Questions Asked on
November 4, 2007

  1. CHEM

    The electron from a hydrogen atom drops from an excited state into the ground state. When an electron drops into a lower-energy orbital, energy is released in the form of electromagnetic radiation. Part A: How much energy does the electron have initially

    asked by K
  2. physics

    A ball is attached to a string with length of L. It swings in a horizontal circle, with a constant speed. The string makes an angle (theta) with the vertical, and T is the magnitude of the tension in the string. 1)Determine the Mass of the Ball.

    asked by ken
  3. Chemistry

    What is the wavelength of the transition from n=4 to n=3 for Li2+? In what region of the spectrum does this emission occur? Li2+ is a hydrogen-like ion. Such an ion has a nucleus of charge +Ze and a single electron outside this nucleus. The energy levels

    asked by Lauren
  4. science(chem)

    How would I make a 5% solution of sodium bisulfite? sodium bisulfite: NaHSO3 Molar mass: 104.06 g/mol is it 5% w/w or v/v or w/v b/c if it was w/w then it would be weight percent w/w= weight solute/ weight solution* 100 I need help on this Thanks

    asked by ~christina~
  5. CHEM

    The mass of an electron is 9.11*10^-31kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^-10m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00*10^8m/s. Express your answer numerically

    asked by K
  6. calculus

    A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $30/ft and on the other three sides by a metal fence costing $10/ft. If the area of the garden is 42 square feet, find the dimensions of the garden that

    asked by al
  7. AP Physics

    Two 10 kilogram boxes are connected by a massless frictionless pulley. The boxes remain st rest with the one on the right hanging vertically and the one on the left 2.0 meters from the bottom of an inclined plane that makes an angle of 60 degrees with the

    asked by Tim
  8. AP BIO...PLEASE HELP

    Which of the following statements about NAD+ is false? A). NAD+ is reduced to NADH during both glycolysis and Krebs cycle B). NAD+ had more chemical energy then NADH C). NAD+is reduced by the action of dehydrogenases D). NAD+ can receive electrons for use

    asked by Kristen
  9. Physics

    A small steel ball bearing with a mass of 24 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.23 m. Calculate the horizontal distance the ball will travel if the same spring is

    asked by Lindsay
  10. Physics

    A helicopter is flying in a straight line over a level field at a constant speed of 21.7 m/s and at a constant altitude of 11.5 m. A package is ejected horizontally from the helicopter with an initial speed of 21.6 m/s relative to the helicopter, and a

    asked by Lindsay
  11. chem

    A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 13.0 mg of fluoxymesterone in enough water to give a total volume of 500.0 mL. A 100.0 µL aliquot

    asked by mel
  12. math!

    A cylinder is inscribed in a right circular cone of height 8 and radius (at the base) equal to 5. What are the radius and height of such a cylinder which has maximum volume?

    asked by Anonymous
  13. Math - need help ASAP!! Please!

    The question relates to application of sine functions. -------------- A carnival Ferris wheel with a radius of 7m makes one complete revolution every 16 seconds. The bottom of the wheel is 1.5m above the ground. a) Draw a sketch to show a person's height

    asked by Anonymous
  14. grammar

    Indicate whether the following pronouns (in parentheses) are personal, intensive, or reflexive. 1. The witches addressed (him) as Thane of Cawdor. personal 2. Macbeth's darkest thoughts involved the King (himself). intensive 3. Banquo knew that (his)

    asked by anonymous
  15. science

    if a substance is known to enter a cell by diffusion, what effect would raising the temperature have on the cell? Why does it have this effect?

    asked by richard
  16. Information Technology.

    list 5 input devices please.........

    asked by Roseana.
  17. human risk assessment

    David Hassenzahl discusses the relative risks of eating peanut butter contaminated with aflatoxin and apple juice contaminated with UDMH, a degradation product of Alar, in the Power Point presentation in the Week Five, Module 5 Conference. The following

    asked by Thano
  18. CHEMISTRY

    The pKa values of acetylene, ehtylene and ethane are 25, 44 and 50 respectively. This means that acetylene is the strongest acid of the three.Explain the order of acidity for the above hydrocarbons

    asked by Delli
  19. grammar

    The sentences below are based on Virginia Woolf's "The Duchess and the Jeweller." Circle the pronouns that are in the incorrect case and write the correct pronoun on the line. Write Correct if all pronouns have been used correctly. 1. Oliver Bacon had an

    asked by anonymous
  20. Mathetmatics Application Problem - Need Help ASAP!

