# Questions Asked onJuly 18, 2011

1. ## phy

A 3.50 kg block on a smooth tabletop is attached by a string to a hanging block of mass 2.80 kg. The blocks are released from rest and allowed to move freely. 1-Is the tension in the string greater than, less than, or equal to the weight of the hanging

2. ## English

in the sentence the man in the back row brought his friends with him what are the parts of the sentence

3. ## Chemistry

Dinitrogen tetroxide decomposes to nitrogen dioxide: N2O4 (g) ---> 2NO2 (g) Delta H rxn: 55.3 kJ At 298 K a reaction vessel initially containing .100 atm of N2O4. When equilibrium is reached, 58% of the N2O4 has decomposed to NO2. -What percentage of N2O4

4. ## phy

A child goes down a playground slide with an acceleration of 1.36 m/s^2. 1-Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 28.0 deg below the horizontal.

5. ## phy

A force of magnitude 7.50 N pushes three boxes with masses m_1 = 1.30 kg,m_2 = 3.20 kg, and m_3 = 4.90 kg .The mass is side by side. 1-Find the magnitude of the contact force between boxes 1 and 2, and 2-Find the magnitude of the contact force between

6. ## physics

Pelicans tuck their wings and free-fall straight down when diving for fish. Suppose a pelican starts its dive from a height of 15.0 m and cannot change its path once committed. If it takes a fish 0.25 s to perform evasive action, at what minimum height

7. ## math

Why do Eskimos wash their clothes in tide? 10 letters (doesn't have to be one word) The answers:Cold out tide,Too Cold Out, Its cold Out, and No tap water don't work.

8. ## Chemistry

A 0.100g sample of a compound containing C, H, and O is burned oxygen producing 0.1783 g of CO2 and 0.0734 g of H2O. Determine the empirical formula of the compound.

9. ## chemistry

will the following solutions be acidic, neutral, or basic? Write the net ionic equation for any reaction that takes place. NH4Cl, KHCO3, LiClO4, NH4NO3, H2CO3, LiClO2, Ba(NO3)2

10. ## Calculus

an open box is made by cutting out squares from the corners of a rectangular piece of cardboard and then turning up the sides. If the piece of cardboard is 12 cm by 24 cm, what are the dimensions of the box that has the largest volume made in this way?

33. ## Scholarship Essay

Why do I deserve this scholarship? 250 words or less. Any advice on the paragraph itself or on grammar is greatly appreciated. Throughout my life, I have faced multiple obstacles that I have not let hold me back. I am the first person in my family to not

34. ## geometry

How to costruct a parallelogram named HEAR.HE=5cm,EA=6cm and angle R=85 degree.I WANT answer quickly.

35. ## english

write the character sketch of phyllis from the novel "the railway children"by E-nesbit

36. ## chemestry

nitrous oxide (N2O) is used as an anesthetic. the pressure on 2.50 L of N2O changes from 105 k Pa to 40.5 kPa. If the temperature does not change, what will the new volume

37. ## math

Water is flowing at a rate of 10 m3/s into the cylindrical tank shown below. a) Find the volume V of the water as a function of the water level h. b) Find h as a function of the time t during which water has been flowing into the tank. height of cylinder:

38. ## Operations Management

Setup Times Read the case study below “Hi-Ho Yo-Yo, Inc.”. Write a short summary of each of the four methods for selecting the order in which to release the products to printing. Complete a short analysis for each method which provides the average flow

39. ## Chemistry

A line in the Lyman series of the hydrogen atom emission results from the transition of an electron from the n=3 level to the ground state level. a) What n level (#) is the ground state level for the hydrogen atom? b) What is the energy of this photon in

40. ## math

A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively; each unit of B requires 3, 4

41. ## Physics

A 10 kg block is pushed across a rough surface by a 25N force the block moves at a constant velocity when this force is applied. A) determine the magnitude of the friction force acting on the block B) What is the coefficient of friction between the surface

42. ## phy

You pull upward on a stuffed suitcase with a force of 150 N, and it accelerates upward at 0.760 m/s^2. 1-What is the mass of the suitcase? 2-What is the weight of the suitcase?

43. ## phy

When you push a 1.82-{\rm kg} book resting on a tabletop, it takes 2.21 N to start the book sliding. Once it is sliding, however, it takes only 1.52 N to keep the book moving with constant speed. 1-What is the coefficient of static friction between the

44. ## math

A manufacturer has a maximum of 240, 360, and 180 kilograms of wood, plastic and steel available. The company produces two products, A and B. Each unit of A requires 1, 3 and 2 kilograms of wood, plastic and steel respectively; each unit of B requires 3, 4

45. ## AP HS Chemistry

I need help. In simple english please, what is Hund's Rule, Pauli Exclusion Principal, and the Aufbau Principal? I need to know these. Please try to be simple as possible because I'm not understanding right now, haha. Thanks!! :)

46. ## physics

Hi I need to know how much ground water presuure would be required to lift a 1.200m diameter plastic tank weighing 650kg out of the ground please, Please supply the answer in Kpa or psi Cheers

47. ## algebra

Write an equation of the line parallel to the line given by 3x-2y=8 and having the same y- intercept as the line given by 2y+3x=-4

48. ## Financial Accounting

ane Doe of Creative Marketing was recording transactions into the accounting records to prepare financial statements for the bank in a loan application. Her expenses were higher than anticipated and she was concerned about the effects on net income. As she

49. ## chemistry

for the chemical reaction A+B= C+D, the following experimental data were taken to determine the ratelaw equation at 300K. determine the rate law for the chemical reaction. fromthe experiment data i found out the exponetial value... but 300k part confuses

50. ## Math

Prove each identity: a) 1-cos^2x=tan^2xcos^2x b) cos^2x + 2sin^2x-1 = sin^2x I also tried a question on my own: tan^2x = (1 – cos^2x)/cos^2x R.S.= sin^2x/cos^2x I know that the Pythagorean for that is sin^2x + cos^2x That's all I could do.

51. ## physics

a bus is driving through traffic as it makes a number of express stops. the bus drives at a speed of 10 m/s2 for 90 seconds then drives at a speed of 15m/s for 120 seconds before stopping for 30 seconds, then drives at a speed of 5m/s for 60 seconds before

52. ## phy

Pulling up on a rope, you lift a 4.05 kg bucket of water from a well with an acceleration of 2.50 m/s^2. 1-What is the tension in the rope?

53. ## Chem

What would a titration curve look like for 25 mL of 0.400 M NH3 (aq) with 0.200 M HCl (aq) -find initial pH -find 1/2 equivalence point pH and volume of HCl required to reach this point -find equivalence point pH and volume required to reach this point

54. ## chemistry

Determine the final pressure of a gas that has an initial pressure of 1.00 atm and is heated from 20 °C to 30 °C. Round to the nearest hundredth. Don't forget the units.

55. ## algebra

The half-life of 234U, uranium-234, is 2.52 105 yr. If 97.7% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed

56. ## american government

the presidents roles such as chief executive and commander in chief :

57. ## Physics!!

A centrifuge is a device in which small container of material is rotated at a high speed on a circular path. Such a device is a used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum

58. ## Physics

two forces act concurrently on a 5kg block resting on a smooth horizontal surface a 5N force making a 40degree angle with the surface and a 10n making a 20degree angle with the surface. A) Determine the magnitude and direction of the net force acting on a

59. ## Physics

A 1200 kg car accelerates to the right at 7m/s2 along a special frictionless track. Determine the magnitude and direction of the force the engine exerts to accelerate the car? A wind blows heavy winds into the car's path.As a result the car's acceleration

60. ## health

Critically DISCUSS 5 WAYS IN WHICH THE SOCIAL OR ENVIRONMENTAL PROBLEM IMPACT ON THE COMMUNITY.PROVIDE RELEVANT SOURCES TO SUPPORT YOUR CLAIM

61. ## Calculus

Find the derivative of: y= 5^x + 15/x^6 I'm assuming I need to take the natural log of each side, but I get stuck after that part.

62. ## Physics

15kg block rests on a rough surface (u=.35) a 100N force to the left is applied to the block. what is the magnitude and direction of the net force acting on the block? How quickly will the block accelerate over the rough surface?

63. ## Asaudeen seniur high school i.e mathematics

Find the range of value of x for which 13>3x-23 where all the members are integers

64. ## algebra

Short answer. find the following product.(x+2)^2

65. ## algebra

Write an equation of the line containing the specified point and perpendicular to the indicated line. (6,0), 5x+4y=1

66. ## algebra

Essay. Show all work. Find the following quotient: 36x^2-49y^2 ----------- 6x+7y

Essay: Show all work. A gardener wants to create a rectangular garden with length of 2x-3y ft. and width of x+4y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out, express in simplest correct mathematical form,

68. ## Physics

A spring scale has a spring coefficient of 400 n/m. Determine the mass of an object if it causes the scale's platform to sink .08m.

69. ## math

Maximize z = 16x + 8y subject to: 2x + y ≤ 30 x + 2y ≤ 24 x ≥ 0 y ≥ 0 Graph the feasibility region. Identify all applicable corner points of the feasibility region. Find the point(s) (x,y) that maximizes the objective function z = 16x + 8y.

70. ## Life orientation

Identify one environmental factor that causes ill health &disasters in our community

asked by Identify one environmental factor that causes ill health & disasters in our community
71. ## algebra

One of the authors of this text is moderately active, weighs 87kg, is 185cm tall and is 59 yr old. what are his daily caloric needs?

72. ## math

Write an equation of the line parallel to the line given by 3x-2y=8 and having the same y- intercept as the line given by 2y+3x=-4

73. ## math

What is the projected population over a period of 340 years in a region which begins with three couples?

76. ## math

(12-8)(3x-5)(7x+29) = solve: show your work

77. ## algebra

short answer. find the following product -7z(-8z^3+3z^2+8)

78. ## algebra

Short answer. find the following product.(y^2-6y+8)(y+8)

79. ## math

write an equation of the line parallel to the line given by 3x-2y=8 and having the same y- intercept as the line given by 2y+3=-4

80. ## math

12-8 3x-5 7x+29 solve show all your work

81. ## Amortized Loan

What is the interest payment on $16,000 at 5% interest amortized over 16 months with$1,000 payment per month

82. ## Literature

Where can I get study questions for the story Julie of the Wolves?

2. Reah filed a case against her employer who dismissed her from service for reporting to work under the influence of alcohol. Which of these would be valid reason to contest the dismissal? a.)Reah's employer had not listed reporting to work after

84. ## algebra

find the following product:(x-3)(x+3)

85. ## Chemistry

I wont to get concentartion by using A weight of chemical material and chemical formula.

86. ## intermediate algebra

Short Answer. the length of the side of a rectangular desk is given by 2x-6ycm. the length of the front is given by 2x+6ycm. what is an algebraic expression for the area of the top of the rectangular desk? include correct units as part of your answer.

87. ## math

a/26-5.5+2a=9/13+20a/13+4/13

88. ## Statistics

for 95 out 0f 100 of the same size, a 95% confidence interval of a parameter will include the thrue value of that parameter

89. ## physics

A race car is able to accelerate at a rate of 14m/s2. After exiting a turn at a speed of 15m/s, the car enters a straightaway and accelerates to a speed of 96m/s just as it reaches the end of the straightaway and enters the next turn. A)how long did it

90. ## english

define this proverb "Hooks are every thing"

91. ## algebra

Short answer. find the following product. -7z(-8z^3+3z^2+8)

92. ## english

In the morning, thousands of birds appeared.

93. ## English

Correctly identifying the part of sppeech of each of the words in the sentences. Example: The boy hit the ball. The (definte article) boy (subject) hit (past tense verb) the definite article) ball (direct object). 1. Mother gave me a card for my birthday.

94. ## mechanics

what is the kinetic energy of an object that has a mass of 20nkilograms and a speed of 2.8 m/s

95. ## physics

A man in manhattan is told that his destination is 26 blocks east at 30 degree angle uptown from where he stood on houston street determine how many blocks east and how many blocks uptown from where he stood.

Construct a truth table for the statement. (p ↔ q) → p

97. ## algebra

find the following product: 5x^2y(-4x^5y^4)

98. ## Math

what is \$16,000 at 5% interest amortized over 16 months

99. ## Math

Construct a truth table for the statement. (p ↔ q) → p

100. ## Diatomic Molecules?!

Why do diatomic molecules form?!! :((

101. ## algebra

find the following product: 5x^2y(-4x^5y^4)

102. ## math

solve using add. method 4x=-6+5y 8x+4y=-3

103. ## psychology

Why would it be helpful if everyone learned something about childhood development?

104. ## math

solve: 4+8 1/2 -:- (1/4) to the third power. solve -11-(x+30)=-41-2 (5x-18) please show your work

105. ## arithmetic

is my answer right? Q) Using a frame rate of 25 fps, what frame number will AviSynth give to the final frame of a 6-second video clip? A. 25*6=150

106. ## math

4(x-5)-5=6x+7.4-4x

A cookie company's management wants to increase the number of employees belonging to minority groups.They implement a policy determining that a fixed percentage of recruits should be members of groups Which legal constraint is breached by this decision?.A)

108. ## english

I needed to change my thesis statement(last sentence). It was too long. Please review. Imagine being 6’3” in the eighth grade and everyone in the school making comments about your height. There are definitely advantages and disadvantages to being tall.

109. ## Language art

What is a group of people at a dance with letters bssmyale

110. ## AP CHEM

Comparing the Noble Gases to the Alkaline Metals, what are major similarities and major difference between the two?

111. ## Geometry

find m_DCB, given angles A and F are congruent, angles B and E are congruent, and m_CDE=26

112. ## math

2,500(1.65)^12=

113. ## algebra

short answer. find the following quotient: x^2-36 ------ x+6

114. ## criminal similation

what is criminal similation

115. ## math

If i put 2,500 in a bank account with 6.5% interest rate 12 years ago,how much will be in the account now?

116. ## math

2,500(1.0650)^12=

4(x-5)+2+x=3