Questions Asked on
June 12, 2010

  1. Physics

    A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the drive steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. a) What is the magnitude of the force of the car on the truck? b) what is the

    asked by Sarah
  2. chemistry

    write the overall, balanced molecular equation and indicate which element is oxidized and which id reduced for the following reactions. Include phase abbreviations. a) Mg(s)+Cr(C2H3O2)3(aq)--->? b) Cd(s)+AgNO3(ag)---->?

    asked by amanda
  3. Chemistry

    When heated, lithium reacts with nitrogen to form lithium nitride: 6Li+N2 --> 2Li3N What is the theoretical yield of Li3N in grams when 12.4 g of Li is heated with 33.9g of N2

    asked by Jerry
  4. chemestry

    suppose two gases in a container have a total pressure of 1.20 atm.What is the pressure of gas B if the partical pressure of gas Ais 0.75 atm?

    asked by denise
  5. Chemistry

    What volume of 0.123 M AgNO3(aq) is needed to form 0.657 g of AgCl(s)? 0.564 mL. 18.6 mL. 37.2 mL. 1.77 L.

    asked by Kelly
  6. Geometry Check

    Which set of points are collinear? a.)A(-1,5); B(2,6); C(4,7) b.)A(0,0); B(1/2,3); C(1,5) c.)A(-4,-2); B(0,-4); C(2,-5) when i graph them they all look straight to me but the one I pick is A(-1,5); B(2,6); C(4,7)

    asked by Ariel
  7. Geometry HELP

    Which set of points are collinear? a.)A(-1,5); B(2,6); C(4,7) b.)A(0,0); B(1/2,3); C(1,5) c.)A(-4,-2); B(0,-4); C(2,-5)

    asked by Ariel
  8. physics

    If the borderline is tau equals zero,the eigen values are?

    asked by Alan Zamora
  9. Algebra

    2. A long distance phone company has a monthly fee of $7.95 and charges a rate of $0.05 per minute. Another long distance company has a monthly fee of $9.95 and charges a rate of $0.03 per minute. At how many minutes would the two companies have equal

    asked by mysterychicken
  10. math

    if naomi wants to accumulate 1,000,000 by investing money every year into her savings account at 3% for 30 years until retirement,how much does she need to deposit each year

    asked by darryl
  11. electric chem

    A voltaic cell is made by placing an iron electrode in a compartment in which the Fe2+ concentration is 2.0 ´ 10-5 M and by placing a Pt electrode in the other compartment, in which the H+ concentration is 3.4 M and = 1.00 atm.

    asked by ibbi
  12. english parts of speech

    choose the sentence that has a subject complement a. the nurse felt my pulse b. i felt much better c. the day ended with many surprises d. we can't leave without seeing her

    asked by brenda
  13. calculus

    Let g(x)=|cos x-1|. The maximum value attained by g on the closed interval [0, 2pi] is for x equal to A) -1 B) 0 C) pi/2 D) 2 E) pi I think its pi/2 but I'm not sure at all.

    asked by =)
  14. College Physics

    A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 6.3 m/s2; after 3.6 s he enters the main speedway. At the same instant, another car on the speedway and

    asked by Anonymous
  15. chemistry

    A flask containing 5.00mL of 3 M HCl solution requires 14.45mL of 1.00 M NaOH for titration. How many moles of HCl are present in the solution? The density of 3 M HCl is 1.05g/mL

    asked by John
  16. physics

    A small toy car is moving around a circular path once in every 8 sec. The radius of track is 3m. find speed of car.

    asked by Anonymous
  17. Algebra

    Need help with these please--- 2. A long distance phone company has a monthly fee of $7.95 and charges a rate of $0.05 per minute. Another long distance company has a monthly fee of $9.95 and charges a rate of $0.03 per minute. At how many minutes would

    asked by mysterychicken
  18. French

    I'm in grade 9, and my oral exam is coming up on monday. One of the possible questions involves knowing the plot of the textbook 'Sans frontieres 9e' that I had to return already. Specifically 'Selon toi, qui a commis le crime a\Logi-clique? Pourquoi?'

