Questions Asked on
April 30, 2008

  1. Math - Trig

    Hi I have a Trig question that i don't understand, can someone please explain how to solve for it using cosine law?? A Clock with a radius of 15 cm has an 11 cm minute hand and a 7 cm hour hand. How far apart, to the nearest centimetre, are the tips of the

    asked by Mark
  2. math

    Water is Pumped into an underground tank at a constant rate of 8 gallons per minute.Water leaks out of the tank at the rate of (t+1)^½ gallons per minute, for 0

    asked by POD
  3. Physics

    If two lightning bolts hit exactly the same place at exactly the same time in one frame of reference, is it possible that observers on other frames will see the bolts hitting at different times or at different places?

    asked by Tiffany
  4. Chemistry

    What is the concentration of a solution prepared by diluting 25.0 mL of HCL 0.750 mol/L to a final volume of 500.mL?

    asked by April
  5. tom

    The sound emitted by bats has a wavelength of 3.0 mm. What is the sound's frequency in air? how do i do this??

    asked by physics
  6. Social Studies

    The president of the United States is elected by the electoral college. What type of system is this? a) dicatatorship b) monarchy c) oligarchy d) pure democracy e) representative democracy

    asked by Barbie
  7. economics

    in the simple economics of a competitive market price increases under which condition: a) demand is constant. supply declines b) demand decreases. supply increases c) demand and supply rise concomitantly d) demand and supply decline concomitantly

    asked by Louis
  8. Chemistry

    Calculate the molar mass of a compound that raises the boiling point of water to 100.15oC when 40.5 g of the compound is dissovled in 500 g of water. and A mass of 41 g of an unknown nonelectrolyte is dissolved in 429 g naphthalene. The nonelectrolyte

    asked by Zachary
  9. calculus

    Water is Pumped into an underground tank at a constant rate of 8 gallons per minute.Water leaks out of the tank at the rate of (t+1)^½ gallons per minute, for 0

    asked by POD
  10. english - revision

    Create a thesis statement for your research paper: My topic is: The price of food is leading the rise of inflation in today's economy. My thesis statement: The rising price of commodities around the world caused a lack of production which is resulting in

    asked by rose- Ms. Sue
  11. Science

    Air is composed of nitrogen, oxygen, argon, carbon dioxide, and other gasses. How may air be best described? a) a compound b) a mixture c) a solution d) an alloy e) an amalgam

    asked by Louis
  12. Social Studies

    In ancient Athens(Greece) tribes and generals took turns at power. this is an example of what type of political system? a) dicatatorship b) monarchy c) oligarchy d) pure democracy e) representative democracy

    asked by Barbie
  13. American History

    The city where Orval Faubaus sought to prevent black students from attending Central High School was a. Montgomery b. Greensborr c. Little Rock d. Tuskegee --------------------------my answer: C? Because Orval Faubus is a Arkansas governor who defied

    asked by CM
  14. physics

    On a day when the speed of sound is 354 m/s, a 2000 Hz sound wave impinged on two slits 30 cm apart. At what angle is the first max located? I just am not sure what equation to use. any help is appreciated..im lost

    asked by Paul
  15. American History

    Critics of American policy in Vietnam claimed all of the following except that a. the war was a civil conflict in which the United States had no part. b. the president had subverted the role of Congress in declaring war. c. the North Vietnamese Communists

    asked by CM
  16. please revise

    Historically, African-American women have enjoyed the skeptical benefits of the few of beliefs of womanhood (Davis 1983). African-American women are in the general sense; the only women in America, who is almost unknown, thus, the only insight of African

    asked by Christi
  17. Algebra

    The time a group of high school students arrive home from school each day was found to be normally distributed. The mean time was 3:15pm and the times had a standard deviation of 15 minutes. What is the probability that a student chosen at random arrives

    asked by Tracy
  18. Physics

    A 86.0 kg person steps into a car of mass 2500.0 kg, causing it to sink 3.0 cm. Assuming no damping, with what frequency will the car and passenger vibrate on the springs? Here is what I do. I take the mass and set it equal to k*x to get k, then divide by

