Questions Asked on
March 10, 2012

  1. AP Chem

    An apparatus consists of a 4 L flask containing nitrogen gas at 32 C and 885 kPa, joined by a valve to a 8 L flask containing argon gas at 32 C and 47.5 kPa. The valve is opened and the gases mix. What is the partial pressure of nitrogen after mixing?

    asked by Sarah
  2. Chemistry

    Write the balanced equation for the double replacement reaction of: Barium chloride and Sulfuric acid

    asked by Kristy
  3. Chemistry

    If Kc = 0.480 at 40.°C and Kc = 0.630 at 90.°C, what is ΔH° for the reaction? XY

    asked by Andrew
  4. math

    solve the system 7x^2 - 5y^2 + 20y = 3 21x^2 + 5y^2 =209

    asked by Martin
  5. Ochem

    Phenacetin has the structure shown below. Write an equation for its preparation starting from 4-ethoxyaniline.

    asked by chi
  6. Ochem

    Give two reasons why the crude product in most reactions is not pure.

    asked by chi
  7. Ochem

    In the reaction between p-aminophenol and acetic anhydride to form acetaminophen, what was the purpose of adding water to the reaction mixture? There are a couple of possible answers, and this requires a detailed explanation for credit. thanks!

    asked by chi
  8. Ochem

    If 1.43 g of 4-ehoxyaniline and an excess of the acylating agent were used to prepare phencetin, what is the theoretical yield of product?

    asked by chi
  9. math

    A town has a population of 32,000 in the year 2002; 35,200 in the year 2003; 38,720 in the year 2004; and 42,592 in the year 2005. If this pattern continues, what will the population be in the year 2016?

    asked by Brittany
  10. Math

    Which represents the type of sequence: 12, 22, 30, 36, 41, …? neither arithmetic nor geometric both arithmetic and geometric arithmetic geometric

    asked by Brett
  11. Circuits

    I want to know why is it that a voltage in a capacitor cant change instantaneously and why the current in an inductor cant change instantaneously either. Also, a capacitor stores energy, like a battery, right? Why is it that it can't be used to power, say,

    asked by Tina
  12. math

    Find the area of some figure which have radius of 42cm and degree60

    asked by Fay
  13. math please

    Which Represent the first two terms of the sequence a1=2 and an=-2(an-1)^2 2, -8 -8,-128 16,1024 -2,16

    asked by rob
  14. math

    Which is the eighth term in the sequence an=-1/125(5^n-1)

    asked by Beth
  15. College Physics

    A proton moves with a velocity of vector v = (6ihat - 1jhat + khat) m/s in a region in which the magnetic field is vector B = (ihat + 2jhat - 3khat) T. What is the magnitude of the magnetic force this charge experiences? answer in Newtons. I tried F=qvb

    asked by Anand
  16. math quick question

    I got a problem that states which graph represents the sequence of 1,2.5,4,5.5,7.. Should the graph start at 1,1 or 0,1?

    asked by rob
  17. Literacy

    10. Use one of the sources available in the Almanacs and Yearbooks section to identify the approximate time of sunrise in Anchorage, Alaska, on December 25, 2015. A. 10:15 A.M. B. 9:45 A.M. C. 11:30 A.M. D. 8:10 A.M. ANSWER IS A

    asked by Mrs. Jane
  18. Literacy

    20. Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L166 1995, E88 G62 L45 B. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 C. E88 G2512 S57 1998, E88

    asked by Mrs. Jane
  19. Literacy

    18. What are the subject headings for the 2002 edition of Invisible Man? A. American literature—History and criticism B. African Americans in literature—Outlines, syllabi, etc. C. Ellison, Ralph. Invisible man D. African American men—Fiction ANSWER

    asked by Mrs. Jane
  20. Literacy

    13. Which of the following publications are both listed under the "Magazines" results? A. Science News and Earth Island B. The Economist and American Scientist C. Odyssey and Natural History D. Astronomy and Science ANSWER IS A

    asked by Mrs. Jane
  21. Literacy

    11. In the article, "How Lethal Was the K-T Impact?" by Richard A. Kerr and Virginia Morell, what is listed as part of the related subject matter? A. Palentology B. Science C. Mexico D. Asteroids ANSWER IS C

    asked by Mrs. Jane
  22. algebra

    Which is the eighth term in the sequence an=-1/125(5^n-1)

    asked by Beth
  23. Literacy

    2. Utilizing the publication search function on EDSeek's Home page, which of the following companies publishes Pediatric Nursing? A. Royal College of Nursing Publishing Company B. Elsevier Science Publishers C. Jannetti Publications, Inc. D. Advanstar

