August 5, 2011

  1. english

    Tim likes soup,so Mary brought tomatoes. which is it a compex interrogative or declarative
  2. Advanced Functions

    how do i solve this linear inequality equation x+2 divided by 2 greater than/equal to x-2 divided by 4 answer is [-10, infinity)
  3. precalc(help!!)

    I have been trying to figure this out for hours and I still cant figure it out! Please help me.. The question says to find the value of theta when sin(theta)=0 the answers include equations like pi/2 +2piK 0=2piK pi/2+pik pik
  4. middle childhood psychology

    what is the premises for family therapy
  5. Math209

    A particular rat given n trials in a maze can run through the maze in t minutes, where t=6+20/n+2. How many trials are needed so that the rat can runthrough the maze in exactly eight minutes?
  6. Com/155

    my assignment is to Write a 150- to 200-word paragraph to explain how purpose, audience, tone, and content impact academic writing.
  7. PHYSICS -HELP

    A traverse periodic wave described by the expression y=5sin (pi x/3 - 30pi t) (where y and x are in meters and t is in seconds) is established on a string. By reflecting this wave from a rigid support, standing transverse waves are set up on a stretched
  8. Com/155

    can someone help me on this. What questions might you need answered before writing an academic essay? Why?
  9. PHYSICS - HELP

    A spring id vertically, as shown below, and a 500g mass is hung from its lower end. The EQUILIBRIUM extension of the spring is observed to be 10.0cm. (1) What is the spring constant of the spring? ANSWER: 49N/m (B) If the is pulled down by 5.00cm and
  10. PHYSICS - HELP

    Two ingenious 120 student students decide to use an oscillating mass on a spring to check the shutter (exposure) time of their camera. They set up vertically alongside the mass and spring. A pointer attached to the mass allows the scale on the meter stick
  11. University of phoenix

    What types of social conflict exist in American culture today? Are they productive conflicts, producing results for those who need help? Explain your answer.
  12. Math

    What is the smallest positive integer value n, for which 2700n is a multiple of 35?
  13. Math

    Given 4w = 5x and 2x = 3G , find the ratio w:x:y
  14. Statistics

    I have recently administered an employee survey at a call center. I found a Pearson r of -.66 between the employees' ages and their scores on an employee engagement scale. What does this finding represent/mean? Also, there is a relationship between gender
  15. science

    A uniform beam 6m long and weighing 4kg rest on support p and q placed left and right 1m from each end of the beam. Weight of mass 10kg and 8kg are placed near p and q respectively. On ecah end of the beam. Calculate the reation at p and q
  16. University of Phoenix

    inventory turnover ratio analysis for Dell Inc.FINANCIAL STATEMENTS April 29,2011 and January 28,2011
  17. algebra 2

    A player bumps a volleyball with an initial vertical velocity of 20 ft/s. The height of the ball can be model by the function h(t) = -16t2 + 20t + 4, where h is the height in feet and t is the time in seconds. a. What is the maximum height of the ball? (
  18. vector calculus

    (a)Find the work done by the field F= yi+zj+xk in travelling around the curve X^2+y^2=4, z=0. (b) state stokes theorem and verify it for the field F given in (a), over the disc x^2+y^2
  19. mechanical physics

    how to compute capacitance for Btu in starting capacitor
  20. chemistry

    in which location, would the boiling piont of water will be highest ? A) new mexico where pressure is 710torr B) new york city where pressure is 760torr C) mount everest where pressure is 244torr D) a pressure cooker where pressure is 760torr
  21. Math Trigonometry

    determine the amplitude and period of each function. 1) y = 3sin (2x-pi/2) 2) y = -3sin2 (x-pi/4) 3) y = 2cos (2x+pi) 4) y = -2cos2 (x+pi/2)
  22. English