    asked by Lindsay
  19. Social studies

    The most useful indicator of degree of democracy reached by a particular society is whether it has a a) civilian government b) formal method whereby people can effect changes in government policy c) system of government checks and balances d) system of

    asked by Annie
  20. Health

    one example of a chemical in food that is not a nutrient is? a) fiber b) selenium c) starch d) folate

    asked by Annie
  21. American History

    The three main issues of the 1968 presidential campaign between Richard Nixon and Hubert Humphrey included all of the following EXCEPT a. violence and disorder b. the energy shortage c. racial unrest d. the war in vietnam ------------------------my answer:

    asked by CM
  22. English- please revise

    Create a thesis statement for your research paper: My topic is: The price of food is leading the uprise of inflation in today's economy. My thesis statement: The rising price of commodities around the world caused a lack of production which is resulting in

    asked by rose- Ms. Sue
  23. poetry

    what is a good metaphor for what happiness is? i am writing a quality poem on happiness and i can't think of anymore metaphors. please help? thanks!

    asked by Anonymous
  24. History

    There is one problem on my homework that I cannot really get. "There is a well off businessperson in England in 1553. The Anglican Church has been the dominant religion since it's beginning during the reign of Henry VIII. Mary I has become the new monarch

    asked by Brittany
  25. MATH

    PEMDSR QUESTION. (9,278x15)/20x50-325+300>100+450x2+2,000/40,000 IS IT TRUE OF FALSE

    asked by DONOVAN
  26. Physics

    My question had 2 parts: a) A 2.0 kg object oscillates with simple harmonic motion on a spring of force constant 580.0 N/m. The maximum speed is 1.0 m/s. What is the total energy of the object and the spring? Answer: 1.0 J b) What is the maximum amplitude

    asked by Lindsay
  27. Science

    The Smiths have four children, all girls but the fifth child is a boy. Why did this change occur? a) the law of averages finally catching up b) the conception classes taken by the parents c) the father's contribution of a Y chromosome d) the mother's

    asked by Barbie
  28. language arts

    What is this word unscrambled; cioponam?

    asked by Logan
  29. Kindergarten trip sheet

    My kindergarten class is taking a trip to the New York Transit Museum. They will be focusing on trains of the past and trains of the future. I need to see if they learned anything from the trip experience. As a result, I plan on creating a trip sheet.

    asked by Monica
  30. marketing

    what are the disadvantages facing Acxiom

    asked by gee gee
  31. Physics

    If you were in a smooth-riding train with no windows, could you sense the difference between uniform motion and rest? Between accelerated motion and rest? How could you make such a distinction with a bowl filled with water?

    asked by Tiffany
  32. ICT

    flowchart .i need help with my ict homework i need to explain what the symbols are and give a reason on how to use them. one is a rectangle shape, one is a rectangle with rounded ends and one is a diamond. thanks for help

    asked by LOUISE
  33. Science/Anatomy

    Which one of the following compounds is an organic molecule? a) Table Salt(NaCi) b) Ribonucleic acid c) Water d) Hydrogen chloride

    asked by Michaelle
  34. computers

    I have 2 children 9 and 10 yr old I am trying to find ways to teach them about different aspects of computers.Any book worksheets or website ideas

    asked by sunita
  35. chemistry

    What are some example of mild and strong oxidizer that are used in organic synthesis? Thanks

    asked by John
  36. physics

    A 4400 kg car can acceletare from 0-25 m/s in 4 seconds. What force must the engine created to accomplish this acceleration? 176 N 1100 N 17600 N 27500 N An elevator is moving up with an acceleration of 3.36 m/s squared. What would be the apparent weight

    asked by leah
  37. Science

    Which of the following compounds in the liquid phase can be considered an electrolyte? a) CO 2 (carbon dioxide) b) CuO (oxidized copper) c) H2O ( distilled water) d) H2O2 ( Hydrogen peroxide) e) NaCI (sodium chloride)