    asked by Matthew
  19. Chemistry

    How much energy (in kilojoules) is released when 26.5g of ethanol vapor at 86.0C is cooled to -12.0C? Ethanol has mp = -114.5C , bp = 78.4C, delta H vap = 38.56 (KJ/mol) and delta H fus = 4.60 (KJ/mol) . The molar heat capacity is 113J/(K.mol) for the

    asked by Deborah
  20. Geometry HELP

    1.)In the figure above, PQRS is an inscribed quadrilateral, and the measure of arc RSP=206º. What is m∠PST? a.)103º b.)206º c.)360º

    asked by Ariel
  21. Algebra

    Solve. The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke^0.12t where k is a constant and t is the time in years. If the current population is 15,000, in how many years is the

    asked by Sam-bo.
  22. chemistry

    Write an equilibrium constant expression for the chemical reaction of ammonia with water. (In this reaction assume that the concentration of water will remain constant)

    asked by Locke
  23. Physics

    What is the tension in the rope of this figure description? 60 kg person is hanging in the air on a rope attached to a pulley, with a 100 kg mass attached on other end that is touching the ground.

    asked by Sarah
  24. Art and Culture: Hellensitic Greece

    What is the purpose of the Altar of Zeus in Pergamum? Who is responsible for paying for or commissioning the piece? How was it made? What is the meaning of this piece and what does it express or reveal about its creator? What aspects of the Hellenistic

    asked by Hannah
  25. geometry

    In triangle abc, point B is on segment ab, and point E is on segment bc such that segment de is parallel to segment ac if db=2, da=7, de=3, what is the length of segment ac?

    asked by jenny
  26. chemistry

    This is a confusing one! How many faradays are required to convert a mole of NO2- ions to NH4+ ions? a. 4 b. 5 c. 6 d. 7 e. 8

    asked by ill matic
  27. Business research

    You conduct a survey of a sample of 25 members of this year�s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this

    asked by Shari
  28. chemistry

    an organic sbstance has an enthalpy of vaporization of 29.0 kl/mol. the compound has a vapor pressure of524 mm HG at 25 C. at what tempurture is the vapor pressure equal to 115mm HG?

    asked by nancy
  29. chemistry

    Data obtained from lab (neutralization): H2SO4: C =1.0mol/l V = 30 mL Initial temp. = 24.1 NaOH c= 1.0mol/L v= 50 mL initial temp. = 23.9 Final temp. of H2SO4 & NaOH = 32.9 Assume specific heat capacity of both these substance is equal to water's = 4.19

    asked by Jenna
  30. Math

    A television manufacturer makes console and wide-screen televisions. The profit per unit is $125 for the console televisions and $200 for the wide-screen televisions. Write the objective function that describes the total monthly profit. Write a system of

    asked by Bob
  31. English

    How do i write a thesis statement about greed for the novel The Lion, The Witch and The Wardrobe?

    asked by Cheryl
  32. Geometry Help

    1.) An isosceles triangle ΔABC has its altitude at the y-axis and its base at the x-axis. D is the midpoint of segment AC and E is the midpoint of segment CB. Given the coordinates A(-2a, 0), B(2a, 0), and C(0, 2b), determine the coordinates of

    asked by Ariel
  33. CIS 105

    As you have discovered, there are a variety of computers available, from the smallest computer in a domestic device to the supercomputers used in industry. Despite the different uses of computers, they all have basics elements in common—each computer

    asked by Sunny
  34. Physics

    Two blocks of masses M and 5M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them, as seen in the figure below:

    asked by Brian
  35. Medical Terminology

    You are a front office medical assistant. A second front office medical assistant is going to be hired, and you have been asked by the office manager to help her screen job applicants for the position. The office manager asks you to put together a short

    asked by Danielle
  36. statistics

    A canidatate for governor of a certain state claims to be favored by at least half of the voters. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis? A. There is not sufficient evidence to reject the

    asked by Steven
  37. Chemistry

    The [H3O+] of a solution with pH = 3 is -10 M. 10 M. 1 x 10-3 M. 1 x 103 M. 1 x 10-11 M. Identify the acid(s) and base(s) in the following reaction: CH3COOH(aq) + NH3(aq) CH 3COO-(aq) + NH4+(aq) CH3COOH is the only acid, and NH3 is the only base. CH3COOH

    asked by amanda
  38. chemistry

    A sample of argon gas occupies a volume of 950 mL at 25.0°C. What volume will the gas occupy at 50.0°C if the pressure remains constant?

