Questions Asked on
October 22, 2010

  1. math

    George saves 18% of his total gross weekly earnings from his 2 part-time jobs. He earns $6.25 per hour from one part-time job and $7.50 per hour from the other part-time job. George works a total of 40 hours between the two jobs each week. What additional

    asked by donna
  2. Organic Chemistry

    Separation scheme for isolating benzoic acid Could you please show me a separation scheme for isolating benzoic acid from a reaction mixture if mixing a Grignard reagent phenylmagnesium bromide with dry ice (CO2) in ether? Thanks!

    asked by Jessica
  3. College Physics

    A freely rotating merry-go-round on a playground has a moment of inertia of 312 kgm2 and a radius of R=2.5 m. It is rotating with ω0=2.8 rad/s when a kid of mass 45 kg is standing on its outer rim. Neglecting friction, what is going to be the angular

    asked by Paige
  4. chemistry

    In the balanced equation MnO2 + 4HCl = MnCl4 +2H2O, how many moles of MnCl2 will be produced when 1.25 mol of H2O are formed?

    asked by Jerome
  5. Physics

    Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal

    asked by Trevor
  6. physics

    2. Explain how the tension force gets transmitted along from one end of a string to the other. Does the amount of force that gets transmitted depend on how elastic or stretchable the string is? Explain.

    asked by brian
  7. Chemistry

    Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. In the simplest case, ethene (C2H4) and H2 form ethane (C2H6). If 124 kJ is given off per mole of C2H4 reacting,

    asked by HELP !
  8. physics

    A loaded dogsled has a mass of 400kg and is being pulled across a horizontal, paced snow surface at a velocity of 4.0m/s (N). Suddenly, the harness separates from the sled. If the coefficient of kinetic friction for the sled on the snow is 0.0500, how far

    asked by Jane
  9. physics

    16. How much work is done on a bookshelf being pulled 4.00 m at an angle of 35.0„a from the horizontal? The magnitude of the component of the force that does the work is 87.0 N

    asked by michelle
  10. Statistics

    The average time a visitor spends at the Renzie Park Art Exhibit is 62 minutes. The standard deviation is 12 minutes. If a visitor is selected at random, find the probability that he or she will spend: A)At least 82 minutes at the exhibit B)At most 50

    asked by John
  11. Science

    Separation scheme for isolating benzoic acid Could you please show me a separation scheme for isolating benzoic acid from a reaction mixture if mixing a Grignard reagent phenylmagnesium bromide with dry ice (CO2) in ether? Thanks!

    asked by Jessica
  12. College Chemistry

    A student weighs out 0.568 g of KHP (molar mass=204g/mol) and titrates to the equivalence point with (36.78 cm cubed which is 3) of a stock NaOH solution. What is concentration of stock NaOH solution? KHP is an acid with one acidic proton. The word cubed

    asked by Elleni
  13. Chemistry

    80.0 mL of water is initially at room temperature (22degrees C). A chilled steel rod at 2 degrees C is placed in the water. If the final temperature of the system is 21.2 degrees C, what is the mass of the steel bar? Specific heat of water =

    asked by Ellen
  14. physics

    A centrifuge in a medical laboratory rotates at an angular speed of 3800 rev/min. When switched off, it rotates through 46.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. in 1 rad/s2

    asked by john
  15. physics

    A 15kg box is resting on a hill forming an angle of a horizontal surface. The coefficient of static friction for the box on the surface is 0.45. Calculate the maximum angle of the incline just before the box starts to move.

    asked by Samantha
  16. Calculus

    Determine whether the integral is divergent or convergent. If it is convergent, evaluate it and enter that value as your answer. If it diverges to infinity, state your answer as "INF" (without the quotation marks). If it diverges to negative infinity,

    asked by Hannah
  17. physics

    while john is traveling along an interstate highway he notices a 160-mile marker as he passes through town. later john passes another mile marker, 115. what is the distance between town and john's current location? what is john's current position?

    asked by Anonymous
  18. physics

    Two blocks are tied together with a string as shown in the diagram.(There is a block on a horizontal incline, its mass is 1.0kg, there is a rope connecting that block to a pulley which then connects to another block that is 2.0kg. The angle of the incline

    asked by mercedes
  19. chemistry

    Select the answer that best describes an aqueous solution made from each of the following substances: Reference: Ref 14-4 solid aluminum chloride (AlCl3)

    asked by Anonymous
  20. science

    What is the pronunciation rebus of helium?

    asked by Heather Hughes
  21. College - Chemistry

    Given that delta Hrxn for OH- ions is -22.9 kJ/mol, calculate the enthalpy of neutralization when I mole of a strong monoprotic acid (such as HCl) is titrated by 1 mole of a strong base (such as KOH) at 25-degrees C.

    asked by Mint
  22. physics

    In a typical golf swing, the club is in contact with the ball for about 0.0010 . If the 45- ball acquires a speed of 57 , estimate the magnitude of the force exerted by the club on the ball.

