# Questions Asked onOctober 15, 2006

1. ## Calculus

The line that is normal to the curve x^2=2xy-3y^2=0 at(1,1) intersects the curve at what other point? Please help. Thanks in advance. We have x2=2xy - 3y2 = 0 Are there supposed to be 2 equal signs in this expression or is it x2 + 2xy - 3y2 = 0 ? I'll

2. ## history

Why, when, and where did Abraham Lincoln say "What kills a skunk is the publicity it gives itself." ? Thanks. Since this is not my area of expertise, I searched Google under the key words "Abraham Lincoln Skunk quote" to get possible sources. I got over 15

3. ## Sample purity

Question: A student spots an unknown sample on a TLC plate and develops it in pentane solvent. Only one spot, for which the Rf value is 0.05, is observed. Is the unknown a pure compound? What can be done to verify the purity of the sample using TLC? My

The ______________ gave their names and addresses to the_____________ secretary. witnesses attorneys' witnesses' attorneys witnesses attorney's witness's attorney's "These____________ are the________,'' said the treasurer. conclusions presidents

5. ## Economics

2. Compare the following two pairs of goods: Coke and Pepsi Skis and ski bindings In which case will the cosnumer respond more to a change in the relative price of the two goods? I think that it would the skis and ski bindings since they are complements.

6. ## Integration

Intergrate ¡ì sec^3(x) dx could anybody please check this answer. are the steps correct? thanks. = ¡ì sec x d tan x = sec x tan x - ¡ì tan x d sec x = sec x tan x - ¡ì sec x tan^2(x) dx = sec x tan x + ¡ì sec x dx - ¡ì sec^3(x) dx = sec x tan x

7. ## Visualizing spots

Question: A colorless unknown substance is spotted on a TLC plate and developed in the correct solvent. The spots do not appear when visualization with a UV lamp or iodine vapors is attempted. What could you do to visualize the spots if the compound is the

8. ## science

Is 40ml of oil denser than 25ml of vinegar? and are most chemical changes easy or difficult to undo? Density equals weight Divided by volume, so the amount of ml (volume) makes no difference. Vinegar is denser than oil. That's why when you put the 2

9. ## Chemistry

Hi! I kind of need help to get started with these four problems. There are more problems like the ones below. It would be great if I had an example of each of the four problems. Thanks! FeSO4(aq)+ KCL(aq) (for problem 1 and 2) 1)When the following

10. ## GEOGRAPHY / SCIENCE

The theory that addressed the apparent ability of landmasses to move through the crust is called Continental Drift? I think this is the answer but not sure. Please help Yes, You're right. The Continental Drift theory is based on plate tectonics.

11. ## More spots

Question: A colorless unknown substance is spotted on a TLC plate and developed in the correct solvent. The spots do not appear when visualization with a UV lamp or iodine vapors is attempted. What could you do to visualize the spots if the compound is the

12. ## Chemistry

Iron ore consists mainly of iron III oxide. When iron III oxide is heated with an excess of coke(carbon), iron metal and carbon monoxide are produced. Assume that even if an excess of coke is not present that the reaction proceeds as described. A)write a

13. ## Algebra

Simplify each expression. Assume that no denominators are zero. Write each answer without using negative exponents. The ^'s mean they're exponents y^-3y^-4y^0 ------------

14. ## Inorganic Chemistry

The atoms in barium metal are arranged in a body centered cubic unit cell. Calculate the radius of a barium atom in A if the density of barium is 3.50g/cm3. The atomic weight of barium is 137.34. The atoms in barium metal are arranged in a body centered

15. ## momentum/impulse

The following data concerns a tennis ball at a given instant before it is struck by a tennis racket; horizontal momentum of tennis ball= 2.4Ns kinetic energy of ball= 45J a) why is correct to give the direction of the momentum but not the kinetic energy b)

16. ## AP chem!!!

