1. chemistry

    A 0.25 mol/L solution of benzoic acid, KC7H5O2 and antiseptic also used as a food preservative, has a pH of 2.40. Calculate the Ka of benzoic acid at SATP

    asked by Geroge B. on April 5, 2008
  2. chemistry

    23.8 ml of a 2.0 mol/l surfuric acid solution reacted completely with 68.0 ml of potassium hydroxide. find the concentration of potassium hydroxide

    asked by walter on June 12, 2015
  3. Chem

    Solution of NaCl and glucose gives freezing point of -0.95%. It contains 150 mOsmol glucose/L. What is the concentration of NaCl in milliosmoles/L and molarity? Thank you.

    asked by Kane on May 19, 2014
  4. Chemistry

    Q49 One litre of solution contain 30g acetic acid the active mass of acetic acid is? Ans 1.0mol/L

    asked by Lara on September 30, 2018
  5. Chemistry

    acetic acid ionizes in water according to the following equation: CH3COOHH+ + CH3COO- if the solution is .766 M acetic acid, what is the concentration of H+?

    asked by Anonymous on February 28, 2011
  6. Chemistry

    Calculate the volume of concentrated reagent required to prepare the diluted solution 17 M H3PO4 to prepare 939 mL of 6.7 M H3PO4

    asked by X on November 22, 2014
  7. chemistry

    How ml silver nitrate solution (0.05 mol / l) K = 1.0000 consumed for titration of sodium chloride, 0.0500 g. MW Sodium chloride 58.44.

    asked by ULIA on March 25, 2014
  8. science

    The solubility of NaCl in water at 100 degrees celsius is 39.1 g/100 g water. Calculate the boiling point of this solution?

    asked by Frank on July 5, 2012
  9. Chemistry

    12.00 g of sugar is dissolved in some water in a cylinder of diameter 7.00 cm. To what height should the cylinder be filled (with more water) to produce a solution with concentration 11.00 g/dm^3?

    asked by Henry on January 20, 2011
  10. Chemistry

    What is the mole fraction sodium acetate of a solution made by adding 0.145 g of sodium acetate to 119 ml water?

    asked by Steve on November 2, 2012
  11. PCB

    A 298k the vapour pressure of water is 23.75mmhg.calculate the vapour pressure at same tempreature over 5% aqurous solution of urea?

    asked by Chavi on April 24, 2017
  12. Chemistry

    how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5 is this correct

    asked by Pierre on October 25, 2010
  13. chemistry

    Balance the following redox reaction occurring in acidic solution Cu(s) + NO3-(aq)--> Cu2+(aq) +NO2(g) This is what I have done so far Cu-->Cu2+ + 2e- 2H + NO-3 --> NO2 + H2O Need help please

    asked by Monique on November 20, 2011
  14. Chemistry

    Explain why the freezing point of a pure solvent is constant, whereas the freezing point of a solution decreases with steady cooling.

    asked by Cassie on March 20, 2011
  15. Chemistry

    Calculate the concentration (molarity) of copper(ii) sulfate, CuSO4, in 1L of solution containing 200g Copper-Sulfate-Penetahydrate(CuSO4x5H2O)?

    asked by Orangutan on August 15, 2017
  16. Chem

    The question is; About Fe+2 concentration will Fe(OH)2 precipitate from a buffer solution that has a PH = 9.29? The Ksp of Fe(OH)2 is 4.87x10^-17 So here is what I did, Ksp = (x) (2x)^2 = 4x^3 4.87x10^-17 = 4x^3 x = 2.30x10^-6 I don't know what do I have

    asked by Kim on October 26, 2010
  17. chemistry

    50.0 mL of an unknown HCl solution was titrated with 0.449 M NaOH. To reach the equivalence point, 38.4 mL of the NaOH was used. What was the concentration of the HCl?

    asked by james on March 25, 2015
  18. chemistry

    Suppose that a student calculated Kf of biphenyl to be 81.2C kg/mol. calculate the mass of an unknown if a solution containing 1.64 g of unknown in 18.22 g of biphenyl froze at 39.9 C

    asked by Artem on February 24, 2014
  19. chemsitry

    Calculate the mass in grams of sodium bromide, NaBr, are needed to prepare 250.0 mL of a solution of sodium bromide that is 3.50% (m/v).