    asked by Ashley
  23. statistics

    At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard deviation is 3.7 years. If a random sample of 15 proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between

    asked by Cindy
  24. phy

    A 175 kg horizontal beam is supported at each end. A 300 kg piano rests a third of the way from one end. What is the vertical force on the support closest to the piano? N What is the vertical force on the support furthest from the piano? N

    asked by ami
  25. American Government

    The Constitution establishes rules that the United States government must observe. There are five main principles that form the basis of these rules and ensure our democratic government. In a minimum of three well-developed paragraphs, list, define, and

    asked by Cheryl
  26. physics

    A picture hangs motionless on a wall as shown in the Figure. If the picture has a mass of 5.0 kg, what are the tension forces in the wires?

    asked by Andres
  27. Physics

    Two blocks are tied together with a string as shown in the diagram.(There is a block on a horizontal incline, its mass is 1.0kg, there is a rope connecting that block to a pulley which then connects to another block that is 2.0kg. The angle of the incline

    asked by Mercedes
  28. Chemistry

    A 325.0-g piece of gold at 427°C is dropped into 200.0 g of water at 22.0°C. (The specific heat of gold is 0.131 J/g°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.) Can you please outline step by step how i

    asked by Bruce
  29. physics

    while john is traveling along an straight interstate highway, he notices that the mile marker reads 260. john travels until he reaches the 150-mile marker and then retraces his path to the 175-mile marker. what is john's resultant displacement from the

    asked by Anonymous
  30. social studies

    my question is: why did Aboriginal peoples avoid involvement with the rebellions of 1837? i get the question and I tried researching too, but i cant find anyhting??

    asked by pkd
  31. physics

    It takes the elevator in a skyscraper 4.0 to reach its cruising speed of 10 . A 60 passenger gets aboard on the ground floor.What is the passenger's apparent weight while the elevator is speeding up?

    asked by Luke
  32. Calculus

    The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please... i am unable to get the correct answer :(

    asked by Adam
  33. College Chemistry- Hess's Law

    Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation: 2 NO2(g) + 1/2 O2(g) = N2O5(s). 2 NO(g) + 3/2 O2(g) = N2O5(s), H = -223.7 kJ NO(g) + 1/2 O2(g) =

    asked by Tahnee
  34. math

    An airplane flew for 6 hours with a 22km/hour tailwind. The return flight against the same wind takes 8 hours. Find the speed of the plane with no wind and windspeed.

    asked by Anonymous
  35. statistics

    For a certain group of individuals, the mean hemoglobin level in the blood is 21.0 grams per milliliter (g/ml). The standard deviation is 2 g/ml. If a sample of 25 individuals is selected, find the probability that the mean will be greater than 21.3 g/ml.

    asked by diandra
  36. Word Problem

    Martha can rake the leaves in her yard in 2 hours. Her brother can do the job in 8 hours. How long will it take them to do the job working together?

    asked by Darlene
  37. chemistry

    group 1 cations: im doing a lab report for a experiment we did today. we had a known and we checked it for pb^+2, Hg2^+2, and Ag^+1. we have to write our observations for: A Precipitation of group 1. what does this mean? i understand the other questions,

    asked by JES
  38. Chemistry

    I'm not sure if i did this problem right or not. I keep reading through my book, and i think i followed the equations right, but i'm not confident with my answers. The problem: 5.0 g of glucose,C6H12O6, is disolved in 500.0 g of acetic acid. What is the

    asked by Angelina
  39. Physics

    Three blocks on a frictionless horizontal surface are in contact with each other, as shown below. A force F is applied to block A (mass mA). (a) Draw a free-body diagram for each block. Determine (b) the acceleration of the system (in terms of mA, mB, mC),

    asked by Anonymous
  40. History

    34. Designed as an attempt to secure the loyalty of the French to their new rulers, this act broke new ground in toleration and statesmanship. Unfortunately for the British, the Americans saw only sinister designs. This act was the a. Treaty of Paris, 1783

    asked by Hannah
  41. Chem

    Estimate the equilibrium constant for the weak base (CH3)2NH, if a 1.59×10-2 M aqueous solution of (CH3)2NH has a pOH 2.58 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (CH3)2NH + H2O =

    asked by Kyo
  42. Physics

    A man measures the acceleration of an elevator using a spring balance. He fastens the scale to the roof, and suspends a mass from it. If the scale reads 98N when the elevator is at rest, and 93N when the elevator is moving. a) what is the acceleration of

    asked by Michael
  43. Statistics

    The standard deviation of GPAs (grade point averages) of all male students at a college is .35 and the standard deviation of GPAs of all female students at the same college is .34. Suppose we take one sample of 40 male students and another sample of 50

    asked by Lisa
  44. Physics

    A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 150m above the glacier at a speed of 110m/s. How far short of the target should it drop the package?

