Questions Asked on
February 14, 2008

  1. physics- check

    1. three point charges, q1, q2, q3, lie along the x-axis at x = 0,3,5, respectively. Calculate the magnitude and direction of the net electric force on q1 if q1 = +6 x 10^-6 C, q2 = +1.5 X 10^-6 C and q3 = -2.0 x 10^-6 C. my answre is 46.8 N to the right.

    asked by todi
  2. physics #22

    A length of wire is bent into a closed loop and a magnet is plunged into it, inducing a voltage and,consequently, a current in the wire. A second lenghtof wire, twice as long, is bent into two loops of wire, and a magnet is similarly plunged into it. Twice

    asked by tina
  3. Physics

    At time t = 0s, a puck is sliding on a horizontal table with a velocity 3.00 m/s, 65.0 above the +x axis. As the puck slides, a constant acceleration acts on it that was the following components: ax = 0.460m/s2 and ay = 0.980m/s2. what is the velocity of

    asked by Lauren
  4. Chem II

    What is the vapor pressure at 23 degrees C of a solution of 1.20 g of naphthalene, C10H8, in 25.6 g of benzene, C6H6? The vapor pressure of pure benzene at 23 degrees C is 86.0 mmHg; the vapor pressure of naphthalene can be neglected. Calcluate the vapor

    asked by Ken
  5. physics prob.

    An ideal transformer has 50 turns in its primary coil and 250 turns in its secondary coil. 12 V is connected to the primary. a)find the voltage across the secondary coil. b) find the current in a 10-ohms device connected to the secondary. c) find the power

    asked by sam
  6. math

    what catastrophe makes your kitten happy?

    asked by some
  7. Math

    The The speed of a passenger train is 12 mph faster then the speed of a freight train. The passenger train travels 270 miles in the same time it takes the freight train to travel 210 miles. Find the speed of each train.

    asked by Debbie
  8. Math

    A volmeter's pointer is 6 centimeters in length. Find an angle through which it rotates when it moves 2.5 centimeters on the scale.

    asked by Danielle
  9. chemistry

    A backpacker carries 2.5 L of white gas as fuel for her stove. How many pounds does the fuel add to her load? Assume the density of white gas to be 0.79 g/cm^3.

    asked by Kate
  10. physics prob.

    Neon signs require about 12000V for their operation. The primary operates from 120-V lines. a)What is the ratio of the number of loops in the secondary to the number of loops in the primary? b) What is the ratio of the power delivered to the secondary coil

    asked by sam

    In 1945, at the end of world was II Japan was in economic ruin. Today it rivals in the industrial strength of the united states. Arecent newspaper article compared the employment attitudes of north american and japaneese auto workers. The article suggested

    asked by alyssa
  12. Chemistry

    The theoritical yeild of a reaction that gives off nitrogen trifluoride gas is 844 mL at STP. What total volume of NF3 plus water vapor will be collected over water at 25° C and a total pressure of 1.017 atm?

    asked by Katie
  13. why doesn't anybody ever help me.

    1. three point charges, q1, q2, q3, lie along the x-axis at x = 0,3,5, respectively. Calculate the magnitude and direction of the net electric force on q1 if q1 = +6 x 10^-6 C, q2 = +1.5 X 10^-6 C and q3 = -2.0 x 10^-6 C. my answre is 46.8 N to the right.

    asked by todi
  14. Calculus I

    A tank in the shape of an inverted right circular cone has height $ 10$ meters and radius $ 8$ meters. It is filled with $ 6$ meters of hot chocolate. Find the work required to empty the tank by pumping the hot chocolate over the top of the tank. Note: the

    asked by Jeff
  15. Physics

    In this lab we did, we measured the angles of light that came through a piece of this special plastic. We had to find out the index of refraction for each of the angles of incidence in two different cases. The question asks "Is there a good agreement

    asked by Emily
  16. Math

    Ok, so my math teacher didn't tell us ways to do this faster, and it's late enough as it is so I don't want to be up all night doing homework. D; *Note: A permutation is where the order matters. A combination is where it doesn't. Find the number of

    asked by Who cares?
  17. physics#36

    Can an efficient transformer step up energy? Defend your answer.