    The question relates to application of sine functions. ------------------ Sunsets are later in the summer than in the winter. For planning a sunset dinner cruise through the 30 000 islands, the cruise planners may find the time, t, in hours (on a 24 hour

    asked by Anonymous
  21. unsramble words

    tecser rcaseh ewn nfirde dcedwni

    asked by lil kk
  22. micro economics

    Consider a firm that has a fixed cost of $60 a minute. output=1, Variable Cost= $10 what is the fixed cost?, Total Cost? Marginal cost?, AFC?, AVC? and ATC? Output is 2? Can't quite figue it out... thanks

    asked by tina
  23. Physics

    A ball is thrown horizontally from a height of 16.01 m and hits the ground with a speed that is 5.0 times its initial speed. What was the initial speed? This question really boggles my brain. I have no idea how to solve this, given only the height. Could

    asked by Lindsay
  24. history/science

    What was the average weight and height of of a person 100 years ago??

    asked by yasmin
  25. Biology- Amylase

    Hello, In our class, we are doing a hypothetical digestion of starch by amylase lab. I do not know where to begin with this following information. If I add Benedict's solution (which I know will change color when the presence of sugar is noted). After all

    asked by Nelson
  26. Science

    what is the process responsible for the production of water on earth

    asked by Anonymous
  27. chemistry

    If 0.385 g of a gas occupies a volume of 200mL at minus 73 degrees C and 750 torr, what is the molecular mass of the gas?

    asked by Lucy
  28. Finance

    Question 1: You wish to start a project. Your initial investment is $100000. You generate 0 cash flows for the first 2 years but generate $16000 in year 3 and increase by 15% every year till year 7, after which time they decline by 2% until year 9. You

    asked by A
  29. Physics

    A ball is thrown horizontally from a height of 16.01 m and hits the ground with a speed that is 5.0 times its initial speed. What was the initial speed? Ok so I got a vertical final velocity of 17.714 m/s. Now I need to find the horizontal speed, correct?

    asked by Lindsay
  30. Economics

    There is a trade-off between the objective of reducing a trade deficit and the objective of reaching full employment because:(A)Net exports rise as income increases(B)As income increases, the trade deficit rises(C)Imports fall as income increases(D)Fiscal

    asked by Sharp
  31. micro_economics

    can someone please help me with this question? Testifying at a price fixing trial involving Cargill Corp. and the market for chicken growth hormone, (in which Cargill is one of only three firms worldwide), an executive for Perdue said: "It's an oligopoly.

    asked by Econo_Help
  32. Physical science

    The question which elements would be classified as metals? Would this include: metals - other metals and metaloids. Does metaloids fall under the category of metals - we are to look at the periodic table and list the metals - not sure if this inclds

    asked by liz
  33. Social Studies Egypt

    Egypt : New Kingdom Three areas conguered by Egypt diring the New Kingdom were: 1. 2. 3.

    asked by Haley
  34. ManEcon

    The belief that monetary policy can be effective in changing aggregate demand and that interest rates are the critical monetary variable is associated with (A)Modern Keynesians (B)New classical economists (C)Monetarists (D) All of the above

    asked by Npgm
  35. Accounting question

    my question is..... how or what are the steps to preparing general journal entries.

    asked by student acc
  36. geometry

    ok... i need help with geometric proofs..i have a test tomorrow and don't understand it one bit..

    asked by romina
  37. sra Mcginiun

    Hi That is so kind of you to give your time. I was looking for a one on one spanish tutor if you find you are interested pelase let us know thanks Claire

    asked by sams mom
  38. English - Play

    Hello. I'm having trouble understanding a part in a play called Licking Hitler... The situation is like this... It's WWII and a team of British propaganda unit is devising up a plan to tarnish the image of the mayor of Cologne(Germany)... Duffendorf (or

    asked by James
  39. Biology

    Of the following substances, which would react positively with Biuret's, Lugol's, and Benedict's? 1. water 2. starch 3. glucose 4. maltose 5. sucrose 6. fructose 7. galactose 8. albumin 9. hamburger juice 10. onion juice 11. milk 12. potato juice 13.

    asked by Tommy
  40. Biology

    How does an onion stores its carbohydrates? Why? What part of a plant is a potato? What part of a plant is an onion?

    asked by Tommy
  41. biology

    Can males have turner syndrome? Like if a male was born with part of his x chromosome missing?

    asked by jan
  42. English

    What grade levels would Huckleberry Finn and Moby !@#$%^& be in?

    asked by Anonymous
  43. more math!

