# Questions Asked onJuly 31, 2011

1. ## physics

A 0.20 kg object, attached to a spring with spring constant k = 10 N/m, is moving on a horizontal frictionless surface in simple harmonic motion of amplitude of 0.080 m. What is its speed at the instant when its displacement is 0.040 m? (Hint: Use

2. ## ECONOMICS

1. When McDonald’s Corp. reduced the price of its Big Mac by 75 percent if customers also purchased french fries and a soft drink, The Wall Street Journal reported that the company was hoping the novel promotion would revive its U.S. sales growth. It

3. ## Chemistry

A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.

4. ## physics

At 20 degrees C an aluminum ring has an inner diameter of 5.000 cm, and a brass rod has a diameter of 5.050 cm. Keeping the brass rod at 20°C, which of the following temperatures of the ring will allow the ring to just slip over the brass rod? (Al = 2.4

5. ## physics

an athlete runs at a distance of 1500m in the following manner:1.starting from the rest he acceralate himself uniformly 2m/s*s till he covers a distance of 900m 2.he then runs the remaining distance of 600m at the uniform speed developed Calculate the time

6. ## Psychology

Like the popular belief that older adults do poorer in schools than their younger counterparts, the midlife crisis___________________. 1.is more accurate when describing an older population. 2.is more accurate when describing adolescents. 3.occurs more

7. ## Natural Resources

In what ways did or does tradition play important roles in the management of natural resources in history?

8. ## Phil103 Informal Logic

. If P is false, and Q is false, the truth-value of "P ¡êQ" is (Points : 1) false. true. Cannot be determined. All of the above. 2. What is the truth value of the sentence "P & ~ P"? (Points : 1) True False Cannot be determined Not a sentence 3. If P is

9. ## maths

if alpha and bita are the zeroes of ax^2+bx+c then evaluate alpha^4+bita^4

10. ## Accounting

Complete an Income Statement, Statement of Owner's Equity, and Balance Sheet using the information provided below for Rya’s Planning Services. Cash… …… ……… … … … ………\$21,500 Accounts Receivable………17,500 Office Supplies……

11. ## Chemistry practice

Using the form of energy diagram,make a concept map of the two different methods of calculation of reaction enthalpy(via the bond enthalpy and via the enthalpy of formation)

12. ## Physical Science

Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in temperature can significantly lower the reaction rate. What does this suggest about the importance of temperature-regulating

13. ## English

In "The Diray of a Young Girl" by Anne Frank, how would one interpret the messages in the poem Anne received from her father for her birthday?

14. ## biology

A scientist wishes to determine how effective a vaccine is in protecting rats against a contagious disease. What experimental procedure should the scientist use to determine the vaccine's effectiveness?

15. ## MBA Finance

Sally has won the grand prize in a lottery and must choose between the following three options: A. Receive a lump sum payment of \$10,000,000 B. Receive annual end of year payments \$2,000,000 for the next 8 years: C. Receive annual end of the year payments

16. ## geometry

Two congruent equilateral triangles have sides of 34 mm and 6x-2 mm. Find the value of x.

17. ## math.

A theater purchases \$500 worth of Sticky Bears and chocolate bombs. Each bag of Sticky Bears costs \$1.50 and each bag of Chocolate Bombs costs \$1.00. If a total of 400 bags of candy were purchased, how many bags of Chocolate Bombs did the theater buy?

18. ## physics

The acceleration due to gravity on the moon is 1.62 m/s2. What is the length of a pendulum whose period on the moon matches the period of a 4.50-m-long pendulum on earth

19. ## physics

The acceleration due to gravity on the moon is 1.62 m/s2. What is the length of a pendulum whose period on the moon matches the period of a 4.50-m-long pendulum on earth

20. ## communication

Compose a 1000-2000 word essay in which you do the following: •Identify a person who is a role model of a communicator to you, and briefly describe the characteristics that make this person a rolemodel of a communicator. Please choose someone you

21. ## math- algebra

If the principal P = \$900, the rate r = 4 1/2, and time t = 1 year, find the following: What is the amount of interest? What is the future value?

22. ## Math

A conical tank (with its vertex down) is 8 feet tall and 6 feet across its diameter. If water is flowing into the tank at the rate of 2 feet3/min, find the rate at which the water level is rising at the instant when the water depth is 2.5 feet.

