# Questions Asked onJuly 28, 2010

1. ## Physics

Figure 10-42 shows a uniform disk that can rotate around its center like a merry-go-round. The disk has a radius of 2.00 cm and a mass of 20.0 grams and is initially at rest. Starting at time t = 0, two forces are to be applied tangentially to the rim as

2. ## Chemistry

I am completing my lab and cannot figure this out. I need someone to go over it and make sure I am right because I can't figure out why my empirical formula does not match the molecular formula. #7 is the one I am really having a problem with, but here is

3. ## physics

A long, vertical, straight wire carries a current I going upwards. The wire is perpendicular to the plane of a circular metal loop and passes through the center of the loop. The loop is allowed to fall and maintains its orientation with respect to the

4. ## Physics

The rigid object shown in Fig. 10-63 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°. The balls may be treated as particles, and the connecting rods have negligible mass. Determine the rotational kinetic energy

5. ## math

Hooke's Law. The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 64cm when the weight is 3kg, what is the distance when the wight is 9kg?

6. ## Math

PQR ~ STU. PQ = 12cm and ST = 9cm. The area of STU is 72 cm². Find the area of PQR.

7. ## Math-Stats

The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 418 jawbreakers that weigh

8. ## Physics (Static Friction)

When you take your 1300-kg car out for a spin, you go around a corner of radius 56.9 m with a speed of 15.8 m/s. The coefficient of static friction between the car and the road is 0.75. Assuming your car doesn't skid, what is the force exerted on it by

9. ## physics

In the figure we see two blocks connected by a string and tied to a wall, with theta = 33°. The mass of the lower block is m = 1.0 kg; the mass of the upper block is 2.0 kg. The tension of the string connecting the blocks is 5.337. Find the tension in the

10. ## Physics - Another Question

"Three forces act at a single point. Two of the forces are 39N southwest and 45N north. What is the value of the third force that creates equilibrium?"

11. ## Chemistry(URGENT!)

determine whether the following salts will form acidic, neutral or basic solutions in water. Na2HPO4 CaNO2 NH4CH3COO Al2SO4 NaF Please, i need the answer to this question within 2 hours of when i post this!

12. ## english

-symbolism of the fence in "Araby" by James joyce? -and the bibical allusions? that are creative and imaginative? thanks! if you could help

13. ## physics II

A certain material is in a room at 27°C. If the absolute temperature (K) of the material is tripled, its resistance doubles. (Water freezes at 273 K.) What is the value for alpha (a) the temperature coefficient of resistivity?

14. ## physics

a mass of 0.1kg falls freely under the action of gravity .find the force acting on it its momentum kinetic energy after 10s?

15. ## Economics

A vice president of a company argues that the president of the company should raise workers’ wages if the president wants less absenteeism. The president says that wages probably should be cut so that the workers could not afford to miss so much work.

16. ## Physics

"Two wooden blocks A and B have respective masses of 3.0kg and 4.0kg and are connected with an inextensible cord. If the blocks are placed on a horizontal frictionless surface and a force of 8.0N is applied to A, find the tension in the connecting cord."

17. ## geometry

The shortest side of a polygon of area 196 sq. in. is 4 in. long. Find the area of a similar polygon whose shortest side is 8 in. long.

18. ## Elementary Stats

A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of 10 adults over 50, what is the probability that exactly eight wear glasses?

19. ## Physics

The rigid object shown in Fig. 10-63 consists of three balls and three connecting rods, with M = 1.5 kg, L = 0.67 m, and θ = 32°. Fig. 10-63 The balls may be treated as particles, and the connecting rods have negligible mass. Determine the rotational

20. ## Science

a certain plant's roots contain higher concentrations of nitrates than the soil that surrounds them, which mechanism explains the movement of the nitrate from the soil into the plant's roots? is it facilitated diffusion

21. ## physics

A step-down transformer has a turns ratio of 1:10 and its primary is connected across the terminals of a standard 120 V wall socket. A 330 ohm resistor is connected across the secondary of this transformer. What power P is dissipated in the resistor?