    asked by tina
  18. alg 2

    write an exponential function whose graph passes throught the given points... (0,3)and (1,15)...(0,-5)and(-3,-135)...(0,-0.3)and(5,-9.6)

    asked by cal
  19. human health

    find at least three examples of mission statements for human services organizations. show how each one of the mission statements does or does not meet the requirements of a good mission statement. Then determine what other purpose or function the mission

    asked by Martha
  20. math- Triangle facts

    Explaining the isosceles theorem. Explain why the SAS Inequality theorem is also called the Hinge theorem. the steps for Indirect Proofs and using an indirect proof with an algebraic problem.

    asked by Rachel
  21. I dont think drawing a picture will help me drwls

    Which expression is equivalent to tan theta-sec theta/sin theta? A)-cot theta B)cot theta C)tan theta-cot theta D)tan theta-sec^2theta just tell me what I need to know to set it up

    asked by Jon
  22. physical science

    I have been working on my homework for science for a while now and I just wanted to see if I got any questions wrong. Can someone help me by checking what problems i got wrong. My parent told me that I have at least 5 problems wrong. Can someone point them

    asked by PETA

    Name at least three spin-off jobs that are directly related to the auto industry.

    asked by alyssa
  24. criminal justice

    Should an officer withhold information in a press release if that information could later affect the prosecution of a suspect? Is “setting the stage” for a press release professional or deceitful?

    asked by Pearl
  25. Chem II

    How do you figure freezing points and boiling points?

    asked by Ken
  26. Math

    I'm stuck on this 1 math problem. I've tried many ways to figure it out, but I can't. The problem is; 2(3x-5)>2x+6.

    asked by Janelle
  27. history

    we are doing this debate. i am on the history team. why is history more important than math, art (lit included), social sciences, natural sciences. and what are those subjects' flaws

    asked by meena
  28. trigonomitry

    A pole 7 meters long is placed against a wall at an angle of 45 degrees, what is the height of the wall

    asked by person
  29. science hw

    I cannot figure out this answer. It is confusing me a lot. I hate problems like this where all of the problems just switch beginnings and endings with each other. The combination of the sand and water makes for a ____________ _____________ because A)

    asked by josh
  30. Math

    There are no typos and no work b/c I don't know how to do them. Thanks. 1)Find cos theta if sin theta=3/5 and 90 degrees

    asked by Jon
  31. english

    31. China is .… considered as a communist country by a large number of people. (A) no longer (B) not longer (C) not more (D) no any longer i think B

    asked by mk-tintin
  32. math

    Hi, I'm 8 and I need help I have to draw 3 shapes with the same perimeter and i don't know how.

    asked by Chance
  33. Human services

    find at least three examples of mission statements for human services organizations. show how each one of the mission statements does or does not meet the requirements of a good mission statement. Then determine what other purpose or function the mission

    asked by Martha
  34. shakespeare

    ok so i have to summarize 3 important events in act 1 of romeo and Juliet by using a creative way like an email or article or letter, poem, essay, joke, ect. I have to have to be a certain person in the act and be talking to another person in the act. and

    asked by Anonymous
  35. Chemistry

    An air thermometer can be constructed by using a glass bubble attached to a piece of small-diamter glass tubing. The tubing contains a small amount of colored water that rises when the temperature increases and the trapped air expands. You want a 0.20 cm3

    asked by Katie
  36. science

    can someone put these 7 steps of the scientific method in order for me please. I have google searched these and stuff but it is really confusing me. I only thought there were like. a. run experiment b. conclusion c. compare results d. form a question e.

    asked by PETA
  37. college algebra

    if you have a problem where you are multiplying numbers with exponents (both positive and negative) and your answer ends up with a negative exponent what is the reason you make a fraction out of it and put it on the bottom as a positive? why cant you have

    asked by tara
  38. geoagraphy!!

