# Questions Asked onJune 7, 2009

1. ## Physics

a model of a helicopter rotor has four blades, each 3.40 m in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 550 rev/min. A) what is the linear speed, in m/s of the blade tip? B.) what is the radial

2. ## Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the ground does the ball go? (c)

3. ## Physics

A markman fires a .22 caliber rifle horizontally at a target the bullet has a muzzle velocity with magnitude 750 ft/s. How much does the bullet drop in flight if the target is (a) 50.0 yd away and (b) 150.0 yd away? for this question i was given the

4. ## Math

Use your knowledge of exponents to solve. a) 1/2^x=1/(x+2) b) 1/2^x>1/x^2 So I know that these functions are rational functions.. and I am trying to solve for x. I tried to solve them by I keep getting stuck with the exponent 2 which is the exponential

5. ## Math

The dimensions of a gift box are consecutive positive integers such that the height is the least integer and the length is the greatest integer. If the height is increased by 1 cm, the width is increased by 2 cm, and the length is increased by 3 cm, then a

6. ## Chemistry

Would CH3-CH2-CH2-O-CH2-CH2-CH3 be Dipropyl Ether or Propyl Propyl Ether? Thanks for checking.

7. ## Science

give 3 examples of pure science vs applied science

8. ## chemisty

is this correct?: word equation: nitric acid+potassium hydroxide= potassium nitrate balanced symbol equation: 3HNO3+2KOH=2KNO3+H2O

9. ## Syllables

How many syllables are in chocolate? 2 or 3?

10. ## english

can you please give me a metaphor for largeness. for smallness the metaphor i have is She was a spider, unnoticed by all, spinning her web among the endless, towering redwoods.

11. ## english - huckleberry finn

Discuss the characteristics of JIm and how or if he qualifies asa heroic figure.

12. ## History

Help! I have a paper that needs to adress the following question: Describe how agriculture contributed to economics, and how it contributed to economic development, regional specialization, and social reform,during 1780-1850. I am not sure where to begin

14. ## english

metaphor for largeness

15. ## Math

I don't think I am understanding this question. Question: A zoo started with 16 cranes and panned to hatch 20 chicks. A few birds were kept for breeding and the rest realeased into the wild. At the end of last year, a total of 136 cranes had spent some

16. ## chemistry

how many atoms of tungsten are in 504.56 g of tungsten(IV)acetate. i attempted this problem but ended up with atoms of tungsten(IV) acetate in tungsten(IV) acetate instead of atoms of just tungsten in tungsten(IV) acetate. please help thanks

17. ## english

metaphor for optimism. I'd really appreciate it if you'd help me

18. ## AP Stat

how do you find the center of a histogram by just lookiing at it I find it hard just given the histogram because then you don't have actual values and estimases because of the scale of the histogram and calculate the median which is the center so i do you

can you please help me with this question, i'm completely lost. talia's uncle owns a warehouse and he has given Talia an area in which to store the computer supplies for his company. her uncle gave Talia 40 m of rope and told her to section off a

What is Indirect measurement?

21. ## biology

im kind suck on this one can anyone help me out: explain four ways through which your body natually deals with microbes.

22. ## Logarithmic Function help

Ok, I was getting all my answers right until I stumbled on this one: 5e^0.2x=7 This is what I was doing: 5e^0.2x=7 5lne^0.2x=ln7 5*0.2x=ln7 0.2x=(ln7/5) ??? The answer is 5ln(7/5) but i do not know how they derived to this. Thank you so much!

23. ## Science

I have a question re: my Science final: How do "human activities" affect the carbon oxygen cycle? Thank you!!!!

24. ## CHEM-HELP!!!!

8. 2(NH4)3PO4--> 3N2+ O2+ 12H2+ 2PO3 a)name products b)Name the reactant c)type of reaction this is the only info that is given///thank you

25. ## Economics

If all the assumptions of perfect competition hold, why would firms in such an industry have little incentive to carry out technological change or much research and development? What conditions would encourage research and development in competitive

26. ## Chemistry

I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+ 8g of NaCL then I stirred it and filtered in a buchner funnel to be left with 6.7496g of silver

27. ## accounting

The auditors may decide to confirm accounts payable on an audit engagement. Describe two reasons why the confirmation of accounts payable is not a genreally accepted auditing procedure, describe the audit crcumstances in which the auditors are likely to

28. ## English

1. I like taking walks. 2. I like taking a walk. (Which one is OK? Are both right?) 3. You should obey the school rules. 4. You should keep the school rules. 5. You should follow the school rules. (Are all the same?) 6. He helped Mother who was sick in

29. ## spanish

Write a letter in Spanish in which you describe something that happened to you which required consulting a nurse, doctor or dentist. Include in your description: why you needed a particular medical service where you went to get it and what happened when

30. ## algebra

Graph the equation using the slope and the y- intercept y= 8/5x+5

31. ## Chem.