24. ## calculus

A spherical balloon is being inflated so that its volume is increasing at the rate of 200 cm3/min. At what rate is the radius increasing when the radius is 15 cm.

25. ## Math

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the

26. ## Math

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the

27. ## Math

A spherical balloon is being inflated so that its volume is increasing at the rate of 200 cm3/min. At what rate is the radius increasing when the radius is 15 cm.

28. ## Math

A right circular cylinder is to be designed to hold 750 cm3 of processed milk, and to use a minimal amount of material in its construction. Find the dimensions for the container.

29. ## art history

4. What steps do you believe Samuel Adams and Thomas Hutchinson took toward becoming individuals and which steps ultimately made them such important historical figures?

30. ## Principles of Marketing

Identify the strategy decisions a marketing manager must make in the Price area. Illustrate your answer for a local retailer.

31. ## math

A card is selected from a deck of 52 playing cards. Find the probability of selecting · a prime number under 10 given the card is a heart. (1 is not prime.) · a diamond or heart given the card is red. · a King, given that the card is not a spade. Show

32. ## Math

Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = I eat too much q = I'll exercise. I'll exercise if I eat too much. Is it q->p?? I do not know how to do the

33. ## Math

A card is selected from a standard deck of 52 playing cards. A standard deck of cards has 12 face cards and four Aces (Aces are not face cards). Find the probability of selecting ·an eight given the card is a not a face card. ·a club given the card is

34. ## Marketing

Consider any product or service you are familiar with and briefly discuss the four Ps. What initial strategy and tactic is used in each of the Ps.

35. ## marketing

What is a marketing plan? What does it provide? Briefly discuss strategy and tactics associated with a marketing plan.

36. ## algebra

subtract. (5x^6+9x^4-2x^3-3)-(8x^6=8x^5+x^4-5)

37. ## Statistics

Twenty (20) students randomly assigned to an experimental group are studying for a test while listening to classical music. Thirty (30) students randomly assigned to a control group are studying for the same test in complete silence. Both groups take the

38. ## algebra

express in terms i. 2-sq.rt. 36

39. ## Math

In how many ways can 8 instructors be assigned to five sections of a course in mathematics?

40. ## physics

A BLOCK OF MASS 20KG MOVING WITH A SPEED OF 18 KM/H EXPLODES AND SPLITS INTO 2 PARTS.ONE PART OF MASS 15 KG COMES TO REST FIND THE VELOCITY OF SECOND PART?

41. ## Math

y=-x^2+1.5x+2 Find the maximum value.

42. ## chemistry

four grams of he are in a sealed, 2l container. If he were a true ideal gas, how would its behaviour differ from its actual behavior

43. ## chemistry

four grams of he are in a sealed, 2l container. If he were a true ideal gas, how would its behaviour differ from its actual behavior

44. ## College algebra

Solve. V^2-6v-16=0

45. ## maths

A ladder lies against a wall.the top of the ladder reaches 8feet above the ground. when the ladder slips 2meters away from the wall,the top of the ladder touches the foot of the wall.then length of the wall?

46. ## Math

Can u pls pls pls solve this algebraic expression?? I cant solve it although I tried many possible ways and solutions :/ 10+1/3[4k-(18+7k)]

47. ## history

Why is it significant that the vow was given to a particular person rather than a nation, written constitution, or religion?

48. ## Math

In 1976 a research hospital bought half a gram of radium for cancer research. Assuming the hospital is still exists, how much of this radium will the hospital have in the year 6836 if the half-life of radium is 1620 years?

49. ## Physics

I have an experiment in which I drop a tennis ball ,, and measure its rebound height in every bounce. one of the question regarding this experiment is - were the collisions elastic or not ? support with evidence. How do these forces magnitude compare with

50. ## Physics

A 110 V, 60 Hz AC line is connected to a 6.55 mH coil. Find the current through the coil.

51. ## engineering

How has hydraulic engineering altered local and regional environments?

52. ## Environmental problems

How did pre-modern Europeans understand and deal with what we would today call environmental problems?

In what ways did the technology of metal making and road building alter humanity's relationship with their environment during ancient times and before?

54. ## science

if an objective is massive truck parked along road side, it will probably not move.a student justifies this by answering two equal and opposite forces cancel each other. comment on this logic and explainwhy the truck does not move.

55. ## Math

2.65E4 moles e x (6.022E23 e/mole e) x (1 e/1g) = ? kg.