    Wechicles equipped with a high horsepower motor use more fuel more than most motors. What does the federal gonverment impose on these vichiles

    asked by someone
  39. math

    Vanna Red sells the vowels a, e, i, o, and u each for a different price but less than $250. Consonants are free. You must pay separately for each occurrence of a vowel in a word. Audacious sells for $260, equivocations for $340, inimitable for $225,

    asked by Jas
  40. english

    11. “wry” (line 12) means: (A) wicked (B) dry (C) ironic (D) indifferent i don't know

    asked by mk-tintin
  41. english

    22. China is adopting …. (A) a driven-market economy. (B) a market-driven economy. (C) a driven-economic market. (D) an economically driven-market i think B

    asked by mk-tintin
  42. Chemistry HELP

    Not all enzymes have an optimum temp of around 40 degrees celcius. Find out where reactions involving enzymes: would take place at very high temperatures would take place at very low temperatures i've tried looking on the internet, but I get a lot of

    asked by Jess
  43. science

    do skeletal muscle cells have a lysosome, centrioles, cilia ? I have read a lot of website but these are not mentioned!

    asked by julie
  44. chemistry

    what are two regions make up all atoms?

    asked by JOSE
  45. geoagraphy!!!!!

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

    asked by someone
  46. Chemistry

    what is the approx. atomic weight for Boron? (to the nearest tenth)

    asked by Anna-Marie
  47. Physics

    In sunlight, which becomes warmer: reading glasses or dark sunglasses? i said reading glasses because the UV waves and infrared resonate on the glass, generating more heat. and dark sunglasses just absorb the heat and convert it into internal energy is

    asked by luu
  48. Chemistry

    My teacher provided info about a worksheet of problems. Special Heat of water: 4.184 Special Heat of Steam: 2.09 Special Heat of Ice: 1.8 Based on this info, and the notes we have taken on phase changes, we are supposed to find out how much energy is

    asked by Meg
  49. Science

    What is the equation for calculating final temperature when equal masses of water are mixed? What is the equation for calculating how much heat energy calories transferred to or from a mass of water?

    asked by Austin
  50. math

    if there are 4 pyramids and 1 cube on one side and 2 cubes on the other side f a scale how many pyramids balance 1 cube

    asked by kain
  51. Chemistry! Please Help!

    My teacher provided info about a worksheet of problems. Special Heat of water: 4.184 Special Heat of Steam: 2.09 Special Heat of Ice: 1.8 Based on this info, and the notes we have taken on phase changes, we are supposed to find out how much energy is

    asked by Meg
  52. English

    What is the tone of "Wuthering Heights" by Emily Bronte in the first chapter? What is the definition of wuthering?

    asked by Christian
  53. math

    {y-2}/(a^2-5a+6)=(a+1)/(a-3)-(a+2)/(a-2) How can I solve for y in terms of the other variables??? I tried many times, but I just get y=6,can't express y in terms of variables. Can anyone please correct me or teach me?THANKS A LOT!

    asked by Selina
  54. english

    12. “has trebled” (line 15) means: (A) is 3 times less important (B) is one third as important (C) has become 30 times more important (D) has increased threefold i think D

    asked by mk-tintin
  55. english

    19. He knew it before he …. (A) arrives. (B) arrived. (C) he would arrive. (D) he has arrived. i think B

    asked by mk-tintin
  56. english

    26. …. is becoming liberalised. (A) Chinese national discourse (B) China’s national discourse (C) The national Chinese discourse (D) The national China discourse i think A

    asked by mk-tintin
  57. math

    There are no typos and no work b/c I don't know how to do them. Thanks. 1)Find cos theta if sin theta=3/5 and 90 degrees

    asked by Jon
  58. Hum

    What are the historical figures and events of Judaism? what are the ethics and morality of Judaism?

    asked by Anonymous
  59. ecology

    What is an niche???

    asked by My-My

    For a lab, I have to find the experimental values of i (Van T'Hoff factor). so far this is what i have, but it's incorrect. could you please tell me what i'm doing wrong??? thanks. given info: the lab varied the concentration of Mg(NO3)2 the theoretical

    asked by Jonathan
  61. Economy

    I am having a hard time finding industry that is affected by the economy that would spark my interest can anyone suggest something

    asked by Lisa
  62. Geometry - Proofs

    Given: Line cd is the perdendicular bisector of line ab e is on line cd Prove EB=ea

    asked by Julie
  63. algebra 1

    ana bought 12 pieces of gum consisting of only red gum and white gums. The total cost was 1.29 the red gums each cost .03 more than each white gum and she bought fewer red gums than white gums. How many white gums did she buy?

