Questions Asked on
October 21, 2007

  1. Chemistry

    What is the pressure (in atmospheres) of the gas inside the container connected to an open-end, mercury-filled manometer as shown in the picture? The atmospheric pressure is 0.95atm. l----l | (G) l | l - --- l Hg l Hg *18cm - - --- Hg Hg HgHgHgHg what

    asked by leo
  2. physics

    In a mall, a shopper rides up an escalator between floors. at the top of the escalator, the shopper turns right and walks 9.00m to store. the magnitude of the shopper's displacement from the bottom of the escalator is 16.0m. the vertical distance between

    asked by ajo
  3. Physics

    A ball of mass 0.15kg is dropped from rest at a height of 1.25m. it rebounds from the floor to reach a height of 0.960n. what impulse is given to the ball from the floor? i don't have a clue where to start. i know impulse is constant force x change in time

    asked by natali
  4. science

    A 2:35 kg block is pushed 1:57 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 67.5 degree with the horizontal. The acceleration of gravity is 9.8 m/s2. If the coefficient of kinetic friction between the

    asked by aksha
  5. ECON-HELP!!

    1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises taxes

    asked by greg
  6. Chemistry

    Fill a balloon with helium gas to a volume of 2.68 L at 23 celsius and 789mmHg. What would the volume of helium if the pressure changes to 632 mmHg but the temperature is unchanged. This is how I solved it V2 = V1 X P1/P2 2.68L X 23/789 = V2 =.078 L Is

    asked by lt
  7. science

    An outfielder throws a .150 kg baseball at a speed of 40.0 m/s and an initial angle of 30 degrees. What is the kinetic energy of the ball at the highest point of its motion. Work: 0^2=40^2+(.002)(-9.8m/s^2)(d) d=81.6m W=(.150kg)(9.8m/s^2)(cos30)(81.6m)

    asked by Anonymous
  8. sand bath (chem)

    what are disadvantages and advantages of using a sand bath to heat something in chem?

    asked by ~christina~
  9. physics

    The earth moves around the sun in a nearly circular orbit of radius 1.50*10^11m. During the three summer months (an elapsed time of 7.89*10^6s), the earth moves one-fourth of the distance around the sun. (a)what is the average speed of the earth? (b) what

    asked by ajo
  10. ECON--HELP!?!?!

    1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises taxes

    asked by GREG
  11. econ--HELP!!

    QUESTION Consider an economy described by the following equations: Y=C+I+G Y=500 G=1,000 T=1,000 C=250+0.75(Y-T) I=1,000-50r a.In this economy, compute private saving, public saving, and national saving. b. Find the equilibrium interest rate. c. Now

    asked by greg
  12. Microeconomics

    Indicate how you think each of the following would shift demand in the indicated market: a.Incomes of buyers in the market for Adirondack vacations increase. b.Buyers in the market for pizza read a study linking hamburgers consumptions to heart disease.

    asked by Tiff
  13. Calculus

    Find the average value of sqrt(cosx)on the interval [-1,1]

    asked by Anonymous
  14. CHEM

    I was just wondering if someone would be able to critique my answers for the following Chem questions? they range from pretty basic to a bit more... 2)which of the following is the definition of the value of Avogadro's constant: b) the # of Carbon atoms in

    asked by K
  15. science

    When rollerblading,why is a fall less harmful on a wooden floor than on a concrete floor that has less give?Explain in terms of impulse and momentum.

    asked by Emma
  16. physics

    A driver of a 7.50 N car passes a sign stating "Bridge Out 30 Meters Ahead." She slams on the brakes, coming to a stop in 10.0 s. How much work must be done by the brakes on the car if it is to stop just in time? Neglect the weight of the driver, and

    asked by Anonymous
  17. Science

    What processes must a stone undergo if it is to be made ready for use in jewelry?