    asked by allen on March 20, 2011
  20. Chemistry

    Which pair of compounds will form a solution? A) Benzene (C6H6) and Hexane (C6H14) B) Na2SO4 and Benzene C) NaCl and Hexane

    asked by Emily on April 20, 2012
  21. Chemistry

    Find the molarity of a sodium hydroxide solution obtained by dissolving 125.0 mg of sodium hydroxide in 50.ml volumetric flask.

    asked by Allison on March 10, 2015
  22. motion problem

    Ric can row upstream against a current at 6kph in 10 hrs while it will take him only 4 hrs going back. how far does he go upstream? (w/ solution pls... tnx)

    asked by MNHS MNHS on November 12, 2013
  23. Science

    An aqueous solution of calcium chloride boils at 101.3. How many kilograms of calcium chloride were dissolved in 1000 g of the solvent?

    asked by Nita on January 25, 2012
  24. Chemistry

    Calculate hydroxyl ion concentration, ph and the percent hydrolysis for 0.1M solution of sodium cyanide (hints know for cyanide ion is 2.5*10^-5).

    asked by Wendy on August 13, 2018
  25. A.P. Environmental Sciences

    .5 grams of pure copper sulfate powder and 2L of water were used to create a copper sulfate solution with a concentration .5ppm. How was this done?

    asked by Michelle on October 10, 2012
  26. chemistry

    15029 What is the hydronium ion (aka H+) concentration for a solution that is 2.50 x 10-4M in hydroxide. what do i do here? The product of hydroxide and hydronium is a constant, at 25C, it is 1*10^-7

    asked by sam on May 1, 2007
  27. MATH

    If 20% of population have blue eyes, and 5 people are selected at random, what is the probability that at least 4 of them have blue eyes? HOW DO I FIND THE SOLUTION TO THIS PROBLEM?

    asked by STEPHANIE on March 25, 2011
  28. Science

    What is the mass percent of sodium hydroxide in a solution that is made by dissolving 8grams of sodium hydroxide in 50 grams of H2O?

    asked by Araceli on July 7, 2014
  29. Math

    A rotating videocamera in the parking garage goes through 4 complete rotations in 3/4 hour. How many rotations will it make in 1 hour? Would this be a two part solution?

    asked by Anonymous on October 9, 2009
  30. chemistry

    For a particular redox reaction NO is oxidized to NO3^– and Cu^2+ is reduced to Cu. Complete and balance the equation for this reaction in basic solution: NO + Cu^2+ --> NO3^- + Cu^+ help. thanks.

    asked by dr. bob rocks on December 4, 2012
  31. chemistry

    Calculate the molarity of 12.5g of sucrose (C12H22O11) in 80mL of solution. 12.01 x 12 = 144.12 1.01 x 22 = 22.22 16.00 x 11 = 176.00 ------------------- 342.34 12.5g ----- / 342.34 = 0.003/80 = 4.56 80mL

    asked by kiki on October 25, 2016
  32. chemistry

    Balance the follwoing chemical reaction in an acidic solution __H2O(l) + __H^+(aq)+ OH^-(aq)+ __ CR2O7^2-(aq) + __ Cl^-(aq)---> __ Cr^3-+ __Cl2(aq)+ __H2O(l) + __H^+(aq) + __ OH^-(aq)

    asked by Amandeep on April 22, 2008
  33. Science

    Julie dissolved 20 g of sugar in a cup of water. The mass of the solution was 500 g. What volume of water did Julie start with?

    asked by Anonymous on February 3, 2016
  34. chemistry

    It requires 23.2 mL of 0.250 M KOH to titrate 49.0 mL of an HCl solution of unknown concentration. Calculate the initial HCl concentration.