    Edit this sentence. Most students do not like English
  23. chemistry

    which of the following correctly compare the rate of diffusion of oxygen to that of hydrogen 1) 1:4 2) 4:1 3) 16:1
  24. chemistry

    bond angle and hybridisation of oxygen in water is ?
  25. chemistry

    1. A student wanted to measure the amounts of (Ca2+) in the human blood. She got 1.00ml which she treated with Na2C2O4 solution. The resulting Ca2C2O4 precipitate was filtered and dissolved in dilute H2SO4 to release C2O42- into solution and allow it to be
  26. chemisty

    2. (a) Given the following equations and H0rxn at 250C H3BO3(aq) ¨ HBO2(aq) + H2O(l) ∆H0rxn = -0.02kJ H2B4 O7(s) + H2O(l) ¨ 4HBO2(aq) ∆H0rxn = -11.3kJ H2B4O7(s) ¨ 2B2O3(s) + H2O(l) ∆H0rxn = +17.5kJ (i) Calculate ∆H0rxn for the reaction
  27. chemistry

    7. (a) Determine the crystal lattice energy for LiF(s) given that the ∆Hsubl for Li = 155kJ/mol, ∆H0f for F(g) = 78.99kJ/mol, IE1 of Li = 520kJ/mol, EA for Fluorine = -322kJ/mol and the ∆H0f LiF(s) = -589.5kJ/mol (b) For the following reactions:
  28. physics..(HELP ME WITH MY DOUBTS)

    if a ship moving to South and wind is flowing due West(at given velocities),we can find the angle by which the ship is deviated.Does here momenta of wind and ship matters?If it had been water at same velocity instead of wind, what would have happened?....
  29. PHYSICS

    Evaluate the following intergal:- çMvdv , with upper limit 'v' and lower limit 'u'
  30. PHYSICS (conceptual doubt)

    If a professional jumper jumps in a running train and remains in air (say for ~5 sec),does he return back to his orginal position?
  31. chemistry (doubt)

    We know that all matter are made up of atoms and all atoms consists of electrons ,protons, neutrons ,etc.Then why do we find such a variety of matter?Why is wood not gold?
  32. algebra

    using multiplication principle -2/5y=-14/15
  33. consumer math

    Mae Assurian is an electrician. She works from 6:45 a.m. to 3:30 p.m. Monday through Friday, and takes a 45-minute break for lunch. How many hours per week does Mae work?
  34. algebra

    2p2+4q4/4p4-8q2
  35. Geometry

    Find the slope of any line parallel to the line passing through G(2,-3) and H(-1,4). I believe the answer is 7/-3, but was wondering if it should be written 7 7 - / or / ? 3 -3
  36. Geometry

    Which of the following statements from Euclidean geometry is also true of spherical geometry? a. A line has infinite length. b. Two intersecting lines divide the plane into four regions. c. Two perpendicular lines create four right angles. d. The
  37. Geometry

    Find the slope of a line perpendicular to the line passing through the given points P(6,-1),Q(3,-2). -3?
  38. critical thinking

    can claims be sujective andobjective
  39. Chemistry

    How many milliliters of a 0.1 Molar NaOH solution is needed to neutralize 1 liter of lemonade containing 25% citric acid?
  40. english

    the wave leapt .. add simile
  41. math

    572 is what percent of 680
  42. Math

    On May 12, Bob Campbell accepted a $5,000 note in granting a time extension of a bill of goods bought by Rick Ween. Terms of the note were 8% for 120 days. On July 8, Bob needed to raise cash and discounted the note at Rick's bank at a discount rate of 9%.
  43. geology

    I need ideas for paper for using earth's resources responsibly
  44. Writing

    I need help.. Did I find all of the adverbs, adjectives,comparatives, and superlatives in the following? Recently (adverb) I watched the 2006 version of The Hills Have Eyes it was different (adjective) from the 1977 version. The movie is about a family
  45. Science

    What is principal of the experiment to determine the ion conduct in the given iron ore by using an external indicator?
  46. Biomechanics

    How do you compute the additional work done after a stretch-chorten cycle?
  47. algebra

    is the solution of -2x>1/9 -2x
  48. algebra

    I have a question about exponents of rational expressions. I have two answers for one problem. One was written on a university mathlab and the other from a calculator. (3a^3/2)*(-7a^1/5) = -21a^17/10 (3a^3/2)*(-7a^1/5) = -21^a4/10 Can you tell me which is
  49. math