Iron ore consists mainly of iron III oxide. When iron III oxide is heated with an excess of coke(carbon), iron metal and carbon monoxide are produced. Assume that even if an excess of coke is not present that the reaction proceeds as described. A)write a

17. ## Finance Help! 3 questions

Hi, i was wondering if someone could please help me with these 3 finance questions. it would be must appreciated 1. you receive payments of 1000 dollars every 8 montsh for the next 9 years. the first payment will occur 8 months from today. there will be a

18. ## math

Help!! I cant find this word fesselation. I looked in books and the internet nothing please help Spell it this way: tesselation ok do you know wht it means tesselation. I tried it both ways tesselation and fesselation.F ound nothing HELP!!!! I cant find

19. ## Honors world Cultures(history)HELP PLEASE!!!!!!!!!

The Jewish legal code came partially from what civilization? Possibly from the Code of Hammurabi:

20. ## anatomyan dphysiology

explain how the physiology of the bone is related to its anatomy.Explain how the physiology of the hand is related to its anatomy. http://www.btinternet.com/~diptone/arp/Anatlo1.html well all i can tell is go on gogle i am not too sure but tryto find

Could you please proofread my argumentive essay, check for fragments and prounoun use. Thanks! Is Beauty Really Skin Deep?

The following data concerns a tennis ball at a given instant before it is struck by a tennis racket; horizontal momentum of tennis ball= 2.4Ns kinetic energy of ball= 45J a) why is correct to give the direction of the momentum but not the kinetic energy b)

24. ## Chemistry

Cyclohexane is composed of 85.6 % C and 14.4% H. when it is mixed in the proper ratio with oxygen, it can be used as an anesthetic. At 755 mmHg, and 25 degrees Celcius, it has a density of 2.05 g/L. what is the molar mass of cyclohexane and its molecular

25. ## american history

1. Which of the following was not part of Britain's new imperial system after 1763? The Sugar Act The Molasses Act The Stamp Act The Currency Act The Quartering Act Please check the date for the Molasses Act.

26. ## cHEMISTRY

wHAT IS THE SYMBOL FOR THE ION WITH 13 PROTONS AND TEN ELECTRONS? CAN U EXPLAIN HOW TO GET YOUR ANSWER, AND CAN YOU GIVE ME A WEBSITE THAT HELPS ME WITH CHEMISTRY 13 protons will be element with atomic number of 13. Look on the periodic table and see

27. ## Social Studies

My son has to write a paragraph for a Social Studies project. The paragraph should include a "Power 1 statement at the beginning and end of the paragraph and at least three Power 2 statements. Eache Power 2 statement should be supported by at least two

28. ## Solvents

Question: When a TLC plate ws developed, the solvent front ran off the top of the plate. What should be done to correct the error. Me: The only reason I'm giving you this question to check is that it seems too simple. My answer would be to stop development

29. ## math

the only perfect number of the form y to the power of n + x to the power of y the answer is 28. 1 to the power of 3 plus 3 to the power of 3=28.

30. ## Chemistry

How many neutrons in carbon-12 and how did you get yuor answer The atomic number is the number of protons. Look for element number 6 on the periodic table and see carbon. For carbon, there are 6 protons. # protons + # neutrons = mass number 6 + # neutrons

What would the Journal Entry be for this transaction: Notified by Alex's Engineering Co that Success's bid of \$9,000 on a proposed project has been accepted. Alex's paid a \$2,500 cash advance to Sucess Systems. Would I have two different journal entries

1. Which of the following was not part of Britain's new imperial system after 1763? (Points: 1) The Molasses Act 2. Colonial assemblies established committees of correspondence to: (Points: 1) Coordinate intercolonial communication and organize efforts to

33. ## Chemistry

What is the famous isotope used in archeological dating? carbon 12 I thought it was carbon 14 yes carbon 14-- made an error But if you knew, why are you asking these questions? I need reaasurance, so when I have a test I know the exact answer C-14 is ONE

34. ## macroeconomics

can anyone help with this question? What would happen to the money supply if the federal reserve made an open market sale of 5 billion worth of government securities to a private citizen. Assume that the bank with which the private citizen does business is

35. ## math

2)How many arrangements of the integers 1,2,3,...,n are there such that each integer differs by one (except for the first integer) from some integer to the left of it? Let's construct the arrangement. First consider 1, it can only have two placed next to

36. ## Chemistry

What is the symbol for th eion with 9 protons and 10 electrons? Look at the answer I gave you for Al and see if you can answer this yourself. If you have trouble, post again but tell us why you don't understand the next step to take. So basically this

37. ## social studies

What does the quote said by Abraham Lincoln,"What kills a skunk is the publicity it gives itself." mean? Skunks are not popular because of the terrible odor they can produce. This can be a metaphor for a person who is publicized for the bad things they do

38. ## English

Which of the following sentences is grammatically correct? 1. Since we can get another one, it didn't matter anyways that we can't find it. 2. She felt badly that she arrived so late. 3. Of all the students in the class,he asked permission most politely.

