Questions Asked on
January 29, 2009

  1. 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?

    asked by Misty T
  2. 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

    asked by Harold
  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

    asked by y912f
  4. 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.

    asked by Joanie
  5. 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

    asked by Candy
  6. 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

    asked by Jaime
  7. 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)

    asked by lyne
  8. 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.

    asked by Jazmin
  9. 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

    asked by Brett
  10. 8th grade science

    how does a dandelion and a deer alike?

    asked by CKLAIR
  11. 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

    asked by kristine
  12. 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

    asked by Totally Lost!!
  13. 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?

    asked by Misty T
  14. 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

    asked by Blind
  15. 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?

    asked by Ryan
  16. Science

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

    asked by Angie
  17. 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.

    asked by Anna
  18. 7th grade spanish

    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?

    asked by Mike
  19. algebra

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

    asked by Ashley
  20. egypt

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

    asked by lilgeeny245
  21. 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.

    asked by kool
  22. 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,

    asked by jay jay
  23. 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

    asked by jeff
  24. calc

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

    asked by salina
  25. 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

    asked by jeff
  26. 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

    asked by trigger
  27. Social Studies

    what was Sparta's government and economy?

    asked by Kari
  28. 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

    asked by Lemar
  29. 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

    asked by Tory
  30. CALC Help

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

    asked by salina
  31. Math

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

    asked by Jennifer
  32. calc

    find f'(x) (sinx)^cosx

    asked by Anonymous
  33. 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...

    asked by Anonymous
  34. english 6th grade

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

    asked by lisa
  35. 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

    asked by Chopsticks
  36. 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,

    asked by Kasey
  37. 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

    asked by thelma
  38. 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

    asked by Shealyn
  39. 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

    asked by Chopsticks
  40. Social Studies

    What was the largest empire in eastern europe in 1900?

    asked by Mishelle
  41. religion

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

    asked by chris
  42. HSM 270 human services

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

    asked by dianne
  43. 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)

    asked by *Jess*
  44. 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

    asked by Julie
  45. 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

    asked by Anonymous
  46. 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

    asked by Anonymous
  47. 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".

    asked by ally
  48. 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

    asked by alice
  49. math

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

    asked by alice
  50. general science

    How many electron rings does carbon have?

    asked by Anna
  51. 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.

    asked by Chopsticks
  52. SCIENCE

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

    asked by Terrae
  53. Botany/Science

    Is a Sahara Mustard monocot or dicot?

    asked by Gaby
  54. 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?

    asked by David
  55. History

    I need to know alot about James Madison, the Fourtyh President.

    asked by Kelsie
  56. 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.

    asked by Chopsticks
  57. 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!

    asked by Hazel Smith
  58. 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

    asked by Michele
  59. CALC URGENT

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

    asked by salina
  60. ENGLISH

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

    asked by SMITHly
  61. 4th grade

    Give 10 differences between vintage cars and modern cars?

    asked by Shantanu
  62. chemistry

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

    asked by Katie
  63. 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

    asked by Meshelle
  64. 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

    asked by Shannon
  65. theology

    what is modern theism?

    asked by cathia
  66. math

    what is 0.25 min

    asked by thelma
  67. 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

    asked by melissa
  68. 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.

    asked by Michele
  69. 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

    asked by Baby Girl 2122
  70. History

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

    asked by Kaitlynne
  71. 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!

    asked by Jackie
  72. SCIENCE

    Why is it necessary for sponges to have pores?

    asked by Terrae
  73. SCIENCE

    How are natural sponges harvested?

    asked by Terrae
  74. social studies

    who was moses austin?

    asked by michelle
  75. SCIENCE

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

    asked by Terrae
  76. SCIENCE STUDIES

    Why is it necessary for sponges to have pores?

    asked by Terrae
  77. SCIENCE STUDIES

    How are sponges harvested?

    asked by Terrae
  78. Science

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

    asked by Angie
  79. SCIENCE STUDIES

    Why were sponges once considered plants?

    asked by Terrae
  80. 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!

    asked by Marissa
  81. Math

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

    asked by Jack
  82. 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.

    asked by Smiley
  83. business

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

    asked by april
  84. 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.

    asked by alex
  85. 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

    asked by PJ
  86. 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.

    asked by steve
  87. 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?

    asked by Spencer
  88. 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?

    asked by Heather
  89. 6th grade math

    if a shirt is 45 % off and the sale price is 114.95-what is the original cost? please help me with this formula

    asked by abbie
  90. social studys

    where did the three fifths compromise take place?

    asked by cody
  91. 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

    asked by Johnnie
  92. 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

    asked by Anonymous
  93. English

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

    asked by Anonymous
  94. science

    what is thermal energy plz help me stuck!

    asked by Alex
  95. 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.

    asked by Anya
  96. Science

    Lately, is the humpback whale population increasing or decreasing?

    asked by Angie
  97. 6 grade math

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

    asked by aryanna
  98. 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

    asked by y912f
  99. BIBLE

    Why did God tell the Israelites not to eat pork?

    asked by Terrae
  100. SCIENCE STUDIES

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

    asked by Terrae
  101. Geography

    Which islands on the equator are in the indian ocean?

    asked by Jimmy
  102. hillhouse high

    Pain is classified as what

    asked by shari
  103. 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?

    asked by pj
  104. bishop moore

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

    asked by Kate Farley
  105. 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?

    asked by y912f
  106. 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

    asked by Gayla
  107. 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

    asked by Smiley
  108. 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

    asked by Kayla
  109. 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

    asked by Jazmin
  110. 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

    asked by mylinh
  111. Statistics

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

    asked by Anonymous
  112. math

    x/2-x/3=5

    asked by Mildred
  113. math

    Find the ratio. 2.4 m to 64 m

    asked by ritu
  114. math

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

    asked by lorenzo
  115. 9th grade

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

    asked by polly
  116. 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.

    asked by Adebayo
  117. chemistry

    Compound B is acetylcholine, a neurotransmitter found in the human body. It binds to receptors, leading to nerve stimulation. (in case this post does not show correct, two of the CH3 should be above and below the N^+ , AND THE O should be above the C)

    asked by trigger
  118. 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

    asked by elaine
  119. Ms.Sue

    Thank you very much for your time and the website.

    asked by Shannon
  120. Math 115

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

    asked by Johnnie
  121. 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

    asked by Kia
  122. math

    so does that mean 0.25 equal to seconds

    asked by thelma
  123. 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.

    asked by veronica
  124. math

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

    asked by alice
  125. 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.

    asked by Twilight lover
  126. business management and leadership

    Suggest and summarize in-depth, how the team will plan, organize, lead, and control to achieve the goals of a successful training guide.-

    asked by jodie