    asked by Student
  45. chemistry

    Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 4 KHCO3 + 3 O2 How many moles of H2O are needed to react with 12.15 moles of CO2? moles A chemical reaction occurs between solutions of LiCl and silver nitrate. This reaction produces a precipitate that

    asked by Erika
  46. College Chemistry

    Calculate pH of a 1.0 mol L -1 boric acid solution. (Ka(H3BO3) = 5.8 x 10 power -10 Please solve this problem. My computer does not have the power symbol. Can you please show maths and steps. Is mollar mass required of the above. Is -log and constant above

    asked by Elleni
  47. Writing

    Can you please check my citation? "Deforestation facts, Deforestation Information, Effects of Deforestation." National Geographic. n.p.,n.d. 10/22/10

    asked by Elizabeth
  48. biology

    choose the correct statement concerning blood vessels. a. venules control blood flow through capillaries. b. arterioles drain blood from capillaries. c. veins have thinner walls, but more valves than arteries. d. nutrient exchange may occur along arterial

    asked by jackie
  49. physics

    why does the filament of a bulb does not melt though it heats more than 3400 degree celcius

    asked by jane
  50. Chemistry

    calculate the grams of sodium in 17.606 g of Na2CO3

    asked by HELP
  51. College Chemistry

    What is pH of the buffer 0.1 mol L-1 Na2HPO4/0.15 mol L-1 KH2PO4? (Given Ka(H2PO4-)=6.2x10 power-8). Sorry if the power is confusing. My computer does not have the symbol. Thanks

    asked by Elleni
  52. physics

    A uniform solid sphere of mass M and radius R is rolling without sliding along a level plane with a speed v = 2.30 m/s when it encounters a ramp that is at an angle è = 27.6° above the horizontal. Find the maximum distance that the sphere travels up the

    asked by Anonymous
  53. programming

    write a program to calculate the amount of a server's tip given the amount of the bill and the percentage tip ovtained via input dialog boxes. The output should be a complete sentence that reiterates the inputs and gives the resulting tip. here is my

    asked by Stacy
  54. Chemistry

    A 30.5 g sample of an alloy at 94.0°C is placed into 48.7 g water at 20.3°C in an insulated coffee cup. The heat capacity of the coffee cup (without the water) is 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat

    asked by Nevaeh
  55. Chem

    I stuck on this prob. Can you help me to do this? 10.00 mL of a solution containing 0.20 M NaCl and 0.25 M AlCl3 is introduced into a cation exchange column. How many moles of hydronium ions will be released by the column?

    asked by Kim
  56. cemistry

    what is an equation for ascorbic acid and sodium hydrogen carbonate?

    asked by Mary
  57. Physics

    Help how to find work If a worker pulls a 10kg bucket up a 25 m well, how much work has he or she done?

    asked by Aisumi
  58. Visual Basics 2008

    This is a from chapter 3 #82. the problem is: Write a program to calculate the amount of a server's tip given the amount of the bill and the percentage tip obtained via imput dialog boxes. The output should be a complete sentence that reiterates the inputs

    asked by Lee
  59. Physics

    A solid ball of mass m and radius r rolls without slipping through a loop of radius R, as shown in the figure. From what height h should the ball be launched in order to make it through the loop without falling off the track? (Use any variable or symbol

    asked by Gina
  60. finance

    John borrows $150,000. The terms of the loan are 7.5% over the next 5 years. It is important to note that he makes annual rather than monthly payments. Construct a loan amortization schedule that shows the 5 payments of John's loan.

    asked by sweet
  61. physics

    On Friday in class, we learned that if you were to aim right at the bulls-eye, the arrow would fall under gravity and drop below the intended target. If you intend to hit a bulls-eye it is necessary that you aim slightly above it. Suppose the arrow speed

    asked by Anonymous
  62. poetry

    where there's a wall there's a way around, over, or through there's a gate maybe a ladder a door a sentinel who sometimes sleeps there are secret passwords you can overhear there are methods of torture for extracting clues to maps of underground

    asked by Joe
  63. Chemistry

    A new element, Canadium, not found on earth, contains 3 isotopes. given the following information, calculate the atomic mass of Canadium. Isotope Mass (amu) % abundance 1 429.633 21.29 2 429.121 42.47 3 429.398 ?

    asked by peter
  64. economics

    Best Western University is trying to increase the size of its student body by shifting the demand curve for its educational services to the right. Which of the following will NOT shift its demand curve to the right?

    asked by deanna
  65. Chemistry

    Calculate the number of molecules in 3.1466x10^1 grams of sulfur dioxide, SO2

    asked by HELP
  66. College Chemistry

    What is pH of an aqueous solution formed by adding 20 mL of 0.1 mol L-1 NaOH to 30 mL of 0.2 mol L-1 HCI? Please show steps and maths. Is there a unit conversion if so how is this done. Thank you

    asked by Elleni
  67. english

    In the answer area below, write the conjunction in the following sentence. Sentence: Give it to the boy or his mother. This doesn't seem like it should be difficult, but I want to make sure I understand. Is 'or' the conjunction?

    asked by Jason
  68. physics

    A car of mass 1600 kg is traveling without slipping on a flat, curved road with a radius of curvature of 38 m. If the car's speed is 15 m/s, what is the frictional force between the road and the tires? in Newtons

    asked by john
  69. algebra

    a piece of wire that is 58cm long is cut into three pieces. the longest piece is 6cm shorter than the sum of the lengths of the other two pieces. five times the lengths of the shortest piece is 10cm less than the sum of the lengths of the other two pieces.