22. ## geometry

how do you solve m

23. ## Algebra

5x + 4y = -8 6x - 4y = -80

24. ## probability. review questions

1)what is the probability that a seven-digit phone number has one or more repeated digits? 2) five letters, with repetition allowed, are selected from the alphabet. what is the probability that none is repeated?

25. ## physics

A bullet with mass 0.40 kg is fired with an initial velocity of 400 m/s from a gun with mass 5.0 kg. The speed of the recoil of the gun is

26. ## estimate sums and differences

Round to the greatest place of the lesser number? 708 + 88 + 552 = ? Round to the greatest place of the greater number? 708 + 88 + 552 = ?

27. ## Algebra I

Rectangle ABCD has vertices C and d on the x-axis and vertices A and B on part of the parabola y = 9 - x^2 that is above the x-axis. a.) Find the coordinates of A, B, C, and D in terms of x. b.) Determine the Area of the rectangle as a function of x. c.)

Your boss wants to send a brief email message welcoming employees recently transferred to your department from your Hong Kong branch. They all speak English, but your boss asks you to review his message for clarity. What would you suggest your boss change

29. ## physics

When light strikes glass perpendicularly, about 5.5% is reflected at each surface. How much light is transmitted through a pane of window glass?

30. ## us history

What war was a clear expression of manifest destiny, and what agreement ended that war?

31. ## Finance

Delta Software is considering a new project whose data are shown below. The equipment that would be used has a 3-year tax life, after which it will be worthless, and it will be depreciated by the straight line method over 3 years. Revenues and other

32. ## physics

The primary coil of a transformer is connected to a standard wall socket. A resistance R is connected across the secondary coil. The resistance across the secondary coil is increased. What happens to the current in the primary coil, and what happens to the

A rope is 9,000 centimeters long. How many meters long

34. ## survey of mathematics

The numbers 1-10 are written on a sheet of paper and the ten sheets of paper are placed in a bowl. If one sheet of paper is selected at random from the bowl, determine the probability that the number selected is odd. (Points: 1)

35. ## chemistry

what is the pH of 0.15 M NaF?

36. ## Algebra

Find a polynomial function having the following zeros: – 5, 3 (multiplicity 2), 2 + i, 2 – i; degree 5.

37. ## chemistry

Calculate the pH of the solution that results from the mixture. 170 mL of 0.12 M C2H5NH2 with 285.0 mL of 0.22 M C2H5NH3Cl.

38. ## math

Cynthia is three years old than Dina. The sum of their ages is 31. Find their ages.

39. ## math

michael rides his bike 2 3/5 as long as jacob. find micheal's riding times if jacob rides for 45 minutes

40. ## math

a daisy is 24 inches tall . the height of a sunflower 3 1/2 times the height of the daisy.find the height of the sunflower umm 20

41. ## Grammar

Write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence. Mark each verb used in bold and, in parentheses, identify the specific tense used.

42. ## physics

A butterfly at eye level is 21 cm in front of an plane mirror. You are behind the butterfly, 53 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?

43. ## Math(word problem)

For the line joining points A(-1, 3) and B(5, 7): a.Find the midpoint of the line. b.Find the distance of the line. c.Find the slope of the line. d.Find the y-intercept of the line. e.What would be the slope of a line perpendicular to this line?

44. ## physics

Two objects attract each other with a gravitational force of magnitude 0.99 10-8 N when separated by 19.1 cm. If the total mass of the objects is 5.01 kg, what is the mass of each?

45. ## math

name the additive inverse, opposite of each number. 1.8 - 8+(-8)= 0 2.5 - 5+(-5)= 0 3.3/4 - 3/4+(-3/4)=0 4. 1 1/2 - 1 1/2+(1 1/2)=0

46. ## geography

3. the soil of much of the steppe region of northern eurasia is ... A. very fertile and productive B. lacking in minerals and unproductive C. too cold to produce much food. D. heavily fertiled with chemicals to make it marginally productive.