    A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola . What are the width and height of such a rectangle with the greatest possible area?

    asked by Anonymous
  44. math

    how many possible 3 digit numbers are there that have a middle zero? how many possible 4 digit numbers are there that have two middle zeros? Explain your answears

    asked by jake
  45. English- VOCAB. for Great Expectations

    What do these mean? manifest, blithe, gait, felicious, malice, interlocutor, pervade, dejected, assail, obtrusive, exonerate, tacit, extricate, diconcerted, ascertain, vicarious, trenchant, execrate, cogent, miscreant, acquiesce, affable, propitiate,

    asked by anonymous
  46. Economics

    can someone please help me with this question? Testifying at a price fixing trial involving Cargill Corp. and the market for chicken growth hormone, (in which Cargill is one of only three firms worldwide), an executive for Perdue said: "It's an oligopoly.

    asked by Econo_Help
  47. Please revise my essay

    Dreams Are Taken Away It was a tough day on September 30, 2002 with a crowd of high school students carrying posters and signs marching in the middle of the street. None of them were happy at all. "Governor Davis id throwing awat our future with his unfair

    asked by shylo
  48. SCI 275

    What are some goals of environmental science?

    asked by dawn
  49. please revise my essay

    Dreams Are Taken Away It was a tough day on September 30, 2002 with a crowd of high school students carrying posters and signs marching in the middle of the street. None of them were happy at all. "Governor Davis is throwing away our future with his unfair

    asked by shylo
  50. Early Child Ed.

    Would you check these questions and my answers,please? 1. Stories such as "The Three Little Pigs,""The Billy Goats Gruff," or Dr. Seuss books,promote children's cognitive and linguistic skills through the _____________ strategy. A. repetition B. eventcasts

    asked by Anonymous
  51. Biology...Respiration

    Can any body recommend any websites that don't actually use diagrams to explain glycolysis?? can't seem to find any

    asked by Kany Simms
  52. Finance

    Q1:You wish to start a sproject.Your initial investment is$100000. You generate 0cashflows for first2years but$16000in year3&increase by15%every year till year7,after which time they decline by2%until year9.You expect0growth in cash flows beyond yaer9, but

    asked by A
  53. science

    How does an electron relate to energy level? How does subatomic particles relate to atomic unit? The reviews ask for 1 to 2 sentences.

    asked by liz
  54. Social studies Egypt

    Who controlled all aspects of Egyptian life during the Old Kingdom?

    asked by Haley
  55. science

    The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: which elements would be classified as metals is it just D & R or other metals which would be J K S S S S S J S S F S S S S S S S S

    asked by liz
  56. ETH 125

    I am lost. My assignment is Ethnic Groups and Discrimination. Choose an ethnic group to which you personally belon. If you identify with more than one group, chooose the group with which you most identify or about which you would like to learn more. I"m

    asked by Sally
  57. language arts

    what is the verb form of solicitude and elusive. I searched every dictionary i could find and i found nothing.

    asked by chris
  58. Math

    what is a number that divied by 3 has a remainder of 2 also that smae number divided by 4 has a remainder 3 and that same number divided by 5 has a remainder of 4

    asked by Jacob
  59. World History

    What are main beliefs of the sunni verses the shiites? During the war of 1980, what were the Sunnis and Shiites relationship? Has is changed since the war? What is their affects on the war currently occuring in Iraq?

    asked by Katie
  60. CHEMiSTRY

    whats the chemical composition of steam?!?

    asked by MARGARiTA
  61. physical science

    The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on the page is review and reinforcement structure of an atom - the three main subtomic particles are the proton, the nuetron and the electron.

    asked by liz
  62. physical science

    How is a subatomic particle related to atomic mass unit How is an electron related to enrgy level. Our study guide asks 1 to 2 sentences

    asked by liz
  63. French

    What's the difference between Subjonctif and Indicatif? I know that Subjonctif is an emotion or desire? Is Indicatif the rest of the verbes? Also when do you use auquel and duquel?

    asked by Anonymous
  64. Algebra 2

    x f(x) g(x) 2 5 0 3 7 1 4 9 2 5 11 3 What is the equation of g(x) ? What is g(g(4)) ? Name a point on the graph of g(x)

    asked by Allisen
  65. algebra

    A group of people in new Yorkm made a very large round jelly donut which broke the world record for donut size, it weighed 1.5 tons and had a circumstance of 50 ft. What was the diameter of the donut?

    asked by logan
  66. grammar

    Identify each pronoun's case. In "The Seafarer," the old mariner tells us (1. objective) of his (2. possessive) hardships. He (3. nominative) recalls terrors that afflicted him (4. objective) but are unknown in our (5. possessive) experience. Underline the

    asked by anonymous
  67. Social studies

    During the New Kingdom, through what two ways did Egypt's empire become larger and wealthier?

    asked by Haley
  68. social studies egypt

    Ramses II had many, many monuments and statues bulit for himself. True or False?

    asked by Haley
  69. science Dr. Bob /Pursley

    this is the chart we were given S = empty square 13 columns Question which elemnts are classified as metals. K S S S S S J S S F S S S S S S S S S D S S R S S S S S S

    asked by liz
  70. Quick Calc Question

    I can't remember how to integrate ye^ey with respect to y. Is it (y^2)e^xy? or do i need to do integration by parts? i just cant remember.