How do you name an ester? I know they end in -anoate. But when you have one like CH3-C(double bond to O going downward)-O-CH3, would it be dimethyl anoate? Thanks.

32. ## chem

how many grams of a precipitate will form when you mix 45 ml of a 3.5M silver nitrate solution with 45 ml of a 5.4 M magnesium chloride solution i sorted the problem but have no clue how to start

What is a frog's full scientific name?

34. ## AP Stat

how do you find the center of a histogram by just lookiing at it I find it hard just given the histogram because then you don't have actual values and estimases because of the scale of the histogram and calculate the median which is the center so i do you

35. ## English

1. My dog spoiled my homework. 2. My dog ruined my homework. 3. My dog torn my homework notebook. 4. My dog torn the notebook containing my homework. (Are all grammatical?) 5. My dog gave birth to 4 puppies. 6. My dog bore 4 puppies. (Are both OK? Do you

36. ## English

On "The Narrative of the Life of Frederick Douglass" (chapter 1) : Quote the law about children of slave women. What is the result of the law? How does it contradict the argument that God cursed Ham, therefore, slavery is justified? I know the story of

37. ## Symbiotic Relationships

I'm having some trouble thinking of examples for mutualism and parasitism in nature. If anyone has any links to help me read about some of those relationships, I would be very thankful. :)

38. ## Science

What makes up the scientific name of an organism? Why is it important to use scientific names rather than common names?

39. ## english - huckleberry finn

Discuss Huck's struggle with his conscience and how or if he qualifies asa herioc figure.

40. ## college

I don't get how to do this question, please help!! verify that r(r (x ) = r^-1(x ) if r( x) = 2x-7 / 4x-6

41. ## English

1. I'm excited because I get on the airplane for the first time. 2. This is my first trip abroad, so I am very excited. 3. I got off the airplane at the airport. 4. I waved on the laddle to the airplane. 5. I was excited because I could go abroad for the

42. ## Chem

Is CH(three bonds)C-CH2-CH3 1-butyne? Thanks for checking!

43. ## mary

The question is: a horizontal force of magnitude 22.0 N is applied to a 2.86 kg book as the book slides a distance d = 0.73 m up a frictionless ramp at angle θ = 30°. The book begins with zero kinetic energy. What is its speed at the end of the

44. ## Algebra

Match ABCDE with the solution set below A. {4/3, -4} B. {x|x > 4 or x < -4/5} C. No Solution D. {x| -11 < x < -7} E. All Real Numbers Solution set ABCDE|x + 9| < 2 ABCDE|5x - 8| > 12 ABCDE|3k + 4| = 8 ABCDE|x - 6| = -10 ABCDE|6x + 8| > -4

45. ## physics

The question is: a horizontal force of magnitude 22.0 N is applied to a 2.86 kg book as the book slides a distance d = 0.73 m up a frictionless ramp at angle θ = 30°. The book begins with zero kinetic energy. What is its speed at the end of the

46. ## Chemistry

I am trying to find the theoretical yield for this lab I am working on. The steps to finidng it would be great. In my lab I took 40mls of H2O + 4g of AgNO3+ 8g of NaCL then I stirred it and filtered in a buchner funnel to be left with 6.7496g of silver

47. ## grade 9 mathimathic optimizing

i am lost completly i don't know what to do. please help me!!!! a farmer is adding a rectangle corral to the side of a barn. the barn will form one side og the rectangle . the farmer has 16 m of fencing to use. conduct an investigation to determine the

48. ## Biology

Mutations to DNA cause changes in organisms. Explain why this might be importatnt to the survival of a species. Please help with this. I've tried but can't seem to find an adequate answer for this. Thank you very much!!!

49. ## financial management

What is the basic accounting formula?

HOW HAVE INTERNATION AGREEMENTS BETWEEN FIRST NATION TRIBES AND WASHINGTON STATE EFFECTED OUR STATE (WASHINGTON) IN THE PAST AND PRESENT?

51. ## Biology

In class I had to make an organism and explain how it adapts to it's imaginary environment. We have to explain the amount of food of eats everyday too. my teacher said that Theres a 10% rule to follow but I don't know what it is. Can u help? Do you know

52. ## biology

explain why a 100m runner has a bigger oxygen depth than a marathon runner. im lost please help

sugar is a compound that is not made of ions. will it form an acidic,an alkaline or a neutral solution when it is dissolved in water? please explain your answer for me!

54. ## economics

Is it possible for a female only 21 years old and 1 year of work experience to have an income of \$92560 US in the 1980s?