    asked by Mrs. Jane
  24. Literacy

    7. Which search engine would be best to use when you want to know if your local library carries a particular journal? A. Worldcat B. Webarchive C. All the Web D. Google Scholar ANSWER IS A

    asked by Mrs. Jane
  25. chemistry

    Fuel oil and bitumen is 38% in demand Petrol and Naptha is 27% in demand Diesel is 23% in demand. A question asks: Why are these fractions in demand? I am not sure how to answer this questions and please advise me to how to answer this question. Thanks in

    asked by Ruth
  26. Business

    Please explain what is global warming?. And How Do Business Enterprises contribute towards economic growth??? And Please Name Me The Socio-economic issues

    asked by Khabo
  27. biology:plz help

    state the name for the action of two oppposing miscles, such as the biceps and the triceps.

    asked by pooja
  28. Human geography

    Identify the principles of human geography

    asked by Merlin
  29. Chem

    Why do the rate of reaction for a reversible reaction slows down at equilibrium stage.

    asked by Rose
  30. social studies

    I need help figuring out 2 things that help creat a nation that are good for the nation capish

    asked by Benji
  31. biology

    can toads are considered a pest in australia are there anyways that they can adapt to their surroundings without the food chain being damaged

    asked by Benji
  32. science

    find derivative of f(x)=1/sqx^2+1 by using the definition of derivatives

    asked by ibk
  33. science

    : A medical microbiological lab report indicates that a sample contained a biofilm, and that one species in the biofilm was identified as Neisseria gonorrhoeae. Is this strain of Neisseria likely to be pathogenic? Why and why not?

    asked by MOCROBIOLOGY
  34. science

    An electron micrograph of a newly discovered cell shows long projections with a basal body in the cell wall. What kind of projections are these? Is the cell prokaryotic or eukaryotic? How might this cell behave in its environment because of the presence of

    asked by ’MICROBIOLOGY
  35. SINCE

    Describe how bacterial fermentation causes milk to sour

    asked by ’MICROBIOLOGY
  36. MICRO

    Some bacterial toxins cause cells lining the digestive tract to secrete ions, making the contents of the tract hypertonic. What effect does this have on patient’s water balance?

    asked by ’MICROBIOLOGY
  37. SCIENCE

    How are photophosphorylation and oxidative phosphorylation similar? How are they different?

    asked by ’MICROBIOLOGY
  38. science

    3 Some bacterial toxins cause cells lining the digestive tract to secrete ions, making the contents of the tract hypertonic. What effect does this have on patient’s water balance?

    asked by ’MICROBIOLOGY
  39. SCIENCE

    Describe how bacterial fermentation causes milk to sour.

    asked by ’MICROBIOLOGY
  40. SCIENCE

    How are photophosphorylation and oxidative phosphorylation similar? How are they different?

    asked by ’MICROBIOLOGY
  41. science

    How are photophosphorylation and oxidative phosphorylation similar? How are they different?

    asked by ’MICROBIOLOGY
  42. science

    : Describe how bacterial fermentation causes milk to sour.

    asked by ’MICROBIOLOGY
  43. biology:plz someone help

    The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be diseased. (a) Name these arteries and explain how they may become diseased. (b) suggest why a patient is put on a heart lung machine

    asked by pooja
  44. Physiology (reproduction)

    if only one sperm penetrates into the zona pellucida of the ovum n other sperm which try to bind to the ovum are prevented from binding by the cortical granules secreted by exocytosis than what happens in Sextuplet? please give a detailed explanation.

    asked by kamran Ahmed
  45. calculus

    A tank consists of a right circular cylinder at height (h)surmounted by a hemisphere at a radius (r) with an outlet atthe top. The tank is full of water at density ρkg/m3. Find the work required to empty thetank.

    asked by Peter
  46. English

    I need your help to check these sentences, Writeacher. Thank you very much in advance. 1) Winston's face is ruddy for the low quality soap and blunt razor blades he uses. 2) His face is ruddy for the use of low ..(Which one is best?) 3) Everything seems

    asked by Henry
  47. 3 D - geometry (direction of cosines)

    Find the angle between the lines between the lines whose direction cosines satisfy the equations l + m + n = 0 and 2mn + 3nl - 5lm =0.

    asked by uma
  48. chem

    If one started will 7.72g of copper (11) chloride, how many gram of copper could be produced ?

    asked by linda
  49. Science

    Can someone help me come up with a discussion question about pulmonary embolism? I have to ask my class at least two questions about it and have a five minute discussion. Does anyone have any ideas?

