Questions Asked on
October 29, 2007

  1. Chemistry

    A bullet weighing 235 grains is moving at a speed of 2.52 X 10^3 ft/s. Calculate the kinetcic energy of the bullet in joules ahd in calories. One grain equals 0.0648 g. Can someone help me out on this please K. E.= 1/2 mv2 . Convert m to kg Convert ft/sec

    asked by Lauren
  2. Algebra II

    A train left Podunk and traveled north at 75 Km/h. Two hours later, another train left Podunk and traveled in the same direction at 100 km/h. How many hours had the first train traveled when the second train overtook it?

    asked by Alan
  3. Statistics

    The International Olympic Committee states that the female participation in the 2000 Summer Olympic Games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathlon being added to the Games. Broadcasting and clothing

    asked by LT
  4. Chemistry

    Hydrogen sulfide, H2S is a foul smelling gas. It burns to form sulfur dioxide. 2H2S +3O2 ----> 2N2 +6H2O Delta H=-1036kJ Calculate the enthalpy change to burn 26.7 g of hydrogen sulfide.

    asked by Lauren
  5. Chemistry

    if you could just help me set them up the would do me some good. Thanx A. In the single reaction of chlorine and potassium bromide, how many grams of potassium chloride can be produced from 200.g each of chlorine and potassium bromide? Identify the

    asked by Monte'
  6. Statictics

    6. In 2000, the United Nations claimed that there was a higher rate of illiteracy in men than in women from the country of Qatar. A humanitarian organization went to Qatar to conduct a random sample. The results revealed that 45 out of 234 men and 42 out

    asked by LT
  7. Physics

    "It takes a force of 109 N to lift a stone straight up. This force gives the stone an acceleration of 12 m/s^2. Calculate the mass of the stone." My physics teacher tried to explain this problem to us, but he explained it so confusingly that I still don't

    asked by Emily
  8. Elementary Statistics help

    It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot. a. Describe the sampling distribution for sample proportion by naming the model and telling its

    asked by LT
  9. Chemistry

    6ClO2 + 3H2O -> 5HClO3 + HCl a) If 71g of ClO2 is mixed with 19g of water, what is the limiting reactant? b) What mass of HClO3 is expected in part (a)? c) How many molecules of HCl are expected in part (a)? I completed part a and b but got stuck on part

    asked by Marty
  10. CHEM

    Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g) + 13O2(g)->8CO2(g) + 10H2O(l) At 1.00atm and 23*C , how many liters of carbon dioxide are

    asked by K
  11. Chemistry

    Hydrogen H2, is used asa rocker fuel. The hydrogen is burned in oxygen to produce water vapor. 2H2 + O2 ----> 2H2O Delta H= -484 kJ What is the enthalpy change per gram of hydrogen.

    asked by Lauren
  12. Physics..please help

    A car is traveling at 20m/s when it pulls out to pass a truck that is traveling at only 18m/s. The car accelerates at 2.0m/s^2 for 4.0 s and then maintains this new velocity. First it asked me to calculate the distance during acceleration so I used d =

    asked by Alex
  13. English

    What are similarities and differences of Sea and Prairie?

    asked by Hannah
  14. economics

    Tell whether each of these expenses of a textile mill is a fixed cost or a variable cost, and why. (a) repairs to a leaking roof (b) cotton (c) food for the mill's cafeteria (d) night security guard (e) electricity

    asked by anonymous
  15. History

    Why were the swahili traders in the east a threat to King Leopold's Congo?

    asked by amber
  16. Algebra

    The larger of two positive integers is five more than twice the smaller integer. The product of the integers is 52. Find the integers. Must have an algebraic solution.

    asked by Thomas
  17. History

    Why are drought desertification and overpopulation among the causes for the crisis/conflict in darfur? What is the connection of genocide and ethnic cleansing to darfur?

