# Questions Asked onJuly 25, 2012

1. ## chemistry

When the conductivity is at a minimum, what must be true about the amount of Ba(OH)2 compared to H2SO4? The Ba(OH)2 dissociates as Ba+2 + 2 OH-. H2SO4 dissociates as 2 H+ + SO4-2. Why does it not conduct at this low point? Why does it conduct more before

2. ## Geometry

The diagonals of an isosceles trapezoid divided it into one pair of congruent triangles and one pair of similar triangles.

3. ## Physics - Electromagnetism

This is the last question for a final exam preparation sheet and I can't figure out the answer. Any help would be greatly appreciated. Thank you. - One very long wire carries current 10.0 A to the left along the x axis. A second very long wire carries

4. ## design

1. Because they’re closer to the body than nightgowns, pajamas for children are considered to be A. less of a fire hazard than nightgowns. B. safer when stitched with cotton thread. C. very dangerous in brushed nylon fabric. D. extremely flammable in any

5. ## Physics

A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00- kg block rests is frictionless. A constant horizontal force of

6. ## physics

A uniform electric field is directed upward and has a magnitude of 5 N/C. What are the magnitude and direction of the force on a charge of -3 C placed in this field? F=Eq E=5 q=-3 5(-3)=-15N Downward Ok I have the downward correct the -15 is incorrect. Did

7. ## design

1. For which figure type are the lines of this gown most flattering? A. Tall.( yes) B. Short or plump C. Thin D. Average 2. For which figure type are the lines of this dress most helpful? A. Tall B. Short or plump C. Thin D. Average.(yes) 3. Which detail

8. ## Physics

A 12.0 kg block sits on a frictionless table. On top of this block is placed a 5.00 kg block. The coefficient of static friction between the two blocks is 0.70. a) What is the maximum force that can be applied horizontally to the 5.00 kg block before it

9. ## writing skills 1

1.How are the ideas in the following two sentences tied together? The best time I had all summer was the night of Sherry's party.The worst was the nexy day. A.sentences closely conneceted in meaning B.word pointers C.no connective D.a connective my answer

10. ## statistics

1. How do the 3rd grade boys’ weight in Principal Ben’s school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis

11. ## automotive repair

19. In a cylinder block, the opening that the valve head rests in is called the valve A. margin. C. stem. B. seat. D. guide.

12. ## literature

Chief Seattle contrasts the religions of the whites and of his people by saying the Native American religion exists "in the hearts of the people" while the religion of the writers is written on tablets of stone by A.Moses B.angry God C.seekers after truth

13. ## geometry

Find the volume of a rectangular solid with the following dimensions: 2√3 cm x 7√5 cm x 4√6 cm.

14. ## Introduction to HS

I am having trouble with a question. In order to get an idea of significant subject areas in a chapter, it is best to read the. A. Subheads B. Graphics C. Captions D. Table of contents In my study guide it states : Read all the subheadings and

15. ## chemistry

I need to write a balanced equation and indicate the type of reaction phosphoric acid + magnesium hydroxide= magnesium phosphate+ water

16. ## drama(lit)

1. In his comedies, Shakespeare is well known for A.the device of mistaken identity B.fatally flawed characters C.revealing great heroes as common fools D.an unusual use of Middle English 2.Prior to the Renaissance, the human bosy was seen as A.proof that

17. ## Physics

Mass 1 and mass 2 are connected as shown by a massless, non-stretch rope that passes over a massless, frictionless pulley. The masses are on inclines which have friction. When the angles of the string are as given, mass 1 experiences an acceleration up the

18. ## physics

A wire has a resistance of 27.2 ohms. It is melted down, and from the same volume of metal a new wire is made that is 3 times longer than the original wire. What is the resistance of the new wire? Resistance and length of wire are proportional, but what I

Sitting in a chairlift, Rebecca has a gravitational potential energy of 5,997.6 J. If Rebecca has a mass of 51 kg, how high off the ground is the lift? A. 6 m B. 12 m C. 118 m D. 612 m

20. ## Math

Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. A car rental agency charges \$250 per week plus \$0.25 per mile to rent a car. How many miles can you travel in one week for \$450

21. ## anatomy

what is peritonitis and why is it common for men not in women

22. ## Pre-Calculus

is f(x)=9x^(5/3) a power function?