    asked by Rebecca
  50. chemistry

    what is the pH and pOH of a soution with a volume of 5.4 that contains 15 grams of HCl and 25 grams of nitric acid

    asked by Anonymous
  51. Physics

    An asteriod is found a distance from the sun equal to 32 units times the earth's distance. What will be the length of time in years required for this asteriod to make one revolution around the sun?

    asked by Sam
  52. English

    I still have some more corrections I'd like you to check. Thank you. Please, I really need you help! 1) Because of Eton's restrictive moral code he became more and more strong-minded. He chose Orwell from the name of the river he liked. 2) He changes the

    asked by Henry
  53. math

    a pizza has a circumference of 47.1in. what is the radius

    asked by daryl
  54. math

    explain how to find ans. a clock has a circumference of 166cm. what is the diameter

    asked by daryl
  55. Marketing

    Identify a firm in any industry operating and discuss the segmentation strategies for it's product

    asked by Ayensu
  56. Math

    Find the points of inflection of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = 1/3x^4 + 4x^3 for some reason I am not getting the right answer; I got the graph on my calculator but it seems weird.

    asked by Angelina
  57. algebra

    There is a 100 point test with 38 questions. The test has 2 point questions, and 5 point questions. How many 5 point questions and 2 point questions are there?

    asked by Paige
  58. Physics

    A long cylindrical insulator has a uniform charge density of 1.0 #C/m3 and a radius of 9.0 cm. a) What is the electric field inside the insulator at a distance of 4 cm? b) What is the electric field at 17 cm? c) How much work must you do to bring a q =

    asked by Fatima
  59. math

    how do you find the area of 5 5/8 and 2 7/8?

    asked by michael
  60. college Math

    perform the indicated operation, give answer in scientific notation. (5x10^2)x(5.6x10^4)

    asked by Anonymous
  61. statistics

    1. On a measure of anxiety, the mean is 79 and the standard deviation is 12. What are the z-scores for each of the following raw scores?

    asked by bertha
  62. math

    what are the equivalent fractions for 7/20

    asked by shion
  63. statistics

    M= 500 SD= 100 What X value, separates the top 15% of the distribution from the rest?

    asked by Amy
  64. Math

    y= sqrt(81-x^2) What length and width should the rectangle have so that its area is a maximum? (smaller value) (larger value)

    asked by Angelina
  65. matrh

    what are the equivalent fractions for 9/8

    asked by shion
  66. statistics

    M= 19.8 SD= 7.2 What is the probability of randomly selecting a student with a treadmill time greater than 25 minutes? In symbols, P(X > 25) = ?

    asked by Amy
  67. accounts

    January 1,07 S.Henry sales ledger appear D Fung $200 and C Manley $120.On february 1 Henry accept $150 from D.Fung and march 10, C.Manley was declared bankrupt.a payment of 30cent in $ was receive in full settlement. Show how these would appear in Henrys

    asked by charlette powell
  68. Calculus

    The total charge in an electrical circuit as a function of time is given by q=t/(t^2+1) coulombs. Find the maximum charge of q.

    asked by Candy
  69. Calculus

    Water reaches its maximum density above its freezing point. The volume V (in cubic diameters) of 1 kg of water at temperature T between 0 degrees C and 30 degrees C can be approximated by the formula V=999.87 - 0.06426T + 0.0085043T^2 - 0.0000679T^3. Find

    asked by Candy
  70. Calculus

    The strength of a beam with rectangular corss-section is directly proportional to the product of the width and the square of the depth (thickness from the top to bottom of the beam). Find the shape of the strongest beam that can be cut from a cylindrical

    asked by Candy
  71. Calculus

    A closed box is to be a rectangular solid with a square base and volume of 12 ft^3. Find the most economical dimensions if the top of the box is twice as expensive as the sides and bottom.

    asked by Candy
  72. Calculus

    A cicular metal plate is being heated and expands so that its radius increases at the rate of 0.25 mm/min. How fast is the area increasing when the radius is 10 cm?

    asked by Candy
  73. Calculus

    Two ships are leaving port at the same time. The first ship is sailing due east at 20 km/hr and the other due north at 15 km/hr. How fast are the ships moving away from each other 2.0 hr later?

    asked by Candy
  74. Chemistry: Identifying Substances

    Hi! I would like to know the definitions for... ELEMENT: something on the periodic table? COMPOUND: molecule with at least 2 different elements? SYMBOL: i'm confused about this FORMULA: i'm confused about this ATOM: smallest units of elements? MOLECULE: a

    asked by Cicilia
  75. Calculus

    A boat being pulled toward a wharf by a rope attached to the boats deck from a point 8.0 m above the deck. If the rope is being pulled in at a rate of 2.0 m/min, how fast is the boat approaching the wharf when it is 12.0 m away?