    asked by amber on March 18, 2014
  35. science

    freezing point of pure solvent remains constant whereas the freezing point of a solution continues to decrease with time

    asked by areen on February 20, 2016
  36. Calculus

    For Questions 1–2, use the differential equation given by dy/dx = xy/3, y > 0. 1. Complete the table of values x -1 -1 -1 0 0 0 1 1 1 y 1 2 3 1 2 3 1 2 3 dy/dx 2. Find the particular solution y = f(x) to the given differential equation with the initial

    asked by William on May 7, 2018
  37. Chemistry

    For propanoic acid HC3H5O2, Ka = 1.3 ✕ 10−5 and 0.102 M solution. [HC3H5O2] ____M [C3H5O2− ] ____M percent dissociation ____percent

    asked by chem_student on March 3, 2019
  38. AP Chemistry

    redox reaction: Hydrogen peroxide is added to an acidified solution of potassium permanganate. what is the total redox reaction?

    asked by Gabriella on September 23, 2013
  39. Biochemistry

    Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution. Indicate the volume of hypochlorous acid and sodium hydroxide to use.

    asked by Jen on March 13, 2013
  40. maths

    For what natural number of x and y the equation 2x+5y-7=0 has unique solutions? If the values are taken from collection of real numbers do you think the equation has unique solution

    asked by usha on October 26, 2015
  41. chemistry

    What volume of a 0.550 M solution of potassium hydroxide can be made with 18.3 g of potassium hydroxide? (Ignore significant figures for this problem.)

    asked by Andy on September 28, 2014
  42. is this correct?- math

    find the domain of the real valued function; f(x) = sqrt(5 - (sqrtx)) my solution: 5 - (sqrt x) >=0 -(sqrt x) >= -5 (sqrt x)

    asked by HARRY on February 12, 2012
  43. chemistry

    One teaspoon of instant coffee ( 3 grams ) is dissolved in 250 grams of water. What percent of the resulting solution is coffee ?

    asked by Anonymous on November 20, 2014
  44. chemistry

    What is the pH of a sodium acetate solution prepared by adding 0.820g of sodium acetate to 100.0mL of water at 25 degrees?

    asked by Natalie on March 29, 2011
  45. chemistry

    How many grams of sodium hydroxide (NaOH) are needed to prepare 250 mL of a 0.20 M (mol/dm3) sodium hydroxide solution?

    asked by pippiserra on May 5, 2014
  46. ap chem

    Calculate the percent ionization of a 0.76 molar solution of acetic acid. The ioniza- tion constant of acetic acid is 1.8 × 10−5.

    asked by Anonymous on February 14, 2011
  47. Physics

    Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 57.4 m of copper pipe whose inside radius is 7.52 x 10- 3 m. When the water

    asked by Noodle man on April 26, 2016
  48. Physics

    Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 74 m of copper pipe whose inside radius is 9.10 10-3 m. When the water and

    asked by Jenny on April 5, 2008
  49. chemistry

    at an equilibrium mixture of PCl5, PCl3, and Cl2 has partial pressures of 217.0 Torr, 13.2 Torr and 13.2 Torr respectively. a quantity of Cl2 is injected into the mixture, and the total pressure jumps to 263.0 Torr (at the moment of mixing). the system

    asked by lasya on February 26, 2014
  50. science. mrs.sue please help

    14. the sun's layer is called the photosphere . ( 1point) A. true b. false 15. meteoroids can form when comets break apart , creating dust clouds . ( 1point ) A. true b. false 16. a star is born whenever a nebula expands . ( 1point ) A. true b. false 17. a

    asked by Hannah on March 12, 2015
  51. chemistry

    at an equilibrium mixture of PCl5, PCl3, and Cl2 has partial pressures of 217.0 Torr, 13.2 Torr and 13.2 Torr respectively. a quantity of Cl2 is injected into the mixture, and the total pressure jumps to 263.0 Torr (at the moment of mixing). the system

    asked by lasya on February 25, 2014
  52. science

    14. the sun's layer is called the photosphere . ( 1point) A. true b. false 15. meteoroids can form when comets break apart , creating dust clouds . ( 1point ) A. true b. false 16. a star is born whenever a nebula expands . ( 1point ) A. true b. false 17. a

    asked by Help me,plz on March 13, 2015
  53. Physics

    A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 1.80 s, the cat's velocity is (3.60 m/s)i + (2.00 m/s)j , measured on a horizontal xy coordinate system. At t2 = 5.70 s, its velocity is (-3.60 m/s)i + (-2.00)j . What are (a)