    asked by Christine
  18. physics

    A 2.0 g bullet leaves the barrel of a gun at a speed of 300m/s. (a) Find its kinetic energy. (b) Find the average force exerted on the bullet by expandin gases as the bullete moves the length of the 50 cm long barrel. I did (a), but I am not sure if it is

    asked by Anonymous
  19. government

    Hello there. I was wondering if someone could please tell me whether or not you could call a government totalitarian and communism? We're studying Sparta (from ancient Greece) and our teacher said it was totalitarian and later she said it was

    asked by Lydia
  20. science, biology

    Hemophilia is a hereditary disease that prevents a persons blood from clotting correct;y. The gene responsible for blood clotting is located on the X chromosome of the sex chromosome pair (X and Y. This is called x-linked inheritance. The dominant gene is

    asked by maggie r
  21. COLLEGE PHYSICS

    A car with mass of 1400kg is towed with a net force of 4500N. the car starts from rest, find the speed of the car traveled after it traveled 100m. W=FnetX distance=ma x distance 4500N=(1/2)1400kg V^2 2.5m/s=V is this right? if not what am i doing wrong?

    asked by Anonymous
  22. american History

    compare Jefferson's presidency and Washington's, which seems more like today's presidency?why?

    asked by ek
  23. science

    If you throw an egg against a wall, the egg will break. But if you throw it at the same speed into a sagging sheer, it may not break. Why?

    asked by Emma
  24. Physics

    Mars' moon Phobos has a mass of 1.07x1016 kg and a mean radius of 11.1 km. Let's say our rocket blasts off from the surface of Phobos when Phobos is 9500 km from the surface of Mars. Does the rocket have to work harder to escape from the gravitational pull

    asked by Raj
  25. Diversity

    Would someone please check my answers to make sure I've chose the best possible answer? 1. An example of ________ can be found in the gradual immersion of early Irish immigrants and their descendants across decades as they become a part of and contributed

    asked by Rose
  26. Accounting

    I am struggling with the operating activities section of this as in what titles of accounts I should use in this section and do they decrease or increase the net income 2005 2004 Assets Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 53,875

    asked by Tricia
  27. Biology

    What are 3 characteristics you would find in a protein secreting cell?

    asked by Mala
  28. U.S. GOVERNMENT

    I NEED AN EXAMPLE OF HABEAS CORPUS BEING BROKEN IN HISTORY

    asked by I NEED HELP!!!!!!!!!!!!!!!!!!!!
  29. math

    The Melt in Your Mouth Chocolate Factory is a rectangular building. The distance across the front of the store is 98 yards. The distance from the front to the back is one-third of this distance. If the owners paint a sign all the way around the outside of

    asked by ty
  30. AP Biology

    the metabolic function of fermentation is to: a. oxidize NADH to NAD+ so that glycolysis can continue b. reduce NADH to NAD+ so that more ATP can be produced by the electron transport chain c. produce lactate during aerobic exercise d. oxidize pyruvate in

    asked by Sarah
  31. com 215

    Discuss how your would approach creating a negative message for a superior ( such as a manager at work or and instructor) versus creating a message for a colleague, subordinate, or fellow student

    asked by attivia
  32. physics

    The first graph you plotted is called a speed-time graph. However, information other than speed or time can be obtained from such graphs. (a) What does the area under the line of the graph represent? the distance traveled? (b) Write an equation to

    asked by Anonymous
  33. Chemistry

    If coffee powder is dissolved in hot water, which is the solute, which is the solvent? HOW DO YOU KNOW? I know coffee is solute and water is solvent but how do I know? Iunno.

    asked by Dick Rogers
  34. Reading

    How to get a 7 year old to comprehend reading, math, and writing? (and 1st grade book reports)

    asked by Susan
  35. Social Studies

    does anyone have a good website for the Neolithic Age?? {new stone age} thanks

    asked by Bailey
  36. Chemistry

    Use a diagram to help explain how LiF dissolves in water. Dont know if you guys can help me on that..

    asked by Dick Rogers
  37. Physics

    How does one Coulomb of charge compare to the charge on an electron? How do you think such a large difference arose historically?

    asked by Adam
  38. calculus

    Find the area of the region in the first quadrant enclosed by the coordinate axes and graph of x^3+y^3=1.

    asked by Anonymous
  39. Chemistry

    There's a test tube filled with a gas, and you bring a flame to the mouth of the tube. Many things could happen... The flame might get snuffed out and there might be a popping sound... so how can you find the density of that gas in relation to the air

    asked by amaliyah
  40. Science

    Can someone explain to me homeostasis? I looked it up but I couldn't figure it out.

