# Questions Asked onJanuary 29, 2009

1. ## physics

Air streams horizontally past a small airplane's wings such that the speed is 70.0m/s over the top surface and 60.0m/s past the bottom surface. If the plane has a wing area of 16.2m^2 on the top and on the bottom, what is the net vertical force that the

2. ## PreCalculus

Given vectors u=7i + 3j and v = -4i + 3j, find 5u-4v in terms of unit vectors. I am just beginning the study of vectors and have this problem. Could someone help? Thanks.

3. ## Physics

1.what is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a Petri dish at a constant speed of 3.5 mm/s. the answer is 24s. how? 3.An athlete swims from the north end to the south end of a 50.0m pool in 20.0s and

4. ## Physical Science

A 5.0kg textbook is raised a distance of 30.0cm as a student prepares to leave for school. How much work did the student do on the book?

5. ## Physics

In a front-end collision, a 1400 kg car that has shock-absorbing bumpers can only withstand a maximum force of 75 kN before any sort of damage occurs.If the maximum speed for a car that is nondamaged in a collision is 10 Km/h, by how much must the bumper

6. ## Physical Science

A force of 400.0 N is exerted on a 1,250 N car while moving it a distance of 3.0 m. How much work was done on the car?

7. ## College English

For my english class we have to write a paper about War as a social Disease? What does that mean? I really don't understand. We need different points about it so we can expand on the points. Thank you for your help.

8. ## chemistry

#2) Consider the preciditation reaction of a solution containing 3.50 grams of sodium phosphate mixed with a solution containing 6.40 grams of barium nitrate. How many grams of Barium phosphate can form? Ba(NO3 )2 + Na3 PO4 yields Ba3 (PO 4 )2 + NaNO3 #2b)

9. ## English

what are some verbs ending in ing for justice and injustice?

10. ## Science

What general appearance does a graph line have if the dependent variable does not change with time?

11. ## Chemistry

When burning a Magnesium Ribbon, would the color (the white dust) that it changed to be a chemical change? Or how about the spark it makes (I am just in basic chemistry, so that spark might be counted as a chemical change)? So far I got from the help for

13. ## Math

15a²b - 10ab² = I am trying to learn how to do factoring in Alg II

14. ## ENGLISH

is "open, unlidded eye of golden day!" a use of personification, metaphor, or neither?

15. ## A&P 1

research the effects of a stimulus or major physical change on body system structure and function, write a researched analysis of the physiological and structural effects of Regular physical fitness and exercise on body system integrity. Include a clear

16. ## chemistry

Compound C does not bind to the receptor as effectively as acetylcholine . Explain briefly why this might be the case. (Two or three sentences)(again if the post does not show right, two of the CH3 should be above and below the N^+ with a line directly

17. ## english

Metaphors 1. Love is a lemon-either bitter or sweet this is the only one i couldn't find an answer to please help me thank you.

18. ## Physical Science

I need to know what equations to use! (A)How much work is done moving a 2.0Kg book to a shelf 2.00m high? (B) What is the change of potential energy of the book as a result? (C) How much kineetic energy will the book have as it hits the ground when it

19. ## history

Hi jiskha! I am studying for a test on Latin America. I know the Helms Burton Act was to place an embargo on Cuban goods, but what was the other act that limited immigration? If I recall correctly, it allowed Cuban immigrants if they washed ashore, but if

20. ## social studys

where did the three fifths compromise take place?

21. ## geography

can someone please explain the what the functional and formal regions of a city are. Like Seattle washington, what am I supposed to be looking for to compare and list?

22. ## Math 115

What is the product of 225 and 507? What is the greatest common factor of 15, 30, and 45. 1,232 is what percent of 220? Estimate: WHat is 78.8% of 700? I do not this real good

23. ## math

how do you find the differential equation for t(dy/dt)+9y=8t and y(1)=6?

24. ## Social Studies

what was Sparta's government and economy?

25. ## Macroeconomics: GDP

John (who lives in "Statsyan"--nation) buys a new mini Cooper, which is assembled in England. What part of the GDP component(s) does this transaction belong to? I'm thinking it belongs to both the imports and consumption categories, but I'm not sure if it

26. ## general science

How many electron rings does carbon have?

27. ## general science

This gas is principally shipped and used in gaseous form for excimer lasers, light bulbs, window insulation, ion propulsion, medical applications and laboratory R & D.