    asked by Annie
  38. Science

    An airplane has to fly eastward to a destination 856 km away. If wind is blowing at 18.0 m/s northward and the air speed of the plane is 161 m/s. In what direction should the plane head to reach its destination. So I know the direction is south east but

    asked by Jane
  39. Science

    An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the folloeing objects will accelerate EXCEPT a)a ball striking a wall, in which the force of the ball

    asked by Annie
  40. Social Studies

    The most useful indicator of degree of democracy reached by a particular society is whether it has a a) civilian government b) formal method whereby people can effect changes in government policy c) system of government checks and balances d) system of

    asked by Annie
  41. art

    WAS IT FAIR THAT PATRONS SPNSORED ARTIST? WHY?

    asked by MARY
  42. Calculus-help please

    f(x)=(9x^2–8)^6(4x^2–5)^11 What's f'(x)= i found (9x^2-8)^6 *11(4x^2-3)^10*8x+((4x^2-3)^11)6(9x^2-8)^5*(18x) but my electronic homework says it wrong what did i do wrong?

    asked by John
  43. Science

    An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the folloeing objects will accelerate EXCEPT a)a ball striking a wall, in which the force of the ball

    asked by Barbie
  44. Physics

    When you drive down the highway, you are moving through space. What else are you moving through?

    asked by Tiffany
  45. Physics

    When a light beam approaches you, its frequency is greater and its wavelength less. Does this contradict the postulate that the speed of light cannot change? Defend your answer.

    asked by Tiffany
  46. science

    what happens when you mix iron and sulpher?

    asked by kim
  47. Critical Thinking

    Answer the following questions in a 100- to 200-word response. Cover each bullet point in your answer. o In the future, how will thinking critically influence the ways that you: · Read? · Write? · Process information? o Why and how could you apply

    asked by a
  48. Social Sutdies/History

    What American is referred to as the Champion of the Working Man?

    asked by Melissa
  49. business law

    With respect to a qualified indorser, which liabilities are eliminated as a result of the qualified indorsement? a/primary signature and secondary signature liability only. b/ secondary signature liability only. c/primary signature liability only d/

    asked by Nady
  50. Medical Terminology

    Who should use abbreviations and why? When are they acceptable?

    asked by Jin Kobeaux
  51. ALgebra 2

    Okay Im super confused about how to do this Give three points that lie on the line 3x + 2y = 6 can some one please explain it to me? thank you

    asked by Kellie
  52. algebra

    The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7

    asked by danette
  53. Physics

    4th order dark fringe and 2nd order bright fringe spaced 2.5 cm aparte appear on the screen placed 1 m behind the double slit. What is the spacing of the slits if the wavelegth ofincident light is 500nm? First I converted the numbers: x= .025m wavelength=

    asked by Jason
  54. Physics

    A particle accelerator called Large Hadron Collider can accelerate protons to 14 TeV (tetraelectonvolts) (1TeV = 10^12eV) of energy. What is the relativistic mass of a proton that has total energy of 14 TeV? (express your answer in MeV/c^2) Would I use E=

    asked by Abby
  55. analyzing smybolism

    How would each of these birds connect with the novel "The Red Pony" by Steinbeck??? 1)blackbird 2)buzzard [i'm thinking that ti=his one could be becasue it typically symbolizes death, which it does for the pony, but that for Jody it represents hatred.

    asked by lilly
  56. chemistry

    Given one of the starting materials and end product for the following reaction, show all reactants, reaction conditions in brackets (where known) and products. ethanol from calcium carbide

    asked by Priya
  57. Algebra

    (5x^3+2xy6^4+6xy)

    asked by sam
  58. Math (geometry)

    Line l is tangent to circle O at point P(3,4) where the center is located at (0,0). a. Find the radius of the circle. (I got 4) b. Give an equation of the circle. (I got x^2+y^2=16) c. Find the slope of line l. d. Give an equation of line l.

