Questions Asked on
August 19, 2012

  1. Physics

    While working on her bike, Amanita turns it upside down and gives the front wheel a counterclockwise spin. It spins at approximately constant speed for a few seconds. During this portion of the motion, she records the x and y positions and velocities, as

    asked by Sam
  2. DR BOB PLEASE HELP CHEM

    Consider the reduction of 4-t-butylcyclohexanone. If the procedure calls for 153 mg of 4-t-butylcyclohexanone, what mass of sodium borohydride should be added?

    asked by Hannah
  3. Physics Quick!

    An archer shoots an arrow with a velocity of 49.5 m/s at an angle of 52.0¡Æ with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet

    asked by kk2
  4. chem

    A sample of an alcohol is tested and found to contain 52% carbon, 35% oxygen, and 13% hydrogen by mass. Tests indicate that the molecular weight of the molecule is between 30 and 80. What is the molecular formula of the alcohol?

    asked by greeny
  5. Math

    What is the sum of the first 40 consecutive odd numbers?

    asked by Joyce
  6. American Govt.

    Dejure discrimination and defacto discrimination are two ways in which some americans are less equal than others. Examples of public policies designed to address each of these forms of discrimination are: A.Brown decision (dejure) and affirmative

    asked by Lisa
  7. chemistry/math

    The density of air at ordinary atmospheric pressure and 25°C is 1.19 g/L. What is the mass, in kilograms, of the air in a room that measures 12.0 ft 12.5 ft 7.3 ft? i made ft^3 into Liters and got 8,346,211.799 then I made the grams into kilograms and set

    asked by Hannah
  8. college algebra

    determine the quadratic function f whose graph is given. the vertex is (1,-3) y intercept is -2 please show work so i can see how this is done, thank you!

    asked by alli
  9. math

    A new car comes in 5 exterior colors and 3 interior colors. How many different-looking cars are possible?

    asked by karla
  10. american government

    an example of a policy that aimed chiefly to overcome defacto discrimination is: a. the equal rights admendment B. busing the chieve racial integration in the schools C. the brown v board of education of topeka ruling D. the fourteen amendment

    asked by jasmine
  11. math

    Round each number to the place value indicated by the digit in bold. a. 3587 the 5 b. 148,213 the 1, in 148 c. 23,785 the 3 d. 2,357 the 5

    asked by Rachel
  12. Math

    3 tbsp. of extract are mixed with 250 ml. of oral suspension base. What is the final concentration of the suspension? I request the proper formula to figure out how to work this problem. Thank you.

    asked by Denyse
  13. Logic

    Truth tables can determine which of the following? a) If an argument is valid b) If an argument is sound c) If a sentence is valid d) All of the above

    asked by Tammy
  14. pharmacy tech

    rx: albuterol inhaler. inhale ii puffs q6h. disp: 1 inhaler. what is the total daily dosage?

    asked by mrs reeves
  15. biology

    2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

    asked by Jill
  16. math

    Can 0 be the identity for multiplication? Explain why or why not.

    asked by joey
  17. Physics

    Block A of mass 115 kg rests on a table with which it has a coefficient of limiting friction of 0.37. A light cord passes horizontally from Block A, without slipping, over a pullet of mass 34kg, radius 120 mm and radius of gyration 84mm, and down

    asked by Alex
  18. Physics Quick!

    A tire 0.650 m in radius rotates at a constant rate of 240 rev/min. Find the speed of a small stone lodged in the tread of the tire (on its outer edge). (Hint: In one revolution, the stone travels a distance equal to the circumference of its path, 2¥ðr.)

    asked by kk2
  19. physics

    how friction is non conservative in nature. explain with examples

    asked by radhey
  20. physics

    can friction be negative or can cofficent of friction be negative

    asked by radhey
  21. Chemistry

    Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of 1:200 hcl solution. My calculation 1.18g/ml x 1000ml x 0.38/36.46 = 12.3M

    asked by Fai
  22. Physics

    3 charges sit on vertical equilateral triangle the side of each is 30.0 cm. if the triangle are A= +4.0 uC B=+5.0 uC and C=+6.0 uC (clockwise from top) what is the force on each charge? Can someone please explain me in detail i am really confuse :(((

    asked by sara
  23. chem

    the combustion of 1.83 grams of a compound which only contains C,H, and O yields 4.88 grams of CO2, and 1.83 grams of H2O. What is the empirical formula of this compound? ------------------------------------------ 4.88 g CO2 x 1 mol CO2/44.01 g CO2 x 2 mol

    asked by greeny
  24. Spanish

    Will you please check my grammar? Thanks! In a one-page, typed essay, describe what you would do if you were the governor of your state (or mayor of your city). Include what you would do regarding three separate issues of importance in your state (or

    asked by Tom
  25. Pre-Algebra I

    Write in exponential notation... 95.214 how do I do this?

    asked by Margie
  26. math

    You've received an invoice for $3,000 with terms of 3/10, 1/20, n/30. How much will you have to pay if you pay the bill in 12 days?

