Questions Asked on
June 11, 2011

  1. 12th physics

    for what angle of incidence the lateral shift produced by parallel sided glass plate is (i) zero (ii) maximum

    asked by Arya
  2. Life orientation

    1. Identify environmental or human factor that causes ill health,accidents,crises,& disasters within communities. 2. Discuss ways in which the human or environmental problem impacts on the community

    asked by Esther
  3. econ.

    2. A company is considering building a bridge across a river. The bridge would cost $2 million to build and nothing to maintain. The following table shows the company¡¯s anticipated demand over the lifetime of the bridge: Price per crossing ($) 8 7 6 5 4

    asked by fred
  4. physics

    A go-cart has an initial speed of 23.4 m/sec. Fifteen seconds later the go-cart has a final speed of 36.8 m/sec. What is the magnitude of the go-cart's displacement?

    asked by Kate
  5. Chemistry

    Which of the following bonding patterns DOES NOT happen? C-H-C =C= H-H All of these bonding patterns can happen.

    asked by Amara
  6. chemistry

    What kind of reaction occurs when a molecule of glucose reacts with oxygen to give carbon dioxide and water? a.exothermic reaction b.endothermic reaction c.synthesis reaction d.irreversible reaction

    asked by nina
  7. chemistry

    The enthalpy of combustion of carbon to carbon dioxide is -394 kJ according to the equation: C (s) + O2 (g) --> CO2 (g) How many kJ of heat are released when 24.0 g of carbon are burned in an excess of oxygen

    asked by lo
  8. psychology

    write on the topic Acquire Immuno-Deficiency syndrome (AIDS)and submit a 3-5 page typed,APA style paper.Title and reference pages are separate.The paper must include the folloing information:description of the condition/syndrome,onset and contributing

    asked by tonia
  9. chemistry

    When water is cooled to a temperature x , it gets converted into ice at temperature x by a process called p. And when ice at temperature x is warmed, it gets converted into water at the same temperature x in a process called Q a) what is the value of

    asked by rahul
  10. English

    Seven letter word , second letter an a , fourth letter an e, and sixth letter an u, what is this word?

    asked by Afifa
  11. chemistry

    The heat energy needed to raise the temperature of 10.0 g of metal by 10.0°C would exceed 25 calories for which metals on the periodic table?

    asked by Sarah
  12. Algebra

    The formula T=2π√L/480 can be used to find the period (T in seconds, the time it takes a pendulum to complete one cycle) of a pendulum that is L cm long. (a)Rewrite this formula using rational exponents. Don't forget to rationalize the denominator.

    asked by Melvin
  13. chemistry

    what is the temprature at which molecular motion ceases??

    asked by urja
  14. history-Civil War

    Sorry Sra...your sites didn't help..i was in sooo many sites last two days...no discussion found on this question..you don't know the answer to this ?

    asked by Joanne
  15. statistics

    A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a

    asked by Anonymous
  16. Physics

    In the photoelectric effect, what happens to the stopping voltage when the light frequency is decreased?

    asked by John
  17. Math

    How do you factor: 9x^2y^3 - 3x^3y^2 - 15xy i got: 3xy(3xy^2 - x^2y - 5) But how do you factor it further to simplify it? Thx

    asked by Happy Face
  18. history

    The earilest evidence for the demestication of the horse is found in present-day? A. Serbia B.Malta C.Ukraine D.bulgaria

    asked by tomtom
  19. derivative

    41) Find the derivative. h(x)= (3x^2 + 1)^3 / (x^2 - 1)^4 This is where I am at the moment.... h'(x)= (x^2-1)^4 (3)(3x^2+1)^2(6x) - (3x^2+1)^3(4)(x^2-1)^3(2x) This is what I am trying to get....(not final answer) =2x(x^2-1)^3(3x^2+1)^2[(9)(x^2-1) -

    asked by Steff
  20. Nutrition

    Hello. I wanted to know what "strengthening a weakness" means? For example, let us say my weakness is high sugar foods. Would strengthening my weakness of high sugar foods mean that I should add healthy foods instead or does it mean that I should add more

    asked by Sarah
  21. physics

    A hockey puck of mass 0.450 kg is sliding across the ice. However, because of the frictional force between the puck and the ice, the motion of the puck is stopped in 15.8 seconds. Determine the magnitude of the frictional force.

    asked by Dale
  22. physics

    An electric motor is tested and found 76% efficient. if the input work is 400 J, what is the motors output work?

    asked by han
  23. mathematics

    find the smallest and largest values ​​of the function f(x)=(x+1)∛x² on the interval [-4/5;3]

    asked by lisa
  24. physics

    An electron travels 1.91 m in 4.72x10^-8s. How fast does it travel? Answer in cm/s

    asked by ashley
  25. Business Math

    Answer the questions below in 2 paragraphs 1. Discuss your options for obtaining a home loan and how mortgages work. 2. Discuss the process/procedures for obtaining the loan and the ideal interest rates for home loans. Due ASAP!!!

