# susan

Questions and responses by susan, page 3
1. ## Microeconomics

What keeps oligopolies from becoming a monopoly? Why don't the firms join to dominate the market? I know what oligopolies means: There are three conditions in a oligolopolistic market place. There has only a few large dominant firms. Market has high

2. ## Chemistry

The Label on a one pint bottle of water lists the following components. If the density is the same as pure water and you drink 3 bottles of water in one day, how many milligrams of each component will you obtain? 1) calcium 29 ppm 2)fluoride .09 ppm

3. ## Physics

The hydrogen atom contains a proton, mass 1.67 10-27 kg, and an electron, mass 9.11 10-31 kg. The average distance between them is 5.3 10-11 m. The charge of the proton is the same size, opposite sign of the electron. a)What is the magnitude of the average

4. ## Multivariable calculus

Hello, I have the next exercise about chain rule in multivariable calculus: I have to show that the differential equation: y(dz/dx)-x(dz/dy) = (y-x)z can be change to the equation: (dw/dv) = 0 using the new variables: u= (x^2)+(y^2) v = (1/x)+(1/y) w =

5. ## math

A true-false test consists of 15 items. (a) If Chris does not study at all and guesses each and every item in the test, describe the probability model for the number of correct guesses. (b) What is the probability that Chris gets 80% or more for the test?

6. ## Technology in the classroom

What is the ideal computer arrangement to use when you want to integrate computers directly into the classroom curriculum? A. One computer located in each classroom B. One computer that's shared among several classes C. A central computer lab, with one

7. ## Math

A 6 m ladder is leaning against the wall of a house. The angle between the ladder and the ground is 68 degrees. How far away is the ladder from the wall.? How high up the house does the ladder reach ? Give your answers accurate to two decimal places.

8. ## Chemistry

What volume of .225 M aluminum chloride solution contains 5.0 g solute?

9. ## Chemistry

Calculate the number of millilitres of NH3(aq) solution (d = 0.986 g/ mL) contain 2.5 % by weight NH3 which will be required to precipitate iron as Fe(OH)3 in a 0.8 g sample that contains 50 % Fe2O3.

Joyce took out a loan for \$ 21,900 at 12 percent on March 18, 2007. Which will be due on Jan 9, 2008. Use ordinary interest, Joyce will pay back on Jan 9 a total amount.

11. ## physics

A semi-trailer is coasting downhill along a mountain highway when its brakes fail. The driver pulls onto a runaway truck ramp that is inclined at an angle of 17.0° above the horizontal. The semi-trailer coasts to a stop after traveling 110 m along the

12. ## chemistry

human body is 255 square inches what is the total weight of the atmosphere on a human body expressesd in pounds

13. ## physics

Two satellites are in orbit around Mars with the same orbital radius. Satellite 2 has twice the mass of satellite 1. What is the centripetal acceleration of satellite?

14. ## college chemistry

I need to understand how to make a net ionic equation using the following elements: Sr++, Hg2, NaCl Or these: NH4, Ca++, K2SO4 I was not given the products of the reactions.

15. ## physics

which is more work pushing with 115N over 15 m or lifting 20N 10meters

17. ## word problem!!! algebra

at noon, a cargo van crosses an intersection at 30 mph. At 12:30 pm, a car crosses the same intersection traveling in the opposite direction. At 1 pm, the van and car are 54 miles apart. How fast is the car traveling? I know the answer is 48 mph, but can

18. ## Social Studies

How did the location of Constantinople help it grow wealthy and prosperous?

19. ## Accounting

Based on the current economic situation, what economic factors should the company analyse to improve its sustainability in the marketplace?

20. ## math - factoring

I'm having some trouble factoring a problem. It's 75x^2 - 27 I know I can first factor out a GCF of 3 which leaves me with 3(25x^2 - 9) This seems to me to be a differences of squares but I cannot figure out what to do next. Thank you.

21. ## math

Write 523,582,900,000 in scientific form Is it 5.235829 x 10^-11? Thank you.

22. ## Grammar

What part of speech is love in this sentence " I love playing in the rain"

23. ## Math

For what whole number values of length and width will the rectangle have an area of 60 square yards and I'm perimeter of 38 yards?