    asked by Indu
  27. CHEMISTRY

    In TLC, why do you spot multiple times? Select one or more correct answers. A. To fill the capillary almost instantly by capillary action. B. So the developing chamber solvent does not evaporate. C. The higher compound concentration facilitates

    asked by Hannah
  28. Pre-Calculus

    I need help sketching the graph of a piecewise function. f(x) = { x² if |x|≤1, -x² if |x|>1

    asked by Peter
  29. math

    Grapes cost $2 per pound. How much does the given amount cost? 0.25 pounds.

    asked by Maddie
  30. algebra

    a tugboat goes 160 miles upstream in 20 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.

    asked by ashley
  31. Calculus

    1.(arrow above letter a pointing to the right) and (arrow above letter b pointing to the right) have the same direction, and they both have a magnitude of 6. What must be true about(arrow above letter a pointing to the right)and(arrow above letter b

    asked by alana
  32. aig math

    a factory had 1080 shirts and pants altogether.after donating 60 pants to charity the number of shirts it had was three times the number of pants left.how many pants did the factory have at first/ my answer is 315 am i right,if not please tell me why and

    asked by lidia
  33. Math

    Is 36 a perfect square?

    asked by Neo
  34. American Govt.

    Which of the following is an inaccurate statement about americans' exposure to news?

    asked by Lisa
  35. English

    What is the type of figurative language for the statement "curating and preserving memories"?

    asked by Claire
  36. American history

    How did john winthrop play an important role during colonial america?

    asked by Mike
  37. Grammar Composition

    How do you summarize 3 paragraphs of a story?

    asked by Losa
  38. physics

    Water drips from a faucet into a flask at the rate of two drops every 6 seconds. A cubic centimeter (cm3) contains 20 drops. What volume of water, in cubic decimeters (dm3), will be collected in 1 hour?

    asked by Anonymous
  39. algebra

    ‎"A column rises 16 ft. and has a radius of only 4 in. Find the volume of this column in cubic inches."

    asked by steve
  40. Spanish III Portfolio

    Hello, I am completing a written assignment for my final portfolio and I just wanted to make sure this is grammatically correct and makes sense. Prompt: Think of where you live in relation to the nearest airport. Write down directions on how to arrive at

    asked by Elise
  41. math

    one runner runs 4.75 miles in one hour and runner 2 runs 4 miles in one hour. How much farther would runner 1 run in 45 minutes?

    asked by LAK
  42. Logic

    What is the truth value of the sentence "P v ~ P"?

    asked by Tammy
  43. Algebra

    simplify the fraction ((4t^2-16)/8)/((t-2)/6) I'm having trouble solving it. I got 3(t+2)

    asked by Bubble
  44. chem

    sodium + water —>? how do you predict the products? I got sodium oxide + hydrogen instead of sodium hydroxide + hydrogen, which is the answer.

    asked by greeny
  45. chemistry

    What is the molarity of 100ml of ethanol dissolved in 1.5L of water? Ethanol has a specific of 0.789, and its molecular weight is 46g/mol. My calculation 0.789 x 1.5L = 1.1184 1.184/46g = 0.025 x= 26M I am not sure answer. Pls help

    asked by Fai
  46. English lll

    Which of the following statements about Anne Bradstreet is NOT true?

    asked by Ron
  47. Accounting

    Q1). As the chief accountant of Breathless Perfume Pty ltd, you discover a significant misstatement that overstated net profit in this year’s financial statements. The misleading financial statements are contained in the company’s annual report, which

    asked by clare
  48. chemistry

    water has a density of 1g/cm3 ; if 2 different pieces of the wood are put into water which will float and which will sink ? Wood 'a' has a density of 1.19g cm3 Wood "b" has a density of .67 g/cm3 Explain your answer?

    asked by maria
  49. Intermediate Algebra

    State the degree of the following polynomial: -2x4y + xy – y

    asked by kim
  50. health

    What can consumers do to reduce health care costs?

    asked by me
  51. health

    What is the impact of health care cost for the individual consumer? The employer?

    asked by me
  52. english

    In Great expectations, how is pip different from the convict in chapter l?

    asked by pat
  53. college algebra

    solve the following inequality. write the answer in interval notation x^3-4x^2-21x

    asked by alli
  54. English

    What type of figurative language does this statement represent (if it does at all): "Buried deep beneath the stories about executive bonuses..."

    asked by Claire
  55. math

    If you place the ... comparing 1272 and 1269. Do you need to cmpare the ones digits? Which number would be the farther to the right on the number line and why?

    asked by Anonymous
  56. Civics

    Isn't there a term that for when you find people with college degrees working at a fast-food franchise?

    asked by Anon
  57. math

    sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of 400 dollars. Was $2 a fair price to pay for a ticket to play this game?

    asked by mike
  58. Math

    In a survey of 100 women, 34 use shampoo A 42 use shampoo B 31 use shampoo C 9 use shampoo A&B 10 use shampoo A&C 6 use shampoo B&C 2 use all three How many use shampoo A & C, but not B?

    asked by LaCresha
  59. Anthropology

    Can any one give some good suggestions of mummies on which various scientific methods have used to study them?