    asked by Ms Jenny
  26. physics

    A 990 kg car is pulling a 300 kg trailer. Together, the car and trailer have an acceleration of 2.13 m/s2 in the forward direction. Neglecting frictional forces on the trailer, determine the following (including sign). (a) the net force on the car (b) the

    asked by Sarah
  27. biology

    name the gas transporting protein molecule present in the blood ? why this molecule is employed to transport oxygen but not carbondioxide.

    asked by priya
  28. History

    What do you think is the most significant thing to learn about the differences between social, political and economic systems in the world?

    asked by Kelly
  29. Physics 2

    Suppose, in the figure below, a 0.90-m rod experiences a 1.2-T magnetic field and the hand keeps it moving to the right at a constant speed of 3.5 m/s. If the current in the circuit is 0.040 A, what is the average power being delivered to the circuit by

    asked by June
  30. statistics

    A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a

    asked by Anonymous
  31. English

    Would Aunt Alexandra (To Kill a Mockingbird) tell Atticus he needs to choose between being a Finch and being one of them? Would Aunt Alexandra believe that because of the Tom Robinson case the Finches are being though of as badly as the Ewells?

    asked by Em
  32. algebra

    whats the fastest and most easiest way to find all the subsets in a given set?

    asked by Peter
  33. com 156

    I need someone to read over this and tell me if it sounds ok. It is supose to be a persuasive essay Why Americans should not count on Social Security for retirement. Even though Social Security may always have enough funds to support itself, Americans need

    asked by Debbie
  34. Soviet Union-US-Cold War

    What's the significance of the relationships of the Soviet Union and the United States to developing countries during the Cold War. How do you think it relates to conditions today?

    asked by KELL
  35. Economics

    Which tax is usually the most regressive ?

    asked by Katina
  36. IT Fundmentals of Programming w/ Algoriths & Logic

    How would I write an object-oriented pseudocode for a system that allows a user to enter their name into a text box? When they press the Go button a message will be displayed in a label that says “Hello” and their name.

    asked by Ray
  37. social studies

    What political dangers did President Lincoln face when he issued the Emancipation Proclamation..I don't think Damon was able to help me or I'm looking at the question the wrong way ?Need your input on this Ms.Sue....Thank You

    asked by Joanne
  38. english

    i need to unscramble ahootnerr.

    asked by aaron
  39. statistics

    For a population of μ = 70 and σ = 20, find the z-score and percentile rank for each of the following X scores: 80, 100, 65, 40.

    asked by julide smith
  40. physics

    Determine the vertical component of a baseball's velocity if the ball is thrown at 28 m/sec at an angle of 37 degrees with the horizontal. The answer is 21.2 m/sec but I have no clue on how to solve this problem.

    asked by confused
  41. physics

    A car that weighs 15,000 N is initially moving at 60km/hr when the brakes are applied. The car is brought to a stop in 30m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force.

    asked by Dale
  42. maths

    The mean weight (1.0042kg) of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be

    asked by ben
  43. history

    Describe how influential the Cold War has been on the world of today.

    asked by dan
  44. physics

    A student wanted to drive from Austin to san Antonio ,80 mi south of Austin on highway I35. Unfortunately he entered in the wrong direction and drove to waco-100 miles north of Austin –before he noticed his error. In waco ,he turned around,drove back to

    asked by ashley
  45. econ

    What is the lowest value of economic profit that the firm must earn if it is to keep its resources in the current industry?

    asked by Anonymous
  46. Algebra

    4(7-3x)=7(4-2x) x=

    asked by Jon
  47. algebra

    12(x-6)=2(x-9) x equals?

    asked by Anne
  48. Math

    3(x-2)+4(2x-6)=6(x-4)+8(2x+1)x=

    asked by Tom
  49. Math

    7(x-2)+3(x+2)=5(x-6) x=?

    asked by Jonah
  50. Algebra

    4(7x-1)=3(2x+1)-4(x+6) x=?

    asked by Sari
  51. business communication

    Which alternative indicates the message(s), if any, which can spend considerable time discussing negative aspects of a situation? (Points: 5) Direct requests Persuasive problem-solving messages Sales messages Clearance messages

    asked by Anonymous
  52. economics

    Does anybody know what factors I can research that result in economic stratification? I can't find much from google, don't know what to look up.

    asked by Marky
  53. social studies

    What political dangers did President Lincoln face when he issued the Emancipation Proclamation ?

    asked by Joanne
  54. English

    1. He still felt fun about the show to watch the dynamic movements of the dancers. 2. He still felt funny about the show to watch the dynamic movements of the dancers. 3. He still felt fun to watch the dynamic movements of the dancers about the show. (Are

    asked by rfvv
  55. History-Civil War

    What political dangers did President Lincoln face when he issued the Emancipation Proclamation ?