28. ## calc

find f'(x) (sinx)^cosx

29. ## Chemistry

I was doing a lab today in chemistry, and I do not know if I got my measurements correctly. My teacher gave us a strip (probably 5inches) of Mg. We measured it, and then after that, we had to burn it, and measure the mass of it after it was burn. Would the

30. ## American Government

Hey guys could you please check this thanks. The directions are either the following statements are true or false. 1. ------ Article I of the constitution refers to the Legislative Branch. Answer: True 2. ----- Congress is made up of two chambers, the

31. ## Anthro

Discuss how football is a metaphor for American culture, think about all aspects of the game and the culture that surrounds it. What does it tell us about cultural values? Gender? Wealth? Social class? etc...

32. ## History

I am a bit confused about the differences between ethnocentrism and nationalism. Are they essentially the same thing? Thanks for your help!! ~Kaitlynne

33. ## Algebra

Solve. Pretend the paranpheses are absolute value bars. (t-7) + 3 = 4 I understand how to solve it, but what were your answers for a or a few "t"s? Thank you!

34. ## egypt

urgent!!!!urgent!!!!!! have to go to bruins game at 5:45whats the magical fiqures inbetween the rapping in a mummy?

35. ## science

what is thermal energy plz help me stuck!

36. ## Social Studies

What was the largest empire in eastern europe in 1900?

37. ## spelling

I need to write about soccer. I'm not a soccer playerand I do not know anything about it. Could you give me a couple topics for paragraphs. Thanks.

38. ## Science

Lately, is the humpback whale population increasing or decreasing?

my teacher wants me to find 3 common multiples for each pair, for example 15 over 30

40. ## SCIENCE

Why is it necessary for sponges to have pores?

41. ## U.S. History

NY had 12 electoral votes in 1792 how many representatievs did NY have in the Senate? how many in the House of Representatives. i know i've already asked this before. but i don't get it thankyou for helping

42. ## BIBLE

Why did God tell the Israelites not to eat pork?

43. ## Last chemistry post

Can someone please reply to my previous post about chemistry preferable DrBob since he was helping me on it, but anyone is fine.

44. ## SCIENCE

How are natural sponges harvested?

45. ## social studies

who was moses austin?

46. ## SCIENCE

How are animals different from protists and please compare the characteristics?

47. ## Botany/Science

Is a Sahara Mustard monocot or dicot?

48. ## SCIENCE

What materials are used to make cleaning sponges used for dishes?

49. ## SCIENCE STUDIES

Why is it necessary for sponges to have pores?

50. ## SCIENCE STUDIES

How are sponges harvested?

51. ## SCIENCE STUDIES

How are animals different from protists? What different characteristics do they have?

52. ## Science

how do you read graphs showing direct variation and inverse variation??

53. ## Math

You have a mean score of 86 on 9 quizzes. The teacher decides to drop your lowest quiz score to determine your final quiz mean. After dropping the lowest score, your mean score on the 8 remaining quizzes is 88. What score was dropped?

54. ## SCIENCE STUDIES

Why were sponges once considered plants?

55. ## Geography

Which islands on the equator are in the indian ocean?

56. ## Writing

I have had problems with writing sentences in the past, Please if you will tell me how these sentences reads to you! The(')represent my word i have to use in a sentence. 1. The confederates' works fot the president. 2. Te Usa army caused a invasion'on

57. ## hillhouse high

Pain is classified as what

58. ## religion

unscramble this trencsaamla . Clue : something smybolic that reminds us of Chrits's presences

59. ## parts of speech

Catching fish is one of the oldest pastimes. what part of speech is fish in the sentence. i think it's noun.

60. ## French

I want to say "I got an A on my history test." So I am going to say "J'ai eu "A" a mon interro histoire." This is the literal way to say it, but is this correct? Merci!

61. ## Algebra Question

Quadratic equations can be solved by graphing, using the quadrat completing the square, and factoring. What are the pros and cons these methods? When might each method be most appropriate?

62. ## marketing

Please check this to see if I am on the right track. Thanks for your help and time. Question Describe at least three activities that represents each characteristic of a Customer Relationship Management plan; share of customer, lifetime value of a customer,

63. ## bishop moore

If you put 25 cents in the bank and double it every year. How long will it take to have 1 billion

I have to write a persuasive letter to a major company about an issue that effects kids my age what should i write about

how does a dandelion and a deer alike?

66. ## U.S. History

Electoral Vote in 1792: At the Constitutional Convention, why did Virginia favor a plan by which states with larger populations would have more voting power in Congress than states with smaller populations?

67. ## HSM 270 human services

What does quantitative research and quantitative evaluation have to do with human services and why?