    asked by Candy
  76. Calculus

    Wheat is poured on the ground at a rate of 12 ft^3/s. The pile forms a cone whose altitude is always three fourths of the radius. Find the rate at which the altitude is increasing when the altitude is 6.0 ft.

    asked by Candy
  77. statistics

    Just wondering if someone is able to give instructions as to how to go about this questions? As part of a large research project, a social psychologist develops a measure of global environmental attitudes (i.e., general attitudes towards the environment).

    asked by MM
  78. Math

    How many positions would be needed to represent 57^10,001 in ordinary decimal notation. Thanks!

    asked by Sandy
  79. Physics

    The pulley system shown in the figure is used to lift a 52-{\rm kg} crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.5 m/s^2.

    asked by JO
  80. Chem. help please

    A zinc-copper battery is constructed as follows at 25 degree C: Zn | Zn2+(0.15 M) || Cu2+(1.70 M) | Cu The mass of each electrode is 250. g. I found the cell potential to be 1.13V and the cell potential after 5.00 A of current has flowed for 8.00 h is

    asked by Puja
  81. Math Geometry

    given triangle abc, measure of angle b= 120 degrees, ab= 6 units, bc= 10 units, find the area of abc

    asked by Anonymous
  82. math

    y = 40 + (x - 600)*0.35 y = 50 + (x - 600)*0.10 what are the steps to get the answer

    asked by des
  83. math

    An electric post was broken by a strong typhoon.It formed a right triangle with the ground.If a broken part makes an angle of 25 degrees with the other part,and the topmost part of the post which is post which is on the ground is 40 ft from the base,how

    asked by NIRVANA RIZA A. GARON
  84. physics

    An ion enters a mass spectrometer which has a .18 T field perpendicular to? an electric field of 1.6 kV/m and selects a velocity. the same magnetic field is then used to deflect the singly charged ion into a circular path of radius 12.5 cm. a. what

    asked by fatih
  85. physics

    a magnetic field goes from the top to the bottom of this page. what direction will a proton moving diagonally from the upper left to the lower right deflect? Assuming paper lies flat. a.downward b.upward c.left d.right

    asked by fatih
  86. Algebra I

    The width of a rectangle is fixed at 7 cm. Determine (in terms of an inequality)those lengths for which the area will be less than 161 cm2.

    asked by Jeannine
  87. physics

    two particle with equal mass, one carrying a charge q and the other -2q each enter at right angles to a uniform magnetic field with the same velocity. which is deflected into a circular path with the larger radius?

    asked by fatih
  88. math

    a square playground has area of 174 m2 .what is the approximate lenght of each side of the playground?

    asked by brenda
  89. calculus

    2. Let R be the region in the first quadrant bounded by the graphs of (x^2/9)+(y^2/81)=1 and 3x+y=9 . a. Set up but do not evaluate an integral representing the area of R. Express the integrand as a function of a single variable. b. Set up but do not

    asked by Taeyeon
  90. calculus

    A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 20 feet. (a) How many seconds after launch does the projectile

    asked by Brian
  91. Calculus

    Suppose that sin q = − 12/13 and that q is a Quadrant IV angle. (a) Find the exact value of cos q. Show work. (b) Find the exact value of sin 2q. Show work.

    asked by Brian
  92. physics

    a positive charge is moving to the right and experiences a vertical upward magnetic force. In which direction is the magnetic field? to the right to the left out of the page into the page upward

    asked by fatih
  93. Calculus

    Let f (x) = 5x^2 – 9 and g(x) = x – 3. (a) Find the composite function ( f o g)(x) and simplify. Show work. (b) Find ( f o g)(2) . Show work.

    asked by Brian
  94. Calculus

    Find the equation for a line which passes through the points (–1, 1) and (3, –7). Write the equation in slope-intercept form. Show work.

    asked by Brian
  95. physics

    A 0.5 kg air-hockey puck is initially at rest. What will its kinetic energy be after a net force of 0.3 N acts on it for a distance of 0.5 m

    asked by Michelle
  96. Calculus

    For the parabola given by (y – 3)^2 = 8(x + 5), find the following: (a) direction parabola opens (to the left, right, up, or down) Answer: ___________ (b) vertex Answer: ___________ (c) focus Answer: ___________

    asked by Brian
  97. Calculus

    Points (–1, 6) and (–3, 2) are endpoints of the diameter of a circle. (a) What is the exact length of the diameter? (Simplify as much as possible) Answer: ________ (b) What is the center of the circle? Answer: ____________ (c) What is the equation of

    asked by Brian
  98. College Physics

    (a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 9.62 m/s when going down a slope for 4.00 s? (b) How far does the skier travel in this time?