56. ## physics

A proton travels in the x direction and enters a region where a constant uniform electric field is directed in the y direction. Derive an equation which describes the x and y cooedinates of the proton in the field as a function of time t.

57. ## physics

A proton travels in the x direction and enters a region where a constant uniform electric field is directed in the y direction. Derive an equation which describes the x and y cooedinates of the proton in the field as a function of time t.

58. ## math

i need an answer to the math problem: 90.9 divided by (1.75 x 1.75)

59. ## math

how many gallons of water can fill a pool that is 50 yards by 20 yards and is 9 feet deep (assume 7 1/2 gallons per square foot)

60. ## Chemistry practice

Calculate using the enthaly of formation,the enthalpy of combustion of methanol,CH3OH

61. ## algebra

driving at 46 mph one covers 19mi. in how many seconds?

62. ## math

Suppose that a market research company finds that at a price of p = \$30, they would sell x = 36 tiles each month. If they lower the price to p = \$15, then more people would purchase the tile, and they can expect to sell x = 41 tiles in a month’s time.

63. ## science

A 0.20 kg object, attached to a spring with spring constant k = 10 N/m, is moving on a horizontal frictionless surface in simple harmonic motion of amplitude of 0.080 m. What is its speed at the instant when its displacement is 0.040 m? (Hint: Use

64. ## Algebra 2

You have \$2500 to invest at 6% interest compounded quarterly. For how many years will the money need to be invested for that amount to triple? correct answer is in decimal form rounded to the nearest half year

65. ## math

What is the kinetic energy of an arrow that weights 324 grains traveling 294 fps ?

66. ## integral

complete the integral e^(x^1/3)

10^x=3.26

5^(x+1)=24

69. ## biology lab

how to know from the experiment if the oxygen produced as a result of carbon fixation or electron transport? my experiment result show that average bubble/min for tap water is 4.7 while NaHCO3 is 1.8.

70. ## Geography

Discuss the process known as the "Four Modernizations" and how the attitude of the Chinese leaders in this area contrasted in response to the rise of democratic protests. When Mao Zedong died in 1976, a struggle happenned between the Gang of Four and a

71. ## English

Can you please check these few sentences? Thank you. 1) I spent the whole afternoon tidying up my second-holiday home. Are you going to get upstairs by lift/ to take the lift up to the second floor? 2) Are you going to walk upstairs? We spent an awful lot

72. ## precal 2

use law of sines to solve the triangle A=58 degree, a=4.5, b=12.8

73. ## precal 2

find the area of the triangle B=72degree 30', a= 105, c=64

74. ## precal 2

use the law of cosines to solve the triangle a=55, c=72, b=25

75. ## precal 2

find the standard form of the complex numbers 5/4 (cos 225degree + isin 225degree)

76. ## precal 2

use Demoivre's theorem to find the power [5(cos3.2 + isin3.2)]^4

77. ## precal 2

find the cube roots of the complex numbers -4square root 2(1-i) and write them in both the standard and trigonometric forms.

78. ## Chemistry

Determine the pH of a .50 M solution of H2S04 and also determine the concentration of the sulfate ion (SO42-)

79. ## MUSIC APPRECIATION

in what ways Mozart’s Requiem, a setting of the Catholic Requiem mass, and Brahms’ Lutheran German Requiem reflect the musical and religious culture of their respective churches?

80. ## aed

Students’ Rights and Teachers’ Responsibilities Scenario

81. ## Middle childhood Psychology

Is it important to start children in school according to the normal ages where they go through different mental stages? I notice that the same information is presented to children throughout the educational system but at different times so that the child

82. ## calculus

Recall that a function G(x) has the limit L as x tends to infinity, written lim(x->infinity)G(x) = L, if for any epsilon > 0, there exists M >0 so that if x > M, then |G(x) − L| < epsilon. This means that the limit of G(x) as x tends to infinity does not

83. ## Chemistry

If a sample of K3PO4 is found to contain 1.81 grams of K+ ions, how many PO3- 4 ions are present?