    asked by Emily
  59. Science

    Table salt - sodium chloride, one of the most common substances occurring in nature- is best classified as which of the following? a) a compound b) a mixture c) a solution d) an alloy e) an amalgam

    asked by Calixto
  60. Science

    Table salt - sodium chloride, one of the most common substances occurring in nature- is best classified as which of the following? a) a compound b) a mixture c) a solution d) an alloy e) an amalgam

    asked by Annie
  61. Health

    Carbohydrates, protains, and ____________ are the macronutrients. a) Lipids b) vitamins c) antioxidants d) minerals

    asked by Louis
  62. Spanish I

    I have to write something as if I were giving advice to my little sister using the words llevar, salir, ponerse, hacer, and decir to join with the words un regalo, comida, temprano, ropa bonita, and gracias. Can you tell me if I wrote it correctly? Because

    asked by Emily
  63. Statistics

    In reagards to correlation and regression how can that be applied to accounting. I am trying to find some websites where i could apply one of the above to accounting.

    asked by Caryn
  64. Algebra 2 Honors- Ellipses

    for my homework problem i have the equation: (x^2/16) + (y^2/4) = 1 I need to find out the center, the vertices, co- vertices and the Foci. I have trouble knowing how to find them, so if you can please explain them. Thank you.

    asked by Stephanie
  65. Algebra 2 Honors- Ellipses REAL ONE

    for my homework problem i have the equation: (x^2/16) + (y^2/1) = 1 I need to find out the center, the vertices, co- vertices and the Foci. I have trouble knowing how to find them, so if you can please explain them. Thank you.

    asked by Stephanie
  66. economics

    in general the role of board of directors is to: a) direct the day-to-day activities of the firm b) represent investor interests in management of the firm c) insure that the firm operates legally d)provide staff assistance to the CEO in strategic matters

    asked by Louis
  67. Grammar

    Can someone explain to me what Vague pronoun. Can you give me an example? I'm stuck!!

    asked by shorty
  68. American History

    True or False The population of the United States dropped sharply after World War II. -----------------my answer: True Because world war II resulted in more deaths and destroyed more propertey than any other was in history. is it right?

    asked by CM
  69. Psychology

    How has the diagnosis and treatment of schizophrenia changed over the years? What are some of the most important moments in this history?

    asked by Christian
  70. American History

    1. The Eisenhower presidency, despite two recessions, was for the most part a period of continuing economic prosperity in the United States. ----------------------my answer: true Because during president Eisenhow's presidency, the economy grew rapidly and

    asked by CM
  71. english - new

    How does the author of Aids in Africa: Dying by the numbers organize information to build his argument? Does he includes any counteragument? Why or why not? What kinds of statistics, graphs, or illustrations does the author include? In what ways do these

    asked by rose- Ms. Sue
  72. American History

    Hundreds of antiwar protestors were injured or jailed as a result of demonstrations outside the Republican convention in Miami Beach in 1968. ------------------my answer: False? my took talks about campus students participating the protest and then the

    asked by CM
  73. American History

    John Kennedy was fortunate to inherit a vibrant economy when he took office in 1960. -----------------------my answer False? the economy wasn't good before he stepped in the for presidency. During his presidency, he boosted the economy mostly by increasing

    asked by CM
  74. health

    In what ways are health care or human service organizations unproductive or inefficient?

    asked by danny
  75. science

    Most of Earth's rain and snow comes from where?

    asked by Tiffany
  76. French

    How do you say great-great-great granfparents in french? is it arriere arriere arriere and whatever granfparents was in french?

    asked by I like chickens
  77. Physics

    Is it possible for a human being who has a life expectancy of 70 years to make a round-trip journey to a part of the universe thousands of light-years distant?

    asked by Tiffany
  78. biochem lab

    any help with any of these questions is appreciated. Why was lysozyme pipetted with the Drummond micropipetter? Why can we crystallize lysozyme at room temperature when most proteins require 4 degrees celcius? Why can lysozyme experiments be set up without

    asked by stew
  79. Algebra 2

    5/2(x-1), 1/2x, 3/2(x-1)^2=?

    asked by Jake
  80. biology

    how do antidotes for cyanide poisoning work at a cellular level

    asked by chris
  81. physical science

    what helps the muscle structure,hermones, and antibodies and also carries molecules through the membranes?