    asked by Bailey
  41. Algebra

    Checking some homework, Perform the indicated operations (x2 – 11x + 4) – (-2x2 + 2x – 6) –(x2+ 6x – 5) I took away the parenthesis and put the like terms next to each then added and subtracted the likes terms. Answer : 2x^2 - 19x + 15

    asked by John
  42. Algebra 2

    Before I go on and give you the problenms let me explain. i am not some lazy kid trin to get people to do my homework over the internet. I am freshman that just recently skippeda garde in math and I need some help. The problems below are from my pop quiz

    asked by Allen
  43. science

    Why do 6-ounce boxing gloves hit harder than with 16-ounce gloves?

    asked by Emma
  44. Chemistry

    How many grams of hydrochloric acid are required to react completely with 4.30 grams of zinc? I got 4.80g HCl for the answer but do not know how to do part 2 which is, How many molecules of a gas will be produced? Thanks.

    asked by lucy
  45. Check out my answer for this science question plez

    The chemicals make rain acidic how does it happen? Is it this it? The chemicals from the black smoke gets mixed up in the water cycle and creates acid rain.

    asked by Vero
  46. physics HELPPP please

    I am stuck on a question that asks for the resultant force(magnitude + direction) question says : A rope is strung between a car and Joe, the car pulls on the rope with a force of 20,000 newton. joe pulls the rope with a force of 25,000N. what is the

    asked by sam
  47. French for Miche

    For some reason I missed your question the other day about "C'est délicieux, etc." and I thought you might like an explanation. The pronoun "ce" (c') meaning "it, he, she, this, that, they, these, those" is used only with the verb être. "Ce" replaces

    asked by SraJMcGin
  48. American History

    Why was Marbury v. Madison such an important case, both in the early days of the country and for its future?

    asked by ek
  49. Science

    Explain why the cost of obtaining some minerals is very high.

    asked by HELLPPP!!
  50. math

    I am taking test and I have done it twice these are the problems I am comming up with two different answers. 10. The gas tank in Giorgio's car holds 23 gal when full. The car gets 30 mi/gal. How far can he travel on 2 full tanks? I came up with 1380 miles

    asked by Christi
  51. Physics

    I am stuck on a question that asks for the resultant force(magnitude + direction) question says : A rope is strung between a car and Joe, the car pulls on the rope with a force of 20,000 newton. joe pulls the rope with a force of 25,000N. what is the

    asked by sam
  52. social studies

    What was the government like in Mesopotamia

    asked by I want HELP
  53. Biology

    So the question is: What is the evolutionary significance of the 'Euglena' that forms a perspectie of utiliazing pigments to capture light energy? I researched for hours but couldn't find information on evolution of Euglena. please help ASAP! Thank you!

    asked by I NEED HELP
  54. Finance

    Marie-Josee intends to buy her father company. He wishes to sell her his company for a $850 000 amount because he would like to bequeath his inheritance to his daughter in his lifetime. Knowing the big generosity of her father, Marie-Josee wishes to make

    asked by Eli
  55. Askk

    What is the worlds tallest man

    asked by Joshua
  56. math

    How do you work out: 5u-v+2w=25 3u+2v-3w=16 2u-v+w=9 I have tried loads of times already and can't get the right answer.

    asked by Anonymous
  57. calculus

    Find f(4) if S (0 to x) dt=xcospix.

    asked by Anonymous
  58. math

    Find intervals on which the following functions are increasing and decreasing. 1. f(x) = sin 2x : x is greater than or equal to 0 and less than or equal to pi 2. y = sin x + cos x [0,2pi]

    asked by aksha
  59. Physics

    A motorboat accelerates uniformly from a ve- locity of 6.4 m/s to the west to a velocity of 2.0 m/s to the west. If its acceleration was 3.3 m/s squared to the east, how far did it travel during the acceleration? Answer in units of m.

    asked by Brandon
  60. Human Biology

    Which human organ system is the first to become visibly differentiated during development? Which is the second? What is the significance of this order?

    asked by Jen
  61. Chemistry - Solutions

    Can the term hydration be applied to the solvent carbon tetrachloride? Explain your reasoning. If it cannot be used, what term can?

    asked by Dick Rogers
  62. chemistry

    convert 0.0840 mol to liters ??? is it 1 liter over 1 mol

    asked by lt
  63. Algebra 2

    Before I go on and give you the problenms let me explain. i am not some lazy kid trin to get people to do my homework over the internet. I am freshman that just recently skippeda garde in math and I need some help. The problems below are from my pop quiz

    asked by Allen
  64. grammar

    Is this the correct use of a semicolon? From the harbors of Africa to the forests of Vietnam, mankind has glorified the most horrid of acts; the practice of murder.