84. ## MGM255

•Has Wal-Mart implemented any change management strategies in the last few years to help increase revenue by promoting internal operational efficiencies? Why or why not? •Describe the organizational structure. •Do adjustments need to be made in the

85. ## Finance and Economics

Calculate the NPV of the cash flows expected in 2006-2010 using only the 2005 Cost of Capital (don’t worry about increasing costs of capital). Calculate the NPV of the cash flows using the CASH FLOW figures at the bottom of the spreadsheet, these are the

86. ## calculus

Show that the series(−1)^n−1(bn) where bn = 1/(n^1/2) if n is odd and bn = 1/2^n if n is even, diverges. Why does the alternating series test fail?

87. ## chemistry

A 1.00M solution of a hypothetical weak acid (HB) has a pH of 2.85. A solution is created using 0.10M of a salt NaB ('B' being the anion of the weak acid HB) and 50.0 ml of 2.0M acid HB (assume no change in volume). What would be the pH of the solution and

88. ## Geometry

What is the volume of a regular pyramid if it has a square base, one side of the base measures 4 cm, and the altitude is 5 cm?

89. ## algebra (college)

The # N, in millions, of hearing impaired individuals of age X can be approximated by N= 0.00006x^3 + 0.006x^2 - 0.1x +1.4. Approximate to the nearest million the # of hearing impaired individuals of ages 25 and 40. 25= 1.75 and 40= 3 (those are

90. ## Science

I need a specific example of how social and cultural influences affect science so I could take students on a field trip to explain a lesson. Does anyone have an idea? Thanks.

91. ## Writing skills

I need to write 5 sentences about the role of education in successful financial planning we need to use proper verb tense in each sentence could you tell me if I used proper verb tense in this sentence? These skills help us to use proper mathematical

92. ## human service

Where would I find information on how walmart measures customers satisfaction and the tools that are used to measure quality planning

93. ## stats

We are interested in customer satisfaction ratings for a particular video game. In a group of 65 customers, we nd a sample mean of 42.95 and the standard deviation is 2.64. Find a 95% Con dence interval for u.

94. ## stats

A manufacturer of automobile batteries claims that the distribution of battery life is 54 months with a standard deviation of 6 months. We take a random sample of 50 batteries. a. Find the probability that their mean life is less than 52 months. b. Find

95. ## Physics

Pretend our future colonists build a large round 2km diameter train track on the great plains of Mars that is sloped (angled) inward to artificially increase the gravity felt by the occupants living onboard the house sized train cars speeding along at the

96. ## physics

What is meant by the term "uniform electric field"?

97. ## Math-Confused :(

Given the bar graph below, create a grouped frequency distribution: Hours per week: 0 1 2 3 Mike 4 5 Don 6 Daniel 7 Jake, Greg 8 Asad 9 Sandra 10 Drake 11 12 Andrea 13

98. ## phi 103

"The Senator wants to cut spending on police. I guess she doesn't care if we all get murdered" May commit which fallacy?

99. ## Calc 2 taylor series

use the definition of a taylor series to find the Taylor series (centeredat c) for the function. f(x)= 7/x c=1 so what is f(x) as n goes from 0 to infinity?

100. ## Math

Below are the home states of 17 college professors. Ohio Georgia New Jersey Georgia Nebraska Michigan Ohio Pennsylvania South Carolina New Jersey New Jersey South Carolina Wisconsin Michigan Pennsylvania Ohio Wisconsin i. Make a frequency table using these

101. ## Math-Ms. Sue

The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 12 hour periods. Below is the sample: 142 171 125 91 140 125 97 125 162 142 125 117 89 125 140 128 From this data set, compute the sample mean, median, mode and

102. ## Math-geometry

Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = I eat too much q = I'll exercise. I'll exercise if I eat too much.

103. ## Math...LOST!!

Heights The frequency distribution indicates the heights of 45 male high school seniors. Height(in.) Number of Males 64 2 65 6 66 7 67 9 68 10 69 6 70 3 71 0 72 2 a) Construct a histogram of the frequency distribution. b) Construct a frequency polygon of

104. ## math

expand (1/a+√a)^5

105. ## algebra II

expand (2-i)^12

106. ## algebra II

find the 7th term of (x^3/2 y+b^2)^14

107. ## accounting

angela bennett is an employee at coopers and smith cpa firm. Angela, a part-time student, is working on her graduate degree in history. Coopers & Smith which has an educational assistance program reimburses Angela \$6,000 of her educational expenses she

108. ## Critical thinking

Assignment: Together We Stand Letter Suppose you live in a new suburban community. It offers all the amenities and benefits of a tight-knit small community, with the benefits of living close to the big city. Some years pass, and several children and adults