    asked by anonymous
  18. Statictics

    2. Herpetologists (snake specialists) found that a certain species of reticulated python have an average length of 20.5 feet with a standard deviation of 2.3 feet. The scientists collect a random sample of 30 adult pythons and measure their lengths. In

    asked by LT
  19. Help

    The countries of Europe report that 46% of the labor force is female. The United Nations wonders if the percentage of females in the labor force is the same in the United States. Representatives from the United States Department of Labor plan to check a

    asked by LT
  20. physical science

    An elevator lifts passengers 30m in 24sec. The power is 15,000W. What is the total weight of the elevator and passengers?

    asked by September
  21. Global warming

    1) Explain the effect of clouds on global cooling. 2) Describe the relationship between carbon dioxide levels and deforestation. 3) Explain how rising global temperatures are connected to rising sea level.

    asked by jason
  22. math

    Alfonso knows that the distance across the field from his home to Carla's home is 50 meters. A nice place to pick flowers is 40 meters directly east of his home and directly south of Carla's home. How far from Carla's home is the flower-picking spot?

    asked by Mary
  23. Global warming

    Explain the effect of clouds on global cooling Describe the relationship between carbon dioxide levels and deforestation. Explain how rising global temperatures are connected to rising sea level.

    asked by jason
  24. physics

    The path of a projectile fired at a 30 degree angle to the horizontal is best described as 1.parabolic 2.linear 3.circular 4.hyperbolic

    asked by lin
  25. reading

    can you please help me unscramble these words vamsels----veeyttitina and swypl thank you

    asked by madison
  26. women studies

    Hello, I need help in finding some answers to this question? How are families both places of comfort, security, and nurture, and at the same time places of domination, conflict, and violence. Thanks

    asked by Beth
  27. Maths

    3 part question. 1. 4 peaches and 3 grapefruit cost £1.30. Write down an algebraic equation to illustrate this. 2. 2 peaches and 4 grapefruit cost £1.20. Write down an algebraic equation to illustrate this. 3. Find the cost of 3 peaches and 2 grapefruits

    asked by Gavin
  28. world history

    Does this sound good so far? i need an opinon I researched the genocide in Rwanda for my paper. In Rwanda, there are two major groups: The Hutu and the Tutsi. Even though the Hutu mad up 90% of the population in Rwanda, the Tutsi were basically the

    asked by kelsey
  29. Economics

    Sorry, it's long. I've tried everything to solve this, I have no clue how they got any of the MR figures, I calculated MR and I got 0.5. Help please. * A drug company currently sells 3 million AIDS treatments in rich countries at P = $80 per treatment. *

    asked by Nathan
  30. science

    Name on example of each: ecological rehabilitation ecological mitigation ecological reclamation Please and thanks!

    asked by Charlotte
  31. math

    A 5% alcohol solution is mixed with 15% alcohol solution to make a 25mlof a 9% solution. How much of each alcohol solution is used?

    asked by elisa
  32. About previous Physics post/answer from Bobpursely

    So do you mean to say....Ferris wheels use motors, therefore meaning that electrical energy is present. Electrical energy from the motor is then turned into kinetic energy. Electricity, generated from a switch and wires, travel through the motor which

    asked by Serena
  33. math

    Solve the following equations giving any roots in terms of pi in the .......? interval -2pi ≤ 0 ≤ 2pi. a) 2cos²Θ + sin²Θ = 0 b) 2cos²Θ + sin²Θ = 1 c) 2cos²Θ + sin²Θ = 2

    asked by raj
  34. science 6th grade

    Q1: What rock comes before quartzite in the rock cycle? What rocks or rock could come just after quartzite in the rock cycle? Q2: A geologist finds a course grained rock with crystals arranged in rows. What can the geologist infer about how this formed and

    asked by Wali
  35. Chemistry

    If a question in the exam comes and asks me For Example what is the relative formaula mass of Copper Oxide Aluminiuim oxide Carbon Dioxide Is there a concept about the oxides or how do we work out the formula ?