    Given the triangle shown, describe the function values in term of the triangle's two legs /| /a| y / | /o__| x Find: sec a Find: csc o
  50. chemistry

    can someone explain the leveling effect in chemistry or provide a good link please? in my chem book it says something like HNO3
  51. Chemistry

    Calculate the enthalpy of combustion of acetylene(per mol acetylene)using bond enthalpies and energy diagram
  52. Physics

    a 9.50-g bullet. moving horizontally with an initial speed vi , embeds itself in a 1.45-kg pendulum bob that is initially at rest. The length of the pendulum is L=0.745m. After the collision, the pendulum swings to one side and comes to rest when it has
  53. Math

    Find the quotient a^2x^3 + (5a^2b+ab)x^2 + (ab^3+5ab^2)x + b^4 divided by ax + b ^ symbolize power so a^2x^3 means a squared times x cubed.
  54. Math

    Roiger made deposits of $900 semiannually to the bank, which pays 6% interest compounded semiannually. After 7 yrs., he makes no more deposits. What would be the balance in the account 8 yrs. later from the last deposit?
  55. algebra

    Solve using the multiplication principle. 3/4x=9/10. Would the answer be 2/5?
  56. CHEMISTRY

    Explain, in terms of particles, concentration, and reaction rate, what you expect to happen when methane gas (CH4) and hydrogen sulfide gas (H2S) are sealed in a flask and reach a state of equilibrium. CH4 (g) +2 H2S (g) -->
  57. human services

    what are four steps an organization should take to change its personnal profile? What should the organization consider before developing such a plan?
  58. Math

    To obtain the graph of y=-3sqrt(x+1) from the basic graph y=sqrt(x) the transformations are first a stretch vertically by 3, then a reflection vertically, followed by a shift left of one...true or false?
  59. journalism

    Select one of the following assignments and conduct background research online and in your local newspaper. Then write a 250-300 word memo describing what you expect the most important issues to be on your new beat and whom you expect to be your most
  60. Clinical Procedures

    X-Rays, or ______, are diagnostic tools used to visualize internal organs. A. radiograms B. sonograms C.Radiographs D. tomograms is it C
  61. math

    True or false? Given the basic graph y=x^2 and the transformations: a vertical stretch by three followed by a shift right 4 units, the resulting equation is y=3(x+4)^2
  62. chemistry

    How many moles of elemental chlorine (Cl2) is required to have the same number of atoms as two moles of of elemental phosphorus (P4)
  63. Precalc

    I am having trouble figuring out this question Jan observes a buoy bobbing up and down through a total amplitude of 8 feet. Beginning at the top of the wave, if the buoy completes a full cycle every 8 seconds, what is the height of the buoy relative to its
  64. Physics

    What are the independent and dependent variables in the following scientific investigation? Controlled variables are also being used in this investigation. Identify the controlled variables as well. A chemistry student is conducting an experiment to
  65. math

    If f(x)=x-7 and g(x)=sqrt(4-x), what is the domain of the function f/g? a. (-infinity, 4) b. (-infinity, 4] c. (4, infinity) d. [4, infinity) e. (4, 7) U (7, infinity)
  66. Physics

    Measurements can be described as accurate and/or precise. Define accuracy and precision and give examples of how those terms could be used to describe a measurement.
  67. Precalc

    Okay for this question I know I am supposed to use the law of sines. But how can i tell what side is what? In right triangle ABC, a = 120 and c = 140, and ÐC is the right angle. Solve the triangle. Round to the nearest tenth, if necessary.
  68. physics

    Accuracy is how close a measured value is to the actual (true) value. Precision is how close the measured values are to each other.
  69. Precalculus

    Given f(x)=x^2-1 and g(x)=1/(x-1), the composition f(g(x)) is... a. [(1/(x-1))^2]-1 b. (1/(x-1))-1 c. 1/((x^2)-2) d. 1/(x^2)
  70. Math