    asked by leo on February 23, 2011
  54. Physics

    A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is (3.00 m/s) + (2.70 m/s) , measured on a horizontal xy coordinate system. At t2 = 5.90 s, its velocity is (-3.00 m/s) + (-2.70) . What are (a) the

    asked by Antonio on September 13, 2010
  55. science

    an aluminium container of mass 100g contains 200 g of ice at -20'c heat is added to the system at the rate of 100 cal/sec. what will be the final tmperature of the mixture after 4 min? given:specific heat of ice:0.5 cal/gm'c ,latent heat of fusion:80

    asked by anu on March 17, 2011
  56. physics

    A monochromatic light illuminates a double slits system with a slit separation, d =0.3 mm. The maximum of the first order occurs at y = 4.0 mm on a screen placed at 1.0 m from the slits. Find the: a)Wavelength b)Distance between the central maximum and the

    asked by aiman on August 15, 2015
  57. Life orientation

    1. Distinguishe between interpersonal and intrapersonal conflict 2.4 symptoms of intrapersonal conflict 3. Show Link between intrapersonal conflict and initialing relationship

    asked by Smangele Msweli on February 26, 2019
  58. Government

    Suppose major officeholders from one particular party are not performing well, and this party is not monitoring these officeholders. In what ways could this situation affect the party as a whole? In the United States, the popularity of the poorly

    asked by Nichole on May 13, 2007
  59. us history

    agree or disagree? During the 1920 stock amrket crash, tbankers invested their depositors money in unsound investments. Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and

    asked by jessica on March 22, 2007
  60. english

    fill in the blanks 1 Mary always her work carefully.(do) 2 my father to America next week. (fly) 3 what did you yesterday.(do) 4 my grandmother never up late.(wake) 5 you shouldn't on the wall.(write) 6 we to learn to swim last year.(begin) 7 the

    asked by ashel on September 13, 2014
  61. business

    Out of the types of businesses (sole proprietorship, partnership, and corporation), which has the easiest time obtaining money to expand their business. Why? Please note that we don't do students' homework for them. Once you have come up with a response to

    asked by Anonymous on October 12, 2006
  62. English

    I need help writing a lead sentence, it has to answer the who, what, why, when and how The Director of Budget and Accounting, Patsy Moore, shared a presentation about the 2013 Capital Improvement Plan on Monday during the City Commission Meeting in

    asked by Blaze on January 23, 2013
  63. science`

    When doing an experiment, it is important to follow all of the procedures EXCEPT ______________. Question 1 options: wearing protective goggles arranging and organizing the work space neatly understanding the meaning of the safety precautions using smaller

    asked by sciene lab safety on August 21, 2015
  64. To Sara

    I've banned you from posting on Jiska for a day or two to give other teachers a chance to respond to your questions. You can also use this time to work independently to polish your answers. By the way, it's considered rude and like shouting to use all

    asked by Ms. Sue on November 9, 2009
  65. 1 Geom. question

    I don't want the answer I just need to know how to work the problem.. i cant figure it out. Please help! What are the values of a and b? C:\Users\Emily Shae\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\DLWQEEA2\paint[2].jpg

    asked by Sarra on February 2, 2012
  66. Geology

    How do i work out skewness and sorting Thank you for using the Jiskha Homework Help Forum. Hopefully the following sites will help you: faculty.uml.edu/nelson_eby/89.215/Assignments/Sand%20Size%20Distributions.p...

    asked by Liam on February 12, 2007
  67. To Mara

    I have posted an answer for your question on acetone and ethanol (equimolar solutions) to equal 1000 mL. It's back on page 3 at the time I write this. Post your work if you get stuck and I suggest you repost at the top of the board. We will find it easier

    asked by DrBob222 on October 25, 2016
  68. Social Studies

    The Qing Dynasty produced and exchanged items such as Chinese pottery with English colonists during the 1800s in order to obtain heavily demanded what? a. silks. b. cotton. c. furs.*** d. tea. Just checking my work:) *** - My Answer Thanks, Kaai97

    asked by Kaai97 on October 27, 2015
  69. Chemistry

    How do you work this one problem? Metal Specific Heat (J/g-C) Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe(s) 0.444 Hg(l) 0.139 H2O(l) 4.184 C2H5OH(l) 2.46 Using the above table, determine the final temperature if 713.6J is released from a 48.2g sample of

    asked by christine on October 24, 2010
  70. stats

    in a sample of 159,949 first year college students, the national survey of student engagement reported that 39% participated in community service or volunteer work.find the margin of error for 99% confidence. ...idk what formula to use.