    asked by Ernest Rutherford
  36. Physics

    the hubble telescope has a mass of 1.5 x 10^4 kg and its orbiting the earth 596 km above the ground surface.the earths radius is 6.38 x 10^3km. CAlculate a)the force of gravitation on the telescope due to the earth's pull. given: G=6.67 x 10^-11Nm/kg and

    asked by johnny
  37. for Drbob222

    how do I calculate pressure exerted by H2 in a Mg and HCl reaction? (weighing by redox)

    asked by Rebecca
  38. Calculus Check

    A survey of one thousand people found that 70% of the people have a CD player, 85% have a telephone, and 45.2% have a computer. At least how many people have all three objects? Is the answer 152?

    asked by Matt
  39. ENGLISH 11

    where are you going my mother asked you know you have to tell me where you're going before you go out i'm going out i replied where my mother demanded i'm just going to hang out with some friends.i need to know exactly where you're going and who you're

    asked by ERIC
  40. economics

    A firm has two factories, one twice as large as the second. As the number of workers at each factory increases, which factory will experience diminishing returns first?

    asked by anonymous
  41. economics

    Output Fixed Cost Variable Cost 1 $5 $10 2 $5 $27 3 $5 $55 4 $5 $91 5 $5 $145 (a) What is the total cost when output is 2? (b) What is the marginal cost of the third unit? (c) How much should this firm produce if the market price is $24?

    asked by anonymous
  42. American History

    Describe the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980s. I'm having trouble catagorizing "social", "political" and "economic".

    asked by Gwen
  43. physics

    A 2000 kg car negotiates a curve of radius 40.0m on a level road. The static friction coefficient between the tires and the pavement is 0.7. Calculate the maximum force of static friction for the car and the maximum speed with which it will be able to

    asked by johnny
  44. physics

    A 3.3 kg wooden block is placed on 22 degree inclined plane and is connected by a string that passes over a light friciton less pulley at the top of the incline and then attached to a hanging 3.0kg block.If the coefficient of static friction bet the 1st

    asked by Sam
  45. Math

    I need help with these questions: Copy the equations. Add brakcets to make each one true. a) 7 - 5 to the 4th power divided by 8 = 2 b) 3 x 2 - 5 to the 10 power = 1 c) 39 - 4 + 6 divided by 3 to the 2nd power = 3

    asked by Sandra
  46. Lunch

    What should i take for lunch tomorro? i get hungry lots

    asked by Emma
  47. ib math studies

    i need a project idea for the internal assesment project. I want it to do something with sewing, like using equations in making a garment.

    asked by Yousra
  48. human risk assessment

    Equal concentrations of heptachlor, a known human carcinogen, are found at two different sites. (a) The incremental risk is the same at the two sites (b) The incremental risk is different at the two sites (c) The incremental risk at the two sites might be

    asked by Thano
  49. physical science

    An elevator lifts passengers 30m in 24sec. The power is 15,000W. What is the total weight of the elevator and passengers?

    asked by September
  50. bones

    how many bones does a teenager have?

    asked by Anonymous
  51. World History

    what are the most important events that happened in the genocide in rwanda?

    asked by HELP PLEASE!
  52. Chemistry

    with a platinum catalyst, ammonia will burn in oxygen to gove nitric oxide NO. What is the enthalpy change for the following reaction? NO + 3/2 H2O -----> NH3 + 5/4 O2

    asked by Lauren
  53. english

    How do I know if a syllable is stressed or unstressed?

    asked by Derek
  54. Chemistry

    Is the relative Formula mass for Aluminium Oxide simply : Al = 27 , O = 16 27+16 = 43?

    asked by Disney man
  55. maths

    The diagram shows part of a regular polygon. work out how many sides the polygon has. (it is 156 degrees).

    asked by corinna
  56. chemistry

    for a manometer flask diagram, if ha = 134 mm, how do I convert to torr, Pa, and atm with the right amount of sig figs? Related to sig figs, how do I get the right amount of sig figs (which is 2) with 8339?

    asked by Avonlea
  57. spanish

    Cambie las frases en el presente a mandatos familiares. Incluya los pronombres cuando sea posible. MODELO: No comes los dulces. -> No los comas. 1. Tienes prisa. 2. Te duermes temprano. 3. Haces la cama.