47. ## Statistics

a. Find the mean, median, and range for each of the two data sets. b. Find the standard deviation using the rule of thumb for each of the data sets. c. Compare the two sets and describe what you discover. The following data sets shows the ages of the first

48. ## PHYSICS Gr 12

A pilot is flying his aircraft in a vertical loop. He can't stand "feeling" more than 7.0 g's at the bottom of the loop. If he travels at 800km/h, what is the radius of his loop?

49. ## Science/Math

I have to figure out what percentasge of time each cell is in a phase. I have 5 phases. That equal to 36 cells in each phase. 1st phase 20 cells 2nd phase 10 cells 3rd phase 3 cells 4th phase 2 cells 5th pase 1 cell. This is based on a 24 hour period and

51. ## geometry

A triangle is formed where line segment AC and line segment BC have the same length. If the measure of angle ACB = 81 degrees, find the measures of angles x and y so that the top horizontal line will be parallel to the bottom horizontal line.

52. ## math

the distance from library to park is 1.2 to park and the distance from the park to the pool is 0.5 miles.the park is between the libarary and pool.whats the distance from the pool to the library

53. ## economics

Assume there are three markets: A: Wool; B: Synthetic Fiber; C: Business Travel.Using demand and supply analysis explain what happens in the SHORT RUN in all three markets and why?

54. ## chemistry

Calculate [acetate] of 0.057 mol/L solution of acetic acid of Ka = 1.76x10^-5 i know to find Ka it's: Ka= products/reactants so i tried doing an ICE table with the equation to be: CH3CO2 + H2O CH3COOH + H am i on the right track? if not...help please!

55. ## algebra

a car rents for \$30 per day plus 23 cents per mile . You are on a daily budget of \$76. What milieage will allow you to stay whithin your budget?

56. ## trig

list the period, amplitude, interval, and phase shift of: g(t)=5/2sint-pi i know the amplitude is 5/2 but everything else im not getting. the regular formula for these is y=Asin(Bx+C)+D A is the amplitude B is the period which you use (2pi/b) to solve. C

57. ## diffrential equations

Find two linearly independent power series solutions to the diffrential equation. State the first 3 therms of each series: 2x^2y''+xy'-(1+2x^2)y=0

Technology is changing the face of business communications. Do you think businesses effectively use these resources to communicate? Why or why not? Provide examples.

59. ## math

Ansell now is 3 times as old as Bert. Five years from now he will be twice as old as Bert is then. Find both ages.

60. ## math

name the property shown by each statement 9. 34+42=42+34:commutative 10. 8x(53+12)= (8x53)+(8x12): distributive 11.1/16x16=1: inverse property 12.16x(5x15)=(16x5)x15 : associative 13. 2/5x5/3=5/3x2/5:commutative

61. ## math

Cynthia is three years older than Dina. The sum of their ages is 31. Find their ages. what are the equation for Dina and for Cynthai

62. ## economics

Assume there are three markets: A: Wool; B: Synthetic Fiber; C: Business Travel. Assume we are in the years after the introduction of synthetic fibers. Using demand and supply analysis explain what happens in the SHORT RUN in all three markets and why?

63. ## com 155

Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. · Bold each adverb. · Underline each adjective. · Compare the event to one or more similar events. When comparing,

64. ## LAccounting

If total assets decreased by \$47,000 during a period of time and stockholders' equity increased by \$24,000 during the same period, then the amount and direction (increase or decrease) of the period's change in total liabilities is

65. ## Algebra

Swimming space. The length of a rectangular swimming pool is 2x-1meters, and the width is x+12 meters. Write a polynomial A (x) that represents the area. Find A (5) Answer: Area=(2x-1) (x+12)sq m A=2x(x+12)-1(x+12) =2x^2+24x-x-12 =2x^2+23x-12 sq m X=5

66. ## Algebra

Square lot. Sam has a lot that he thought was a square, 200 feet by 200 feet. When he had it surveyed, he discovered that one side was x feet longer than he thought and that the other side was x feet shorter than he thought. a). Find a polynomial A(x) that

67. ## College/Healthcare Accounting

What is the profit variance of 0.3 million? And how is it converted into millions (0.3)

68. ## statistics

A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection

69. ## Calculus

Convert the following into spherical coordinates: X^2+y^2+Z^2 = 36.