1. Which of the following was not part of Britain's new imperial system after 1763? (Points: 1) The Sugar Act The Molasses Act The Stamp Act The Currency Act The Quartering Act 2. Colonial assemblies established committees of correspondence to: (Points: 1)

40. ## math

A certain football league has the following scoring system: - each field goal counts for 5 points - each touchdown counts for 3 points The only way to score points is with some combination of field goals and touchdowns. They have noticed that not every

41. ## Math help plz ASAP.

Rationalize each denominator. 6 + square root of 2 ____________________________ square root of 3 PLZ HELP..dont kno how to do this question.plz explain..thanks You have (6 + sqrt(2))/sqrt(3) multiply that by sqrt(3)/sqrt(3) to get [(6 + sqrt(2))*sqrt(3)]/3

42. ## Chemistry

When hydrogen selenide gas reacts with oxygen, selenium dioxide and steam are produced. How many liters of selenium dioxide would be produced from 5.50 L of oxygen? Assume 90% yield and that all gases are measured at the same temperature and pressure.

43. ## english

which sentence contains a predicate noun? Hoover will lead the group hike on sunday He plans to leave Lookout Point He is an expert on the plants of the region He tells hikers about animals too To have a predicate noun in a sentence, you must also have a

44. ## Chemistry

Can you please help me figure out this fill in the blank? Okay here it goes: Neils Bohr stated the structure was similar to the _________________ of our galaxy. and the other is: The Rutherford experiment led tot the discovery of the ___________. Thank

45. ## pigskin geography

Does your newspaper carry a comic strip about someone that would have sailed with Leif Erickson? If so name the comic strip. _ _ _ _ _ the _ _ _ _ _ _ _ _. Check this site. http://www.kingfeatures.com/features/comics/hagar/about.htm Thank you times a

46. ## economic

If the Government fixes the price of this product at \$2 explain what would happen in the market. Draw a supply and demand curve for "this" product. Is the fixed price above or below the market equilibrium? Depending on how you answer, there should be a

47. ## math (data management)

How many n-digit decimal sequences (using digits 0-9) are there with k 1s? I'm not entirely sure what you question is asking, but I'll take a guess. You have n digits and k 1's with k

48. ## Math

A certain football league has the following scoring system: - each field goal counts for 5 points - each touchdown counts for 3 points The only way to score points is with some combination of field goals and touchdowns. They have noticed that not every

49. ## GEOGRAPHY ? SCIENCE

The theory that described the creation, destruction, and mobility of the oceanic crust is called Hydroplate Theory? I think this is right but not sure. Check these sites for two possible answers. http://www.tcd.ie/Geology/MAIN-PAGE/CE3A8/plates.pdf

50. ## world history Need AsAp

Analyze European motives for explanation Think about the Renaissance & Reformation Think about the impact of the crusades Think about the 3 G's of exploration Thia question is like doing your homework, youthink about it first and then come up with some

51. ## Math help please *calculus*

ok im having a bit of a problem rationalizing denominators. i have 2 to the root of 3 +4 divided by the root of 3. I have tried multiplying the top and bottom by the root of 3 and the answer, but then i get stuck at this part. Do i multiply 4 by 4 and make

52. ## Accounting

I need help on the freight charges of each transaction, I always get confused when I see the FOB’s. Presented here are selected transactions for Norlan Inc during September of the current year. Norlan uses a perpetual inventory system. Sold merchandise

53. ## Dr Bob222 !!!! Chemistry

Cyclohexane is composed of 85.6 % C and 14.4% H. when it is mixed in the proper ratio with oxygen, it can be used as an anesthetic. At 755 mmHg, and 25 degrees Celcius, it has a density of 2.05 g/L. what is the molar mass of cyclohexane and its molecular

