Questions Asked on
November 6, 2009

  1. math

    The London Eye is a large ferris wheel. Each sealed and air-conditioned passenger capsule holds about 25 passengers. The diameter of the wheel is 135 m, and the wheel takes about half an hour to complete one revolution. a) Determine the exact angle, in

  2. chemistry

    What mass of solid aluminum hydroxide can be produced when 50.0 mL of 0.200M Al(No3)3 is added to 200 Ml of a 0.100M KoH

  3. chemistry

    What mass of solid aluminum hydroxide can be produced when 50.0 mL of 0.200M Al(No3)3 is added to 200 Ml of a 0.100M KoH

  4. college

    The arm in the figure below weighs 44.5 N. The force of gravity acting on the arm acts through point A. Determine the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in

  5. chemistry

    A process which is unfavorable with respect to enthalpy, but favorable with respect to entrophy a)could occur at high temperatures, but not at lower temperatures b)could not occur regardless of temperature c)could occur at any temperature d)could occur at

  6. math (word problem)

    In 1994, the life expectancy of males in a certain country was 65.7 years. In 2000, it was 69.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994 the linear function E(t) that fits the data is E(t)=?t+?

  7. Heat of Formation

    When 10.00 g of iron is burned in O2(g)to form Fe3O4 (s) , enough heat is generated to raise the temperature of 784 g of water from 18.0 C to 38.0 C. Calculate the heat of formation of Fe3O4 (s) under these conditions in kJ/mol.

  8. math

    A salesperson bought a caase of pens.On Monday, he sold 1/2 of the pens.On Tuesady, he sold 30 more.On Wednesday, he sold 1/3 of the pens that were left.On Thursday, he sold the remaining 40 pens.How many pens were originally in the case,

  9. math

    a true or false test has 5 questions. what is the probability of guessing exactly four out of the five answers correstly.

  10. Chem

    How many moles of ions are released when this sample is dissolved in water? 3.55*10^18 formula units of Ba(OH)2*8H2O? So far I know to divide this by avogadro's number (/6.022*10^23) which equals .590*10^-5 mol. Don't know what to do from here. Please

  11. pre algebra

    Write rules for using absolute value to compare two integers. BE sure to take all of the possible combinations in to account. __ I don't know what to write?

  12. physics

    A barge with mass 1.0×105 kg is proceeding down river at 5.8 m/s in heavy fog when it collides broadside with a barge heading directly across the river (see the figure). The second barge has mass 2.58×105 kg and was moving at 4.2 m/s. Immediately after

  13. SCIENCE/MATH

    Land growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a)Calculate how long it will take to

  14. 11th grade

    The students of litchfield High school are in grades 9,10,11,12. Of the students , 1/4th are in 9th grade, 1/3rd are in 10th grade, 1/6th is in 11th grade and there are 300 in the 12th grade, how many students are there all together?

  15. Physics

    If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. So, I used mg(h+x)=1/2 k x^2 then solved for x

  16. Literature

    4. The term 'point of view' refers to the way the writer has chosen to a. create conflict b. present dialogue c. express an opinion d. tell a story B or D... 7. The theme of a story a. announces the topic in one or two words b. is stated directly in the

  17. Physics

    If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. So, I used mg(h+x)=1/2 k x^2 then solved for x

  18. math

    suppose a license plate contains 4 digits.the probability of plate number having an even or an odd digit is the same.what is the probabilty of having a license plate with all even digits.

  19. Chemistry

    How will the volume of a fixed sample of gas change if its pressure is doubled and the Kelvin temperature is doubled? a)the change cannot be determined without more specific information b)it will decrease by a factor of 2 c)it will increase by a factor of

  20. Chemistry

    Gas particles travel at speeds of up to 500 m/s. Why, then, does it take so long for gas molecules to travel the length of a room? My answer would be that the molecules still have a weak attraction to each other and, in addition, the friction of the

  21. Science

    what is the silica content of magma that has low velocity

  22. Science

    what is the silica content of magma that has low velocity

  23. Science

    why does high silica magma tend to form volcanic domes with steep sides

  24. math

    Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a)The sales representative informs you that there are two floor plans still available, and that there are a total of 56

  25. Economics

    Suppose that the objective of a union is to maximize the total dues paid to the union by its membership. Explain the union strategy, in terms of the wage level and employment level, under the following two scenarios. a)Union dues are a percentage of total

  26. chemistry help!