    asked by Pat
  58. Math

    what is 10^-2? 10 to the power of negative 2

    asked by Mary
  59. Science repost for iiii

    science - iiii, Monday, October 29, 2007 at 8:08pm What test would you need to perform to prove that it is the combination of glucose and the Glucose Indicator Solution that changes color when heated and not just the glucose or the Glucose Indicator

    asked by Ms. Sue
  60. math

    Sorry the question didn't come out right. It was supposed to read. 9k + 6 is < or equal to 39.

    asked by Ellen
  61. History

    explain how the European desire for profit affected the people of the Congo.

    asked by amber
  62. FRENCH

    Last part of the story.. can someone proofread? Thanks! Especially to SraJMcGin! Le Grinch restant a indiqué Markey le suivre et il l’a conduit à une pièce avec aucunes fenêtres et aucuns sols. La pièce était remplie à ras bord des fées et des

    asked by Jo
  63. english

    what are examples of fate? like movies/books one example is Final Desitnation 3 does anybody have any other ones?

    asked by helpp me!
  64. maths

    The population of a country is 10 million in 1997 and increasing at a rate of 0.6 million per year. The average annual income of a person during 1997 was 16000 dollars per year and increasing at a rate of 800 dollars per year. How quickly was the total

    asked by anshu
  65. math

    How would you express f(x) = cos3(x) in terms of first powers only? Please explain the steps

    asked by raji
  66. math

    For what values of s will the limit of x approach infininty for lnx/x^s.

    asked by popy
  67. math

    1. 4x^2-13x=12 I need to solve this problem by factoring or using the quadtratic formula. I am stuck when using the quadtratic formula method. Please advise how to do this. 2. 5x^2+42=0 How many roots exist in this equation and what type are they?

    asked by bob
  68. Spanish

    Question #3 Cambie las frases en el presente a mandatos familiares. Incluya los pronombres cuando sea posible. MODELO: No comes los dulces. -> No los comas. 1. Tienes prisa. 2. Te duermes temprano. 3. Haces la cama.

    asked by Pat
  69. calculus

    For a function f, let f*(x) = lim as h→0 be [f(x+h) - f(x-h)]/h a) Determine f*(x) for f(x) = cosx b) write an equation that expresses the relationship between the functions f* and f` where f` denotes the usual derivative of f

    asked by Anonymous
  70. for Drbob222

    thanks but i do need help to solve the third part also, I did get these equations but don't know how to put them together to solve the third. thanks for helping further!

    asked by Gavin
  71. Algebra

    A tcar left Purm and traveled west at 70 km/h. Two hours later another car left purm and traveled east at 90km/h. How many hours had the first car traveled when they were 1420 km apart?

    asked by Tom
  72. math

    Is the greatest common factor of 4xsquared ycubed, 18xysquared answer - 2xysquared?

    asked by Tabby
  73. Math

    factor each expression completely. if possible. Just checkin the * Ones 1. x^2+19X+90 * 2. x^2-16X+55 * 3. x^2-^6x-91 * 4. x^2+28x+195 * 5. x^2-29x+204 6. x^2+3x+154 7. 2x^2-5x-42 8. 3x^2-13x+12 9. 5x^2+43x-18 10. 6x^2+29x+35 Solve each equation 31.

    asked by Monte'
  74. math

    2y^2+15y+7

    asked by melissa
  75. math

    For the following problem we are asked to find an equation for the conic that satisfies the given conditions: 1. Ellipse, foci (0, -1), (8, -1), vertex (9, -1) For the solution I got: [(x – 4)^2]/25 + [(y + 1)^2]/3 = 1 Is this correct?

    asked by suri
  76. math

    dwrs can you show your work? Can figure out who you got the 3?

    asked by Ellen
  77. economics

    How does a firm calculate marginal cost?

    asked by anonymous
  78. math

    3x+4(x-8)-x=3/5(10x+15)

    asked by asi
  79. finance

    why is WACC important to an organization? b. What impact does WACC have on capital budgeting and structure?

    asked by kim wilson
  80. math

    How would you express f(x) = cos3(x) in terms of first powers only? Please explain the steps

    asked by Anonymous
  81. Chem

    I don't get how to do this: What is the pH of the solution created by combining 11.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? What are the pH values if you take into account that the 8.00 mL of

    asked by Anne
  82. Social Science

    What are the most important facts to include when writing an essay on the genocide in Rwanda?