    asked by angleica
  64. Chemistry

    why does the value of i (van t' hoff factor) change with regards to theoretical vs. experimental? i'm not quite sure what happens but i know it has to do with ions in the solution. could it be attractive forces between ions?

    asked by Jonathan
  65. physics#30

    Why dosen't a transformer work with direct current? why is ac required?

    asked by tina
  66. geography

    does anybody have any ideas on a good website or anything to help me make an outline of like three pages in my geography textbook? its ap and i don't understand it very well. I am supposed to outline the entire chapter and im confused.

    asked by Anonymous
  67. geography

    in the 1960's there were nine major auto makers. In 1990 the number rose to nineteen auto makers. Why did more countries start producing aoutmobiles?

    asked by alyssa
  68. social studies

    you would be more likely to see a rose stained glass window in what style of church? a. gothic b. romanesque c. byzantine

    asked by alexis
  69. parenthetical citation

    In one of my paragraphs I am using one source. It's an online source about a case. One quote is a quote made from a judge, and the other quote is directly from the author of the article. Do I have to cite the one from the judge, cause it's quoted within

    asked by Ashlee
  70. french

    how do you use inversion for... Tu aimes mieux le rock? is it Aimes mieux-tu....? or Aimes-tu mieux...?

    asked by Eric

    How mahy orientalism and prejudice contribut to haet crimes against the muslims, and arabs?

    asked by NENE
  72. Science

    please help I can't get these lost few words thank you I need the prefix and suffix and the Combining form for each word if there is one thank you so much ahead of time for your help Etymology Mastectomy Neuroma Tachycardia Endotracheal

    asked by Amy
  73. math

    What is the least positive integer that has exactly thirteen factors?

    asked by Jas
  74. science

    Assume we have a cannon which has a mass of 572 stones. Stones is an English unit. Which fires a projective which has a mass of 40 pounds horizontally. The projective has a velocity of 9,000,000 football fields/fortnight. (A football field is 120 yards. A

    asked by tabitha
  75. English

    I need help to unscramble this word MEFHSKAIT

    asked by Ashleigh
  76. French Q

    how do you say I like France. Is it J'aime la France?

    asked by joey
  77. Religion

    What is the origin of Judaism?

    asked by Anonymous
  78. i'm french can u help me about english??

    “outdoing” (line 4) means: (A) destroying (B) surpassing (C) defeating (D) throwing out i think B

    asked by mk-tintin
  79. english

    “squared” (line 9) means: (A) multiplied (B) opposed (C) linked (D) matched i think A

    asked by mk-tintin
  80. Science

    Please please help me!!! All I need to know are the two types of chemical reactions that occur in cells. Lisa

    asked by Lisa
  81. english

    13. “grudging” (line 20) means: (A) reluctant (B) uninspiring (C) passive (D) sullen i think A

    asked by mk-tintin
  82. english

    14. “soak up” (line 22) means: (A) clean up (B) absorb (C) put an end to (D) increase i think B

    asked by mk-tintin
  83. english

    15. “scars” (line 27) means: (A) traces (B) fears (C) echoes (D) tools I think A

    asked by mk-tintin
  84. english

    16. “baffles” (line 32) means: (A) disarms (B) disconnects (C) puzzles (D) distrusts i think C

    asked by mk-tintin
  85. english

    17. “genuine” (line 45) means: (A) false (B) unifying (C) sophisticated (D) authentic i think D

    asked by mk-tintin
  86. english

    18. “comply with” (line 52) means: (A) twist (B) disobey (C) circumvent (D) respect i think B

    asked by mk-tintin
  87. english

    20. China will be …. powerful country .… the world. (A) the more / in (B) the most / of (C) the more / of (D) the most / in i think D

    asked by mk-tintin
  88. english

    21. …. are friendly and welcoming. (A) The Chinese (B) Chinesemen (C) The Chinamen (D) The Chinesemen i think A

    asked by mk-tintin
  89. english

    23. It is said that communism …. (A) will soon be died. (B) will soon have dead. (C) will soon be dead. (D) will have soon died. i think C