    asked by ckim
  70. computer

    In Windows Vista, which button is used to create a new folder? A. Organize C. File B. Windows icon D. Views 20. Which Windows feature allows you to personalize your computer system? A. My Pictures C. Default Programs B. Control Panel D. Computer

    asked by saint
  71. physics

    is the force exerted by the wall on the person’s hand passive or active?

    asked by brian
  72. Physics

    Some kid (mass 20 kg) jumps with a velocity of 3.2 m/s horizontally off some steps (height 0.55 m) onto his heavy duty skateboard (mass 3 kg, height 0.03 m), which is initially at rest. How fast will he be skating?

    asked by Sam
  73. physics

    An object is on a frictionless inclined plane. The plane is inclined at an angle of 25.5 degrees with the horizontal. Using the accerlation due gravity from your reference table. What is the magnitude of object's acceleration?

    asked by Anonymous
  74. business

    A person with type A behavior: is always in a hurry. gets a heart attack at an early age. is impatient and angry. wants success at any price

    asked by dina
  75. Math

    Is this right? If you interchange the coordinates of any point in quadrant II, the new point would then be in (what Quadrant) Answer is quadrant IV.

    asked by TiffanyJ
  76. US History

    41. A neutron atom of potassium has an atomic number of 19 and an atomic mass number of 39. Find its number of protons, neutrons, and electrons. This is what I got- Protons: 19 Neutrons: 20 Electrons: ? Thanks -MC

    asked by mysterychicken
  77. Physics

    A wood crate is sitting on a concrete floor. The crate has a mass of 7.4719x10^2 kg. The crate has an applied force in the x direction and moves with constant velocity in that direction. What is the applied force acting on the crate, to three significant

    asked by annonomus
  78. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  79. language-poetrypart 1

    When a poet wishes to use figurative language he or she will use words that are a)Commotativo and denotativo b) Only denotativo c) Only commotativo d) Ambiguous

    asked by luis
  80. english

    What term describes the vantage point from which the story is told?

    asked by daniel
  81. Physics - Please help!

    Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal

    asked by Anonymous
  82. algebra

    bayside insurance offers two health plans. under plan A, Giselle would have to pay the first $130 of her medical bills, plus 40 % of the rest. Unde plan B, Giselle would pay the first $140, but only 35% of the rest. For what amount of medical bills will

    asked by chris
  83. Math

    A rug is to fit in a room so that a border of consistent width is left on all four sides. If the room is 9 feet by 19 feet and the area of the rug is 24 square feet, how wide will the border be?

    asked by Ford
  84. algebra

    9x - 4y = -36 in slope intercept form

    asked by Anonymous
  85. world history

    Compare the Kennedy Administration’s New Frontier domestic policies to that of the Johnson Administration’s Great Society and in the 150-200 response complete a contrast comparison discussion.

    asked by Anonymous
  86. physics

    Suppose that a block with mass 40 kg is sliding down a frictionless inclined plane slanted at a 37 degree angle. Find how fast it is accelerating across the inclined plane.

    asked by Desiree
  87. physics

    A 35 turn coil of radius 4.9 cm rotates in a uniform magnetic field having a magnitude of 0.53 T. If the coil carries a current of 20 mA, find the magnitude of the maximum torque exerted on the coil.

    asked by chuck
  88. 12th grade

    whats the x-intercepts of the graph y = 42x2 + 28x

    asked by destiny
  89. agriculture

    how long does it take to farm an acre if your implement is 42.5 feet wide and you are going 6 mile an hour

    asked by mike
  90. Science

    Cannabis tricks nerves in the brain into sending distorted messages. Which of the drugs effects on the body could this explain??? Helpp!

    asked by Anna
  91. phyiscs

    A stone is thrown horizontaly from the top of a 25.00-m cliff. The stone lands at a distance of 40.00 m from the edge of the cliff. What is the horizontal velocity of the stone?

    asked by ashlee
  92. geometry

    AC=12, AB=34, WHAT DOES CB=

    asked by JOHN
  93. econmics

    The MorTex Company assembles garments entirely by hand even though a textile ma-chine exists that can assemble garments faster than a human can. Workers cost $ 50 per day, and each additional laborer can produce 200 more units per day ( i. e., marginal

    asked by raja
  94. Calculus

    This is a tough one :( The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please... i am unable to get the correct answer :(

    asked by Kristina
  95. science

    Which pair of substances would likely neutralize each other? A) lye and amonia B) vinegar and battery acid C) ammonia and calcium carbonate D) distilled water and rain water

    asked by Rebecca
  96. Biology

    The modern antibiotic revolution began with the discovery of which antibiotic? sulfanamide quinoline tetracycline penicillin acyclovir Hopanoids found in sedimentary rock are an example of a biosignature. microfossil. stromatolite. banded iron formation.

    asked by Max
  97. ECONOMICS HELP PLEASE

    i need to find any sources (articles) dealing with factory orders, employment levels, foreign companies, and factory closures... because I need to write a page of each one of them and what it means also...please help me on it

    asked by sue
  98. Grade 11 Math

    i need help doing this question... a quadratic funtion has these characteristics axis of symmetry: -1 x=3 is the x- int y= 32 is the maximum value determine the y int of this parabola.