68. ## College Algebra

An amount of \$500 was invested in 1970 and the investment grew as shown in the following table. The average rate of change of the investment between 1975 and 1980 is ___ per year. Year 1970 1975 1980 1985 Capital 500 966 1856 3578

69. ## Math

Ray is setting the table for a birthday diner.He needs to set 12 places at a round table.he has 3 different kinds of plates:white plates; blue plates; and gold plates.How can he set the table so that no two of the same kind of plates are next to each

70. ## chemistry

-You have a sample of unkonw metal that you have heated to 100 deg Celsius (oC) in boilin water. If, unknown to you, the metal sample cools somewhat before being added to your calorimeter, what will be the effect on the delta T for the water in your

71. ## Math

Solve: x^2 + 30 + 5x + 24 = 90

72. ## Science

Write a theory and hypothesis. Define the concept and then state how you would measure the concept. Can you show me an example of one so I know what to look for when taking my test. Thank You

73. ## English

Similies 1. As innocent as a lamb Metaphors 1. Love is a lemon-either bitter or sweet 2.Life is a mere dream,a fleeting shadow on a cloudy day Idioms 1. a chip on your shoulder 2.a house divided against itself cannot stand can you tell me what each mean

74. ## DrBob+Thanks!

Drbob, your explanation is very clear and I learned alot out of it. I also have one last question to ask you. I posted it at my last post.

75. ## chemistry

A + B -> C + D (reversible reaction) a 2L container contains 1 mol of C, 1.6 mol of D, 0.8 mol of A snd 0.8 mol of B. Calculate the equillibrium composition of the reaction. Kc =0.065 I think C and D are forming A and B because there is higher

76. ## Maths B

Determaine the equation of the line containing each pair of points. Express your answers in the form: i) ax+by+c=0 and ii) y=mx+c: 1,1) (5,5)

77. ## Caplan

A virus-scanning program is checking every file for viruses. It has completed checking 40% of the files in 300 seconds. How long should it take to check all the files

78. ## s.s

Hey Guys! I had gone on vacation so I had missed the Inauguration of Barack Obama. Can you give me a summary of it, if you had watched it? Thanks!

79. ## significant figures

(2.34+7.9)/4.25 would this be 2.4 or 2.41?? would you do 2.34+7.9= 10.24/4.25=2.41 or would you say it's 2.4 b/c 7.9 only has 2 sig figs. or would you say 2.34+7.9 = 10.2/4.25=2.40

80. ## History

Ok i had to do some research and answer some questions about MLK. I did alot of them but couldn't find the rest so can someone help me please. 1.How would this speech be different if it was written from a third person point of view? Does it change the

81. ## CALC Help

The total area enclosed by the graphs of y=6x^2–x^3+x and y=x^2+5x is???

82. ## College sociology

Why do sociologists claim their knowledge is better than common views of society and society issues? How would a sociologisy most likely respond to someone who says " The facts speak for themselves". Statement A or B and support your answer. A. Because

83. ## CALC URGENT

find the area enclosed by the curves y=absolute value of x and y=x^2+2

84. ## calc

Find the total area enclosed by the curves y= absolute value of x; y=x^2–2

85. ## Statistics

Central tendency is to ________ as mean is to standard deviation. This is in a crossword puzzle. _ _ R _ A _ _ _ _

86. ## Math

Julia wants to build another garden wall, 10 bricks long and 3 bricks high. Can she build it with red and white bricks, so that no two bricks of the same color are next to each other? r w r w r w r w r w w r w r w r w r w r r w r w r w r w r w I say yes.

x/2-x/3=5

88. ## math

Find the ratio. 2.4 m to 64 m

89. ## Economics

From 1962 to 1965, federal spending on non-defense-related education and training rose from \$9.6 billion to \$19.5 billion, while from 2001 to 2004, it rose from \$178.4 billion to \$217.5 billion. Given that the Consumer Price Index ( in January) was 30.0 in

90. ## math

how do you round off each factor so that only one digit is not zero

Give 10 differences between vintage cars and modern cars?

92. ## Lenses

If you were to use a green laser beam to measure the focal length, would you get the same value? Does your answer bear on chromatic aberration in which a white object is focused as a somewhat blurred color image? If two lenses have exactly the same

93. ## chemistry

What is the relationship between the molar mass of Ne, Ar, Kr, and Xe and the melting points of their solids?

94. ## chemistry

A + B -> C + D (reversible reaction) a 2L container contains 1 mol of C, 1.6 mol of D, 0.8 mol of A snd 0.8 mol of B. Calculate the equillibrium composition of the reaction. Kc =0.065 I think C and D are forming A and B because there is higher

can you give me some good examples of functional design for a health care power point I am doing?

must there be an unbalanced net force acting on any moving object?