    A mixture contained CaCO3 and MgCo3. A sample of this mixture weighing 7.85g was reacted with excess HCl. The reactions are-- CaCO3 + 2HCl --> CaCl2 + H2O + CO2 MgCO3 + 2HCl --> MgCl2 + H2O + CO2 Is the sample reacted completely and produced 1.94L of CO2,

  27. Economics

    Suppose that a nation has implemented a system for applying a tax rate of 2 percent to the incomes earned by the 10 percent of its residents with the highest income. All funds collected are then transferred directly to the 10 percent of the nation's

  28. science

    what is the connection between native americans and federal government

  29. Writing

    Someone plz give me interesting topics for argumentative essay

  30. Physics

    A rollercoaster car starts at rest on top of a frictionless hill of height 17 m, slides down to ground level, and then into a frictionless loop of radius 5 m. When the car is at the side of the loop (level with the center), find the magnitude of the car's

  31. Chemistry

    A 500.0-mL sodium iodide (NaI) solution was prepared by dissolving 37.7g of solid NaI in water. Chlorine gas was bubbled through a 100.0-mL sample of this solution until the reaction was complete. How many grams of molecular iodine were produced?

  32. chemistry

    How many mililmeters(mL) are in a sample with 2.0L?

  33. ela

    what would you do if you woke up one morning and it is raining chocolate pudding, who would you tell, what would happen when you meet your friends?

  34. biology

    can SCIATIC PAIN be ..cured? if yes..then forever or for sometime?

  35. math

    1) a company manufactures and sells a specialty watch. the financial reserach department detemines that at the price of $88 each, the demand would be 2,000 watches and at $38 each the demand will be 12,000 watches. A) assuming a linear relationship between

  36. math (word problem) last one

    The equation y=-1777x+27,152 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=3 corresponds to 2003, x=4 corresponds to 2004 and so on. Predict the number of gun deaths in 2004 and

  37. math

    You buy a belt for $10 and some socks.Each pair of socks cost $3.The total shipping cost $3.What is the total cost if you buy 11 pairs of socks

  38. Math-Answer included

    {9, 7, 13, 24, 32, 45, 47} First you have to find the mean The mean is 9+7+13+24+32+45+47=177/7=25.2857=25.29 Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. {9, 7, 13, 24, 32, 45, 47}

  39. history

    describe the two ways america's fight for independence influenced other countries?

  40. college physics

    A cook holds a 1.90 kg carton of milk at arm's length. What force B must be exerted by the biceps muscle?

  41. literacy

    i need to know which country these words came from caravan,yoghurt,sofa,dessert and shampoo

  42. History

    What was the Oregon Trail?

  43. English

    I have been asked to write a synthesis essay. I have never written this type of essay before. This is my first rough draft, I am just looking to see if I have the right approach etc. Thanks! Passion vs. Logic: Immigration Reform One of the most polarizing

  44. chemistry

    How will the volume of a fixed sample of gas change if its pressure is doubled and the Kelvin temperature is doubled? a)the change cannot be determined without more specific information b)it will decrease by a factor of 2 c)it will increase by a factor of

  45. math

    The London Eye is a large ferris wheel. Each sealed and air-conditioned passenger capsule holds about 25 passengers. The diameter of the wheel is 135 m, and the wheel takes about half an hour to complete one revolution. a) Determine the exact angle, in

  46. Chemistry

    Consider a sample of helium and a sample of neon, both at 30ºC and 1.5atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? a- each weighs the same amount b- each has the same # of atoms of gas c- the density

  47. math

    a dog owner has 200ft of fencing and wants to enclose the greatest possible rectangular area for her dog .what dimension should she use

  48. physics

    Ricardo, mass 88 kg and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 30 kg canoe. When the canoe is at rest in the placid water, they exchange seats, which are 3.0 m apart and symmetrically located with respect to the center of the

  49. english

    what does the prefix etym mean

  50. physics

    A bullet of mass 8.0 g is fired horizontally into a 2.2 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.40. The bullet comes to rest in the block, which moves 2.30 m. (a) What is the speed

  51. Calculus

    f(x) = [3/x^2] - [5/x^7], F(x) is the antiderivative of f(x) with F(1)=0. F(x) = ? I have no idea how to approach this problem. The fractions are scaring me.

  52. Chemistry

    Consider a sample of helium and a sample of neon, both at 30ºC and 1.5atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? a- each weighs the same amount b- each has the same # of atoms of gas c- the density

  53. math

    start with 1, multiply by 2. then multiply the result by 3.then continue to alternate multiplying by 2 and by 3.what is the ones digit after the twelfth multiplication

  54. math

    your aunt is building a garden in her backyard.she has 90ft of fencing to surroud it.if she wants the lenght to be 15 ft onger than the width , what should the dimensions of her garden be

  55. math

    your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of five kittens contain all made kittens

  56. math

    your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of five kittens contain all made kittens

  57. math

    your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of five kittens contain all male kittens

  58. science

    Can someone please tell me when a chromosome is a chromosome and when it is called a chromatid. For ex/ after anaphase the chromatids are now each called a chromosome,etc

  59. chemistry

    How do you figure out the molecular weight?