55. ## History

I am trying to find indepth information on the anti-federalists argument for states' rights. I know that it involved the states' rights concerning political, economic and military control. I can only find information that is way over my head. I am in the

56. ## Math

A) A rectangle has perimeter 64 cm and area 23 cm^2. Solve the following system of equations to find the rectangle's dimensions. length=23/width length + width = 32 B) Solve the system of equations x^2+y^2=1 xy=0.5

57. ## Science

Which direction do meridians run and what do they measure?

58. ## Chemistry

Are substances with an HO- Alcohols? What about items that are O-C with a O double bonded to the C and above it? Are they acids? Thanks!

59. ## Physics

Hello can some one show and exlpain to me the derivation of this formula? V = (Ft(mL^-1)^-1)^(2^-1) or simply V = sqrt (F/(m/L)) were V = the veloctiy of a piece of string Ft = the force of tension m = mass L = length Thank you!

60. ## science

Please help with comparing and contrasting osmosis and diffusion. Thank you! *Thank you Ms Sue for all of your help with my questions!!!

61. ## HIS115 U.S HISTORY TO 1865

hOW MIGHT THE GUTIERREZ MAP INDICATE WHERE NATIVE AMERICANS LIVED STRENGTHENED EUROPES CLAIM OF SOVEREIGNTY

62. ## English

1. I will become a farmer so that I may grow seedless big grapes. 2. I will become a farmer so that I may grwo big seedless grapes. (What do you think of the world order? Which one is right?)

63. ## English

1. Korea lost at the soccer game by 1:2. 2. Korea lost in the scooer game by 1:2. (Which preposition do we have to use? Are both right?) Responses English - Ms. Sue, Sunday, June 7, 2009 at 9:46pm We usually don't use any preposition. We say: Korea lost

64. ## chemistry

list three ions that are iso-electric with potassium +1 please explain i have no clue

65. ## Technology in Health Services

Imagine you work for a health care or human service organization that does not use an intranet. Write a proposal to management that lists the elements of an effective intranet, why each element is important, and the benefits of building an intranet as

67. ## ACcounting Ethics

3. Did Enron’s directors understand how profits were being made in this segment? Why or why not?

69. ## Science

Crustaceans grow by doing what?

70. ## Chem.

Is a substance written HO-C (with a double bond connecting the C to an O north of it)-CH2-CH3 Ethenoic Acid? Thanks!

71. ## psychology

How much time and energy should invest in making sure you aren't guilty of the self-serving bias?

72. ## Chem help

An equilibrium reaction which has K1 = 6.5 x 10¯2 at 100oC and has ∆Horxn = -49.5 kJmol¯1. What is the value of K at 250 oC? I can't get the right answer, which is supposed to be 6.68 x 10^-4. How does one do this? Thanks

73. ## spanish

can someone tell me how to write this sentense in spanish: A few months ago my teeth started hurting a lot. a unas mes ..tener dolor de muelas mucho something like that please help me thanks a lot!

74. ## spanish

how can i write this in spanish: I went to the dentist's office to get them checked hacer una excursión la oficina dentista .. please help me thanks a lot!

75. ## anonymous

what atoms usually form coordinate covalent bonds i couldn't find this anywhere also i just want to make sure is the electronegativity difference range for polar covalent bonds .4 - 2.1 paulings?

76. ## SCIENCE .

Where do sedimentary rocks originate? How are they formed? What are the three categories of sedimentary rocks? What are the distinguishing characteristics between the three categories of rocks?

77. ## marketing..

the Maturity stage has impacted or will impact on the product sales, profits, pricing, and marketing communication.with the ipod

78. ## marketing..

What alternative approaches to life cycle management would you suggest? for the ipod

79. ## earth/space science

How does length of the year change with distance from the sun?

80. ## Marine Biology

What zone is where most life exists?

81. ## Chem.

Is the number of branches or carbons more important when determining the boiling point of a substance? I have CH3-CH3 and C3-CH (with a branch leading upward to CH3)-CH3. Thanks for your help.

82. ## egypt

i am doing a book review on Egypt by i don't know how to write it so that it looks more proffesiomal. i would like some posted...... * tips * suggestions *ideas thank u

83. ## Science

One last question... How can energy from the sun transfer into your body? Thank you!

84. ## English

1. Korea lost at the soccer game by 1:2. 2. Korea lost in the scooer game by 1:2. (Which preposition do we have to use? Are both right?)

85. ## English

1. I am glad because my dog gives birth to four puppies. 2. I am glad because my dog gave birth to four puppies. 3. I was glad because my bog gave birth to four babies. 4. I was glad because my dog had given birth to four babies. (Which expressions are

In what ways do audience, purpose, tone, and structure affect the formatting of the memo and the paper?

87. ## marketing..

A prediction of the product’s decline in the marketplace.