# Questions Asked onAugust 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

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?

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

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?

5. ## Math

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

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

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

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!

9. ## math

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

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

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

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.

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

14. ## pharmacy tech

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

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.

16. ## math

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

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

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.)

19. ## physics

how friction is non conservative in nature. explain with examples

20. ## physics

can friction be negative or can cofficent of friction be negative

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

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 :(((

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

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

25. ## Pre-Algebra I

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

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?

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

28. ## Pre-Calculus

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

29. ## math

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

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.

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

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

33. ## Math

Is 36 a perfect square?

34. ## American Govt.

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

35. ## English

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

36. ## American history

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

37. ## Grammar Composition

How do you summarize 3 paragraphs of a story?

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?

39. ## algebra

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

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

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?

42. ## Logic

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

43. ## Algebra

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

44. ## chem

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

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

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

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?

49. ## Intermediate Algebra

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

50. ## health

What can consumers do to reduce health care costs?

51. ## health

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

52. ## english

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

53. ## college algebra

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

54. ## English

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

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?

56. ## Civics

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

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?

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?

59. ## Anthropology

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

60. ## Pre algebra math

How do I do 21 - y, explain

61. ## biology

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

62. ## math

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

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

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

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.

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

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

68. ## Calculus

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

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?

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?

71. ## Science

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

72. ## Principles of Macroeconomics

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

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.

74. ## macroeconomics

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

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?

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

77. ## Math

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

78. ## Physics

Handling of e-waste

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

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?

81. ## physics

why rain falls in drops form

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.)

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.

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.

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?

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.

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.