54. ## algebra

John has 36 books in his locker. He has text books,library books, and telephone books. How many books of each kind does he have if: lib + tel= 2x text books and text + tel = 3x lib books I think it'd be easier to let T,L and B denote text books, library

As both products are good,order the _______ one from the_______ competent of the two clerks. cheaper, more cheapest, most cheaper, most cheapest more When comparing two things or two people, use -er or more. Both of your comparisons in this sentence

56. ## math

the number of noncollinear points needed to determine a circle Two. The location of the center, and one point on the circle (ie, the length of radius), you have determined the circle. However, the circle thus determined can be an an infinite number of

57. ## math

How many n-digit decimal sequences (using digits 0-9) are there with k 1s? Decimal sequences meaning you can have as many 0s in front of a number. For example: 000001234557891111 would be consider valid. So how do i come up with an equation? See my

58. ## Math help plz

How thick is a pile of paper? Find a relationship between the number of folds and the number of layers. Note your observations. Number of folds Number of layers 0 1 1 2 2 4 3 8 4 14 5 23 Plz help im so stuck on this question Are you sure 4 14 and 5 23 are

c----of p---- is the different stages that a product has to pass through before they are sold g----d----p-----is the total value of goods and services produced b a country in a year The first one looks like cycle of production, but I'm not sure about it.

60. ## Algebra Vocab.

I need help with finding the term tesselation. I looked everywhere. i need help with tesselation and ratio If you will look up the right word you will find it. The word is spelled tessellation. Go to www.google.com, type in the word (even just close to the

61. ## Urgent Help Economyst

Hey Economyst can you please help with the following microeconomics question, have tried but getting no where. Q: a demand function for a economics book is P = 100 - 0.005Q the publisher must pay \$20 per book in prinitng and distribution costs and in

62. ## GEOGRAPHT / SCIENCE

The braod theory that describes the dynamic nature of large segments of the lithosphere and the underlying mantle is called Plate-Tectonics Theory? not sure Please see the other answers I posted.

63. ## chemistry

At 9.20 cm cubed air bubble forms in a deep late at a depth where the temperature and pressure are 6 degress Celcius and 4.50 atm, respectively. Assuming that the amount of air in the bubble has not changed, calculate its new volume at STP. Use the

A man has a basket of eggs. He wants to cross a toll bridge but has no money. The first toll collector says he will let the man pass if he gives him half of his eggs and half an egg. When he gets to the next toll collector he still has no money. Again the

65. ## science i need help

what is the realtionship between the focus and the epicenter? the focus is the depth of an earthquake, the epicenter is the center of the earthquake.

66. ## sports physiology

i really need help for an assignment. it askes to name the contraction phases, joints and muscles involved in the following exercises: biceps curl, seated row, press up, squat and calf raise. iv been searching everywehere. ne extra help would be great

67. ## pigskin geography

what is the setting of the Mark Twain book THe clelbrated Jumoing frog of calaveras county?

68. ## World History

Can Someone provide me with a link some information about The relationship of european nations with china and japan i need to answars a question which nation policy was more effective? so i need some information on each policy Would that be in the 13

69. ## english essay

Could someone please proofread my essay for english? The topic is "self-deception as self-destruction".

70. ## geometry

if a plane leaves a horizontal at an angle of 60 degrees and at 1 minute reaches a point of 12 miles how fast is the plane going.... "reaches a point of 12 miles" is ambiguous. Do you mean 12 miles in the air (elevation), perpendicular to the ground? Or,

71. ## Algebra Vocab.

I need help with finding the term tesselation. I looked everywhere. I have answered this three times. Go to www.google.com and type in the spelling like this. tessellation. Two ls, not 1.