    asked by kelsey
  83. Health

    When people with diabetes get injured(break a bone, get scraped,etc.) why does it take longer for their wounds to heal compared to someone without diabetes?

    asked by Molly
  84. english

    I'm writing 'actor's notes' for act 2, scene 4 of 'Twelfth Night' Orsino- And what's her history? Viola- A blank, my lord. She never told her love, But let concealment like a worm i'th'bud Feed on her damask cheek. She pined in thought, And with green and

    asked by Anonymous
  85. Physics

    Continue...previous question b)what normal force would the car experience on the top of a circular hill of radius 20.0m when it reaches the near horizontal section of the vertical curve with a speed of 12.0 m/s ? Draw app. free body diagram.

    asked by johnny
  86. English

    In what stories have characters claim the accomplishments of another?

    asked by kelly
  87. Science

    Combined with coal,this element is used in weapons?

    asked by Tesse
  88. Math

    Would a scatter plot relating to the number of sweaters you own and your age have a positive or negative

    asked by Tabby
  89. spelling

    not a smile, but a

    asked by Zack
  90. MATH

    how do you make a circle graph?what are the steps?i am a grade 7 student,I need help. Thanks

    asked by ADRIANA
  91. graphs

    If I have info. that fits into distinct catergories and want to compare totals what kind of graph should I use? A bar graph?

    asked by Riley
  92. math

    draw a shape that can be modelled by the expression 5 x 3 - 2 to the 2nd power. Write a problem for the expressin and evaluate it. Help.....please....!!! ;-(

    asked by Sandra
  93. math

    Low-voltage lighting is a popular feature of landscaping. Two pathways meet at 30 degrees to each other. One pathway has the lighting, and the first light is placed where the two paths meet. The distance between successive lights is 5m, and each has a

    asked by liz
  94. social studies

    In most countries, what is the main responsibility of the government to create?

    asked by Kira
  95. science

    5 reasons that the eagle helps the ecosystem?

    asked by Madi
  96. Math

    9k+6

    asked by Ellen
  97. history

    How were ehtnic groups in the Central African region distinguished?

    asked by amber
  98. trigiometry

    what is the basic unit in trigiometry

    asked by amber
  99. business

    Why do you think some investors choose to buy index options?

    asked by ajo
  100. science

    what is the word for " to move freorm one object to another

    asked by naureen
  101. Social Studies

    Any sites on Bishop Tutu?

    asked by Samantha
  102. science

    Explain the main factors that affect the Earth’s temperature.

    asked by jason
  103. s.s

    what were the perspectives of the loyalist in the boston tea party

    asked by Anonymous
  104. math

    Find the integral of:? i) ∫[(e^[-x]) / (-3e^[-3x] - 3e^[-2x])] and ii) ∫[(e^[-2x]) / (-3e^[-3x] - 3e^[-2x])]

    asked by rasi
  105. social studies

    need help on a speach about a leader with strong will

    asked by :-)tegz eibz
  106. maths

    Waht is 12 to the power 12 and a half

    asked by Thamiline
  107. ENGLISH

    WHAT ARE EXAMPLES OF ARISTOTELIAN TRAGEDY ,SHAKESPEAREAN TRAGEDY AND HEGELIAN TRAGEDY

    asked by NIQUE FROM DALLAS
  108. D+T; (Control systems); mechanisms

    is aircraft wings 1st class? if not then what is the answer?

    asked by Danielle
  109. alternative health

    what are the cell builders

    asked by ash
  110. Psychology

    What is the controversy surrounding full body scans and what is the dilemma this is creating for physicians? What are the dangers of full body scans?

    asked by Christian
  111. critcal thinking

    how does Critical thinking affects my writing

    asked by neenee01
  112. maths

    emma draws this diagram. She says it shows part of a regular polygon. Explain how you can tell that Emma must have made a mistake (it is a 158 degree angle)

    asked by corinna