23. ## Math

the function KE(v)=(1/2)kv^5 , given that k is a constant,is an example of a power function?

24. ## Math

synthetic division and the factor theorm indicate that x-3 is a factor of x^3-x^2-x-15.... true or false?

25. ## Physics

A U-tube contains two fluids with densities ρ1 = 1070 kg/m3 and ρ2 = 595 kg/m3 as sketched below. What is the difference d in the heights of the top surfaces of the two fluids?

26. ## Biochemistry

In naming polypeptides, if asparagine is the second peptide from the N terminal, would it be named asparagyl? Would aspartate be aspartyl if it is the second peptide from the N terminal of a polypeptide?

27. ## Physics

Two metal blocks are attached by a cable as shown in the figure below and are submerged at rest near the surface of a lake. If the volumes are V1 = 2.1 m3 and V2 = 1.1 m3, what is the total buoyant force on the two blocks?

28. ## physics

In a hydraulic piston set up, one circular piston has a diameter of 2 cm,while the other piston has a diameter of 6cm. Calculate the ratio of the force exerted by the larger piston to the force applied to the smaller piston?

29. ## calculus

can someone please explain why the answer to this is negative infinity? I keep getting positive. lim x--> - infinity x^3-2/x^2+x

30. ## Physics

What mass of ice at 0 oC must you add to 0.5 kg of water at 22 oC to bring the final temperature of the water to 5 oC? (cice = cvapor = 0.5 cliq , cliq = 1 cal/(g oC), hfusion = 80 cal/g, hvaporiztion = 540 cal/g) A. 5.9 B.71 C 100 D106 E1.7

31. ## Physics

PLEASE ANSWER ASAP!!!!!!!!!! step by step a) find the acceleration experienced by the driver of a car traveling at 50km/h if the car hits a pole and crumples 50cm. b) repeat part a) for a car traveling 100km/h

32. ## use chebyshev's theorem to find what percent of th

use chebyshev's theorem to find what percent of the values will fall between 241 and 349 for a data set with a mean of 295 and standard deviation of 18

33. ## Physics

PLEASE ANSWER ASAP!!!!!!!!!! step by step a) find the acceleration experienced by the driver of a car traveling at 50km/h if the car hits a pole and crumples 50cm. b) repeat part a) for a car traveling 100km/h

34. ## use chebyshev's theorem to find what percent of th

use chebyshev's theorem to find what percent of the values will fall between 241 and 349 for a data set with a mean of 295 and standard deviation of 18

35. ## geometry

how do you find the perimeter of a triangle, longest side is 48cm, line down the middle is 8 and the sides are both 10.

36. ## chemistry

if the solute is MgSO4 and it is disolved in 800g water water are the ideal melting and boiling pionts of the solution?

37. ## arithmetic

Three men are working together can finish a house repair job in 10 days. How many days will 5 men working at the same rate finish the same job?

38. ## English 3

Identify the gerund phrase and its noun use. The little boy left home without telling his mother Gerund phrase: left home without telling Noun use: direct objest am i right

39. ## English 3

Identify the italicized phrase. Charmed by her gracious manner, the producer offered her a contract. A. Participle B. Gerund C. Infinitive D. Appositive

40. ## algebra

Complete the factoring. 3x^3+9x^2+6x

Expand or reduce ? Mandy has a study for contracts at \$50,000, of which %7,000 is variable cost of supplies. She is currently charging \$20 per test She is thinking of lowering her price by 20% in hopes of rasiign current vol. of 10,000 tests by 15%. If she

42. ## Calculus

Find the area bounded by y= -0.5x+6, y= !/4 x and the y-axis. Sketch a graph of the two functions and shade in the area.

43. ## ME ENG

Hello. I need to prepare 1 liter of a buffer of 0.1M , pH=6.0. (Acid =HCl, base=Sodium tetraborate) I have in the lab: 320331 Sigma-Aldrich hydrochloric acid ACS reagent, 37% . and 221732 Sigma-Aldrich Sodium Tetraborate (Molecular Weight : 201.22 g/mol).

44. ## Physics

A heavy concrete panel is being lifted into position in a building by means of a crane (see figure below). The tension of 2.52 104 N in the supporting cable produces a torque with respect to point O. (Let L = 41.0 m.) (a) Does this torque tend to rotate

45. ## math

how to solve 20-1/5d=3/10d+16

46. ## math

A tower casts a shadow 22 feet long. If the angle of depression lookig down from the top of the tower to the tip of the shadow is 14 degrees, what is the height of the tower

47. ## ecnomic

Due to an increase in her rent, Isa needs to cut back her spending on other items. Which of the following types of goods will Isa consume less of?

48. ## Physics

A car with a mass of 1500 kg moves at 26 m/s. What braking force is needed to bring the car to a halt in 10 s?

49. ## health

good dental hygiene for young children is most dependent upon 6 month check ups, toothpaste with flouride, proper tooth brushing

50. ## com 200

Kyle has struggled to feel comfortable in science classes with labs since his junior year of high school, when a solution he was working with ignited. He was always cautious with chemicals but his lab partner that year enjoyed seeing what would happen when

51. ## english

Redarding the difference between fiction and nonfiction, which statement is most accurate A.writers of non fiction have no need to express passionate opinion B.nonfiction writers are more often free to move about in time and space C.nonfiction writers are

52. ## pH preparation

Hello. I need to prepare 1 liter of a buffer of 0.1M , pH=6.0. (Acid =HCl, base=Sodium tetraborate) I have in the lab: 320331 Sigma-Aldrich hydrochloric acid ACS reagent, 37% . and 221732 Sigma-Aldrich Sodium Tetraborate (Molecular Weight : 201.22 g/mol).

53. ## English help

Question 1 Marks: 1 A common theme that runs through all the sections of Song of Myself is Whitman's own — Choose one answer. a. belief in his power as a poet b. love of solitude c. inability to trust people d. failure to change the world Question 2

54. ## biochemistry

You have a 100 mMoles of A in the 10 ml reaction mixture which contains buffer and enzyme. The reaction is allowed to reach equilibrium at 25 o C and you measure the concentration of B as 10 mM. What is the delta Go' for the reaction in KJ.

55. ## science

The solubility of sodium chloride is 36.0 g/100. ml of water, and the density of saturated NaCl solution is 1.202 g/mL.. I have 500. mL of a 1.00 M NaCl solution. If I boil it to the point of saturation, what is the final volume?

56. ## early childhood education

typically when paired with a boy in a laboratory play session a two year old girl os likely to

57. ## Law/421

If a zoo houses a venomous snake and the snake escapes its confines leaving the zoo and gets into a neighbors yard striking a young child. Should the zoo be considered negligent or should the zoo be considered strictly liable . Why or why not?

58. ## Algebra

The bicyclists were 300 miles apart at 3 p.m. and were headed toward each other. If they met at 9 p.m. and one was traveling 20 mph faster than the other, what was the speed of each bicyclist? So far these are the equations I have gotten: Distance1 +

59. ## statistics

DOES ANYONE EVEN ANSWER THESE HOMEWORK CHECKS?I have posted 3 or 4 Q/A and no one answers---any other sites better???

60. ## physical science

A train sounding its horn is approaching an observer. The pitch of the horn's sound relative to its normal pitch is???

61. ## Sociology

Observation Setting: What would be some ethical issues/problems when observing a public setting like a restaurant? Thanks

62. ## world literature

In the story" the Background" the type of humor the authors uses is satire. The satire is aimed at two targets: the government and art critics. Choose one of these targets and explain how satire is used to make fun of it. Use examples from the story to

63. ## science

To calculate the area of the front surface of a box you?

64. ## world literature

in the story "the night the ghost got in" Downstairs , we could hear the tromping of the other police. Police were all over the place; doors were yanked open , drawers were yanked open, windows were shot up and pulled sown, furniture feel with dull thumps.

65. ## world literature

Ther are several ways to learn about characters: through their appearance, actions, speech, thoughts, feelings, and descriptions by other characters. Take one character from " the night the ghost got in" and give two different examples of characterization.

66. ## Algebra 2

Find the product of (6+3i) (4-2i).

how many copies of a book is being sold on harpercollins & Random House since they're one of the world's must biggest publishers I'm curious I know the average of publishing is 500-1000

68. ## Physics

A box starting from rest, slides down an incline which makes an angle of θ above the horizontal. The incline has a maximum height of h above the platform on which it sits which is itself H above the ground. The box leaves the end of the ramp and

69. ## Statistics

write a paper that involves designing, conducting, and analyzing results from your own experiment to test the sensory discrimination of one of your friends. Choose a friend who claims to be able to tell the difference between two very similar objects.

70. ## algebra 1

how do you know when the line crosses the y axis while doing y interept, slope

71. ## reiny

reiny why are you so smart thanks for aswering my question

72. ## Chem

What is the hydroxide ion concentration of a solution prepared by dissolving 0.488 g of Mg(OH)2 in 236 mL of water? How do I solve this???

73. ## Physics

A bucket is filled with a combination of water (density 1,000 kg/m3) and oil (density 700 kg/m3). These fluids do not mix. (The oil will float on top of the water.) If the layer of oil is 63 cm tall, what is the pressure at the interface between the oil

74. ## STATISTICS

2. Are the student final exam scores in classroom A significantly different than the average of classroom B, 80%? Provide the IV, DV, and best method of analysis. (Points : 6)

75. ## Physics

A syringe has an area of 1.4 cm2 at its barrel and then narrows down to an area of 0.08 mm2 at the needle end. If a force of 5.5 N is applied to the syringe, what is the force produced at the tip of the needle?

76. ## Physics

A block of mass 20 g sits at rest on a plate that is at the top of the fluid on one side of a U-tube as shown below. The U-tube contains two different fluids with densities ρ1 = 965 kg/m3 and ρ2 = 550 kg/m3 and has a cross sectional area A = 5.5 10-4 m2.

77. ## Physics

You want to design a helium-filled balloon that will lift a total payload of 1225 kg. What volume of helium is needed to just barely lift this payload?

78. ## Physics

Water is flowing through a pipe (area 4.0 cm2) that connects to a faucet adjusted to have an opening of 0.57 cm2. If the water is flowing at a speed of 5.3 m/s in the pipe, how long does it take for water from the faucet to fill a bucket of volume 0.11 m3?

79. ## Physics

A tank of water sits at the edge of a table of height 1.4 m. The tank springs a very small leak at its base, and water sprays out a distance of 1.2 m from the edge of the table. What is the water level h in the tank? (Assume the tank is open to the air at

80. ## Math

x^(2)-3x-6x+18 factor plz explain detail

81. ## math

Lane French had a bad credit rating and went to a local cash center. He took out a \$111 loan payable in five weeks at \$131.

82. ## Math

Sam measured the out side of his vegetable garden.The sides measured 6 feet, 3feet, 6feet, and 3 feet.How much fencing does sam need to put a fence around the whole garden?Show two different methods of finding the solution.

83. ## accounting

The following information was made available from the income statement and balance sheet of Lauren Company. Item 12/31/10 12/31/09 Accounts Receivable \$53,400 58,600 Accounts Payable 35,600 32,700 Merchandise Inventory 85,000 79,000 Sales (2010) 243,000

A 54 kg high jumper has a gravitational potential energy of 1,067 J at the height of his jump. How high did he jump? A. 1.2 m B. 2.0 m C. 3.2 m D. 4.1 m

85. ## Science

What is one way you could take action to reduce your carbon dioxide emissions?

86. ## Math (Algebra)

solve by factoring: 7y^2+12y+13=3y^2+4

87. ## commas

Training for the upcoming ten-mile marathon, Lizette includes more protein and complex carbohydrates in her diet.

88. ## English

How did ray bradburry motivates the main character in the story, the utterly perfect murder

89. ## algebra

Factor by grouping. 7z^2+21z-az-3a

90. ## algebra

Calculate. 7[6+(8)^3]

91. ## chemistry

When do phase transitions occur in molecules?

93. ## math

the outer distance of a bicycle wheel is 95cm how many complete turns does the wheel make when the bicycle travels a distance of 350m?

94. ## Mathematics

how do you calculate the time when average speed is given

95. ## Physics review

In this example, sound waves are created in a tube. The tube is partially filled with water and the level of water is adjusted in the tube until there is a standing wave. Draw the lowest frequency standing wave for the two water levels in the drawing. The

Consider the following set of data. (25, 6), (25, 51), (62, 34), (84, 15), (112, 57), (122, 14) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) 40.17 (b) Calculate the standard deviation of the six

A parent function generates a family of functions that are related to the parent by a combination of _____?

98. ## Integrated Math 1

A parent function generates a family of functions that are related to the parent by a combination of _____.

99. ## statistics

Given the sample mean of GPA, the sample SD, and the SE below: SM: 3.2454 SD: 0.4635 SE: 0.0309 constructa 95% confidence interval for the population mean gpa? my answer: 3.2454+0.0309 = 3.2763-0.0.0309=1.2454

I am catching up over summer on math units that I have to rewrite. In my textbook it asks me to find the base of two triangles and add them together. the smallest angle of the larger triangle is 30 degrees. The opposite side to the angle is 40cm. it gives

101. ## math30

Solve log2(x-1) = 5-log2(x+3) for x. base 2.

102. ## Physics

The work done by an electric force in moving a charge from point A to point B is 3.75 x 10^-3 J. The electric potential difference between the two points is VA - VB = 54.6 V. What is the charge? Not sure if I did this correctly: I believe this is an

103. ## science

A shoe case weighing 40 lb is located on a scale inside a moving elevator that is going upward with the speed of 8 m/s. At time T1 elevator slows down with the acceleration of 3 m/s2 until the time T2. What are the the readings of the scale at T2 and T1

104. ## chemistry

What is the electronic transition for LiCl using this equation 1/(7.01 ×〖10〗^(-7) )= R_H (1/4- 1/(n_f^2 ))

105. ## math

how many 7 digit telephone numbers can be made if every other digit is even

106. ## English

How did ray bradburry motivates the main character in the story, the utterly perfect murder

107. ## English help

1 Which of the following is NOT part of the process of synthesizing? a. finding main ideas b. finding supporting details c. determining a purpose d. comparing and contrasting ideas is it c?

108. ## chemistry

I need to wtite a balanced equation and indicate the type of reaction for these questions 1) ammonium nitrite= nitrogen+ water 2) ammonia+ oxygen = nitrogen (ii) oxide + water 3) barium chloirde + sodium sulfate= sodium chloride + barium sulfate 4)

109. ## English help

Question 1 Marks: 1 Davey has decided to research the history of fire engines in America. To get started he's written a list of research questions. Which of the following questions is the best research question for him to ask? a. Who holds the patent for

110. ## world literature

the story "My financial Career" (text pp. 336-378) and the "" the work of one day is gazed upon for one thousand days" ( text pp. 257-263 ) deal with the similar subject matter of finance and business; however, the tone is these stories differs. Contrast

111. ## World Literature

The story " The Simple Story of G. Washington " 1. type of narrator? 2. dialogue? 3. attitude toward the children? 4. does the narrator change? The Story " Kiddie Kar Travel" 1. type of narrator? 2. dialogue? 3. attitude toward the children? 4. does the

112. ## science

what are atoms

113. ## Mathematics

Please help exponent questions =[ If 2^x = 10, then 2^2x = If 2a^2 + 3a - 5a^2= 9, then a-a^2= If 9^x = 25, then 3^x+1 = If b^3=4 then b^6 If 2= p^3, then 8p must equal if 5 = a^x then 5/a =

114. ## Maths

A ladder is 12 metres and leans against a tall wall. The foot of the ladder is 9 metres from the base of the wall. How far up the wall will the ladder reach?

115. ## Physics

A 90.0 kg block and a 40.0 kg block are connected by a rope that passes through two (frictionless, massless) pulleys as shown. When released, what is the acceleration of the larger block? What is the tension in the rope?