24. ## Math

A 6 m ladder is leaning against the wall of a house The angle between the ladder and the ground Is 60 degrees . How far away is the ladder from the wall? How high up the house does the ladder reach? Give your answers accurate to two decimal places

25. ## Statistics

The time to fly between New York City and Chicago is normally distributed with a mean of 180 minutes and a standard deviation of 17 minutes. What is the probability that a flight is more than 200 minutes?

26. ## Geometry

The surface of a cube is painted red and blue, 3 sides of each. The cube is cut into 27 equal sized smaller cubes. Find both answers to the question, "How many cubes have at least 2 sides painted blue?" and "How many cubes have at least 1 side painted

27. ## Chemistry

1. calculate the volume of concentrated HNO3 (68%)that is needed to prepare stock solution 0.25M in 1000mL volumetric flask. (density HNO3 = 1.513 g/cm^3) 2. from above stock solution, determine volume needed to dilute to 500mL volumetric flask that

Janet Home went to Citizens Bank. She borrowed \$7,000 at a rate of 8 percent. The date of the loan was Sept 20. Janet hoped to repay the loan on Jan.20. Assuming the loan is based on ordinary interest, Janet will pay back interest on Jan.20 is?

29. ## pysics

A home run just clears a fence 105m from home plate. The fence is 4.00m higher than the height at which the batter struck the ball, and the ball left the bat at a 31.0 degree angle above the horizontal. At what speed did the ball leave the bat?

30. ## child day care mangement

developmentally appropriate practices are based upon knowledge of

31. ## Algebra 1A Word Problem

Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

32. ## organic chemistry

i'm having trouble figuring out my unknown compound. The elemental analysis is 87.28%carbon and 12.72% hydrogen for my unknown liquid, and for my solid unknown the elemental analysis is 79.22% carbon and 5.7% hydrogen and 15.98% oxygen. I'm not able to

33. ## Finance

Open-end Fund A has 100 shares of ATT valued at \$100 each and 50 shares of Toro valued at \$50 each. Closed-end Fund B has 75 shares of ATT and 100 shares of Toro. Both funds have 100 shares outstanding a. What is the NAV of each fund using these prices? b.

34. ## literature

can someone please help me to give me summary and study material for the poem Silver by Walter de la mare?

35. ## Physics

A convex mirror has a focal length of -18 cm. How far behind the mirror does the image of a person 3.0 m away appear? The answer must be in cm. The equation to use woulde be: 1/f = 1/do + 1/di do = 300 cm f = would it be -18 cm or 18 cm???

36. ## English

Sound Words. The___ of broken glass followed the ____ of the bullet as the rifle____ .The soldiers were awakened by the _____ of the bugle.

37. ## Science

if one cup has a larger volume of water in it than a second cup, which would you expect to have a larger amount of dissolved oxygen (or would it be equal for both)? I would expect more water to dissolve more oxygen. More water dissolves more salt, more

38. ## Math

24tenths - 1one 3 tenths

39. ## math

You roll a die. If an odd number comes up, you lose. If you get a 6, you win \$54. If it is an even number other than 6, you get to roll again. If you get a 6 the second time, you win \$18. If not, you lose. (a) Construct a probability model for the amount

40. ## Math

Write an expression for this statement: Double 5, then add 63. I don't understand double 5. Does it mean 5 to the 2nd power or 5 +5?

41. ## History

I need a campaign poster for populist party

42. ## Math

An airplane is at an altitude of 10 km. You spot the airplane at an angle of 55 degrees . How far away Is the airplane directly from you? Give your answer to the nearest kilometre.