    asked by annie
  65. science

    If acid rain falls on people it burns their skin. What else does it do on people other than burn your skin?

    asked by Jenny
  66. social studies

    need help unscrambling some letters for a word scramble the letters are tepmotleso, pemtounocleid,ralnarticniewv hopefully u have better luck than i did and ty

    asked by Jennifer
  67. writing analysis paper

    I have an analysis paper due on a poem. I have a few ?'s. Is the plot the same as the setting of the poem? when doing an outline what do I put under the plot? The plot is number I, but what do I list as A. B. etc? Do I put the location, the time of day?

    asked by confused
  68. ethnics

    Do Asian Americans and Pacific Islanders belong to a single "Asian American" culture? please help

    asked by nora
  69. Biology

    So the question is: What is the evolutionary significance of the 'Euglena' that forms a perspectie of utiliazing pigments to capture light energy? I researched for hours but couldn't find information on evolution of Euglena. please help ASAP! Thank you!

    asked by Megan
  70. AP Biology

    in cellular respiration, which compound has the highest free energy (will produce the most ATP when oxidized)? acetyl CoA glucose pyruvate fructose bisphosphate glyceraldehyde-3-phospate

    asked by Sarah
  71. Punctuation within sentences-hyphen

    the book had some nice features, such as: a hard-bound cover, a ribbon for a bookmark, and the author's signature. 2. German grammar is simple: in that language, there are no exceptions to the rules. 3. Her daughter went on a diet that consisted of all

    asked by ted
  72. Physics

    using uniform acceleration, how can I find the displacement of an object?

    asked by brian
  73. math

    8x-[2x+3{-2(2x+3)-4x}-10]

    asked by igi
  74. U.S. GOVERNMENT

    I NEED AN EXAMPLE OF THE STATES HAVING TOO MUCH POWER OVER THEIR CITIZENS IN HISTORY

    asked by I NEED HELP!!!!!!!!!!!!!!!!!!!!
  75. colonial log

    i need to make a sort of traveling log from colonial times about 7 to 13 years before the Boston massacre and i'm having writer's block can anyone give me a general plan or idea please?

    asked by Rebel
  76. geometry

    ok, so i don't understand this question. : which postulate justifies the following statement? "exactly one plane contains

    asked by noel
  77. social studies

    need help unscrambling these words tepmotleso,pemtounocleid,hcnaotinw,woblinemso ty for any help with this

    asked by Jennifer
  78. biology

    when a black angus has ofspring that come out brown or just spotted brown..what is the cause of it?

    asked by yesenia
  79. science

    Which has the greater momentum when they move at the same speed- an automobile or a skateboard? Which requires the greatest stopping force?

    asked by Emma
  80. Calculus

    What is the derivative of e^cx ?

    asked by Mary
  81. science

    why is a punch more foreful with a bare fist than with a boxing glove?

    asked by Emma
  82. vocab

    What's another word for "made-up"? For example 'something is made-up of...'

    asked by katie
  83. Comparative Politics

    What are the implications of a united Europe for the global role of the United States?

    asked by Jessica
  84. social studies

    What evidece suggests that the society in mali was stable?

    asked by Anonymous
  85. U.S. GOVERNMENT

    WHAT DOES JAMES MADISON SAY ABOUT HE STATES BEING THE MOST CAPABLE OF PROTECTING THE CITIZENS RIGHTS?

    asked by I NEED HELP!!!!!!!!!!!!!!!!!!!!
  86. Science

    what does H+ stand for?

    asked by Judy
  87. math

    Find the average of these times using and recording two different sets of keystrokes you consider efficient? 11.5 s 10.5 s 12.2 s b) Which is more efficient?

    asked by aksha
  88. science

    what is the name between high and low tides

    asked by jamal
  89. math

    2m+12=3m-31 3(5j+2) = 2(3j-6)

    asked by Hail
  90. Science

    describe the theories that scientists have developed to explain the events of the jurassic period.

    asked by Anonymous
  91. social science

    describe the role of water in biosphere?

    asked by jasmine
  92. written communication

    write a memo to my manger

    asked by Marilyn Green
  93. FRENCH

    19 moins 11 font moins=minus or multiply?

    asked by BEN