70. ## cjs 200

What are the steps leading to a trial?? Can someone help me??

71. ## algerbra operations

How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions? Can understanding how to work with one kind of problem help understand how to work another

72. ## psychology

Post a 200- to 300-word response to the following: Describe the stages of sleep. In which stage do we dream? What are the five common beliefs about dreaming? What are the two common theories about dreams?

73. ## Writing

For school I have to write a formal business letter. I just can't think of a way to START the letter off. I have to write to Seteven Spielberg convincing him to make a movie out of the book Andromeda Strain. (Even thhough it already is a movie.) But I

74. ## Algebra 2

x^4 - x

asked by Arielt -Help now fast due tommorow
75. ## math

14. (32+48)+52=32+(48+52) associative 15. 256+0=256 identity property 16.3/10x10/3=1 inverse property 17.1x143=143 identity property 18. 81+(-81)=0 inverse property

76. ## math

Orly's age is 4 years more than thrice Perla's age. Four years ago, Orly was four times as old as Perla was then. How old is each now?

77. ## College Chemistry for Health Sciences

Explain all the Organic chemical reactions and IMF interactions for (A) Glycogen and (B) a triglyceride with a trans double bond at the Omega- 6 position on the middle chain.

78. ## SCI 275

Can you provide me with an example of a management and sustainment plan for freshwater pollution. Thank You!

79. ## english

Each day Gina stuck to her routine. She rose at six o'clock and sat at her desk writing until noon. At noon she had a light lunch of fruit and milk. After this sparse repast she headed into town to do her shopping. She shopped for groceries, stamps, and

80. ## english

please give the meaning of Pitched for and give one example sentence. I did not find the meaning in the dictionary.

81. ## math

the digits of a two digit number are reversed. when both of these numbers are added the result is 88 and when subtracted the result is 54. the original two digit number contains which of the following digits 2 3 5 or 7

82. ## english

Select the sentence that is punctuated correctly. (Points :1) Zora s lemon tree produces too much fruit. She gives them away therefore, to her friends and ...

83. ## Fundamentals of Law

Assignment Type: Individual Project Deliverable Length: 1-2 pages Points Possible: 130 Due Date: 8/1/2010 11:59:59 PM CT Your sister has come up with what she thinks is a brilliant idea for a home-based business - a website which helps lonely people find

84. ## Math /Equations

Hi. I need to find the distance between the two points and then round the answer to the nearest hundredth. (8,4) and (18, 28). Thank you so much.

86. ## geography

1)give two properties of gold which makes it an economically valuable mineral 2)what is the difference between gold and an ordinary rock? 3)what is difference between gold mine and gold prospect?

87. ## College physics

What is the effect of inserting a ferromagnet inside a winding coil where current flows? The effect is to Fill in the Blank 01 (increase/decrease) the magnetic field inside the coil compared to the field that would have been produced in free space. This

88. ## english

The sentences in each word group below are coherent because they are linked by repetition of the same word, by synonyms, and by pronouns. Type the words that tie the sentences together in each group. Though he worked long hours, Uncle Drew had a purpose to

•Do the company's actions fit the definition of a crime? If so, what kind, a felony or a misdemeanor? Why or why not? Articles: Ex-WorldCom Chief Ebbers Convicted of Fraud Reliant Energy Services, Inc. and Four of its Officers Charged With Criminal

90. ## MATH/ EQUATIONS

Hi. I have a question I need to write an equation that is parallel to the line y= -4x +3 and a y-intercept of -5. Thank you!

91. ## Algebra

Pseudoephedrine hydrochloride is an allergy medication. The polynomial L(t) = 0.03t4 + 0.4t3 – 7.3t2 + 23.1t, where 0

92. ## Chemistry

a 700 mL flask contans 0.500 moles of O2 at 25. degrees celcius what is the pressure in atmosphers.