72. ## american hist

why did the framers begin the constitution with "we the people..."? http://en.wikipedia.org/wiki/Democracy

73. ## Math

6. Vangie had 0.75 ream of bond paper. She used 0.25 of it in her project. What part of the ream of paper did she use? Please answer this question.\

74. ## artificial sweeteners

Do artificial sweeteners have any bad side effects? Yes. Read it all here, this article goes over the weakensses of the sweeterners. http://www.westonaprice.org/modernfood/sugarfree_blues.html Artificial sweeteners have no bad side effects, except for a

75. ## science

I see others have asked the same question but I do not understand the answers given. Question is to do with zinc solid and dilute sulphuric acid. What substance is left? I see by other posts that Bob Pursley answered this question. I haven't seen his

76. ## english

Can some one check my sentence do they need change or no when it falls under the rule of Dangling Modifiers: 1. Flying over the aok tree, the farmer saw the flock of birds that had damaged his crops. 2. Ironing out all wrinkes, the pants looked much more

77. ## algbra

need help on algabra post a question. We can't read minds, at least not through the ether. cgfhiop '

78. ## Spanish

Hey, can someone please proofread my work? It needed to be mostly in present participle, and I had to create a fake story about Salvador Dali's artwork, Persistence of Memory. Thanks. SPANISH: Un chico, Paco, ha decidido andar alrededor el pueblo para

79. ## ENGLISH

These _________ are the __________," said the treasurer. conclusions presidents conclusion's president's conclusions presidents' conclusions president's conclusions president's

80. ## english help immediately

Write about a time when you had to show respect for authority, even though it was difficult to do so. I need some ideas, thanks. Have you ever been angry with an authority figure -- parent, grandparent, coach, teacher, principal, police, etc.? Did you show

81. ## sports physiology

i really need help for an assignment. it askes to name the contraction phases, joints and muscles involved in the following exercises: biceps curl, seated row, press up, squat and calf raise. iv been searching everywehere. ne extra help would be great

82. ## Microeconomics - profit maximisation

Hi, I would really appreciate if someone could help me out on this question! Im not looking to cheat I just want some kind guidance on how to do the question. Ive looked and I honestly don't know! Given the demand function P = 100 - .005Q a producer must

83. ## math

the only perfect number of the form (x to the power of n) + (y to the power of n) Perfect numbers have the form 2k−1(2k − 1) The first few perfect number are 6,28,496 and 8,128. Does n have to be something other than 1 in your question? I can see 28 =

84. ## SCIENCE

The_____________ of a portion of a lithospheric plate determines its final elevation. I can't find an answer. Since this is not my area of expertise, I searched Google under the key words "lithospheric plate elevation" to get these possible sources:

85. ## english

Can someone check my sentences to see if they need change or no change when it falls under the rule of Predication: 1.Our resolutions should begin at midnight on January 1. 2. The reason for the cat's illness is because she was allergic to the dog. 3.A

86. ## Oxidation

Sugar oxidizes pretty easily, doesn't it? And ketone not as well? Thank you. Sheryl I think that is right. Alcohols go to aldehydes and they go to ketones.

88. ## anatomy and physiology

the human foot and the human hand are simila, but have anatomic differences. describe a difference and explain how it is related to the physiology of the hand and foot. http://sportsmedicine.about.com/cs/foot_facts/a/foot1.htm

89. ## math

the radius of a circle when the numeric values of the circumference and the area are equal PI r^2= 2PI r r^2- 2r=0 (r-0)(r-2)=0 So what r values satisfy the equation. There are two. so what is the answer r=0 or r=2

90. ## macro

what would happen to the money supply if the federal reserve made an open market sale of 5 million worth of gov't securities to a private citizen? assume that the bank with which this private citizen does business with is all loaned up, has reserves of 20

91. ## science

what other substance apart from zinc sulphate is left when solid zinc and dilute sulphuric acid go together? i've already answered that pls can you explain what other substance is made apart from zinc sulphate when solid zinc and dilute sulphuric acid are

92. ## To Dr.Bob222

Is the answer for the nine protons and 10 electrons thing F^1- Yes, I answered to that effect at the original post. Its the fluoride ion.

93. ## BIOLOGY HELP!!!!

Does it take energy for polymerization reasctions to proceed or ddo they occur spontaneoulsly?? Why or why not?? http://en.wikipedia.org/wiki/Endothermic_reaction 10. From a bottle of molten nutrient agar you need to pour 20 agar plates each containing 50

94. ## SCIENCE

What portion of a lithospheric plate determines its final elevation?

95. ## american hist

-how were the federalists able to win ratification of the constitution? http://en.wikipedia.org/wiki/Federalist_Papers http://en.wikipedia.org/wiki/History_of_the_United_States_Constitution http://www.answers.com/topic/ratification-of-the-constitution