    asked by eric
  82. Algebra

    Find a counterexample to the statement 4^n + 1 is divisible by 5...how do i show my work for this problem? The example in my book is too confusing it doesnt really go into detail but just shows a table.

    asked by Tracy
  83. math

    find the x-intercepts for P(x)= x^4-10x^2+9 and determine the behavior of the graph near the intercepts

    asked by Aasha
  84. calculus

    f(x)=(9x^2–8)^6(4x^2–5)^11 Find f'(x) I got (9x^2-8)^6 *11(4x^2-3)^10*8x+((4x^2-3)^11)6(9x^2-8)^5(18x) but im doing something wrong can someone check my work please

    asked by John
  85. medical filing

    I was wondering if someone could please explian to me the three types of numeric filing/numbering system or if there is a web-site that can help me I am not understanding this thanks very much for your help

    asked by Lacie
  86. algebra problem

    I need to find the equation of a parabola. I am not sure if this is the correct way or if I have the correct answer. Vertex at origin, focus is at (0,3) Equation of parabola vertex (0,0) focus (0,3) focus (h,k+p) (0,0+3) y=0-3 directrix y=-3 a=(1/4)(p)

    asked by Tim
  87. please revise

    It is normally accepted among nations that “territorial jurisdiction” is based on a crimes committed within the territory of a sovereign state. However, sometimes states also exercise jurisdiction based on a crimes that was committed abroad by one of

    asked by Christi
  88. rational equation

    (-2/x-1)=(x-8/x+6) please help i'm having a hard time doing this by steps

    asked by connie
  89. math

    I need help solving this non-linear inequality:6x^2>6+5x

    asked by Brittany
  90. grammar

    !@#$%^&ens, as well as Trollope and Thackeray, were writing novels depicting English life and customs when Victoria was queen. What is the mistake in this sentence.

    asked by John
  91. Algebra

    (5x^3+2xy6^4+6xy)

    asked by sam
  92. Algebra

    (5x^3+2xy6^4+6xy)

    asked by sam
  93. Algebra

    (5x^3+2xy6^4+6xy)

    asked by sam
  94. math

    how is a bridge nuilt, using mathematics??

    asked by grace
  95. science

    How may orientalism and prejudice contribute to hate crimes to the muslims and Arabs

    asked by Lisa
  96. Math (geometry)

    Give an equation of the y-axis. I got y=b, because there is no slope, and y will be equal to the y-intercept. Is this correct?

    asked by Emily
  97. Social Studies

    How many states are in North America?

    asked by Will
  98. 2nd Grade Science

    Some objects and ____________ things move quickly. What is the answer to fill-in the blank.

    asked by Mariana
  99. science

    why does a vast quantity of plankton exist?

    asked by lulu
  100. algebra2

    what greek letter is used to denote a series?

    asked by eugene
  101. Health

    Essential nutrient? a) are made by the body b) only can be supplied adequately with dietary supplements c) must be obtained through diet d) consist of over 75 different types of nutrients

    asked by Annie
  102. economics

    in general the role of board of directors is to: a) direct the day-to-day activities of the firm b) represent investor interests in management of the firm c) insure that the firm operates legally d)provide staff assistance to the CEO in strategic matters

    asked by Louis
  103. Algebra

    Can someone tell me if I am right? I need to find the equation of a parabola. I am not sure if this is the correct way or if I have the correct answer. Vertex at origin, focus is at (0,3) Equation of parabola vertex (0,0) focus (0,3) focus (h,k+p) (0,0+3)

    asked by Tim
  104. Health

    Essential nutrient? a) are made by the body b) only can be supplied adequately with dietary supplements c) must be obtained through diet d) consist of over 75 different types of nutrients

    asked by Annie
  105. Science

    An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the folloeing objects will accelerate EXCEPT a)a ball striking a wall, in which the force of the ball

    asked by Barbie
  106. mechnical engineering

    what is rankine cycle?

    asked by abhishek
  107. science

    explain how the physiological process of movement differs among bacteria, grasshoppers, fish, bears.

    asked by bobby