Questions Asked on
November 21, 2008

  1. Physics center of gravity

    a uniform bridge span weighs 50000N and is 40m long. An automobile weighing 15000N is parked with its center of gravity located 12m from the right pier. What upward support does the left pier provide?

    asked by Kayla
  2. math

    the population of a southern city follows the exponential law. If the population doubled in size over an 18 month period and the current population in 10000, what will be the population 2 years from now? the equation for the exponential equation is: A=ao e

    asked by kayla
  3. Algebra word problem help

    The average walking speed R of people living in a city of population P,in thousands, is given by R=0.37InP+0.05, where R is in feet per second. a.) The population of Honolulu, Hawaii is 395,790. Find the average walking speed. b.) A city's average walking

    asked by Shawn
  4. Chemistry - please help

    An anyhdrous metal chloride, X, contains 37.4% Cl. X is a reducing agent, 0.895 g requiring 23.60 cm^3 of 0.100M KIO3 for complete oxidation in 3- 9M HCl. X reacts with potassium chloride to form an adduct Y, containing 14.8% K. Identify X and Y, and

    asked by Beth
  5. science-CHEM

    Fe+3 + SCN- ==Fe(SCN)+2 if adding NaOH will form precipitates, but what is the precipitates' formula? And after this reaction, if we add HCl to the reaction, will the precipitates dessolve? What does the HCl affect the reaction? THX

    asked by Nicola
  6. Chemistry. Percent mass...

    A 1.009 g mixture of the solid salts Na2SO4 (molar mass= 142.04) an Pb(No3)2 (molar mass= 331.20) form an aqueous solution with the precipitation of PbSO4 (molar mass= 303.26). The precipitate was filtered and dried and its was was found to be .471 g. The

    asked by Sarah
  7. physics

    A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 32.0 m/s. a) What is the amplitude if the maximum displacement is 28.0 cm and the total distance travelled by the wave is 26.0 m? b)What is the wavelength of the wave?

    asked by Anonymous
  8. BIO

    what is cell integrity? as in, a definition or explanation

    asked by kimora
  9. Chemistry. Check my answer please!

    A 1.994 g sample of gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temp. above 170 C in a crucible until a constant mass is reached. The mass of anhydrous CaSO4 salt is 1.577 g. Calculate the percent by mass of water in the hydrated

    asked by Sarah
  10. physics

    Show that for 1 kg of pure gold the volume of water displaced is 51.8 cm^3 I know that the density of pure gold is 19.32 gm/cm^3 so 1 kg/19.32 gm/cm^3= 0.05175 ? I have come along way with this problem and feel like I am close, but now I need help. How do

    asked by randy
  11. Physics

    If the air temperature is the same as the temperature of your skin (about 30 degrees Celcius), your body cannot get rid of heat by transferring it to the air. In that case, it gets rid of the heat by evaporating water (sweat). During bicycling, a typical

    asked by Angel
  12. art

    What exactly are modern and contemporary art? For school, I have to paint a piture that relates to a certain part of speech as well as a certain type of art era/period. I'm almost finished, so now i just want to know how to EXPRESS modern or maybe even

    asked by Melanie
  13. biology

    Cellular Respiration and Photosynthesis co-exist as paired metabolic processes. Photosynthesis uses light energy to convert carbon dioxide into glucose, a simple sugar, in two steps, the light dependent and light independent reactions. Oxygen is produced

    asked by Anonymous
  14. Math algebra

    Sarah’s two student loans totaled $12,000. One of her loans was at 6% simple interest and the other at 9%. After one year, Sarah owed $855 in interest. What was the amount of each loan?

    asked by Julissa
  15. college algebra

    Kathy bicycles 5km/h faster than Javier. In the same time it takes Javier to bicycle 49km, Kathy can bicycle 63 km. How fast does each bicyclist travel?

    asked by karen
  16. Microecomonics (am i right..URGENT PLEASE)