    asked by lara
  39. Algebra

    Need help with these--- 30. Suppose the area of a square is x^2 - 6x + 9. What is the perimeter of the square? 33. Factor the expression: k^2 + k^f - 2f^2 38. Find the final amount of an investment if $2,000 is invested at an interest rate of 8% compounded

    asked by mysterychicken
  40. Algebra

    Solve. How long will it take for the population of a certain country to double if its annual growth rate is 1.5%? Round to the nearest year. Use the exponential growth model P(t) = P0e^kt.

    asked by Patty T.
  41. managerial accounting

    Accounting homework Gladmark company produces two types of get well cards scented and regular drivers for the four activities as follows: Scented Regular Inspection hours 40 160 Set up hours 50 50 Machine hours 200 600 Number of moves 225 75 1. Calculate

    asked by Cris
  42. chemistry

    A beaker contains 50.0 mL pf 0.953 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?

    asked by Monica
  43. Chemistry

    A beaker contains 50.0 mL of 0.952 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?

    asked by Monica
  44. Business Statistics HELP!!!!

    According to the National Association of Homebuilders, the average life expectancies of a dishwasher and a garbage disposal are about the same:10 years. Assume that their finding was basedon a sample of n1=60 dishwashers and n2 = 40 garbage disposals, and

    asked by Julia Brown
  45. algebra

    The length of a rectangle is 1 cm longer than its width. If the diagonal of the rectangle is 5 cm, what are the dimensions of the rectangle in centimeters? Enter your answers in the blanks. Enter only the numeric values rounded to the nearest tenth.

    asked by Anonymous
  46. Geometry Help

    Out of 60 review questions I struggled with these ones. Someone please help!! 1.) The length of one side of a regular polygon is half the length of a similar polygon. What is the ratio of their areas? a.)1/2 b.)1/4 c.)1 2.)A patchwork quilt is made up of

    asked by Ariel
  47. Math

    function y = 4-2(2t+pi/2), where t is measured in radians. A.choose one option which gives the value of the function when t=pi radians B.choose one option which gives the period of the function in radians. a)0 b)1 c)2 d)4 e)pi/4 f)pi/2 g)pi h)2pi

    asked by Dave
  48. Math

    Choose the three true statements from the following. Options A) The period of y =cosx is 90◦. B) The period of y =sinx is ð radians. C) The period of y =sin(2x) is four times the period of y =sinx. D) The period of y =sin(2x) is half of the period of y

    asked by Smith Rai
  49. science

    4. Assignment: Photosynthesis and Cellular Respiration Powerpoint Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multicellular, the exchange of energy and the formation of products

    asked by barb
  50. accounting

    I need help wit Acc/225 week 2 and the exercise is 2-5 I have to do a T-account and Trial balance for Pose Pics and it is really confusing me

    asked by Cheri
  51. Geometry HELP

    A soccer ball has diameter of 400 mm. A pin is stuck into the ball such that it creates the chord AC, which is 20 mm. What is the distance from the chord formed by the pin, and what is the length of EB? (Hint: CD=radius) a.)0.125 mm b.)0.5 mm c.)0.25 mm

    asked by Ariel
  52. Physics

    The velocity of an object in simple harmonic motion is given by v(t)= -(0.275 m/s)sin(23.0t + 2.00π), where t is in seconds. 1) What is the first time after t=0.00 s at which the velocity is -0.100 m/s? 2) What is the object's position at that time? I

    asked by Brian
  53. Algebra

    Please help...Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. y=log7 x

    asked by J. Ed
  54. Algebra

    Is this correct? Rewrite as an equivalent exponential equation. Do not solve. log[8](64)=2 Answer= 8^2=64

    asked by Amy Zieg
  55. English 10 HELP

    out of 50 review questions I'm struggling with these. Someone please check/correct my answers! Look at the following pairs of sentences. Identify whether or not they are simple time relationships or cause-and-effect relationships. 1.)Clark was hammering a

    asked by Ariel
  56. psy 230

    what influence does culture have on personality?