43. ## sociology

what are subtopics for education

44. ## Maths

Bag A contains 2 white, 1 black and 3 red balls, Bag B contains 3 white, 2 black and 4 red balls and Bag C contains 4 white, 3 black and 2 red balls. One Bag is chosen at random and 2 balls are drawn at random from that Bag. Of the randomly drawn balls

45. ## Chemistry

2NaOH + CuSO4 = Na2SO4 + Cu(OH)2 100g of Cu(OH)2 is needed. Assuming 100% yield, how much of 1M NaOH and 0.5M CuSO4 must be used in mL? Any help would be awesome- even a formula on how to solve

46. ## chemistry

Unsure how to solve this without a formula... I think its combustion analysis? CxHy + O2 --> CO2 + H20 CxHY has a MW=78g/mol. 100g of CxHy yields 338g CO2 and 138g of H2O. What is the formula CxHY (what are x and y)? Balance the reaction equation. Any help

47. ## finance

Suppose a zero-coupon bond is selling for \$614.00 today. It promises to pay \$1,000 in exactly 10 years with annual compounding. What is the firm’s after-tax cost of debt if this is its sole debt outstanding (assuming the firm is in the 20% tax bracket)?

48. ## college physics

a bus that is traveling at 30.0km/h speeds up at a constant rate of 3.5m/s2. what velocity does it reach 6.8s later?

50. ## IPS

why do glass bottles containing carbonated drinks sometimes explode when left in the sun for too long?

51. ## Physics

A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s^2 for 20 m . It then proceeds at constant speed for 110m before slowing down at 2.2 m/s^2 until it stops at the station.

52. ## physics

Tom & !@#\$%^& are 25 m apart at rest. Tom accelerates at 5 m/s/s towards !@#\$%^&. 0.21 sec later !@#\$%^& accelerates 6 m/s/s towards Tom. Where do they meet, how fast is each traveling when they meet, and when do they meet?

53. ## Algebra

In the graphing problem 3y=2x-9 m=? b=? What do m and b stand for? How do I solve?

54. ## Physics

Hot air rises over a heated stove element. The wall behind the stove appears to shimmer. Explain.

55. ## Physics

A 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.2 rad/s on frictionless horizontal ice. It takes a force of 1.22 N to stretch the rubber band by 1 cm.

56. ## Economics (PPFs)

Society has 20 units of capital and 20 units of labor. The production function for X can be expressed as X = K1/2L1/2, and the production for Y can be expressed as Y = K + L. Which of the following input allocations is not efficient? Solution: Industry X

57. ## Biology

can stomach acid dissolve a chewing gum? can stomach acid dissolve iron? pls someone help

58. ## pre calcu

A ball is droped out of a window of a tall building. If it hists the ground 3.5s later, how high aboe the ground is the window?

59. ## Music

Is a short coda sometimes known as a musical tag? I been searching the web but couldn't find any good information. http://www.essentialsofmusic.com/glossary/t.html

60. ## math

Could you please explain how to scale up? I have something that is worth 110 points that needs to be scaled up to 200 points but I'm not sure how to do it. Thank you.

61. ## Economics

Why did John Mayard Keynes decide to become an economist/ financial guru, apart from his interest?

62. ## History

Objectives of the Camp David Accord. Did the US improve its relationship with the Arab World?

63. ## Physics

You build a loop-the-loop in your backyard. It has a diameter of 3.10 m. a) How fast will you have to be moving at the top of the loop to avoid falling off? The answer I got was 3.90 m/s. Is this correct? b)If you'll be coasting from the time you get to

64. ## Math

Explain how to do 2/7 + 12/35 ?

65. ## Math, Precalc

(3^x)+(5^{x+3})=(3^{x+4})-(1/3)*( 5^{x+2}). Solve

66. ## math

A true-false test consists of 15 items. (a) If Chris does not study at all and guesses each and every item in the test, describe the probability model for the number of correct guesses. each individual question has a probability of 1/2 of being correct so

67. ## Math

Can you help with a math word problem on rates and ratios

68. ## psychology

When researchers find similarities in development between very different cultures, what implications might such findings have for the nature-nurture issue?

69. ## Chemistry

How do I determine the value of the reaction 2HI(g) + 2.4 kcal --> H2(g) + i2(g) delta H = a) 2.4 kcal b) -2.4 kcal c) 0.00024 kcal d) -0.00024 kcal

70. ## help

WHERE ARE ALL THE TUTORS WHEN I NEED THEM

71. ## algebra (check my work)

60% of what number is 24? a/w = p/100 24/w = 60/100 24 * 100 = 60* w 2400 / 60 = 60w / 60 w = 40 am i correct?

72. ## Math

A rectangle has an area of 48 square yards. For what whole number values of length & width will the rectangle have the smallest perimeter?

73. ## math

I counted a total of 40 white and yellow cars. I have 9 times as many white cars as yellow how man white cars do I have?

74. ## science

What volume of ethanol must be diluted with water to prepare 674 mL of 0.854 M solution? The density of ethanol is given as 0.789 g/mL. Answer in units of mL

75. ## Physics

Calculate the impulse (in kgm/s) received by a football when it's kicked in a kickoff. The ball has a mass of 0.27 kg and travels a horizontal distance of 68 m. The ball is kicked at an angle q of 20.5 with the horizontal and spends 2.276 seconds in the

76. ## Grammar

1.Select the correct sentence: a.She is younger than him and me. b.She is younger than he and me. c.She is younger than him and I. d.She is younger than he and I. 2. Select the correct sentence: a. They, theirselves, had a happy holiday celebration. b.

77. ## Chemistry

Sorry...it came through funny. O3 + H-C=C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 -> CO2 + H2O All of the numbers above are supposed to be subscript but keep coming out the same size as the letters. So this is the equation that i am trying to balance. In my question

78. ## geometry

I asked my teacher for a hint and he said that the pitcher's mound is not the radius. Am I supposed to assume that a side of a baseball diamond is 90? But that information wasn't given..... Still confused. If home plate is 60.5 feet from the pitcher's

79. ## Math

You and your roommate have timed the necessary physical operations. The ﬁrst physical production step is to wash out the mixing bowl from the previous batch, add all of the ingredients, and mix them in your food processor. The mixing bowls hold

80. ## Chemistry

Describe how you could find the % by mass of water in the hydrate CuSO4Ÿ5H2O assuming that you did not already know the formula. Be specific and list the laboratory procedural steps you would take in the order that you would perform them.

81. ## College Math

Movies A survey of 350 customers was taken at Regal Cinemas in Austin, Texas, regarding the type of movies customers liked. The following information was determined. • 196 liked dramas. • 153 liked comedies. • 88 liked science fiction. • 59 liked

82. ## Math 1428

How do you find the interval form of 6x=2

The coefficient of kinetic friction between a suitcase and the floor is 0.26. If the suitcase has a mass of 70.0 {kg}, how far can it be pushed across the level floor with 680 {J} of work?

84. ## Physics

I got part a and b, but not c. We are trying to find delta T in part c, but I'm still confused on where to start even with the help. (a) An iron block of the mass 1.2 kg is suspended on a spring of the spring constant 140 N/m, and merged into a vessel with

85. ## Algebra HELP

Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

86. ## physics

A butterfly at eye level is 18 cm in front of an plane mirror. You are behind the butterfly, 45 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?

87. ## math

Students at Euler Middle School are talking about ways to raise money for a school party. One student suggests a game called Heads or Tails. In this game, a player pays 50 cents and chooses heads or tails. The player then tosses a fair coin. If the coin

89. ## chemistry

The density of Al is 2.7g/cm3. Express the density of Al in Kg/m cubed

90. ## math

If a scientists is looking at a circle of 1.15 millimeters in diameter, how much of the circle can he see in centimeters?

91. ## math

I'm a little confused about the different kinds of equations - what is the difference between exponential and quadratic, and exponential, quadratic, and linear?

92. ## History

For my project we have to make a claim based off of how our country (mine is Libya) has been impacted by religion. Is this a solid claim: Because of Libya’s transitional government, Mummer al Qaddafi came into power, leading the Libyan people in a

93. ## math

Lee has a 1 1/2 pound supply of Kitty Biscuit Treats. Each day he gives his kitten 1/8 pound of the biscuits. For how many day will his supply last?

94. ## Islam

why is religion considered a source of political belief in the Middle East

95. ## Legislation

fact that compares and contrasts the 50 state legislatures. We know that no two legislatures are the same, so they differ in many ways. The information you bring can be in a chart, in text or any format that shows the distinctions. Examples could include

96. ## Math

Depreciation on a 2014 25 ft boat bought for \$70,000 in latrine November 2014?

97. ## science

what measures the quantity of matter

98. ## Physical Science

If Argon is 39.948, calculate average at kc mass of argon