    11. If an economy has to sacrifice increasing amounts of good X for each unit of good Y produced, then its production possibilities curve is: (Points: 3) bowed out from the origin. I PICKED THIS ONE bowed in toward the origin. a straight line. a vertical

    asked by Heidi
  17. AED

    What skills will you teach and how will you teach them in mathematics. need 200 words and all I have so far is: I can teach this concept to students in a lower elementary grade and to students in a middle school grade by

    asked by troyer0269
  18. physics

    Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal

    asked by Anonymous
  19. Math

    Here is my question; Business and finance. Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line if

    asked by A.W.
  20. Physics

    A boy stands on the edge of a building 7 meters high and throws a rock at 60-degree angle. The release point from his hand is 1.6 meters above his feet(so the release point above the ground is 8.6 meters.) The rock lands on the ground 15 meters away from

    asked by Anonymous
  21. Life

    This is my second year in college,I've gotten B's during my freshman year and now I basically failed one of my major required course. I don't know what to do. Honestly I went into this for the potential money and to please my parents. I know people who

    asked by Conflicted College Student
  22. physics

    A hammer taps on the end of a 3.32 m long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by

    asked by Anonymous
  23. com 220

    While correct grammar and usage are basic ecpectations in all kinds of writing, the larger aspects such as content and development are given far greater weight than style and mechanics, especially at the cllege level. In a 100-point paper, for example,

    asked by anonymoys
  24. Math

    Here is my question: Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than

    asked by A.W.
  25. biology

    Choose two structures or organelles of the cell (not used in part one above.) Describe these two or organelles – what do they look like, what are they composed of? Then explain how these plant or animal cell structures or organelles function. How do

    asked by Anonymous
  26. science

    Fill up the blanks. When a crystal of potassium permaganate is gentle placed in water itdiffues-------(fast/slowly).

    asked by mimo
  27. Literature

    I am writing a book report on Gulliver's Travels in which I have to compare myself with one of the characters. I have chosen Lemuel Gulliver, and I need an attention getter. This is what I have "Every once in a while we run on to characters in literature

    asked by Anonymous
  28. Logical Fallacy

    Which logical fallacy is, "We don't need to change our registration process because everyone is already familiar with the way we do things and changing it could be confusing." I think it might be overgeneralization.

    asked by Tabetha
  29. statistics

    do all populations- micheline tires, voters, people with high blood pressue...- produce a normal curve? True or False Is this false because all samples produce normal curves and not the populations, and don't you have to have a range of values and

    asked by Sophie
  30. college algebra

    Lisa can shovel snow from her driveway in 50 min. Jim an do the same job in 55 min.How long would it take Lisa and Jim if they worked together?

    asked by karen
  31. 6th grade Social Studies

    What are some current events going on in Peru today!!??

    asked by MILEY
  32. math please help

    You will be given a set of numbers to play this game. Two players start with a pile of counters and take turns choosing numbers from their set (repeats are allowed) to remove from the pile. The first person to leave 0 counters wins. For example, if you are

    asked by Kayla
  33. Cultural Diversity

    Did African Americans immigrate or colonize in the US? I need some help with this

    asked by Nikia walker
  34. hca 210 measuring quality

    350- to 700-word paper in APA format describing two approaches or indicators to measuring patient outcomes. Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient outcome is one

    asked by Anonymous
  35. CALCULUs

    For all x in the interval [-11,13] the function f is defined by x^3(x+3)^4 On which two intervals is the function increasing? Find the region in which the function is positive

    asked by james
  36. PSY 210

    Why is it that children raised in the same family can be so different personality wise?

    asked by MIKE THOMPSON
  37. Health

    Is there any way cat fur can be harmful to human health? For example, I've heard that it can cause cancer in the body. Are these just fiction or fact? THanks -MC

    asked by mysterychicken
  38. Business English

    How do i convince my supervisor that this change is cost effective and also convince my employee that it's necessary and to their benefit?

    asked by Joycelyn
  39. Science

    True/False - A generator that doubles the electrical energy from a wall outlet without any additional input of energy will work. - The total amount of energy in the universe is constant. thank you

    asked by Jake
  40. Physics

    A free electron is captured by a proton forming a Hydrogen atom. If the electron ends up in the ground state then what is the wavelength of the photon it emits during this process?

    asked by H
  41. physics

    The wave speed on a string is 148.9 m/s when the tension is 73.4 N. What tension will give a speed 184.9 m/s?