    asked by Joanne
  56. English

    1. The fish I ate upset me. 2. The fish I had eaten upset me. (One more similar question, please. Are both OK? Because of the tense, #2 seems to be better. What about #1? Are both OK? Is there any difference between them?) 3.I had finished the work before

    asked by rfvv
  57. physics

    Assuming that 68.1% of the Earth's surface is covered with water at average depth of 1.21 mi. ,estimate the mass of the water on Earth. One mile is 1.609 km and the radius of the earth is 6.37 x 10^6 m. Answer in units of kg

    asked by ashley
  58. physics

    Two ants race across a table 70 cm long. One travels at 5.7 cm/s and the other at 3.99999 cm/s. When the first one crosses the finish line,how far behind is the second one? Answer in units of cm

    asked by ashley
  59. physics

    A man jogs at a spee of 1.1 m/s. His dog waits 1.6s and then takes off running at a speed of 3.8 m/s to catch up with the man. How far will they each have traveled when the dog catches up with the man?Answer in units of m

    asked by ashley
  60. physics

    The average speed of an orbiting space shuttle is 20100 mi/h. The shuttle is orbiting about 196 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the Earth? Answer in units of h ( hours)

    asked by ashley
  61. Statistics

    A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a

    asked by Anonymous
  62. Statistics

    A random sample of 51 of the largest companies in the united states gave the following P/e ratios 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 Use a

    asked by Anonymous
  63. “Charlie would like to pack one less outfit than J

    “Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each

    asked by Anonymous
  64. Translate the following situation into an inequali

    “Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each

    asked by Anonymous
  65. Essay writing

    how to narrow down a topic about the Egyptian Revolution of 25 January for an argumentative essay??

    asked by Mai
  66. History

    What were the various changes that had taken place in Europe at the beginning of the middle ages ? What were the main characteristics of the middle ages in Europe?

    asked by Abhishek
  67. Math

    I need help with math and I cant understand it

    asked by Randa
  68. Life Orientation

    What are the environmental or human factor that causes,accidents,crises or disasters which impacts negatively on people's health?

    asked by Khotso
  69. Maths

    Sherpa invests $10,000 in a saving account which pays a compound interest at R% per year if the total interest earned in 2years is $400, find the value of R.

    asked by Smartypants
  70. trig

    if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta

    asked by usha
  71. literacy

    highly repetitive and simplified mother talk is

    asked by torrey
  72. english

    please,help me find mistake in the following sentence she is very hardworking so not very imaginative

    asked by ahmed
  73. geometry

    If you make a glass in the shape of a right circular cone (think martini glass) how wide would the glass be if it is 4 inches tall and again holds 12 oz. Round to 2 decimal places. (The width is the circumference). (does not specify what 12oz are)

    asked by sharon
  74. Trig

    URGENT, Please answer this question: give the value of: Tan(Arctan x+1/x-1+Arctan x-1/x)

    asked by Mike
  75. trignometry

    if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta.i want the answer by quadratic method. can u help solving sum by that method

    asked by usha
  76. derivative

    29) Find the derivative of the function. F(X)=2x^2(3-4x)^2 This is what I have so far. I am usually pretty good at simplifying but I am missing something here. f'(x)=2x^2(4)(3-4x)^3(-4) + (3-4x)^4(4x) Here is where I go wrong. (Answer from book)

    asked by Steff
  77. bio

    Explain how genetic diversity in plants and animals supports long-term viability.

    asked by mark
  78. Math

    Hi all, hope someone could help me. I'm trying to find domain, range and asymptotes for the following functions. f(x) = 5 - e^(x-1) g(x) = ln(5 - y) + 1

    asked by Dantes
  79. Chemistry

    What volume of water would be required to dissolve 1 g of BaF2? mass of BaF2 is 1.31 g and it dissolves in 1 L of water. The answer is 0.763. Can someone please explain how they got this?

    asked by Kev
  80. trigonometry...........

    Prove the following identity:- (i) tan^3x/1+tan^2x + cot^3x/1+cot^2 = 1-2sin^x cos^x/sinx cosx

    asked by MATHS
  81. question (doubt)....

    solve to find x and y:- x^3+8y^3+x+2y=0

    asked by MATHS
  82. averages

    if you had the nos 3,19,20,37,48 out of 50 on another draw what. Would the results of another draw be

    asked by tanya
  83. accounting

    How do you prepare the following adjusting, reversing and next period entry into an unadjusted trial balance? I also need help with the rest of this problem. Cost of supplies still available December 31 is 2,700 The notes payable requires an interest

    asked by shawna
  84. Math

    I have to make two equations with the two integers {9, -3} and {2, 4}. The equations have to be done by the additon/ subtraction method and they have to become the solutions to a system, however, I do not know how to do that. Please help.

    asked by Tangie
  85. COLD WAR

    What are some of the reasons the Cold War ended and do you think there is any way this long period of history could have been avoided?

    asked by KELL
  86. Geometry

    Find the coordinates of the midpoint of the segment whose endpoints are (9,3) and (-1,-9).

    asked by LongDivision
  87. Geometry

    If /_1 and /_2 are complementary angles, and m /_1=5x-9 and m/_2=4x, find the measure of the two angles.

    asked by LongDivision
  88. Trig

    Find the amplitude, period, and phase shift of the following function: y=-2cos2(θ+45)

    asked by Tianna
  89. Chemistry

    Determine the energy in K calories needed to convert a one pound block of ice to steam

    asked by Carolyn
  90. Biology

    How could a farmer tell whether his tomatoes are pure red or heterozygous?

    asked by Bryan