# Questions Asked onDecember 17, 2007

1. ## Physics

A child sits on one side of a teeter totter of length 7.60 m, a distance of 49.7 cm away from the end of the beam. The child has a mass of 21.6 kg. Her mother has a mass of 43.6 kg. How far away from her end does she have to sit in order for the teeter

2. ## physics

A student librarian picks up a 2.2 kg book from the floor to a height of 1.15 m. He carries the book 8.0 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work does he do on the book? how do i do this??

3. ## physics

A student librarian picks up a 2.2 kg book from the floor to a height of 1.15 m. He carries the book 8.0 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work does he do on the book?

4. ## CHEMISTRY

1) hwhich steps in the life cycle of copper consume energy? for each step, can you explain the particular energy needs? 2) which life-cycle steps (such as the reduction of a mineral in an ore to produce platinum) require the use of other material? 3)how

5. ## Chemistry

Equation to show how it ionizes in aqueous solutions: example: HCLO4 HCLO4 + H2O---> H3O+ + CLO4- KOH Ba(OH)2 CsOH NaOH

6. ## Physics

Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally weightless. Take

7. ## Math

consider a triangle with vertices (a,b), (c,d), (e,f), with the area of the triangle b/2 a = area of an equilateral triangle with side length b c = length of diagonal of a cube with side length b a/c = the positive asymptote of the conic equation

8. ## Algebra II

If a bedroom set sells for \$10,000 and a living room set sells for \$18,000,determine the number of bedroom sets and living room sets that must be sold to maximize the amount collected. I'm not sure what I need to do to set this up.

9. ## math

which is the smallest unit of measurement? m, cs, km?

10. ## Algebra 2

If a bedroom set sells for \$10,000 and a living room set sells for \$18,000,determine the number of bedroom sets and living room sets that must be sold to maximize the amount collected. I'm not sure what I need to do to set this up.

11. ## Physics

Two 2.160 kg crystal balls are 0.870 m apart in the vertical direction. Calculate the magnitude of the gravitational force they exert on a 8.80 g marble located 0.260 m horizontally out from the center of a line that intersects the centers of the balls.

12. ## Math

A man goes into a store and says, " If you give me as much money as I have with me now, I will spend \$10.00 in your store." The proprietor agrees, and the man spends the money. He goes into a second store and again says, "If you give me as much money as I

13. ## Physics

A construction supervisor of mass M = 83.7 kg is standing on a board of mass m = 30.5 kg. The board is supported by two saw horses that are a distance of 4.50 m apart. If the man stands a distance x1 = 1.30 m away from saw horse 1 as shown, what is the

14. ## art

Why is Rembrandt oftern referred to as the first "modern artist?"

15. ## social studies

1st Amendment; freedom of religion Why is this amendment important to America? What are 2 examples of how the amendment protects the citizens?

16. ## Career Search

where can i find information in career field of mobile electronics?

17. ## math

Integrate: csc x dx

18. ## Statistics

Background: A machine cuts wood boards to a thickness of 25 millimeters with an accepter margin of error of +/-0.6 ml. (Assume process can be distributed by normal distribution.) The acceptable range of thicknesses for the boards is 24.4 ml to 25.6 ml,

19. ## science

how does the process work to extract hydroelectric power

20. ## art

Supermodel Tyra Banks uses Smooth & Soft bath gel; you should, too! Is this bandwagon? I think so.

21. ## studying

what are some good last minute studying tips?

22. ## math

Karen and Kate lookedata collection of stones. Karen said the ratio 2:3 represented the stones. Kate said the ratio 2:5 represented the stones. They were both right. Explain Why

23. ## math

Given: Polygon STUVW is similar to polygon XYZAB, XY= 32, YZ= 36, ST= 4c+ 2, TU= 5c+ 2 Find : ST and TU

24. ## science

i do not understand this question and how to anseer it, can someone please help? htt p://i12. tinypic. com/6k8ytdd.jpg the question is in the link because it has a graph that goes along with it that I do not understand, just take the spaces out of the

25. ## science

how are faults classfied

26. ## Math

need help with Equations: I don't understand what 4x-2x+4=x+10 I don't have a clue how to solve and check it. please help me

27. ## English 12

this question is based on the epic of gilgamesh. How important is Enkidu's role in the battle with Humbaba? please don't post links to sites..I checked everywhere already!

28. ## Language Arts

In the Holocaust book were reading the Nazis were planning on killing all the Jews before the Russians liberated them. Is this true? If so how were they going to plan the kills?

29. ## Algebra

Why are polynomials important based on the history of factoring and applications of them?

asked by Pls help!
30. ## science

i do not understand this question and how to anseer it, can someone please help? htt p://i12. tinypic. com/6k8ytdd.jpg

31. ## algebra trying again

Translate the following statement into an algebraic equaion. Let x represent the number. 6 times a number is 14 more than that number. I got 6x=x+14 Is this correct

32. ## Math

Please help! Suppose one girl saves \$10 every week. Another girl already has \$21 and saves \$3 every week. Write and solve an equation to determine when the two girls will have the saved the same amount of money. So far I have these expression for each

asked by Plse Help
33. ## History

AD 476 Fall of the Roman Empire in the West ends 800 years of Roman hegemony. The creation of moderen Europe begins. Is this event political, economic, religious, social, intellectual, artistic, or geographic and how is it important today? Thanks, Heather

34. ## chemistry

what are four uses of platinum? 2) for each use, what is an alternative material that could serve the same purpose? consider both conventional materials and possible new materials 3) what are some common metallic items that mighr be replaced by ceramic or

35. ## Social Studies

what is the name of the medieval political and social system, based on agriculture?