    asked by priya
  99. social studies

    Groupthink is likely to occur when: anger within the group has been growing. the need arises for a group opinion. almost no conflict is expressed within the group. the group is composed of an even number of people.

    asked by dina
  100. Math

    I'm doing a vector problem which involves two forces with an angle of 30 degrees between them acting on an object. I think that I should draw my vector diagram with the vectors coming out of the object while my friend thinks that the vectors should point

    asked by Kate
  101. Chemistry

    Calculate the number of molecules in 3.1466x10^1 grams of sulfur dioxide, SO2

    asked by HELP
  102. Phy. Sci

    A phase change form a gas to a soild?

    asked by Wyatt
  103. statistics

    Consider a normal distribution with mean 30 and standard deviation 6. What is the probability a value selected at random from this distribution is greater than 30? (Round your answer to two decimal places.)

    asked by Anonymous
  104. maths

    3. From a set of 1000 observations known to be normally distributed, the mean is 534 cm and SD is 13.5 cm. How many observations are likely to exceed 561 cm? How many will be between 520.5 cm and 547.5 cm? Between what limits will the middle 50% of the

    asked by nimisha
  105. lenguage poetry

    It hills bent .law within my reach How many fats this line contain 5, 4, 6, 7,

    asked by luis
  106. Chemistry

    To make the following saline solution(375ml 0.5%w/v sodium chloride) what would you weight out? what volume of water would you use?

    asked by Danny
  107. chemistry

    According to the following reaction, how many grams of copper(II) chloride are necessary to form 0.984 moles silver chloride? silver nitrate (aq) + copper(II) chloride (s) silver chloride (s) + copper(II) nitrate (aq)

    asked by Gina
  108. statistics

    1.test wheter these samples represent populations that are different from the general population- sample of 10 with a mean of 44 and sample of 1 with a mean of 48. 2. The general population of individuals has a mean of 40 , a deviation of 6, and follows a

    asked by Stephanie
  109. english

    I'm writing my paper on types of style such as metaphors, similies, personification, symbol for the book number the stars. What is a creative title for my paper.

    asked by alainia
  110. College Physics

    A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)?.

    asked by Ryan
  111. repost math question

    An aircraft flew 6 hours with the wind. The return trip took 7 hours against the wind. If the speed of the plane in still air is 276 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air. The wind soeed

    asked by Anonymous
  112. Chemistry

    A calorimeter contains 21.0 mL of water at 14.0 degreesC. When 1.90 g of X (a substance with a molar mass of 70.0 g/mol) is added, it dissolves via the reaction X(s)+H_2O(l)reacts to make X(aq) and the temperature of the solution increases to 28.5degreesC.

    asked by Ellen
  113. English

    Is it ok if I use a quote to begin my reasearch paper

    asked by renee
  114. Social Studies

    Compare and Contrast the Virginia Plan and the New Jersey Plan and who were the Founding Fathers that were on each side?

    asked by Bobby
  115. math

    how would I check this on my own? I know you put numbers in the place of the letters but when I do that I come up with my moms answer. this is what i have when I check my work. p=-2 q=3 6*(-2)*3 =-36 but 3(-2)(-2*3)=36 could you tell me what i'm doing

    asked by TiffanyJ
  116. physics

    A dart is thrown horizontally with an initial speed of 6 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.29 s later. Neglect air resistance. (a) What is the distance PQ? (b) How far away from the

    asked by Connie
  117. physics

    an elevator lifts 4 person each with an average mass of 72 kg to a height of of 20 metre in one minute calculate 1 the work done by the lift and 2 the power exerted

    asked by kashib
  118. Chemistry

    What is the change in internal energy (in J) of a system that absorbs 0.677 kJ of heat from its surroundings and has 0.438 kcal of work done on it?

    asked by Nevaeh
  119. Math

    For what values of k does the function f(x)=(k+1)x^2+2kx+k-1 have no zeros? One zero? Two zeros?

    asked by Emily
  120. math

    What's ab squared also explain how it is

    asked by Fghl
  121. science

    The most useful indicator of degree of democracy reached by a particular society is whether it has a a) civilian government b) formal method whereby people can effect changes in government policy c) system of government checks and balances d) system of

    asked by Rebecca
  122. English

    This sentence is a fragment, how can I fix it?? Thanks! In order to stick to my topic, I discussed several ways that students can express their individuality other than their clothing, such as their hair, or their personality.

    asked by Sarah
  123. statistics

    the team on the data set that had the most wins in the AL for this year was the Chicago White Sox and their salary (per million) was $75.2 and in the NL it was the St. Louis Cardinals with a salary of $92.1 million. By comparing this we can see if the

    asked by Anonymous
  124. Making and Ad

    I need to come up with an ad for medicine, what could I do? Feeling weak, stomach pain, headache... Try our fast relieving pain Tynenol. Feel good wherever you go! What could be something better than what I have here? My ad seems to be a bit boring, how

    asked by Teressa
  125. chemistry

    a sample of iron occupies a volume of 10.0cm3. if the density of iron is 7.9 g/cm3 what is the mass of the sample

    asked by Anonymous
  126. Calculus

    Find the area between the curves y=(x^3)-10(x^2)+24x and y=(-x^3)+10(x^2)-24x

    asked by Hannah
  127. 6th grade literature

    Please explain what does it mean to develop a basic literature element chart? Secondly, what are literary elements?