    asked by Random
  60. Pre algebra math

    How do I do 21 - y, explain

    asked by Chris
  61. biology

    How do I convert km to nm? Like 299.32 km = nm

    asked by Jaton
  62. math

    f(x)=-2x3+20x2-48x =(?)(-2x)(X-6) how do I find the missing factor of this?

    asked by samantha
  63. Child Development

    • Choose two age groups from different periods in the physical development process. Give some thought to the age groups you choose, as you will focus on them in later weeks and for the final project. • Compare what you would expect to see in the

    asked by Mommy3
  64. Psychology

    The authors of your textbook describe the American emphasis on the pursuit of happiness. Write a 700- to 900-word paper explaining the cultural and historical factors that contribute to this perspective. Contrast the traditional American perspective on

    asked by Mommy3
  65. physics

    Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate.

    asked by Josh
  66. Calculus

    A club has 45 members and its membership committee has 7 members. How many different membership committees are possible? I keep getting 1.6336632e10, but I know its not right somehow

    asked by Timofey
  67. chemistry

    A 0.446g sample of an unknown monoproctic acid was titrated with 0.105 M KOH The molar mass is 120g/mol. What is the PKA value? Pls helps me again

    asked by Fai
  68. Calculus

    find coefficient of x^8 in expanding of (x-2)^11

    asked by Rich
  69. math

    Jonah has a large collection of marbles. He notices that if he borrows 5 marbles from a friend, he can arrange the marbles in rows of 13 each. What is the remainder when he divides his original number of marbles by 13?

    asked by rich
  70. math

    Xuan saved $5340 in 3 years. If he saved $95 per month in the first year and a fixed amount per month for the next 2 years, how much did he save per month during the last 2 years?

    asked by Rachel
  71. Science

    Why is it that you cannot use the largest objective for some slides?

    asked by Amelia
  72. Principles of Macroeconomics

    Describe how expectations affects aggregate supply and demand through a classical perspective or keynesian perspective

    asked by Brenda
  73. Science (Microscope)

    Explain why some parts are in focus and some part are out of focus when you are trying to focus an object under the microscope.

    asked by Bianca
  74. macroeconomics

    evaluate expectations through a Keynesian perspective or classical perspective. I need help figuring out how to do this.

    asked by Brenda
  75. physics

    suppose the glider is initially at rest at x=0, with the spring unstretched. You then apply a constant force in the +x direction with magnitude 0.610 N to the glider. what is the glider's velocity when it has moved 0.100m?

    asked by Carl
  76. math

    the force of gravity varies inversely as the square of the distance between the centers of the two masses. If an object weighs 500 pounds at a distance of 12,000 miles from the center of the earth, at what distance will the weight be 50 pounds

    asked by Mako
  77. Math

    A cylindrical solid whose radius and height are equal has a surface area of 154cm2.Calculate its radius?

    asked by Anonymous
  78. Physics

    Handling of e-waste

    asked by Ananthu
  79. varsity

    A skydiver, with her gear, weighs 75 kg. She jumps from a helicopter at an altitude of 2 500 metres, waits 20 seconds and then opens her parachute. Assume that her initial velocity is zero, and also assume the following regarding air resistance: air

    asked by karli
  80. physics

    the gravitational force between two object is F . How will this force will change when the distance between them is reduce to half?

    asked by Aishwarya
  81. physics

    why rain falls in drops form

    asked by radhey
  82. Physics Quick!!

    At t = 0, a particle moving in the xy plane with constant acceleration has a velocity of i = (3.00 i − 2.00 j) m/s and is at the origin. At t = 2.00 s, the particle's velocity is = (6.60 i + 7.00 j) m/s. (Round your coefficients to two decimal places.)

    asked by kk2
  83. Maths

    A garage bought 55000 litres of petrol for 86 pence a litre and sold it for 96 pence a litre calculate how much garage paid for petrol.

    asked by Adam
  84. math

    two drums contain 600lts. and 800 lts. of water . find the size of the largest vessel that can be filled an exact number of times from each drum.

    asked by sumit
  85. physical geography

    From darrel hess physical geography manual 10th edition. How many plates on the map consist entirely of ocean floor or ocean floor islands?

    asked by jae
  86. Math

    In still air a plane has air speed 300km/h and flies on a bearing of 110 degrees. If the wind is blowing at a speed of 100km/h from a bearing of 60 degrees, find the actual velocity of the plane.

    asked by Bafhenyi
  87. Medical termanology

    Write a fictitious medical report of about two paragraphs describing a dermatologic condition or disease. Focus the report on the onset,progression,location,and etiology of the condition or disease and the treatment parameters.

    asked by Ella
  88. economics

    Suppose that when a firm increases output by 20%, long-run total cost increases by 50%. The firm will experience

    asked by Annie
  89. geometry

    In Exam Figure 7, AA′ = 33 m and BC =7.5 m. The span is divided into six equal parts at E, G, C, I, and K. Find the length of A′B. Round your answer to two decimal places.

    asked by debbie