    Find the inverse of V(t)=200(1-t/49)^2
  71. chemistry

    What is the new crystal structure and formular of NaCL + C6H12O6
  72. math

    The domain of the function f/g for f(x)=sqrt(x-2) and g(x)=sqrt(x+4) is a. x is not equal to -4 b. x is not equal to 4 c. [2, infinity) d. [-4, infinity)
  73. Math

    Find the inverse of V(t)=200(1-t/49)^2
  74. Chemistry

    A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease. •State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. •Distinguish between the
  75. Adverbs & Adjectives

    Can you please tell me if I have identified the correct adverbs and adjectives in the following paragraph. If not could you please point me in the right direction? It won't be the same for moviegoers in New York or LA, where they're used to *seeing* their
  76. careers in early childhood education

    All of the following include the three trends that emerge in the way children relate to each other Except: a.)children become more sensitive to their play partners. b.)children begin to use language more effectively in their interactions. c.)cooperative
  77. Chemistry

    Calculate the enthalpy of combustion of acetylene(per mol acetylene) using bond enthalpies and energy diagram
  78. Precalc

    okay sorry last two questions! I promise! The sun always illuminates half of the moon’s surface, except during a lunar eclipse. The illuminated portion of the moon visible from Earth varies as it revolves around Earth resulting in the phases of the moon.
  79. careers in early childhood education

    The area where children's talents skills and interests overlap is called their A.) cognitive peak B.) Aha experience C.)integration area D.) Creativity intersection
  80. Chemistry practice

    Glycine is the amino acid used to make proteins a)for each mole of glycine that burns,973.49k/mol of which is libarated eqution and the values of delta Hf^o for the products of combustion to calculate the enthalpy of formation for glycine.Represent your
  81. math

    Suppose you have a 64 gigabyte flash storage system, with a 4096 byte page size. How big would the flash translation table be, assuming each page has a 32 bit address, and the table is stored as an array. I think the answer is 20 pages, does that sound
  82. algebra

    please tell me if these are right. Soybean meal is 12% protein, cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240-lb. mixture that is 11% protein? 80 pounds soybean and 160 pounds of cornmeal Trains A and B are
  83. Russian

    A study of the causes of the American Revolution of 1776, the French Revolution of 1789, and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when
  84. biology

    Hey, I was wondering out of alveoli and red blood cells which had the larger surface area to volume ratio, and whether the one with larger would be generally more efficient in diffusion. Any help or other info on this would be very much appreciated :)
  85. chemistry

    if the rms speed of NH3 molecules is found to be 0.510 km/s what is the temperature (in Celcius)? can someone solve this using the formula c=((2.55*R*T)/M)^1/2 c is the speed r is 8.314 constant M is the molar mass of NH3 17.031
  86. Writing

    Did I identify all of the adverbs, adjectives,comparatives, and superlatives? Recently (adverb) I watched the 2006 version of The Hills Have Eyes. It was different (adjective) from the 1977 (adjective) version. The movie is about a family that ends up
  87. Math

    If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. 6x − 2y = 2, 9x − 3y = 1
  88. math

    4 1/2 - 2 7/8
  89. Precalc(attn Bobpursley)

    Hi i posted this before but I wanted to ask Bobpursley a few questions on his reply 1)For the first function you used cosine when they ask for sin, why is that? Also why did you put .5 in the beginning and end of the function? 2)For the second question why
  90. math

    -4 3/8 + -5 3/4
  91. math

    Xavier's dining room table was unstable because one leg was shorter than the others. He placed a 7/8 inch thick piece of wood under the short leg, and it became even with the other legs, which are 18 3/4 inches long. How many inches long was the short leg
  92. math

    how many rectangle whose perimeter is 28cm?
  93. Physics

    A 3.30-g bullet, traveling at a speed of 492 m/s, strikes the wooden block of a ballistic pendulum, such as that in Figure 7.14. The block has a mass of 232 g. (a) Find the speed of the bullet/block combination immediately after the collision. (b) How high
  94. Physics

    A 3.0-kg cart is rolling along a frictionless, horizontal track towards a 1.2-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain