# Questions Asked onSeptember 15, 2014

1. ## physics

You are driving to the grocery store at 20 m/s. You are 110 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.70 s and that your car brakes with constant acceleration. How far are you from the intersection when

2. ## Physics

An attacker at the base of a castle wall 3.95 m high throws a rock straight up with speed 5.00 m/s from a height of 1.50 m above the ground. (a) Will the rock reach the top of the wall? (b) If so, what is its speed at the top? If not, what initial speed

3. ## Science(Stuff to do like with magnets!)

1. A positively charged test object is moving toward the positive source charge in an electric field. What happens next??? A. its potential energy decreases. B. Its potential energy increases. C. Its potential energy stays the same. D. Its potential energy

4. ## Language Arts

3. Which statement best expresses a central theme of ''The Story Teller''? A. People with no children to care for are usually better at handling children. B. It is important to instruct children about right and wrong at all times. C. The best way for

5. ## Chemistry

1. Aluminum reacts with oxygen to produce aluminum oxide which can be used as an adsorbent, desiccant or catalyst for organic reactions. 4Al(s) + 3O2(g) → 2Al2O3(s) A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen (

6. ## Chemisty

a) Calculate the number of moles in 17.8 g of the antacid magnesium hydroxide, Mg(OH)2. b) A 0.850-mole sample of nitrous oxide, a gas used as an anesthetic by dentists, has a volume of 20.46 L at 123°C and 1.35 atm. What would be its volume at 468°C and

7. ## Language Arts

1. In ''The Story -Teller,'' the bachelor says that Bertha was ''horribly good.'' What do you think this term means? A. She is so good that she deserves three medals. B. She is horrible-looking but is very well behaved. C. Being good is a horrible quality.

8. ## physics

A helicopter weighs 3920 newtons, caculated the force on it if it is ascending up at a rate of 2m/s squre ,what wil b force on helicopter if it is moving up with the constant speed of 4m/s .

9. ## Chemistry

A laser produces 15.0mW of light. In 3.00hr , the laser emits 4.53×1020 photons. What is the wavelength of the laser?

10. ## World History--Please, help me! (Ms. Sue)

1. What were the major beliefs of Judaism and how did they influence Western culture? A: The major beliefs of Judaism were monotheism and righteousness. These Jewish beliefs became markers of the Western tradition: human beings are separate from nature and

11. ## math

Suppose someone gives you 8 to 2 odds that you can not roll two even numbers with the roll of two fair dice. This means you win $8 if you succeed and you lose$2 if you fail. What is the expected value of this game to you? Should you expect to win or lose

12. ## Chemistry

a) Ammonia, an important source of fixed nitrogen that can be metabolized by plants, is produced using the Haber process in which nitrogen and hydrogen combine. N2(g) + 3H2(g) → 2NH3(g) How many grams of nitrogen are needed to produce 325 grams of

13. ## chem

which nuclides would you expect to be stable? a) 48K b)79Br c)Argon-32

14. ## Math 221 Week3

A distribution center receives shipment of a product from three different factories in the quantities of 60, 35 and 25. Three times a product is selected at random, each time without replacement. Find the probability that (a) all three products came from

15. ## Calculus-Math

The ordering and transportation cost C for components used in a manufacturing process is approximated by the function below, where C is measured in thousands of dollars and x is the order size in hundreds. C(x) = 12((1/x)+((x)/(x+3))) (a) Verify that C(2)

16. ## Chemistry

An electron has an uncertainty in its position of 611pm. What is the uncertainty in its velocity?

17. ## English

Please check my answer. I'm not sure which is right because I'm pretty sure every father feels the need to do all of the below. Read the following sentence from "No Dogs Bark." "I'll get you to Tonaya. There I'll find somebody to take care of you. They say

18. ## Math 221 Week3

A probability experiment consists of rolling a 6 sided die. Find the probability of the event below: rolling a number less than 3? The probability is

19. ## Math

explain whether the following given are closed under addition: B={0, 1} T={0, 4, 8, 12, 16, ...} F={5, 6, 7, 8, 9, 10,...} {x|x E W and x>100}

20. ## Language Arts

2. Which event propels the action in ''The Story-Teller''? A. A woman is traveling with three children. B. The aunt invites Cyril to look out the window at the animals and fields they are passing. C. The man disagrees with the aunt's story, and she invites

Joan has a cafe. Each day she bakes 24 muffins. she gives away 3 and sell the rest. Each day, she also bakes 36 bagels. she gives away 4 and sells the rest. write an expression to represent the total number of muffins and bagels joan sells in 5 days.

22. ## chemistry

If 125 cal of heat is applied to a 60.0-g piece of copper at 23.0∘C , what will the final temperature be? The specific heat of copper is 0.0920 cal/(g⋅∘C) .

23. ## chemistry

Three solutions 56.0 mL of 0.2 M KNO3; 57.0 mL of 0.6 M Ca(NO3)2; and 57.0 mL of 0.325 M KCl were poured together to make one new solution. What is the concentration of Cl− after mixing?

24. ## statistics

5. A soft drink dispensing machine uses paper cups that hold a maximum of 12 ounces. The machine is set to dispense a mean of 10 ounces of the drink. The amount that is actually dispensed varies. It is normally distributed with a standard deviation of one

25. ## Social Studies

Politics most informs a person's actions in? A.civic life B. work life C. private life D. school life

26. ## Physics

A projectile is launched with an initial speed of 80.0m/s at an angle of 40 degrees above the horizontal. The projectile lands on a hillside 3.80s later. Neglect air friction. What is the projectile's velocity at the highest point of its trajectory? What

If the absolute value of a negative number is 2.78, what is the distance on the number line between the number and its absolute value? Explain your answer.

28. ## Organic Chemistry

Label each reactant according to it role or roles in the chemical reaction? Two different (OH-) + (HBr) ----> (HOH) + (Br-) (OH-) + (H3CBr) ----> (H3COH) +(Br-) Lewis base, bronsted base, nucleophile, lewis acid, bronsted acid, nucleophile

29. ## chemistry

kilojoules released when 80.0g of steam condenses at 100 ∘C and to cool the liquid and freeze it at 0 ∘C I used the formula for condensation/ evaporation( 80.0g(2260)1kJ/1000J=632.8) and then i used the formula for heat of

30. ## physics

⦁ A ball thrown horizontally at 25 m/s travels a horizontal distance of 50 m before hitting the ground. From what height was the ball thrown?

31. ## Statics

A former student of mechanics wishes to weigh himself but has access only to a scale A with capacity limited to 100 lbs and a small 24-lb spring dynamometer B. He discovers that when he exerts a pull on the rope so that B registers 22 lb, the scale A reads

32. ## accounting

Wallace Inc., a developer of radiology equipment, has stock outstanding as follows: 30,000 shares of cumulative preferred 2% stock, $90 par and 125,000 shares of$10 par common. During its first four years of operations, the following amounts were

33. ## World History Answer Check (Ms. Sue)

1. What is the Socratic method and what is its legacy? A: The Socratic Method is a form of inquiry and debate, usually via rhetorical questions, between two or more individuals of opposing perspectives that aims to stimulate critical thinking and either

34. ## Scientific Literacy

6) A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The

35. ## Chemistry

A 100-watt lightbulb radiates energy at a rate of 100 J/s (The watt, a unit of power, or energy over time, is defined as 1 J/s). If all of the light emitted has a wavelength of 500nm, how many photons are emitted per second? (Assume three significant

36. ## math

When this 3 digit number is rounded to the nearest hundred, it rounds to 300. The digit in the ones place is 4. The sum of the digits in the 3 digit number is 11. What is the number?

Wilkinson’s expedition was the first to report __________. A.a description of what life was like in Oklahoma B.the presence of oil in Oklahoma C.the discovery of the Red River headwaters D.an illustration of the Rocky Mountains I can't follow links, but

vidal bought 2 pizzas and cut each into 8 slices. he and his friends ate 10 slices. write an expression to match the words.

39. ## Math

Write a word problem using 9 and 10 as factors. Write an equation to solve the problem

40. ## physics

divers compete by diving into a 3.0m deep pool from a platform 10m above the water's surface. what is the magnitude of the minimum acceleration in the water needed to keep a diver from hitting the bottoms of the pool?assume the acceleration is constant.

Find all the zeros of the function. (Enter your answers as a comma-separated list.) f(x) = (x + 3)(x − 7)2 X=

42. ## Physical Science

Why does a glass filled with a cold beverage seem to sweat? a. saturation always results in sweat on wet object. b. the cold glass adjacent air to saturation, which is followed by condensation of water vapor. c. when cold, water molecules can move through

43. ## Social Studies

which of these actions would most help a worker improve her productivity? A. finding a new job in a different field. B. taking a training course related to her job. C. buying a laptop computer for home use D. asking her employer to give her a raise i think

44. ## Chemistry

How much heat will be released when 0.750 moles of carbon monoxide (CO) react in an excess of oxygen gas? 2CO(g) + O2(g) ¨ 2CO2(g) + 566 kJ

45. ## Science

The geologic time scale originally ordered earth's rocks by? a) Absolute age. b) Relative age. c) Composition. d) Decades and centuries.

46. ## World History Answer Check

1. What were the major beliefs of Judaism and how did they influence Western culture? A: The major beliefs of Judaism were monotheism and righteousness. These Jewish beliefs became markers of the Western tradition: human beings are separate from nature and

47. ## chemistry

which of the following is true regarding the inner transition elements? A. their valence electrons can be located in both s and f sublevels B. They occupy the d block of the periodic table C. These include the lanthanides and actinides and do not have f

48. ## Physics

An attacker at the base of a castle wall 3.95 m high throws a rock straight up with speed 5.00 m/s from a height of 1.50 m above the ground. (a) Will the rock reach the top of the wall? (b) If so, what is its speed at the top? If not, what initial speed

49. ## chemistry

Nickel is about 2 millimeter thick or 2/1000 of a meter.how many nanometer is this?

50. ## math

This is a floor plan of a building that is 8m tall. It has a flat roof. What is the surface area of the building including the roof. The floor plan is starting from the left the side is 18m the bottom is 27m the right side is 22m. The top looks weird

51. ## Chemistry

A proton in a linear accelerator has a de Broglie wavelength of 115pm. What is the speed of the proton?

52. ## calculus

Can you help me solve this problem? I really don't know what to do. I solve problems like for example the rate of change of the elevation but I just encountered this kind of problem so I really don't know what to do. Please help me The endpoints of a

53. ## geography

what are some differences between the equator and the prime meridian?

54. ## Analytical CHM

Calculate the theoretical amounts of 0.1000 M NaOH titrant used to titrate 0.8 and 0.9 g KHP Please show step by step solution , i need the correct significant figures and units to finish up the rest of the lab correctly i found the answer but for some

55. ## Social Studies

how are interest rates and wages similar? A. both rise due to inflation B. both are types of prices. C. both relate to the cost borrowing D. both are payment for work done i think B

56. ## Social Studies

Pete's peanuts wants to grow its overall prouctivity.which investment would best help the company achieve this goal? A. a larger building to store its peanuts. B. better advertiements for its products. C. new uniforms for company employees. D. an improved

57. ## algebra

A radiator contains 6 liters of a 25% antifreeze solution. How much should be drained and replaced with pure antifreeze to produce a 33% antifreeze solution?

58. ## History

According to the Adams-Onís treaty, Spain gave up claims to the __________ Territory. Texas?

59. ## Math

Two boats leave whitby harbour at the same time one boat heads 18 km to it's destination and the other boat heads 11 km to its destination. If the boats headed on a course 70 degrees apart, what is the distance between the boats ?

60. ## Physics

Stephanie serves a volleyball from a height of 0.78 m and gives it a initial velocity of +6.6 m/s straight up. (1): How high will the volleyball go? The acceleration of gravity is 9.81 m/s^2. (2): How long will it take the ball to reach its maximum height?

61. ## History

What accounts for the rather late emergence of African countries as independent nation-states? Is there something peculiar about Africa that delayed its drive for independence? (Begin with a specific African country and argue your case.)

62. ## science

2.750 g of copper(II) oxide, CuO2, was reduced by heating at high pressure with excess hydrogen to yield 2.196 g of copper Cu.

wilken owes rivera $2000. howie promises wilken that he wiol pay rivera the$2000 in return for wilken's promise to give howie's children guitar lessons. is rivera an intended beneficiary of the howie-wilken contract?

64. ## Pre Calculus

A motorboat travels 48 miles down a river in the same time it takes to travel 32 miles up the river. If the rate of the current is 4 miles per hour that is the rate of the boat still water?

65. ## physics

A tennis ball is struck and departs from the racket horizontally with a speed of 26.4 m/s. The ball hits the court at a horizontal distance of 18.4 from the racket. How far above the court is the tennis ball when it leaves the racket?

66. ## Math

If the absolute value of a negative number is 2.78, what is the distance on the number line between the number and its absolute value? Explain your answer. **I think it would be 2.78 because isn't the absolute value the distance from zero? So wouldn't it

67. ## Physics

You snap your fingers at the open end of a 1 meter long tube that is closed at the other end. With a microphone at the open end, you determine that it takes 5.8msec between the time you snap your fingers and the echo from the closed end is detected. Based

what is 5² / 5⁵ = ? other options are: a) 5¹ b) 5³ c) 5⁴ d) 5² **** Is 5² right?

69. ## algebra

A plane leaves Chicago headed for LA at 540 mph. One hour later, a second plane leaves LA headed for Chicago at 660 mph. If the air route from Chicago to LA is 1800 miles, how long will it take for the first plane to pass the second plane? How far from

70. ## college algebra

An executive invests $29,000, some at 8% and some at 4% annual interest. If he receives an annual return of$1,680, how much is invested at each rate?

71. ## Physics

An electron has an initial speed of 2.24 × 10^5 m/s. If it undergoes an acceleration of 2.2 × 10^14 m/s^2, how long will it take to reach a speed of 5.37 × 10^5 m/s

72. ## History

The journals collected from the Long-Bell expeditions revealed information about the geography, wildlife, and __________ of Oklahoma. precious metals?

73. ## chemistry

A hypothetical element has three main iso- topes with mass numbers of 81, 83, and 84. If 17.00% of the isotopes have a mass number of 81 amu and 35.00% of the isotopes have a mass of 83 amu, what atomic weight should be listed on the periodic table for

74. ## Social Studies

I am doing the 5th grade final lesson for Unit 1 on Social Studies, and i would like to know if there are any main points i should focus on in the printing press,Internet, or computer.

75. ## Science

How should the solution of the (Fe(H2O)5(SCN)2+ complex be disposed of?

76. ## Math

Lola is placing appetizers on plates She has 63 spring rolls and 84 cheese cubes She wants to include both appetizers on each plate Each plate must have the same number of spring rolls and cheese cubes. What is the greatest number of plates she can make

77. ## English

What is the relationship between literature and place in these narratives "from A Journey Through Texas" and "form of Plymouth plantation"

78. ## Intro to chemistry

a salt solution has a density of 1.15 g/mL and a volume of 0.425L. what is the mass in kg of this solution? I just need to know how to do it period

79. ## algibra1

One side of the triangle is twice as long as the second side. The remaining side is 4cm greater than the second side. The perimeter of the triangle is 24cm.Find the length of each side of the triangle.

80. ## World History Answer Check (Ms. Sue)

1. What were the major beliefs of Judaism and how did they influence Western culture? A: The major beliefs of Judaism were monotheism and righteousness. These Jewish beliefs became markers of the Western tradition: human beings are separate from nature and

81. ## Settlement

One goal the French and Spanish colonists had in common in the New World was Answer developing the fur trade. establishing stable governments. converting the Native Americans. searching for gold and other precious metals.

82. ## Pre-Algebra

A recipe asks for 1 1/2 cups of chocolate chips for 60 cookies. How many cups would be needed for 36 cookies?

83. ## computer science

Which of the following is a type of software program used to write code and develop other programs. A: a command line interpreter B: the turtle graphics window C: an operating system D: an integrated development environment Please help asap!

84. ## math

a living room measure 450 x 330cm. find the dimension of the largest square tile that can be used to tile the floor without cutting

85. ## Statistics

Are my answers correct? Thanks! 1.) Based on a survey of a few thousand people, a newspaper reporter wants to draw conclusions about how a country’s citizens in general feel about the war in Iraq. At this point, is the reporter mainly concerned with data

86. ## geometry

if there are twelve turtles in the pet store, what is the probability that a turtle chosen at random will weigh more than the median turtle weight?

87. ## Physics

A motor scooter rounds a curve on the highway at a constant speed of 25.0 m/s. The original direction of the scooter was due east; after rounding the curve the scooter is heading 28 degrees north of east. The radius of curvature of the road at the location

88. ## Physics

a 5 kg bucket is lowered by a rope in which there is 30 N of tension. What is the acceleration of the bucket?

89. ## Organic Chemistry

Consider the resonance structures for the carbonate ion. O--C-O(-) l O(-) (-)O-C--O l O(-) (-)O-C-O(-) l l O How much negative charge is on each oxygen of the carbonate ion? A)0, B) -.33, C)-.50, D) -.67, E)-1.00, F)-1.33, G)-1.50, H)-1.67, I)-2.00 What is

90. ## algebra

A triangle has a perimeter of 161 miles. The length of each of the two shorter sides of the triangle is two thirds the length of the longest side. Find the length of each side of the triangle.

91. ## Math

There are 8 plates. Jamie puts 9 strawberries on each plate. How many strawberries are on the plate?

92. ## History

What were some of the biggest/hardest challenges faced by Zebulon Pike and James Wilkinson? Thanks, I do not know and cannot really follow links due to parental restrictions.

93. ## chemistry

What type of reaction does the following equation represent? AgNO3 + NaCl ---> AgCl + NaNO3 A. Single-displacement reaction B. Synthesis C. Combustion D. Double-displacement reaction

94. ## Social Studies

how are interest rates and wages similar? A. both rise due to inflation B. both are types of prices. C. both relate to the cost borrowing D. both are payment for work done i think B

95. ## history

The established church in the Southern colonies was? the Anglican Church right? The most important cash crop in colonial Virginia was? tobacco right? Roger Williams believed wholeheartedly in A. extermination of all Native Americans B. complete separation

96. ## chemistry

how much copper sulphate will require saturating 80 grams of water at 20 degree celcious .if solubility of copper sulphate at 20degree celcious is 25?

97. ## Art

In the image, Green Wheat Fields, Auvers by Vincent van Gogh, which of the following elements was not used to create the principle of harmony? A. Colors B. Form C. Line D. Texture Is the answer B?

98. ## chemistry

Please identify the acid and the base in this equation. HClO + NaOH = NaClO + H2O Thank you!

99. ## World History (Ms. Sue)

What were the major beliefs or Judaism and how did they influence Western culture?

100. ## Physics

A high fountain of water is located at the center of a circular pool as in Figure P1.41. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 34.0 m. Next, the student stands at the edge of the pool and uses

101. ## math

You fire your potato gun horizontally from shoulder height, which is 190 cm above the ground. The potato strikes the ground 30 m away from you. What was the initial speed of the potato?

112. ## Psychology

Carrie is a fifth grader at Gorrie Elementary school—a school near an affluent neighborhood in a suburb of a major city. Carrie, who lives with her divorced mother—a high school dropout with a steady job as a minimum wage housekeeper—seems to have

113. ## physics

⦁ A criminal is trying to escape across a rooftop and runs off the roof horizontally at a speed of 4.9 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the

Thanks for checking 1.D 2.C 3.B 4.C 5.C 1.According to "Michael Faraday's World," which intrigued Michael Faraday? A.automobiles B.airplanes C.photography D.batteries 2.How are the operating room in the Williams story and the atom-splitting lab in the

115. ## Math

The speed of the current in a stream is 4 mi/hr. It takes a canoeist 96 minutes longer to paddle 13 miles upstream than to paddle the same distance downstream. What is the canoeist's rate in still water?

116. ## Chem

41. How much heat energy must you use to raise the temperature of 100 grams of water from 60C to 70C. Show your calculations. 42. You have a pot of 100C liquid water. If you add heat to the water, will the temperature start to raise at once? why or why

117. ## Math

Janelle won 27 tickets at the fair. She traded the tickets in for 9 prizes. each prize was worth the same number of tickets. How many tickets was each prize worth?

130. ## physics

What is the ball's rebound speed on its first bounce?

149. ## Economics

Country A is producing 4 units of X and 8 units of Y and country B is producing 4 units of X and 6 units of Y. The opportunity cost of producing more of A) good X is the same for both countries. B) good Y is the same for both countries. C) good X is lower

150. ## Maths

What point is the apex of a bridge?

221. ## Algebra

What is the solution to the proportion? 4/12=10/x x = 3 x = 3.3 x = 4.8 x = 30

222. ## Organich Lab Help Please!!!!!!!!

a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is

223. ## Math

Find the other endpoint given the first endpoint and the midpoint A = (3, 5) B = (5, -11) find C

225. ## English

What is the subject and subject complements of this sentence "Lack of water and wood remained a problem for Europeans." Is it lack and problem

226. ## Statistics

A class consists of 9 students with an average age of 40. When the Instructor arrives the average age of the students and the Instructor is 41. What is the age of the Instructor?

227. ## History

Which three empires competed for influence in the Balkans? 1. Austria-Hungary 2. Russia 3. ?

228. ## life orintation

identify one environmental or human factor that causes ill health or accidents or disasters within a community

254. ## math, algebra

If a and b are integers when is 1/ab positive? Please help me, I don't know what to do.

255. ## Pre-Calculus/Trigonometry

Help please What is the slope of the line that passes through (1,0) and is parallel to y = 3x + 5?

256. ## World history help

What does the juror token tell us about Greeks justice system? Need help ASAP!!!

257. ## French

How do I say I want to interact with you informally in French?

Can you check the following? 1. A recipe for muffins needs 1/2 cup of milk. You are making 3/4 of the recipe. How much milk do you need? Ans: (1/2) / (3/4) = (1/2) x (4/3) = 2/3 cups 2. Betty is running on a track that is 2/3 of a mile long. So far she has

259. ## Math

How can multiples and factors relate?

260. ## French

How do you say which country are you from in French informally?

261. ## xxx

If ( cos ᶿ + sin ᶿ)= ã2 cos ᶿ, show that (cos ᶿ-sin ᶿ) = ã2sin ᶿ

262. ## Physics

Reed has $6.20 in nickels and quarters. If the nickels were quarters and the quarters were nickels, he would have$3.50 more. How many quarters does Reed have?