  60. COM/220

    Below the instructions and the script are my responses. could someone take a look and see if they seem so be correct? Write a minimum 500-word response to the following: 1. Identify and explain at least 2 specific examples of bias in the speech. 2.

  61. Statistical Application

    What are the major differences between practical and statistical significance?

  62. chemistry

    Could someone explain dipole-dipole forces for me?

  63. health 230

    summarize health technologies

  64. math

    1.Explain why there is no number that can replace N to make the equation |n| = -1 true. 2. List the integers that can replace N to make the statement -|8| < n < -|-5| true. I don't really get what am I supposed to do?

  65. health 230

    summarize health communication technologies

  66. physics

    Upon its return voyage from a space mission, the spacecraft has a velocity of 24000km/h at point A, which is 7000km from the center of the earth. Determine the velocity of the spacecraft when it reaches point B, which is 6500km from the center of the

  67. math

    y=16+x, for x

  68. Math

    Create a polynomial of degree 3 that has x-int at -1, 1, 3

  69. math

    When a pilot banks an aircraft moving at a speed, v, in metres per second, at an angle a, the radius of the turn that results is given by the formula: r = v^2/g * tan(pi/2 - a) where g is the accelatation due to gravity, or 9.8 m/s^2. Use an appropriate

  70. Math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product

  71. History

    For our research paper we have to use one primary site. Which means the website must end in edu or whatever. Do you know one for the Jacksonian Era.

  72. Math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product

  73. Math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product

  74. programming

    How would one write a short structured design for loading a truck? phseudocode only that accomplishes this task. I am now failing this class so if anyone can help please do!!

  75. math

    Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a)The sales representative informs you that there are two floor plans still available, and that there are a total of 56

  76. Socials

    Napoleon told the Africans of Haiti that he understood their plight. Did he? Explain No,he did not understand their problem because if he had, then he would have put an end to the slavedom they were living in, right away. Napoleon just used the Africans

  77. 5th grade

    matt ran 1/5 mile less on monday than on tuesday. he ran 1/2 mile less on wednesday than he did on monday. he ran 7/10 mile more on friday than on wednesday. if matt ran 4/5 mile on friday, how far did he run on tuesday? stumped, please help!

  78. Science

    how is a caldera formed

  79. algebra

    Write an equation that shows the relationship between the quantities; the total cost of hiring a certain plumber is a flat rate of $35 plus $9.50/hr.

  80. Socials

    Before the uprising in Haiti, would Europeans have believed that a slave revolt on this scale was possible? Why or Why not? I think yes, because well a similar thing happened in France as well, so from that they must have got a clue that they may also face

  81. calculus

    Alright so implicit differentiation is just not working out for me. Use implicit differentiation to find the slope of the tangent line to the curve at point (4,1). y / (x-2y) = x^3 + 4 Tried quotient rule to get the derivative of the left side, then got

  82. chemistry

    How do it geth the equation for 50.0 grams of iron(II)carbonate react completely with hydrochloric acid how many grams of carbon dioxide gas may be produced?

  83. Medical Transcription

    What is the main difference between a stem cell and a cancer cell?

  84. math

    a)The sales representative tells you they also have two floor plans available, but they only have 38 homes available. Write an equation that illustrates the situation. Use x and y to denote floor plan #1 and floor plan #2 respectively. b)The representative

  85. psychology

    What are some of the characteristics of a Type A personality? How might having a Type A personality affect a person’s reaction to stress? What would you view as some advantages or disadvantages of a Type A personality?

  86. Socials

    What was the purpose of the continental system? Did it succeed or fail? Imagine that you are a memo outlining the advantages and disadvantages of disrupting Britain's trade with Europe. Your memo should examine the impact of such a move from the standpoint

  87. calculus

    How long will it take an investment to triple in value if the interest rate is 4% compounded continuously? i know its set up as 3x=x(e^rt) but im confused as what to do nxt

  88. History

    How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia,

  89. calculus

    How long will it take an investment to triple in value if the interest rate is 4% compounded continuously? i know its set up as 3x=x(e^rt) but im confused as what to do nxt

  90. Extra information

    What if Canada and the united states no longer traded goods and services, what do u think wud happen?

  91. Social studies

    Write the kind of pamphlet against the government of Charles I that you imagine walter prynne might have written. It doesn't say anything about walter prynne in my book, the homework is due tomorrow,can someone summerizes the information about him to

  92. Spanish

    Can someone please check my work? Gazpacho Es un sopa frío y refrescante de Andalucía. Es hizo con tomates, pepinos, pimientos y ajo. Tortilla Española Ingredientes incluya patatas, cebollas y huevos. ¡Es la comida perfecto si necesites un desayuno

  93. physics

    Four identical masses of 2.6 kg each are located at the corners of a square with 1.5 m sides. What is the net force on any one of the masses?