    asked by lisa smith
  57. writing

    i need some help with editing

    asked by Jasmine
  58. algebra

    how do you solve 3x-y=5 and =6x+2y=1 by substitution

    asked by Anonymous
  59. chemistry

    what is the basicity of H2S03

    asked by ayo
  60. Sci

    I want to do a science project like i am going to show two different ecosystem and predict and show which one is more polluted and what happens during global warming???? What my hypothesis going to be then??? Also.... What Future Refrences do I need To Get

    asked by Alisha
  61. Math

    Using 3.14 for pi, rounding to the nearest tenth, if necessary. A spherical storage tank has a diameter of 48 ft and is full of water. How many delivery trucks with cylindrical tanks measuring 8 ft in diameter and 10 ft long can be completly filled from

    asked by Bob
  62. Math

    Choose the four true statements from the following. Options for Question 5 A )Two boxplots plotted ona commonaxis would be a good way of comparing the journey times for weekdays and weekends. B )Boxplots would show that the weekend times are more widely

    asked by Sutina
  63. Human Services

    This is late can somebody look at my answers and tell me if they are correct? I have to choose one of the following: A. bandwagon—the idea that “everybody” does this or believes this B. categorical statements—stating something in a way that implies

    asked by Ally
  64. Math

    Objective Function z = 3x - 2y Constraints x > or equal to 1 x < or equal to 5 y > or equal to 2 x - y > or equal to -2

    asked by Bob
  65. health

    when would a Midsagittal plane be used. i know it is, but what type of xray would be taken

    asked by Tonni
  66. English

    I have to have 5 sentences with different verb tenses, stating The role of education in successful finanical planning.

    asked by Christine
  67. Intro to Finance

    compare and contrast long- and short-term financing. Describe situations in which each type of financing would be used.

    asked by Kim
  68. more math

    1.) If c=12√3 cm, then a=___ and b=___. 2.) A refrigerator has a width of 3 feet. The angle of elevation from the bottom corner to the opposite corner is 65º. What is the height of the refrigerator? 3.) In a 30-60-90 triangle, the shorter leg has

    asked by Unknown
  69. Geo (locus)

    I don't fully get this stuff but some of these I guessed on and some I think I;m close so will someone check/ help me please? * is the answer I put 1. Point A is 0.5 cm from j. k and k are parallel and 1 cm apart. Find the locus of points that are 0.75 cm

    asked by matt
  70. Geometry HELP

    In a rhombus, one diagonal has a length of 10 cm and the area is 120 cm2. Find the length of one side. a.)10cm b.)12cm c.)13cm

    asked by Ariel
  71. Math

    : PROGRAM: PYTHAG : Prompt A, B :Fix 2 ã : (A2 +B2) ¨ C :Disp "C=",C : Float Choose the three true options concerning this program. Options A) The program can be used to find the length of the hypotenuse of a right-angled triangle. B) The program can

    asked by Dave
  72. Math

    Choose the one option which gives the length (in m, correct to 1 decimal place) of the diagonal of a rectangular field with sides 55m and 72m long. Options A 11.3 B 63.9 C 82.1 D 90.6 E 96.0 F 127.0

    asked by Smith Rai
  73. math

    x^4+2x^2y-x^2+3y^2

    asked by kamrul
  74. Latin

    When was "De rei publica" written? And what does each of the books describe?

    asked by Diane
  75. geometry

    . Graph the following functions. • y = 2x – 1 • y = (–3/4)x + 5 • y = x2 – 4 • y = –3x2 – 6x – 5

    asked by Anonymous
  76. statistics

    10 soldiers of 500 attempt to climb a 100Ft cliff, they fail in : 57 ft, 73, 81, 78,63,85,41,68,75,88. What is probability of soldiers successfully climbing the cliff?

    asked by david
  77. Maths

    Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5 - ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((-1)^(k+1)) / k I'd be able to figure out the term

    asked by Please Help
  78. algebra

    The equation C=mx+b can be used to model the monthly cost, C, of a cell phone plan where b is the flat monthly cost, m represents the cost in dollars per minute and x is the number of minutes used in the month. Choose a flat monthly rate and cost per

    asked by Please help
  79. Soccer

    Yeeeeeha! The US tied Great Britian!!!! And that's the answer!