    asked by Ryan
  99. Calculus

    Bob, a resident of Metropolis, pays Metropolis an annual tax of $50 plus 1.9% of his annual income. If Bob paid $2,387 in tax, what was Bob's annual income?

    asked by Brian
  100. Calculus

    A can of soda at 80° F. is placed in a refrigerator that maintains a constant temperature of 36° F. The temperature T of the soda t minutes after it is placed in the refrigerator is given by T(t) = 36 + 44 e^–0.058 t Find the temperature of the soda 10

    asked by Brian
  101. physics

    How much work does a 69 kg person do against gravity in walking up a trail that gains 790 m in elevation

    asked by Michelle
  102. Calculus

    Given the function" f(x)=1/4x− 3, find a formula for the inverse function.

    asked by Brian
  103. Calculus

    (a) State the reference angle associated with 265°. (b) Convert 265° to radians. Leave the answer in terms of pie .

    asked by Brian
  104. Calculus

    Given y = 5 sin(6x – pie), state the (a) period (b) phase shift

    asked by Brian
  105. Managerial accounting

    I have homework in managerial accounting, textbook by Atkinson 6edition. Problems, 10-59, 10-68, 11-68 and case 11-73. Pages; 446, 450, and 504. Thank you.

    asked by John Williams
  106. Math

    In 1995 the united states recovered 21% of its municiple solid waste through recycling up from 17% in 1990. Let y represent the percentage recycled and let x equal the number of years since 1990. Find the linear function that fits this data.

    asked by Ann
  107. Math

    How can you find a copy of the King of the Ring Worksheet. I lost it and I need a new copy

    asked by Adam
  108. math

    A 35-foot long ladder is leaning against the wall of a building.How far from the ground is the top of the ladder and how far from the base of the building is its foot if it makes a 20 degrees angle with the wall?

    asked by NIRVANA RIZA A. GARON
  109. statistics

    1. A test has a mean of 50, standard deviation of 10. A. What scores separate the middle 25% from the rest b. What proportion would be expected to score between 45 and 55 c. What proportion would be expected to score 68 and above

    asked by Susan
  110. Algebra

    The value of many things we own depreciates over time. When an asset's value decreases by a fixed amount each year, the depreciation is called straight-line depreciation. Suppose your Ford Escape from Exercise 1 depreciates $1950 per year. a.Let v

    asked by kim
  111. math

    (4.35E-2 - x)(7.56E-2 -x ) ============================ (0.324 + 2x)2 Rearrange to get an expression of the form ax2 + bx + c = 0 and use the quadratic formula (solve for x. This gives: x = 1.05E-2, 0.143 basically i understand they use the quadratic

    asked by bob
  112. English

    I still have some sentences to check. Thank you very much to you all! 1) He was one of the most famous foreigners participating in the efforts against the fascist rebels/the fascists/fascism (are they all possible?) 2) His indifference to accepted values

    asked by Henry
  113. Physics

    Please help! I've tried several times on my calculator and I can't get it right! Find the force of attraction on a 3 kg mass at the surface of a planet given the following information about the planet: mass = 5.98 x 1024 kg, radius = 6.38 x 106 m. Find the

    asked by Sam
  114. PHYSICS

    Find the force of attraction on a 3 kg mass at the surface of a planet given the following information about the planet: mass = 5.98 x 10^24 kg, radius = 6.38 x 10^6 m. Find the force if the radius is doubled to 12.76 x 10^6m Thanks!!

    asked by Sam
  115. Math

    A 10 year old has a heart rate of 210 and a 15 year old has a heart rate of 205 and so on. Right an equation that can be used to find the maximum heart rate for any age. It says the relationship is linear if that helps.

    asked by Paige
  116. Algebra

    A company produced 2,590,000 small appliances in one year and made a profit of 6,590,000. What was the profit of each appliance? Express the answer in scientific notation in two decimals

    asked by Marie
  117. Life orientation

    What, according to the basic conditions of employment act applies with regard to the contraventions?

    asked by Sthembiso
  118. AP CHEMISTRY

    Calculate the solubility of Mn(OH)2 in GRAMS PER LITER when buffered at each of the following. a)pH 7.4 b)pH 9.2 c) pH 11.5

    asked by JIM
  119. Algebra

    Archaeologists and forensic scientists use the length of of human bones to estimate the height of his/her femur f(the bone from the knee to the hip socket), in centimeters using the following formulas: Male h=69.089+2.238f Female: h = 61.412+2.317f a. a

    asked by kim
  120. math

    A 35-foot long ladder is leaning against the wall of a building.How far from the ground is the top of the ladder and how far from the base of the building is its foot if it makes a 20 degrees angle with the wall?

