed from these five? what is the best way to set up a diagram to answer this question? can you show how to do

    asked by chris
  63. african american hist.

    what year was back men able to vote?

    asked by mack
  64. african american hist.

    What was the role of the free black community in boston? What were the contributions of Peter Salem, Salem Poor, Prince Hall, Phillis Wheatley and Benjamin Banneker?

    asked by mack
  65. Geometry

    What was the percent increase in the population in South America from 1900 to 2000? 1900 - 38,000,000 1950 - 111,000,000 2000 - 515,000,000

    asked by greatdanelola
  66. Math

    2-4 paragraphs plus two graphs Details: Many different kinds of data can be modeled using polynomial functions. An example of a polynomial function would be gas mileage for an automobile. If we compare gas mileage at two different speeds, V1 and V2, the

    asked by Nathan
  67. english

    what is the conflict of The Bad Beginning by Lemony Snickett ? and where does the setting take place?

    asked by Renee
  68. alegebra

    which two equations represent perpendicular lines: y= 2x-9 y= 1/2x+9 y= -1/2x+9 y= 1/2-9

    asked by jason
  69. african american hist.

    What was a trade system?

    asked by mack
  70. writing

    How do you write a good conclusion to a biography about a classmate?

    asked by sarina
  71. chemistry

    How do atoms bond to form molecules?

    asked by janet
  72. Science-Ecology

    State at least two advantages and two disadvantages of a pesticide that is low in toxicity and breaks down quickly. Thanks!

    asked by Hayley
  73. cultural diversity

    were Irish Immigrants to United States faced with environmental justice issues, redlinig, affirmative action, dual labor market, institutional or reverse discrimination, and double jeopardy?

    asked by Barbara
  74. political science

    The Constitution specifies a 3/4 majority for which process?

    asked by Lindsey
  75. math

    express in terms of i, the roots of x/8 + 8/9x=0

    asked by maureen
  76. Calculus

    write in the form of logA: log2 + log12 3log5 + 2log3 1/4log81 log36 - log12

    asked by Daisy
  77. Calculus

    If A=125e^-kt and A=200 when t=3, find the value of k.

    asked by Daisy
  78. parent

    Outline the key considerations a parent should take into account when evaluating a childcare option.

    asked by Suzanne
  79. algebra

    your school district is considering a plan to rent rather than buy a new server for its computer network. a server rents for $2.50 per day with a $25 fee for insurance, let d represent the number of days and c the cost write an algebraic equation

    asked by lakeeta
  80. math

    Solve this : (8x^3 ) - (168x^2) + ( 864x) = 1120 please >>>>>>>>>> I need it >>> please

    asked by Robert
  81. advanced function

    Find an equation with the given form in each case below. y=sinè through(ð/2, 0)

    asked by mel
  82. Geography

    Vehicles equipped with high horsepower motor use more fuel than most motors. What does the federal government impose on these vehicles?

    asked by Dean
  83. Geometry

    A)What was the mean population of the six continents or land masses that were habitable in 2000? B) What was the mean population in 1950? C) What was the percent incease in the mean population from 1950 to 2000?

    asked by greatdanelola
  84. calculus -- PLEASE HELP!

    1. A car travels 20 mi/hr for 2 hours and then 30 mi/hr for 3 hours. a) For 0

    asked by anonymous
  85. lit

    For my existentialism project(I have to create a work of art that reflects the absurdity of our meaningless universe, or our reaction to it (pick from the six existentialism themes), I drew the three people fighting, trying to go through a doorway (there

    asked by tim
  86. Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a. Write an equation using only one

    asked by Micah
  87. Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a.Write an equation using only one variable

    asked by Micah
  88. Calculus

    Simplify: a. (5x^2)^3 x (x/4)^2 x (8/25x^5) b. fifth root of a^3 x square root of a^5

    asked by Daisy
  89. Legal and Ethicsl Issues in HHS

    I am suppose to list examples of tangible and intangible forms of an organizational culture. I have got examples for tangible such as rituals, shared values, heroes, and heroines, ceremonies, stories, cultural network, physical impression, language,

    asked by Jess
  90. Biology/English

    Tourism, over-population and overfishing have become the blight of the Galapagos Islands that inspired Darwin. Now the UN is sounding the alarm. The threat is growing to the cradle of evolution. Crucial talks take place today over the increasingly

    asked by Don't matter
  91. appliances

    the difference between a nail and a screw

    asked by Yosimitee
  92. English

    What is a root? and please another my other question...thank you

    asked by Trissy
  93. african american hist.

    what were the origins of the indentured system? how did it evolve into plantation slavery?

    asked by mack
  94. Philosophy

    Write an informative 700-1050 word letter in the persona of one Eastern philosopher to one of his pupils. In the letter, describe your chosen philosopher's viewpoints concerning one of his philosophies. f needed, cite secondary sources according to APA

    asked by greatdanelola
  95. Algebra

    Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test. a. Write an expression that gives the total cost to test x

    asked by Micah
  96. physics

    A rod is nailed (flexibly) to a wall at one end. The other end is held up from letting the rod swing by a thread connected to the ceiling. The rod has mass M and length l. The moment of inertia is (Ml^2)/3. Determine the magnitude and direction of the

    asked by Hannah
  97. science

    Hi. Which of the following are legumes? a-peas, beans, alfalfa b-carrots, potatoes, beets c-peas, spinach, rhubarb d-celery, carrots, onions Thanks!

    asked by Ginger
  98. literture

    kestrel for a knave

    asked by natasha
  99. u.s hist. 2

    what were all the circumstances and events leading up to the development og the Open Door Policy?

    asked by mack
  100. u.s hist. 2

    what were the political and social changes made by the Progressives?

    asked by mack
  101. science

    which part of a atom is involved in forming chemical bonds?

    asked by jeannie
  102. Philosophy

    Write a 350-700 word response, in which you choose two or three Eastern philosophies and describe how they compare. Take sides, determine which philosophies are most persuasive, and explain why.

    asked by greatdanelola
  103. cultural diversity

    did Irish immigrants face glass ceiling, glass walls or glass escalator in the United States?

    asked by Barbara
  104. Physics 204

    If there is a 23lb. block on a plank and the static friction is .6 and the sliding friction is .35. What angle must the plank be raised to just allow the box to slide?

    asked by Charles
  105. algebra

    write an equation for (-5) and y-intercept (0,5)

    asked by jason
  106. Pigskin

    Dude where can I get a Pigskin Worksheet for the Philadelphia and Boston thing?

    asked by shakira
  107. English

    I had to place these statements in the Fallacy Types I thought they belonged in. Did I do this right or am I completely wrong here? Fallacies are confusing.Thanks Everyone Ad hominem/genetic 7. I don’t care if she is the top psychiatrist in the state!

    asked by Misty
  108. advanced functions

    Find an equation with the given form in each case below. y=sin through(Ï/2, 0)

    asked by Mel
  109. Work Experience

    To do work experience, do you have to be a certain age? Any sites anyone could recommend?

    asked by Anonymous