    asked by GuruBlue
  80. Grade 8 Vocab

    I am having a vocab quiz soon and I need to know the meaning of the following! Thanks for all the help! - poignant - adversity - quaver - wanton - cacophony - narcissism PS: Please don't give me the link to dictionary sites, I've already tried that and I

    asked by Maddison
  81. Algebra

    Is this answer correct? Express as a single logarithm: log[2](6)+log[2](13) Answer= log[2](78)

    asked by Amy Zieg
  82. math

    A tractor manufacturing company machines axles to extremely small tolerances. The main power axles have a mean diameter of 3.0000 inches and a standard deviation of 0.0050 inch. What is the probability that a given axle will have a diameter between 2.9915

    asked by Wendy
  83. math

    Suppose that the U.S. Senate consisted of 60 Republican and 40 Democratic senators. How many different 10-person committees could be formed with 6 Republican senators and 4 Democratic senators?.

    asked by Wendy
  84. Algebra

    Is this correct? Express as a single logarithm. log[x](14)-log[x](2) Answer= log[x](12)

    asked by Amy Zieg
  85. CUltural Diversity

    Native Americans who are employed are less likely to be managers, professionals, technicians, salespeople or administrators. is this true or false?

    asked by Jamie
  86. Intermediate Algebra

    Express as an equivalent expression, using the individual logarithms of w, x, y, and z. log(a)(1x^2y^5)

    asked by Amanda
  87. Algebra

    20. Solve: 5x^2 - 10x = 0 50. (x-1)(x^3 + x^2 + x) =? Thanks -MC

    asked by mysterychicken
  88. geometry

    angle equals a half arc sine of gravity over velocity squared equals?

    asked by Alan Zamora
  89. Physics

    The hamiltonian shows you that the energy levels are purtered by the electric fields.The form of the matrix,you can see?

    asked by Alan Zamora
  90. PHY

    Steps of the scientific method

    asked by Anonymous
  91. albebra

    I do not understand how to find x on a graph when there is no equation. I have the possible answers: a) x= -3, b) x=-1, c) x=5, d) x=1 It asks me to find the value of x when y is 5; however, the graph I have has a line (0,2) on the y axis and on the x axis

    asked by bart
  92. Algebra

    50. (x-1)(x^3 + x^2 + x) =? Thanks -MC

    asked by mysterychicken
  93. gegraphy

    the native people originally come from? the name of the ethnic ground that settles in the praires? the porcess that formed the rocky mountains and appalachians? the most valuable catch in the pacific? the most eastern and western physiographic region? the

    asked by Ted
  94. Math

    I have no clue what this means. Can someone explain this to me. Evaluate t^1

    asked by Becky
  95. math

    1.) What is the square of √10? 2.) Find tan 14. 3.) Find cos 45. some one told me to use a scientific calculator and it would give me the answer but i can't find my calc.

    asked by Unknown
  96. Algebra HELP:(

    I do not understand how to find x on a graph when there is no equation. I have the possible answers: a) x= -3, b) x=-1, c) x=5, d) x=1 It asks me to find the value of x when y=5

    asked by bart
  97. English

    why did the Virginia Woolf had such a revolutionary impact on so many writers?

    asked by Isaiah
  98. Math

    What is the simplified sum when you evaluate 10/15 + 1/4

    asked by Nolan
  99. Math

    Calculate the average mathematical gradient of a slope that rises 450m over a horizontal distance of 1.8 km.

    asked by Sutina
  100. Geography

    Do you know an example where secondary effects of lithospheric hazards are more serious than the hazard itself?

    asked by Jazzie
  101. math

    1.) Write the equation for the line in slope-intercept form:Slope: m=3; Y-intercept: B=7 *y - 3 = 7(x - 3) *y = 3x + 7 *y = 7x - 3 2.)Write the equation for the line in slope-intercept form: Slope: m=4/3; Y-intercept: b=-2 *y = 4/3x - 2 *y + x = 2x + 1/2

    asked by matt
  102. chemistry

    What is the molecular mass of aspirin?

    asked by judith