    asked by Lynn
  128. trig

    Suppose that sin x = 1/5 and cos y = 2/3, and x and y are each angles in Quadrant 1. Determine sin(x+y).

    asked by jj reddick
  129. algebra

    x-sqrt(x)-2 = 0 how would i start this problem?

    asked by amy
  130. Math

    f(x) = 4x2 - 7x, g(x) = x2 - 3x - 28 Find f/g.

    asked by Ford
  131. Math

    Given f(x) = 5x - 2 and g(x) = -8x + 9, find (f - g)(x).

    asked by Ford
  132. econmics

    The MorTex Company assembles garments entirely by hand even though a textile ma-chine exists that can assemble garments faster than a human can. Workers cost $ 50 per day, and each additional laborer can produce 200 more units per day ( i. e., marginal

    asked by raja
  133. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  134. College Chemisty

    The pH of water collected in a stormwater run-off downstream from a Union Carbide chemical factory is 4.82. Calculate the H+ ion concentration of rainwater. The problem may start with: pH= -log H+ = 4.82. The answer is 1.5x10 power -5. Again, Can you

    asked by Elleni
  135. physics

    what are the better way to calculate the coefficient of friction

    asked by hanadi
  136. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  137. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  138. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  139. College Algebra

    I could not figure out the answer to this Problem: The quadratic function f(x)= -2x^2 =4x +3 can be used to solve the following inequality: -2x^2 -4x < -3 First use the Quadratic Formula to find the x-intercept of f. This problem asks that the answer be

    asked by Lee
  140. Chemistry

    I..don't understand any of this: 43. How many moles are in 25.0 grams of potassium? Show your work and round your answer to the appropriate number of significant figures. Please, please help with this! Thanks -MC

    asked by mysterychicken
  141. manual indexes

    What is the major disadvantage of manual indexes?

    asked by leo
  142. english

    I'm a 8th grade student and i need to write a Proffesional Business letter to My 7th grade english Teacher can you help?

    asked by Abigail
  143. Programming

    This is a visual basics program issue. The problem is: Table 4.7 contains information on several states. Write a program that requests a state and category (flower, motto and nickname) as input and displays the requested information. If the state or

    asked by Lee
  144. CALCULUS

    Consider the function: f(x) = x/(x^2 + 2) (a) Determine the intervals on which the function is concave up. Enter the leftmost interval first (e.g. (1,2) would come before (3,4)). (b) Determine the intervals on which the function is concave down. Enter the

    asked by Help asap!! plz
  145. math

    simplify expression 3(-p)(-2q) i think it is 6pq my mom thinks its -6pq which is it

    asked by TiffanyJ
  146. college

    I purchased a $1,000 five percent coupon bond that matures in 10 years. How much would my bond be worth if interest rates fall to 4% the day after I purchase the bond? What would the bond be worth in one year if interest rates fell to 4% at that point?

    asked by sweet
  147. social studies

    can this be my answer? Durham would not have been more guarded about what he said, as modern politicians often are, because at his time, there were very few policies which helped. For example, today’s politicians might say something, but they usually

    asked by pkd
  148. Chemistry

    41. A neutron atom of potassium has an atomic number of 19 and an atomic mass number of 39. Find its number of protons, neutrons, and electrons. This is what I got- Protons: 19 Neutrons: 20 Electrons: ? Thanks -MC

    asked by mysterychicken
  149. Calc- Derivatives

    So, I have a bunch of derivative problems for homework and the only resource I have is the textbook, since we don't have notes. I have just started and want to make sure I'm doing them correctly. Our teacher said we do not have to simplify them either, so

    asked by Chelsea
  150. health

    how can systems thinking improve public health efforts? which systems model is most effective and why?

    asked by candace
  151. physical science

    If a 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power company charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days?

    asked by beebop
  152. Algebra

    (x-6)^2=1? Give exact and approximate solutions to three decimal places

    asked by Angel
  153. engineering practise

    plz give me information about electrodes used in arc welding...?

    asked by daani
  154. engineering practise

    plz give hazards of cylinder used in gas welding and plz give information about oxy-acetylene welding..

    asked by daani
  155. engineering practise

    plz give hazards of cylinder used in gas welding and plz give information about oxy-acetylene welding..

    asked by daani
  156. medical coding

    Witch one of the following subcategories of the E/M section has separate codes for new and establised patients? A.office and other outpatients B. Hospital observation services C. initial inpatient consultation D. Emergency Department services

    asked by Robin
  157. calculus

    if f(x)=(2^(1/2))(x^3-6x^(1/2)+7), find f'(9)

    asked by ucsb
  158. 5th math

    my teacher want me to show the work on this problem like < or > 3.67---3.7 shwo want to know how i got the answer cause, i know that 3.67 is greater than 3.7 she said where you work? can you show me one more time .?