  94. psy

    What is the difference between emotional effects and cognitive effects? Give least 2 examples of emotional effects this stressor might produce

  95. math

    -3(2x-7)-12+10x=

  96. Art

    My class and I have done this diorama for a art project, and to do it we chose the movie twilight. We all had to pick different scenes, and I chose the treetop scene. I need help on my statement for it. This is what i have so far: This is the scene where

  97. physics

    At what displacement from the equilibrium is the total energy of a simple harmonic oscillator one - sixths KE and five - sixth PE? Answer should be in terms of the amplitude A.

  98. English

    The epic "Paradise Lost" suggests that the culture that produced it is a/an: a. christian culture that believes in Heaven and Hell. b. unforgiving culture. c. culture full of traditions. d. culture of hopelessness

  99. History 1301

    How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe? Be specific. How were these differences important to the international state of affairs in 1450?

  100. physics

    A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. How long does it take to hit the ground? (acceleration of gravity = 9.81 m/s^2)

  101. C Programming

    I am trying to find the sum of two integers. I entered the following program into the Visual Studio and it is telling me that there are errors. Can someone tell me where they are please? #include int main( void ) { int integer1; int integer2; int sum;

  102. 9th grade

    how to unscramble colors from words?????

  103. art

    what color is LARMENDEGREE when you unscramble it??

  104. Calculus

    A rancher wants to fence in an area of 500000 square feet in a rectangular field and then divide it in half with a fence down the middle, parallel to one side. What is the shortest length of fence that the rancher can use?

  105. art

    what color is DMREAD when you unscramble it??

  106. Calculus

    The circumference of a sphere was measured to be cm with a possible error of cm. Use linear approximation to estimate the maximum error in the calculated surface area.

  107. art

    what color is ICRAMMEDDU when you unscramble it???????

  108. Calculus

    The circumference of a sphere was measured to be 74 cm with a possible error of 0.5 cm. Use linear approximation to estimate the maximum error in the calculated surface area.

  109. art

    what word is CABLERULEUNE WHEN U UNSCRAMBLE IT???

  110. Physics

    This is a four part question, I need help with the fourth part. 1. I found the Gravitational Potential Energy of a gymnast at her maximum height above a trampoline to be 400J. 2. I found the Kinetic Energy of her just before she makes contact with the

  111. Physics

    If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. I know i must use Fs= kx, but where do I start?

  112. Office Finance

    Each day's receipts can be kept separate by, a.preparing a deposit slip for each day's receipts, b. reconciling the bank statement c.listing the ABA numbers d.making daily bank withdrawals

  113. 11th grade

    Hello there i am writing a book and i would like to know how many subjects does an eleventh grader have per day. please reply as soon as possible. thank you very much. P.S: This question is meant to be answered by an american individual due to various

  114. al faisal international school

    how to make a good sentence of the word(wheeled)

  115. math115

    is the following set of numbers a perfect triple? 13, 15, 18

  116. Humanities

    Give me some ideas on an individual or group of individuals who have continued to pursue liberty and happiness in the twentieth century or beyond.

  117. Math: Pre-Calc

    A right triangle has hypotenuse 5 inches long. Its area is 4 square inches. How long are the other sides?

  118. math

    what is 12/3

  119. Chemistry

    Predict the product(s) and write a balanced equation for the following redox reaction: pentane (C5H12) + oxygen ---->

  120. math algebra

    Trains A and B are traveling the same direction on parallel tracks. Train A is traveling at 100 mph and train B is traveling 110 mph. Train A passes a station at 6:10 A.M. If train B passes the same station at 6:40 A.M. at what time will train B catch up

  121. physics

    what is the physics principle behind fiber optics??

  122. physics

    a body is slided through an inclined plane frm a building.If angle of slope is 30 degree and the distance covered aslong the slope is 100m find the height of building

  123. math

    What is the slope of the line perpendicular to the line whose equation is y= -2/3x-5?

  124. math

    1) a company manufactures and sells a specialty watch. the financial reserach department detemines that at the price of $88 each, the demand would be 2,000 watches and at $38 each the demand will be 12,000 watches. A) assuming a linear relationship between

  125. math algebra

    The equation y=-1777x+27,152 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=3 corresponds to 2003, x=4 corresponds to 2004 and so on. Predict the number of gun deaths in 2004 and

  126. math algebra

    im not good with fractions when you have to graph them ........ graph the equation using the slope and the y-intercept. Y=5/3x+7