    asked by Michael
  71. grammar

    Indicate whether each of the following pronouns (in parentheses) is demonstrative, interrogative, indefinites, or relative. 1. Was Macduff the one (who) discovered the murdered king? relative 2. (Who) else went to the king's chamber? interrogative 3.

    asked by anonymous
  72. physical science

    how is an electron related to atomic mass how is an isoptope related to mass number I truly do not understadn how they are realted any help

    asked by liz
  73. CAIS

    Build a majority circuit. Three inputs and one output. The vaue of its output is 1 and only if two or more of its inputs are 1, otherwise the output of circuit is 0.

    asked by Ti
  74. Physics

    In terms of Ohms Law (V=IR), when plotting a graph of V against I, is it safe to say that the line passes through the origin, even though 0/0 does not exist?

    asked by Vic
  75. Early Child Ed.

    Would you please check these questions and my answers? If I am wrong, please let me know. 1. During a visit by her Ghanaian grandmother,Shermeka learned how to make African cornbread. While Grandmother silently showed Shermeka how to prepare the

    asked by Anonymous
  76. Math

    Find the % of increase or decrease in changing from the first number to the second. 20 to 17 = what % of decrease? How do I figure this? Do I divide first the 20/17 whih equals 1.176 and that is my % of increase 1.18?

    asked by Tyler
  77. physical science

    what is a one sentence that describes how subtatomic particles and atomic mass unit are realted?

    asked by liz
  78. Phyiscal science test monday

    The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. Which pair of eleemtns has the same number of valence electrons? clueless 2. What pair of elements is in the same period? D and

    asked by liz
  79. social studies

    What is the longitude and latitude of the Kuwait Towers?

    asked by Kelly
  80. Information Technology.

    please could someone list 5 or more output deivces of a computer for me please.......

    asked by Roseana.
  81. science

    The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. What pair of elements is in the same period? D and R 2. Which pair of elemetns is in the same family? K and F 3. Which element

    asked by liz
  82. anatomy

    how does hemoglobin carry O2 in the blood?

    asked by sara
  83. pigskin geography

    name the teams that will travel to a ordering state to meet the competition?

    asked by bob
  84. Quick Question!

    If I wanted to write a speech that was going to be 10 minutes long, How long does the page have to be?, How many pharagraphs do I have to write?, How many pages do I have to write?

    asked by Mack
  85. scienece

    what is 'Fe' according to the periodic table?

    asked by izlam
  86. physical science

    How is an electron related to an electron cloud

    asked by liz
  87. grammar

    His courage should impress you and (I, me). me I already had this checked earlier but now I am thinking it is I because you could say I am impressed but you couldn't say Me is impressed.

    asked by anonymous
  88. Biology

    How can you explain that Biurets reaction with amino acids as compared to other protein substances?

    asked by Tommy
  89. math.algebra

    I need help solving: ã5x+5-=0 Thanks for the help!!1

    asked by kim
  90. World History

    What are some examples of syncretism in Europe. I have tried google and wikipedia and still cant find any

    asked by NIQUE FROM DALLAS
  91. Algebra

    2(3x-6)-3(5x+4)=5(7x-8) For this equation, I keep getting .36363636363636363636 repeating. Is this right? I think I am doing something wrong...Please help, thanks

    asked by anonymous
  92. social studies

    who is the prince of the dead?

    asked by Anonymous
  93. 13 colums science

    K S S S S S S J S S F S S S S S S S S S D S S R S S S S S S

    asked by liz
  94. science

    Does the mass of tap water change when salt is added.

    asked by abigail
  95. Social Studies

    When the war endend in 1485 what family took over the English throne?

    asked by Emily
  96. Math

    What % of increase is it from 50 to 60? Do I just divide 50 by 60 which is .8333 and my percent is 8.3%

    asked by Tyler
  97. Design Technology

    What is nylon threads and can you tell me the history of it?

    asked by izlam
  98. social studies

    i help you build a cave, a bridge of silver and crown of gold, am very small but people are afraid of me won't let me help

    asked by sandy
  99. math

    how many possible 3 digit numbers are there that have a middle zero? how many possible 4 digit numbers are there that have 2 middle zero? explain your answear

    asked by Linda Delorme
  100. science Dr Bob

    In reference to table you helped me with the last question is which elements would be classified as metals. Does this include just metals or metals and alltoids and other metals I answered D & R I have a huge test thanks so much.

    asked by liz
  101. French repost

    Its suppose to be C'est cette porte, la. (with accent)= C'est la porte, la. (with accent) It just said that this needs special attention and I don't know why.

    asked by Miche
  102. pre-calc

    how do you solve this: the square root of a+4 plus the square root of a-3 equals 7

    asked by Amanda