    asked by pat
  159. adult education

    we have a ring that has an indian head marking on the inside of the ring, do you know what it means, who made it, how old it is, or what its actually called so we can search the meaning ?

    asked by richard
  160. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  161. math

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

    asked by peter
  162. Physics

    A skier is gliding along at 5.0m/s on horizontal, frictionless snow. He suddenly starts down a 13 degrees incline. His speed at the bottom is 12m/s. What is the length of the incline? How long does it take him to reach the bottom?

    asked by Jennifer
  163. Maths

    The length and width of a rectangle are in ratio 11:7. If its perimeter equals 144m, find the length and width?

    asked by Jannie
  164. Physics

    What force is required to accelerate an object of 1.484x10^0 kg over a frictionless surface at -2.3580x10^0 m/s2 expressed to three significant figures.

    asked by dylan
  165. Biology

    Which process may not reduce the toxicity of a chemical in the body? Sequestration Chemical bond formation Elimination Blood flow to tissue/organ

    asked by Anonymous
  166. Physics

    An object with a mass of 2.489x10^1 kg is subjected to a force of 4.8124x10^2 N directed at an angle of 2.819x10^1 degrees from the x axis. A second force of 2.84529x10^3 N acting in the negative X directions is also applied to the object. To two

    asked by PHYSICS HELP PLS
  167. Physics

    An object with a mass of 2.728x10^1 kg is subjected to a force of 1.31851x10^3 N directed at an angle of 1.056x10^1 degrees from the x axis. A second force of 1.93826x10^3 N acting in the negative Y directions is also applied to the object. To two

    asked by christine
  168. 2nd grade

    Anybody doing volunteer work look like a hero. edit this sentence so the subject and verb agree

    asked by Anonymous
  169. Maths

    Find all the roots of the equation Sin(2x)=1/2 in the range of -pi

    asked by Jack
  170. Statistics

    Indicate with Yes or No whether the given statement could apply to a data set consisting of 1,000 values that are all different. a.The 29th percentile is greater than the 30th percentile.b.The median is greater than the first quartile.c.The third quartile

    asked by Anonymous
  171. history

    describe the culture of consumption during the eisenhower administration. How do you thinksuch large scale, newfound getting and spending culture influenced peoples feelings about America?

    asked by cristee
  172. algebra

    How do I figure (17 + a)^ = 2209 I know a = 30, but how do I get the answer?

    asked by jane
  173. Medical Terminology

    A patient has calculi present in the kidney. This statement indicates which diagnosis? A)Nephrolithiasis B)Proteinuria C)Renal cell carcinoma D)Nephropathy

    asked by Stephany
  174. Med Terminology

    A patient underwent dialysis for CRF. What does this abbreviation represent? A-Culture and sensitivity B-Cystoscopic examination C-Chronic renal failure D-Catherization

    asked by Stephany
  175. Finance

    Given that the preferred shares on the balance sheet is $2100,000 , have a stated value of $21, callable at $22.50, and pay annual dividend of $2 , and are non-voting. What is the value of redemption premium?

    asked by Aq
  176. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  177. English Research

    Would the online National Geographic site be a periodical or a website? I'm trying to cite a source on an article from the site,but I don't know if it's a website or a periodical,it seems like both.

    asked by Elizabeth
  178. Calculus

    Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=x^2, x=y^2, about the axis x=-5... i just cant seemt to get the numbers to work out well and get answer please help...thanks

    asked by Adam
  179. social studies

    my last question was actually about a guy named Lord Durham who said that the French should speak an learn English values (culture, etc). So, why do u think he not have been more guarded about what he said, as modern politicians often are.

    asked by pkd
  180. Amer. Government

    What are the differences between Federalists and Anti-Federalists? Please include the differences and concerns of each group and also some of the founding fathers of each group. Also include the role the Bill of Rights played in helping the Constitution to

    asked by Rhianna
  181. 8th Grade Writing

    Does this Introduction sound fine for an Argument essay? Forests probide many supplies that are essential in our lives. They give us oxygen, wood fiber for paper, herbs for medicine, and timber for building structures. Forest materials are so necessary

    asked by Elizabeth
  182. health

    which system model is most effective in public health and why?

    asked by candace
  183. gallup high school

    what is the definition of radius?

    asked by jacob tom
  184. math

    2x(3y]00000;-;]'[- 0][p ][

    asked by Name
  185. english

    How can I make this idea into a good thesis? Workplace safety is still a huge concern as many youth are involved in work injuries or fatalities.

    asked by thesis
  186. Biology

    What are the inter-relationships with these organelles and why? 1) Nucleus 2) Golgi apparatus 3) Lysosome 4) Cytoskeleton 5) Centriole By inter-relationships, I mean this: EXAMPLE: Chloroplast and mitochondria both involve energy transformations

    asked by Anthony
  187. Chemistry

    What is the molecular mass of: C19H97Cl35

    asked by stacy
  188. Chemistry

    How many moles of NF3 are in 850.49 grams of nitrogen triflouride

    asked by dylan
  189. Calc

    Differentiate. y = (cx)/(1 + cx) g(x) = 1 + cx f(x) = cx Using the quotient rule: y' = [(1 + cx)(f') - (cx)(g')]/(1 + cx)^2 How do you find f' and g' when there is more than one variable? Having a C and an X?