    asked by nestor v. reye,Jr.
  121. HELP! College Physics

    A skateboarder shoots off a ramp with a velocity of 6.7 m/s, directed at an angle of 59° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the

    asked by Angela
  122. AP CHEMISTRY

    Calculate the solubility of Mn(OH)2 in GRAMS PER LITER when buffered at each of the following. a)pH 7.4 b)pH 9.2 c) pH 11.5

    asked by fernatesfsdf
  123. 6th Grade Christian History

    Why were the Christians persecuted by the Romans? At first I thought it was because they didn't believe in God. But then I had the question "to the Romans what was appealing about Christianity? What did they like about the teachings?" Please help!! I am

    asked by ☻i♥zee☻
  124. Math: Limits

    Estimate the limit numerically. lim as x→(approaches to)5 6e^(x − 5) How do I solve it? I don't plug in the numbers do I? Then how do I do this as well? What should I do to solve lim x→(approaches to)− infinity 6xe^(7x) Do I disregard the other

    asked by Nick
  125. b.law

    Over many years, Jake and Jo Bob built up a barbeque ribs business, Hambones, Inc., which caters picnics and parties and sells ribs and corn at county fairs. They have several creditors, including Sauce Supply and First State Bank. Two years ago, in

    asked by parth
  126. chemistri

    what are van der waals forces

    asked by jake
  127. Statistics

    Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected days. Define a new random variable w by w = x + y, the sum of the two waiting times. The set of possible values for w is the

    asked by Roshelle
  128. Physics

    a 60 gram tennis ball completed 5 revolutions in 1.68 seconds. given that the radius was 35 centimeters, what haning mass was used

    asked by Sarah
  129. Literacy

    Are there any good literacy sites?

    asked by ☻i♥zee☻
  130. 6th Grade Christian History

    Why did Christian church come to be ruled by hierarchy? Any and all help is appreciated. ☺♦☻

    asked by ☻i♥zee☻
  131. Algebra

    In 1966, the U.S. Surgeon General's health warnings began appearing on cigarette packages. Data gathered after 1965 indicate that public awareness of the health hazards of smoking has had some effect on consumption of cigaretts. The percentage, p, of the

    asked by kim
  132. arithmetic

    find comparsion as a ratio reduce to lowest term of 47ft and63yd.

    asked by janice brown
  133. english

    how to start an opening paragrph for explaning what love and infatuation means

    asked by alexis
  134. Organic Chemistry

    How do you synthesize methysulfonyl benzene from Benzene?

    asked by Tom
  135. Math ?

    If p is a positive  integer and is greater than 3. How many prime integers are there in 3p including 1 and 3p

    asked by Help
  136. Math ?

    If p is a positive  integer and is greater than 3. How many prime integers are there in 3p including 1 and 3p

    asked by Help
  137. english

    What is the underlying message of all of Arthur Jarvis’s writing? How does reading his son’s writing affect the behavior of James Jarvis?

    asked by john
  138. 6th Grade Christian History

    1. when he roman government began to persecute Christians under Nero, a) Christianity almost disappeared b) Christians had to cremate their dead c) Jews hid themselves in their homes d) Christianity was outlawed 2. the bishop of Rome was also known by the

    asked by ☻i♥zee☻
  139. business

    what process do you follow to come to a conclusion

    asked by Anonymous
  140. math

    A rate of 40 percent could be expressed as 2/5.true or false

    asked by Anonymous
  141. math

    what's 60% of $47,000.00

    asked by Dee
  142. statistics

    if the average number of textbooks in professors' offices is 16, the standard deviation is 5, and the average age of the professors is 43,with a standard deviation of 8 ,which data set is more variable ?

    asked by linda
  143. physics

    at 3.68100017 kHz the reactance in a circuit of a 9 uF capacitor and an inductor are equal in magnitude. what is the value of the inductor? a. .000020 H b. .000020 mH c. .000021 uH d. .000021 mH

    asked by fatih
  144. Chemistry

    The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism: step 1 slow: H2O2 + I^- = H2O + OI^- step 2 fast: H2O2 + OI^- = H2O + O2 + I^- 1) What is the equation for the overall reaction? Use

    asked by Hannah
  145. physics

    an RlC circuit has a resistance of 4 kOhm, a capacitance of 33 uF, and an inductance of 23 H. if the frequency of the alternating current is 2/pi kHz, what is the phase shift between the current and the voltage.

    asked by fatih
  146. math

    A 1O-m ladder rests againts the wall of a house.The foot of the ladder on the ground is 1.3 m from the wall.What angle does the ladder make with the wall?