    asked by sara on December 5, 2013
  71. English

    Which of the following includes an error in subject-verb agreement? A.Carrie and Lucille work in the cafeteria. B. Either June or his children are going to the movie tonight. C.Neither Hannibal nor her pups is in the kitchen. D.Laverne,who's married,and

    asked by AK on July 9, 2008
  72. physics

    a cylinder with movable piston contains 40 moles of an ideal gas it is placed in an ice water bath where it reach thermal equilibrium. it is then compressed slowly with 7500 j of work done to compress it to a smaller volume. how much does its internal

    asked by Mohanad on April 23, 2014
  73. ELA

    Determine the ideas that would be most worthy to share in a literary discussion about The Watsons Go to Birmingham-1963. Provide an explanation for your choices. How did the role you selected and the work you completed help you to understand more about the

    asked by Peyton on December 11, 2015
  74. pre-calculus

    given x = 1,110 degrees Find sinx, cosx, tanx, cotx, secx, cscx, without using a calculator. Each result should be a fraction. No decimals involved... I don't even know where to begin, i missed a class, so please explain the work fully, Thanks kenny

    asked by kenny on July 31, 2009
  75. chemistry

    A strip of aluminium of mass 40.7g is dropped into a beaker of dilute hydrochloric acid. Calculate the work done (in J) on the surrounding atmosphere (1atm pressure, 26.1oC ) by the evolution of hydrogen in the subsequent reaction. State any assumptions

    asked by sand on January 11, 2012
  76. Physics

    On your first day at work for an appliance manufacturer, you are told to figure out what to do to the period of rotation during a washer spin cycle to triple the centripetal acceleration. You impress your boss by answering immediately. Express in terms of

    asked by johnny on June 7, 2010
  77. music appreciation

    The overture for A Midsummer's Night Dream is a one-movement work ________? a.in sonata form . b. famous for interplay of piano,violin and cello. c.known for massive sound of the orchestra. d. that presents the same musical idea in each strophe of the

    asked by me on March 18, 2011
  78. Creative Writing

    I am working on an oral presentation on Dorothy Parker for my creative writing class. I am required to focus on her non-fiction work. I have researched her endlessly and have come up with nothing. Everything that I am finding concerns her poems and short

    asked by Einstein on November 24, 2008
  79. College Physics

    When searching for gold, measurements of g can be used find regions within the Earth where the density is larger than that of normal soil. Such measurements can also be used to find regions in which the density of the Earth is smaller than normal soil;

    asked by Please Help!!! on September 21, 2011
  80. chemistry HELP

    Use the following information to identify element A and compound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a

    asked by sonya on October 29, 2006
  81. accounting

    This year , Kirby company sold 35,000 units of production at $16 per unit. Maunfactoring and selling the product required $120,000 of mixed manufacturing costs and $180,000 of fixed selling and administrative expenses. This years variable costs and

    asked by damara on August 22, 2007
  82. Finance/Cost accounting

    The XYZ Corporation is contemplating the introduction of a new machine tool which will be used solely in the manufacture of a rotor shaft. 50,000 units per year are expected to be manufactured, and the time study group anticpates a standard of 2.5 hours

    asked by Cheryl on April 1, 2011
  83. Physics

    A 300L water tank is 2.8m above the ground and constantly refills itself to always have 300L present. A pipe with a diameter of 12.5mm runs from it to the shower. Due to gravity, work out how many litres per minute are produced?

    asked by Em on February 5, 2012
  84. literature

    You can often use literature in math, science and social studies to: A. entertain kids who finish their work. B. keep students quiet after a test. C. broaden the study of a topic. D. encourage kids to read nonfiction C ?