97. ## sci 241

food and drug manufacturers be allowed to mislead consumers by using uncommon terms and descriptions to mislead or deceive consumers or should they be required to use "layman" terminology that almost all consumers can understand? Please support your

98. ## COM 135

Post your response to the following: What is the most effective prewriting technique for your final project? Explain why you chose this prewriting technique.

99. ## Math

Find all sets of integers {x,y,z} such that when any one of these numbers is added to the product of the other two numbers, the result is always 2.

101. ## Biology

What structures of the embryonic and adult anatomy of manatees and elephants establish the evolutionary relationship between these two animals? manatees evolved from elephants..or elephants evolved from manatees

102. ## theology

what is modern theism?

103. ## ochem

Calculate the amount (volume) of 5.25% (wt./vol.) NaOCl solution (commercial bleach) required to oxidize 100 mg of 9-fluorenol to 9-fluorenone. Whenever appropriate, use balanced chemical equations as a part of your calculation.

104. ## Math 115

write the ratio of 5 2/3 to 6 simplest form. = 17/3 *6 =34. Is this right I think so but let me know

I have to do an essay in spanish, but I need 150 words, and I only have 138. Can someone tell me how to say "my favorite band is" or "my favorite movie is" in Spanish? Or, can you give me ideas of what to include in my essay?

106. ## english part of essay

Please correct my grammar and sentences Wordsworth used many symbolisms in this sonnet in order to make the readers feel strongly about this matter and to feel what Wordsworth himself felt. He used strong diction and powerful details to get his point

107. ## History

I always get the Hutus and the Tutsis from Rwanda confused. Which was the group favored by the Dutch, and which was the group who initiated the genocide?

108. ## Trig

Can someone check my answers so far? 1. Find the exact value of tan(-3ð) Answer: tan(-3ð) = tan (-3 + 2ð) = tan (-ð) = tan (-ð + 2ð) = tan(ð) = sin (ð)/cos(ð) = (0)/(-1) = 0 Exact value is 0 2. Solve triangleABC is C = 90 degrees, B = 20 degrees,

109. ## algrebra

If the subway travels and average speed of 45mph and it allows you to get to work at 8:30, when you leave your house at 7:45. One day the subway was having problems and could go 35mph. how early would you have to leave your house to make it to work on

110. ## math

help i have a graph that shows the finishing times of the first 5 runners in a 10k race time in min on the graph 0 to 34 and the intervals are 5 question is what two runners were 0.25 min apart

111. ## Ms.Sue

Thank you very much for your time and the website.

112. ## Calculus

A ball is thrown from the origin of a coordinate system. The equation of its path is y = mx - e^2m/1000 . x^2, where m is positive and represents the slope of the path of the ball at the origin. For what value of m will the ball strike the horizontal axis

113. ## english

please paraphase this so i don't plagerize. Nazi dictator Adolf Hitler has annexed Austria and sections of Poland, Czechoslovakia, and France, creating what he called "Greater Germany".

114. ## Math 115

8/26=m/13 104/26 m=4 Check this problem please

115. ## math

what is 0.25 min

116. ## Healthcare

I am having a hard time trying to answer these questions and searching the web for what are the pros and cons of managed care from a consumer’s perspective? A caregiver’s perspective? From the perspective of a caregiver, would you prefer traditional

117. ## math

so does that mean 0.25 equal to seconds

118. ## math urgent...:(

Write the equation of a line perpendicular to 2y=3x+4 and passes through the point (7,-2). Please help me i have no idea in this. and please4 explain me how you did it. thanks.

119. ## math

how do you find the function to satisfy y'-2y=2e^(3t) and where y(0)=-5?

120. ## algebra

Solving Systems by Substitution: 2. x=1-4y 2x+7y=3 I need help learning how to do this problem step-by-step

121. ## psycholog

The DSM-IV The DSM-IV is an important tool for clinicians. It provides a standard for diagnoses to be standardized across psychology; however, the DSM-IV is not as precise for diagnosing personality disorders as some psychologists would like. Give an

122. ## Sociology (of Deviance)

What does C.W. Mills' idea of "Sociological Imagination" entail? How is it scientific? According to Higgins & Mackinem, what is deviance and who is deviant? Mainly, who/what is NOT deviant?

123. ## math

how do you find the solution to (dy/dx)+ycos(x)=6cos(x) when the initial conditions y(0)=8? all i can get is y(x)=e^sin(x) + 7

124. ## Social Studies Aspirin Project

When/ where/ why was Aspirin invented? Who thouht of it? Does anyone have good project ideas? I think I might make the poster in a pill shape and put on an empty box of Aspirin but I'm not sure.