93. ## math

Q-2: In a subdivision, 67% of the homes have detached garages, 32% have a patio, and 13% have both. What is the probability that a house has a patio if you know that it has a detached garage?

94. ## Biology

Approximately, how many functions does the liver perform?

95. ## college differential equations

Find two linearly independent power series solutions to the diffrential equation. State the first 3 therms of each series: 2x^2y''+xy'-(1+2x^2)y=0

96. ## Math (Algebra) Repost from July 27, 2010 at 4:13pm

Could someone help to explain to me how factoring is used to solve quadratic equations? Also could you give me some example to try? Thank You.

97. ## math

what are the equation for Orly and Perla

98. ## Algebra

I need help solving these two problems.... (-9r^3/t^6) and (30,000)(80,000)/(0.000006)(0.002) I do not even know where to start with either of them Thanks in advance for any help provided.

99. ## com 155

Describe the strategies you have developed to avoid confusing the use of adverbs and adjectives in the future.

100. ## algebra 2

It says to: Use the Distributive Property to show that the following are true statements: 8.5m + 1.3m = 9.8m What does it mean to use the distributive property? Can't i just add the first two terms?

101. ## Chemistry

Please help, test tomorrow. Explain the organic chemical reactions and IMF interactions for glycogen and triglyceride with a trans double bond - how does this look?

102. ## 103 intro to philosophy and ethics

I was asked why is a worldview a complex of various components and how do those components cohere?

103. ## english

my teacher ask me What recommendation does the calculator make for you? what that mean

104. ## C++ Programming

Hello. I use Visual C++ 2010 Express and don't know why this is occuring. I go into Skript.rc Push F7 to build the RC script first. Output says... Fatal error RC1015: cannot open include file 'afxres.h' Other sources tell me to replace it with windows.h

105. ## Math(word problems)

4.Tracie invested \$x at 7% and \$y at 6%. Write algebraic expressions for: a.the total amount of money invested b.the interest earned at 7% in one year c.the interest earned at 6% in one year d.the total interest earned in one year

106. ## math

name the multiplication inverse, or reciprocal of each number. 5.4 - 4x1/4=4/1=1 6.7 - 7x1/7=1/7=1 7.2/5 - 2/5x5/2=1 8.7/16 - 7/16x16/7=7/16x/7/=1

107. ## english

Zora s lemon tree produces too much fruit. She gives them away therefore, to her friends and english (Points :1) Zora' s lemon tree produces too much fruit. She gives them away, therefore, to her friends and ... (Points :1) Zora' s lemon tree produces too

108. ## algebra 117

can you explain I am having hard time understanding this. yes it when the crosses over x-axis. Not good a graphing

109. ## math

Ansell now is 3 times as old as Bert. Five years from now he will be twice as old as Bert is then. Find both ages. how can you translate this problem to linear equation.

110. ## Math

x +/- 3 is that mroe simplified then writing it out x + 3, x - 3 I thought it would be becaue we normally say simple is when all of the operations that could be done is done in which case the second choice is more simple? I'm just woundering because i'm

111. ## english

The indefinite pronouns all, any, more, most, and some are always singular in meaning. (Points : 1) True False

113. ## computer programs

I'm having a problem with Microsoft Word, inserting pictures. I don't know where to go for help, so I thought I would try here. Anyone? Thanks

114. ## Algebra

Patchwork. A quilt patch cut in the shape of a triangle has a base of 5x inches and a height of 1,732x inches. What polynomial represents its area? Answer: Area of triangle is ½*b*h B=5x H=1732x A=1/2*5x*1732x=4330x^2 A=L*W L=2x-1 W=x+12 A=(2x-1)*(x+12)

115. ## algebra 117

If you are looking at a graph of a quadratic equation, how do you determine where the solutions are?

116. ## Medical Law

What is the role of administrative agencies in the current health care environment?