# Questions Asked onNovember 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

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.

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

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

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

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

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

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

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

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

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?

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

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)

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?

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

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

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

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

21. ## unsramble words

tecser rcaseh ewn nfirde dcedwni

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

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

24. ## history/science

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

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

26. ## Science

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

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?

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

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?

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

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.

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

33. ## Social Studies Egypt

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

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

35. ## Accounting question

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

36. ## geometry

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

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

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

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.

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?

41. ## biology

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

42. ## English

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

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?

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

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,

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.

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

48. ## SCI 275

What are some goals of environmental science?

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

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

51. ## Biology...Respiration

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

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

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.

54. ## Social studies Egypt

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

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

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

57. ## language arts

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

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

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?

60. ## CHEMiSTRY

whats the chemical composition of steam?!?

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.

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

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?

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)

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?

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

67. ## Social studies

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

68. ## social studies egypt

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

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

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.

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.

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

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.

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?

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

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?

77. ## physical science

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

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

79. ## social studies

What is the longitude and latitude of the Kuwait Towers?

80. ## Information Technology.

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

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

82. ## anatomy

how does hemoglobin carry O2 in the blood?

83. ## pigskin geography

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

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?

85. ## scienece

what is 'Fe' according to the periodic table?

86. ## physical science

How is an electron related to an electron cloud

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.

88. ## Biology

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

89. ## math.algebra

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

90. ## World History

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

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

92. ## social studies

who is the prince of the dead?

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

94. ## science

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

95. ## Social Studies

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

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%

97. ## Design Technology

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

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

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

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.