36. ## Physics

I still cannot solve this problem: Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the

37. ## Chemistry (materials / metals)

Please help with 5 questions: 1) what metals are the alternatives to platinum? 2) what are the advantages/disadvantages of these alternatives? 3) what is the life cycle of platinum? 4) how are the materials in your platinum and processes? (be sure to

asked by LISA AND MICHELLE IN LA
38. ## WW2

The evacuation of BEFs & France and Belgium forces from Dunkirk is know as Operation Dynamo. Was this name given after the operation or during the operation?

39. ## Not understaning what I need to do

I am writing a paper of the Society of The India people and one of the questions I need to answer is A clear differentiation between race and ethnicity in India? I am not sure I understand what I need to write Can any one give a better understanding what I

40. ## Psychology

I have to respond to this question in 200 words or more. What might happen when a boy plays with action figure dolls? How does this behavior fit into theories of development? I am studying Jean Piaget's theory of development so I am assuming I am supposed

41. ## chemistry

What is the main reason so many different molecules are made from carbon atoms?

42. ## Calculus

The slope of the tangent to the curve (y^3)x+(y^2)x^2=6 at (1.2) is??????????? Is the answer -1/2 or positive, or am i completely off?

43. ## Algebra

Translate the following statement into an algebraic equaion. Let x represent the number. 6 times a number is 14 more than that number. I got 6x=x+14 is that right?

44. ## art

Copley's expert rendering of _____ displayed a level of talent uncommon in 18th century America. Hair, Facial expressions, foliage, or cloth? I think it was foliage.

45. ## technical writing

how can i write a letter of autorization for a school cashier telling her that am authorizing my boyfriend to pick up my paycheck instead of me

46. ## english

What is AAABBB organization?

47. ## Science

The middle layer of the earth, made of solid, hot rock, is the what?

48. ## SCI 275

distinguishes between renewable and nonrenewable energy. · provides at least three methods for conserving energy and helping the environment. · discusses how the government can help with conservation efforts. I need help PLease

49. ## Math

If Steven rock climbs every 5 days and bikes every 3 days. If he runs and swims today how many days will pass until he runs and swims again on the same day?

50. ## WWII

Who were the Allied Powers during WWII?

51. ## social studies

what substance was used to stuff the nostrils of a mummy?

52. ## ENGLISH 3

discuss why the tittle The Crucible is an appropriate tittle for this play. Consider the roll of "Pressure" and its effects on the various charcters.

53. ## pre algebra 2

how do you make a guess and check table?

54. ## JOHN LOCKE QUOTES

i need john locke quotes on secession please and thank you. :)

asked by need help
55. ## social studies

what contributions didi the babylonians make to civilization?

56. ## Career

Where can i find information in the business area of scheduling & dispatching?

57. ## Nautical/Stability/GM

I have previously understood a ship's GM determined her role period. However I have just read that if weight on the centreline of the ship is moved laterally outwards to the sides of the ship this will slow the ships roll ie. increase its roll period. I

58. ## Ethics

Are human services or health care organizations expected to act in a more ethical manner than for-profit organizations?

59. ## WW2

Did any Canadians participate in the Battle of France?

60. ## WWII

If a soldier was to try to flee from a battle of do anything or that sort, what would their punishment be? (WWII)

61. ## art

Which artist was van Eyck's closest contemporary? Bosch, Van Der Weyden, Gruneweld, or Holbein? I think it was Gruneweld.

62. ## george washington

how many terms did george washington serve what did he do after he left office

asked by tiffany jasper
63. ## math

wat is1/2 plus 1/3

64. ## WWII

What was the airforce for the Candians called in WWII? Was it the RCA?

65. ## Memorization

How can i quickly memorize a passage from Julias Caesar? I have to speak it in front of class.

66. ## MATH

What is a spcialcase

67. ## math

If i have a number line and the numbers i am to place on it are -2,-1,0,1,2,2.3,3,4,5,sqrt of 8,and sqrt of 36, what would the order be?

asked by hayley golubski
68. ## english

What are "limiting words?"

69. ## WWII

What term did they use when I soldier itentionally injured himself to be removed from battle? And were could I find names of hospitals in Britain where soldiers were sent?

70. ## Math

List the first eight prime numbers.

71. ## chemistry

1) what alternative metals can be considered for platinum? 2) what are the advantages/disadvantages of these alternative metals? 3) how are the materials in wire/electronics obtained and processed? ( include redox equations in mining/refining steps) 4)how

72. ## Math

How do I identify coefficients, constant terms, and like terms of the expression?

73. ## chemistry

what properties of alloys make them an attractive option in the design of electronics? 2) what might modifying the surface of electronics be preferable? 3) what are benefits and drawbacks of using alloys versus using surface modification for electronics?

1. 5m+6=-4

75. ## intergrated science1

What are electrons circle atoms in regions called?

76. ## Linguistcs

When a person misspell a word in which part of linguistics he needs to work on syntax, morphology, phonology, or semantics?

77. ## project management

return the human resources to the organization