    asked by Anonymous
  42. chemistry

    how would you do the Empirical And Molecular formula stuff i got three elenments that are Carbon with 78.23% , Hydrogen with 6.56% , and Nitrogen with 15.21%

    asked by james
  43. Chemistry

    What does a fluoride ion have in common with a neon atom and a sodium ion?

    asked by Bubba
  44. calculus!!

    f(x)= x^3/x^2-4 defined on the interval [-18,20] f(x) is concave up on the region ? to ? and ? to ? the inflection points are ?, ? and ?

    asked by henry
  45. chemistry home work

    2 examples on sediment plz reply fast...

    asked by madi
  46. precalculus

    what is an expression of x(line cross) involving r(line),s(line) and t(line). answer: 3r(line)-s(line)+t(line) In the drawing there are 3r's, -s, t,and x. All vectors are going in the same direction. is the answer correct?

    asked by Mary
  47. math

    If plywood sheets sell at 4ft. x 8ft. a sheet and I want to and I want to build a 12ft x12ft kitchen ; how many do I need to buy? Can anybody tell me how to set this problem up?

    asked by A.W.
  48. communication

    I am doing a power point on red cross and the disaster responses they have this is one thing I would like to cover but can not find anything up to date can anyone help? What are new technology available to enhance disaster preparedness in the red cross

    asked by april
  49. company law

    in a parntership at will (without written agreement), if the capital of the business was at the beginning set by only one of the partner, but all spent by the other for the company, what are the liabilities in case of debts?

    asked by sabi
  50. Cultural Diversity

    What are pertinent issues between Native Americans and the federal government?

    asked by Nikki
  51. Business English

    How long has this situation been going on

    asked by Joycelyn
  52. Poetry

    They say that the only word in the dictionary that can't be rhymed is orange but when i tested this out, silver seems one that has no rhyme (one compund). Am i right? Thanks -MC

    asked by mysterychicken
  53. com 220

    Feedback on writing can come from several sources. In other words, writing is usually not a solo activity, but is best done in community.

    asked by anonymoys
  54. physics

    what is reason for saturation current in reversed biased diodes

    asked by aman
  55. science

    A free electron is captured by a proton forming a Hydrogen atom. If the electron ends up in the ground state then what is the wavelength of the photon it emits during this process?

    asked by H
  56. health care

    Is Telemedicine really a good way to communicate with other health care providers or patients? I would think this would take away from the privacy part of patients.

    asked by april
  57. Science

    Why do some minerals have large, defined crystal faces, while others are not visible?

    asked by Casey
  58. Cultrual Diversity

    Do stereotypes, prejudices and/or grouping have an effect on standardized testing? Or vice versa?

    asked by Nikia Walker
  59. chemistry

    I NEED A MODEL OF THE ELEMENTS OF CHLORINE

    asked by LAURA
  60. English

    How do you punctuate Did she say, How old are you Thanks, Susan

    asked by Susan
  61. Unscramble

    Can you unscramble afsedrniru? It is either a compound or collective noun.

    asked by Clara
  62. environmental science

    what is a specific environmental problem within energy conservation

    asked by Anonymous
  63. chemistry

    determining the most cost effective limiting reactant for the synthesis of asprin. Amount of asprin 290 mg, Salicylic

    asked by aqsa
  64. business

    When writing a Hypothesis , how would you answer this qyuestion? What skills or qualifications do you possess that will help you undertake this project?

    asked by gail
  65. ethnic

    what legislation is linked to the issue

    asked by patricia
  66. company law

    If a couple run a business and work as a partnership at will, what are the consequences in case of dispute? If one of the partner took all the decisions for the management of the business without noticing the other, is it illegal?

    asked by sabi
  67. math

    (x+3)^3

    asked by fareeda
  68. Biology

    why do people conduct an experiment using pH? whats the purpose of the pH scale? why do we use it?

    asked by Kate
  69. chemistry

    How many moles of gas does it take to occupy 120L at 2.3atm and 340K

    asked by brandi
  70. Business English

    What are two or three solution that might improve the efficiency of my office What does each solution involve and how much work and money is required to introduce that change How exactly does each change solve the problem? which is the best solution at

    asked by Joycelyn