    asked by bev on November 27, 2015
  85. math

    Jethro is an employee at the New Capitol T -Shirt shop makes $16.00 per hour, measured in quarter hours. If he begins work at 9.30 AM, what time it will be when Jethro has earned $100.00 ? ( can you please write the steps. thankyou )

    asked by thommini on September 17, 2010
  86. business

    Theory Y manageers tend to believe that: a. most people like work: it is as natural as play or rest. b. the average worker want security. c. a primary motivator is money d. the manager must be highly involved, telling people what to do and how to do it.

    asked by cindy on July 6, 2012
  87. Physics

    An 85.7N box of clothes is pulled 26.2m up a 31.7 degree ramp by a force of 112N that points along the ramp. The acceleration of gravity is 9.81 m/s^2 How high does it rise above the point of release? What i got as the equation is Einitial +- work = Efinal

    asked by Simone on December 11, 2014
  88. Physics

    this question came up in my work, and i don't remember reading about it in my book. can you tell me what it is asking for, and how to do it.. if the change in position delta x is related to velocity v(with units of m/s) in the equation delta x=Av, the

    asked by y912f on January 31, 2009
  89. trigonometry

    A sheet metal worker constructed a triangular metal flashing with sides of 6 ft., 5 ft., and 3 ft. If he charges $2 per square foot for this type of work, then what should he charge? Do not use Heron’s formula. Justify and explain your reasoning.

    asked by Britt on December 20, 2011
  90. Engineering Kinematic

    The particle travels along the path defined by the parabola y=0.5(x^2). If the component of velocity along the x-axis is v=5t [m/s], determine the particle's distance from the origin and the magnitude of its acceleration when t=1s. The initial condition is

    asked by Claire on October 16, 2010
  91. earth's systems

    What are the four earth systems? and how do they interact with eachother? Lithosphere, Biosphere, Atmosphere, and Hydrosphere. They operate in an integrated fashion. I recommend you cite some specific interactions. all of the systems work together by air

    asked by Gemma on April 10, 2007
  92. Project work

    Hi, I have a project work on:" Investigating the importance of dating among adolescents." Can u plz help me out. Thx :-) These sites should get you started on your project. (Broken Link Removed) http://www.questia.com/PM.qst?a=o&d=5001778104

    asked by Ishani on March 21, 2007
  93. Physics

    An 85.7N box of clothes is pulled 26.2m up a 31.7 degree ramp by a force of 112N that points along the ramp. The acceleration of gravity is 9.81 m/s^2 How high does it rise above the point of release? What i got as the equation is Einitial +- work = Efinal

    asked by Simone on December 10, 2014
  94. physics

    In the 1950’s, an experimental train that had a mass of 36700 kg was powered across a level track by a jet engine that produced a thrust of 4.67×10^5 N for a distance of 528 m. Find the work done on the train. Answer in units of J.

    asked by allan on January 14, 2015
  95. Alg 1

    An area rug is shaped like a golden rectangle. Its length is 8 ft. What is the rug's width? Write your answer in simplified radical form and rounded to the nearest tenth of a foot. Please explain how to work this. Thanks.

    asked by Jane on April 2, 2013
  96. math

    the supervisor i'll give you a penny taday and double your pay every day for 30 days if you work for me. use a table to slove this problem what balance after 30 days? what is the interest rate and number of periods for this? what is a equstion for this

    asked by jojo on December 3, 2012
  97. Physics

    body of mass 0.3 kg is taken up a client Plains of length and height 5 metres and then allowed to slide down to the bottom again the coefficient of friction between the body and the plane is 0.15 what is the work done by gravitational force over round

    asked by Pushpinder Singh on August 11, 2015
  98. math

    Andes wants to collect data about the preferences of the people who work for him. He wants to pick every fourth person in a list of all employees. Which of the following is the best way to organize the list? Age,pay rats,last name or date of hire? Is the

    asked by Big O on January 21, 2015
  99. Physics

    Hello, I have e problems with dis question A harmonic wave on a string moves along the x-axis according to: (x,t) =5.0 (cm) sin[ (2.5m^-1) x - (63s^-1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscilations on the string is closest to ... me thought

    asked by Me on January 26, 2011
  100. marketing

    The company you work for is considering changing its applicant testing process. Your supervisor has asked you to research testing methods and make your recommendation. This proposal will be submitted to the Vice President for review and consideration.

    asked by Anonymous on October 16, 2010

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