    asked by NIRVANA RIZA A. GARON
  147. physics

    An RLC circuit has voltage supplied to it at a frequency of 13.0 kHz with a phase difference between the current and the voltage of magnitude 0.20 rad. If the circuit has a capacitance of 5.0 µF and an inductance of 0.050 H, find the resistance of the

    asked by fatih
  148. English

    Here are some more sentences I really need you to check. Thank you. 1) His work (better job) consists in changing the words of the news as the Party wants to, in order to control people. 2) The party aims to eradicate individuality. The information

    asked by Henry
  149. Math

    Mr. Rogers wants to fence in a rectangular garden next to a straight section of the Scioto River. He has 330 feet of fencing to do the entire job. He doesn’t need fencing along the river, and there is a 4.5 foot wide clearance for a gate at one end. What

    asked by Sandy
  150. chemistry

    Write the balanced equations for the following examples: a) potassium hydroxide + sodium sulfide --> potassium sulfide + sodium hydroxide b) carbon disulfide + oxygen --> carbon dioxide + sulfur dioxide

    asked by Nene
  151. PHYSICS

    Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!

    asked by Kelly
  152. ALGEBRA

    NEED TO FIND THE DOMAIN AND RANGE OF F(X)=2X-3

    asked by CAROLYN
  153. Physics

    A mass sits at the top of a 2 meter long ramp inclined at an angle of 30 degrees (to the horizontal). When the mass is released, it slides down the ramp and then onto a level floor. If both the ramp and the board have a coefficient of .25 (Friction), how

    asked by Mary
  154. Physics

    A mas of 100 Kg hangs from a cable secured to a steel pole and supported by another cable as shown below. Find the tension (T) in the support cable and the force (F) on the steel pole.

    asked by Mary
  155. physics

    A skater of mass 74.5 kg initially moves in a straight line at a speed of 5.10 m/s. The skater approaches a child of mass 37.5 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?

    asked by sally
  156. Algebra

    n 1966, the U.S. Surgeon General's health warnings began appearing on cigarette packages. Data gathered after 1965 indicate that public awareness of the health hazards of smoking has had some effect on consumption of cigarettes. The percentage, p, of the

    asked by kim
  157. chemistry

    MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O

    asked by princess
  158. chemistry

    MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O

    asked by princess
  159. chemistry

    What must be known for the rate constant to be calculated from the rate law?

    asked by princess
  160. chemistry

    if i have 5.6 liters of gas in a piston ata pressure of 206 kPa and compress the gas until its volume is 4.8L, what will the new pressure inside the piston be? how do i that problem?

    asked by bobby
  161. physics

    An electron is a subatomic particle (m = 9.11 x10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.11 x 105 m/s to a final velocity of 1.67 x 106 m/s while traveling a distance of

    asked by Natasha
  162. Math

    Each cube below is made up of smaller cubes, but the large cubes are not solid. They had tunnels through them. • The first cube originally had 27 small cubes, but the tunnel removed 3 cubes. • The second cube originally had 64 small cubes, but two

    asked by Jiyeon
  163. physics

    A small plane mass 600 kg lifts off from the runway at a speed of 145 Km/Kr. 2 Minutes later, the plane has reached an altitude of 300 meters and its airspeed has dropped to 90 Km/Hr. Assume the power output of the engine was constant during this time.

    asked by Mary
  164. precalc!!!!!

    The point (5,-2) lies on the graph of y=f(x), and assume f^-1(x) exists. Find the corresponding point on eAch graph. A). Y=f^-1(x) I get (-5,2) B). Y=-f^-1(-x)+4 I get (5,2) C). Y=f^-1(x+2)+3 I get (-7,5) Did I get these right?

    asked by L.Bianchessi
  165. math

    If f(x)= x^1/2 if x¡Ý 0 and -(-x)^1/2 if x>0 then the root of the equation f(x) = 0 is x = 0. Explain why Newton¡¯s method fails no matter which initial approximation p_0¡Ùo is used. Illustrate your explanation with a sketch.

    asked by Lanloxely
  166. A A U

    How can i write a seminar report on Eutrophication

    asked by Mudi
  167. precalc!!!!!

    The point (5,-2) lies on the graph of y=f(x), and assume f^-1(x) exists. Find the corresponding point on eAch graph. A). Y=f^-1(x) I get (-5,2) B). Y=-f^-1(-x)+4 I get (5,2) C). Y=f^-1(x+2)+3 I get (-7,5) Did I get these right?

    asked by L.Bianchessi
  168. precalc!!!!!