    asked by mk-tintin
  90. english

    24. Chinese prosperity is now depending .... economic competition. (A) of (B) out of (C) on (D) from i think A

    asked by mk-tintin
  91. english

    25. He …. in Asia until he died. (A) will live (B) has lived (C) would live (D) lived i think D

    asked by mk-tintin
  92. english

    27. When they …. in Shanghai, they .… amazed. (A) arrive / will be (B) will arrive / will be (C) arrived / would be (D) had arrived / were i think it is not B and A but between C and D...i don't know

    asked by mk-tintin
  93. english

    28. Even today, young people .… study Lenin’s theories at the university. (A) had to (B) have had to (C) have to (D) had had to i think A

    asked by mk-tintin
  94. english

    29. We were amazed .… his knowledge of Confucius philosophy. (A) with (B) at (C) by (D) of i think C

    asked by mk-tintin
  95. english

    30. In a speech he gave last week, Deng Xiaoping .… that Chinese economy should be commercially competitive. (A) has declared (B) had declared (C) will have declared (D) declared i think B

    asked by mk-tintin
  96. english

    34. The Chinese love .… strangers. (A) of receiving (B) to receiving (C) receiving (D) receive i don't know

    asked by mk-tintin
  97. math

    How can I explain the angle sum theorem? and whats a good example for it?

    asked by Rachel
  98. fair project

    what happen when metal, cloth and wood get exposed to fire

    asked by mercedes
  99. social studies

    who is a african american that's name is T.J Marshell ''please help me''

    asked by carmen
  100. Science

    We have to draw a "element superhero" for science, I was thinking about doing mercury, but all i know about it, is it used to be in thermometers and it is silvery. What are some other things about it and is it in the group, metals?

    asked by Emily
  101. history

    can someone tell me what the due process is in government?

    asked by andy
  102. Spanish

    How do you spell the spanish word for "to understand", comprehender?

    asked by Emily
  103. inequalities

    I am absolutely stuck on this inequality. It is: 2(3x-5)>2x+6. I'm not quite sure how to solve it.

    asked by Janelle
  104. math

    Can anyone please teach me how to solve for x in terms of a,b,c in this problem? Thanks a lot! ax^2+bx+c=0

    asked by Connie
  105. science

    Scientists debate about the use of fossils as a tool to determine records of various events, such as the vanishing of the dinosaurs or the origin of our ancestors.discuss the role of fossils in helping scientists develop accurate records of the geologic

    asked by darren
  106. math-patterns

    what is the next number in the pattern 6,38,932,1087,12437

    asked by frank
  107. AP Gov

    what are two factors that increase presidential approval ratings and why? what are two factors that decrease presidential approval ratings and why?

    asked by Jenny
  108. algebra

    How can you tell from the equation of an ellipse which is the major and minor axis?

    asked by Jessica
  109. geometry

    a deli slicer is used to cut cylindrical blocks of cheese for sandwiches. suppose a customer wants slices of cheese that are round and slices that are rectangular. explain how the cheese can be placed on the slicer to get each shape.

    asked by Jontel
  110. Chemistry

    Cite the three pieces of evidence that caused Rutherford to conclude that the atom had a tiny, positively charged center (nucleus).

    asked by Maddie
  111. math

    how to solve for x in terms of the other variables in this equation?Can anyone please teach?I got no idea...Thanks a lot! 3cx+8d^2=2d(2x+3c)

    asked by Malisa
  112. physics #26

    How dose the current in the secondary of a transformer compare with the current in the primary when the secondary voltage is twice the primary voltage?

    asked by tina
  113. physics#46

    We know that the source of a sound wave is a vibrating object. What is the source of an electromagnetic wave?

    asked by tina
  114. ms.sue please answer the trigonomitry question


    asked by person
  115. biology

    if a cell undergoing meiosis were to be 2n=6 what would that mean?? i really don't understand it

    asked by anonymous
  116. Calculus

    How would I integrate (4dt)/(sqrt(15-2t-t^2)) That thing has me stumped.

    asked by Sean
  117. quick question

    In my bibliography I'm writing, would "Artemis" come before "Artemis Greek Goddess", or vice versa?

    asked by Emily