    The point (5,-2) lies on the graph of y=f(x), and assume f^-1(x) exists. Find the corresponding point on eAch graph. A). Y=f^-1(x) I get (-5,2) B). Y=-f^-1(-x)+4 I get (5,2) C). Y=f^-1(x+2)+3 I get (-7,5) Did I get these right?

    asked by L.Bianchessi
  169. chemistry ap ...urgent! please help me!

    The measurement of pH using a glass electrode obeys the Nernst equation. The typical response of a pH meter at 25.00 degrees C is given by the equation: E(measured)= E(ref) +.591pH where ref contains the potential of the reference electrode and all other

    asked by Kirti
  170. Precalculus

    Use one of the identities cos(t + 2πk) = cos t or sin(t + 2πk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(19π/4) (b) sin(−19π/4) (c) cos(11π) (d) cos(53π/4) (e) tan(−3π/4) (f) cos(π/4) (g) sec(π/6+ 2π)

    asked by Kaleen
  171. Pre Calculus

    Use one of the identities cos(t + 2ðk) = cos t or sin(t + 2ðk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(17ð/4) (b) sin(−17ð/4) (c) cos(17ð) (d) cos(45ð/4) (e) tan(−3ð/4) (f) cos(7ð/4) (g) sec(ð/6+2ð)

    asked by Stephanie823
  172. geometry

    In the accompying diagram of circleo, diameter ad,chord AE,ans secantsCAB and CDE are drawn ; m angle BAD=40;and m arch AE=5((m arch ED) what is the measure of ACE?

    asked by Vanna
  173. Pre Calculus

    Use one of the identities cos(t + 2ðk) = cos t or sin(t + 2ðk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(17ð/4) (b) sin(−17ð/4) (c) cos(17ð) (d) cos(45ð/4) (e) tan(−3ð/4) (f) cos(7ð/4) (g) sec(ð/6+2ð)

    asked by Stephanie823
  174. history

    Which U.S. Supreme Court decision made it illegal to achieve diversity through the use of racial quotas?

    asked by Anonymous
  175. Physics (dynamics)

    A 47.0 kg slab rests on a frictionless floor. A 18.0 kg block rests on top of the slab. The static coefficient of friction between the block and the slab is 0.50, while the kinetic coefficient of friction is 0.40. The top block is acted upon by a force of

    asked by Andrew
  176. math

    In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that none of those patients had side effects.

    asked by karen
  177. math

    The odds against pats winning the election are 6:7 with these odds, what is the probablity that pat will win the election.

    asked by karen
  178. math problem

    please help me simplify ∛(-1)

    asked by Lavern
  179. physics

    An iron wire has a cross-sectional area equal to 1.20 10-5 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 34.0 A. (a) How many kilograms are there in 1.00 mole of iron? 1

    asked by pam
  180. math

    17. Burger King's Drive-Through: Suppose that cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 PM. A random sample of 40 one-hour time periods between 12:00 noon and 1:00 P.M. is selected and has 22.1

    asked by tomas
  181. statistics

    16. Based on tests of the Chevrolet Cobalt, engineers have found that the miles per gallon in highway driving are normally distributed, with a mean of 32 miles per gallon and a standard deviation 3.5 miles per gallon

    asked by tone
  182. physics

    Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. If his arms are capable of exerting a force of 1820 N on the rope, what is the maximum speed (in meters/second) he can tolerate at the lowest point of his swing? His mass is 83.0 kg,

    asked by jess
  183. physics

    a ball is thrown at an angel of 40 degee above tghe horizontal.the ball clears the fence whis is 85 metre away.what is the inital velosity of the ball if we assume the ball is thrown at the same elevation of the fence

    asked by raj
  184. Math - HELP !

    there are 50 students in the seventh grade , 62 percent of these students are involved in the drama club.how many seventh grade students are in the drama club ?

    asked by Remy
  185. PHYSICS

    Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!

    asked by Jake
  186. Math

    This problem pertains to Cuisenaire Rods: 1-white 2-red 3-green 4-purple 5-yellow 6-dark green 7-black 8-brown 9-blue 10-orange Question: (a) If an all-brown train is equal in length to an all-orange train, what can be said about the number of brown rods

    asked by James
  187. Math

    simplify: 22/sqr18 + sqr7

    asked by Billy
  188. rosemont

    a pizza was sliced 10 pieces. bill ate 2/10 of the pizza how much of the pizza was left?

    asked by angel
  189. math

    In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial, two patients were selected at random. Find the probability that both the patients had side effects.

    asked by karen
  190. US History Since 1876

    How is the KKK and the Universal Negro Improvement Association the same? I am having trouble with coming up with reasons on how they were the same. I have several different reason's why they are not but I need help with this please!!

    asked by Jason