    asked by Chelsea
  190. The Sniper

    Has anyone read the story The Sniper, the sniper ends up killing his own brother at the end. One question I don't get is that how do I justify the use of irony and suspense in this story?

    asked by Erika
  191. Calculus

    Determine whether the integral is divergent or convergent. If it is convergent, evaluate it and enter that value as your answer. If it diverges to infinity, state your answer as "INF" (without the quotation marks). If it diverges to negative infinity,

    asked by Hannah
  192. science

    funtions of skeletor and muscles

    asked by Anonymous
  193. Signals

    I have the following information: H(jw) = (3+jw)/(e^(2jw)) f(t) = e^(-3t)u(t) Therefore, F(w) = 1/(3+jw) Y(w) = H(w)*F(w) = 1/(e^(2jw)) I have to find y(t), but I am having troubling finding.

    asked by Josh
  194. social studies

    In the hostile environment form of sexual harassment, the harassed person: does not get a fair hearing for the complaint. suffers from a job loss for having filed a complaint. suffers from a job loss for refusing to grant sexual favors. may not necessarily

    asked by dina
  195. Math

    Find (f ∙ g)(5) given f(x) = x - 4 and g(x) = -2x2 + 11x - 3

    asked by Ford
  196. com156

    please help can you give any idea how to write an outline for renting an apartment is a better option than buying a house

    asked by Anonymous
  197. Math

    find the z-scorerelated to the raw score,mean,and standard deviation. Assume a normal probability distribution Raw score= 56u=50,0=4

    asked by Mary
  198. Phychology

    expectation plays an importand role in?

    asked by Michelle
  199. Philosophy

    Construct natural deduction proofs for each of the following. 118.2 p&(q&r).'. q 118.4 .'. ¬(p&(q&¬p)) 118.10 q .'. ¬(¬p&¬q) 122.3* p " q, ¬p " r .'.¬q " r 122.7* p " q, ¬(p " r) .'. ¬(q " r) 122.10 p " q, ¬q .'. ¬p

    asked by Maggie
  200. bullies

    How do you get away from it

    asked by panda
  201. 11th grade physics

    calculating the total distance ???

    asked by Anonymous
  202. Philosophy

    Prove informally, by employing correct definitions and principles of reasoning, that the following are true. 1/ Every formula implies itself. (That is, A implies A . Hint: For this one you will need to employ the definition of interpretation.) 2/ If set S

    asked by Maggie
  203. Philosophy

    Symbolize these arguments and display truth trees to evaluate the resulting argument forms for validity. If the argument form is invalid, describe (in English) the conditions under which the premises would be true but the conclusion false. 99.32 There will

    asked by Maggie
  204. Science

    much force is Mike applying to the 1000 kg car to make it accelerate at a rate of .05 m/s2? I need help understanding this.. I'm really bad at science...>.

    asked by Chan
  205. hsm220

    what arethe four steps an organization should take to change its personality profile. What should the organization consider before developing such a plan?

    asked by brown
  206. earth science

    state how the sun generates the energy that it radiates away as its luminosity.

    asked by dede
  207. accounting

    2008 = 8,700 2009 = 9,400 2010 = 10,100 2011 = Expected? What is the expected change for 2007? I know the increase is 700 for each year, but how do I calculate the growth rate for this question?

    asked by Any help me!
  208. Math

    4xwith an xponent of 5 __________________________ 6x with an exponentof 7

    asked by Casie
  209. Science

    If CH3COOH is an acid, shouldn't it begin with hydrogen instead of ending with it?

    asked by Jennifer
  210. Stat

    For a sample of 200 patients diagnosed with allergies, 25 were men. What is the 90% confidence interval for the population proportion? I set this up and got the answer of .087 -.16. The book has .091-.17. Could use help---I must be missing something.

    asked by Lori
  211. Chemistry

    If aluminum hydroxide -Al(OH)3- is an acid, why does it end with hydroxide instead of beginning with hydrogen?

    asked by Jennifer
  212. Language

    Whrite a sentence to explain what each metaphor means 1. while Adam held the weight overhead, his arms were bands of steel.

    asked by asia
  213. language

    some one help please..

    asked by asia
  214. Math - Solving equation (check )

    7 = (210+88t)/(2(sqrt(210t+44t^2))) Is t= 1.0479....? I got the denominator multiplied by 7 and squared both sides to eliminate the sqrt and then simplified, used the quadratic formula to find the values but since the questions is about squirrels growth it

    asked by Anonymous
  215. stats

    In order to make sure that their bags of chips are of sufficient weight, the Chipper Chip Company try to fill their 200 gram bags of chips with more than 203 grams. You have been given the task of investgating what proportion of bags produced do have over

    asked by lollzzz
  216. 8th Grade geography

    How did war with the french affect the colony?

    asked by Dasia
  217. history

    when did mahathma gandhi died

    asked by chandra
  218. 5th grade

    how I can do a essay for Salvador Dali ?

    asked by Christian
  219. chemistry

    3.0 g Al +HNO3 > Al(NO3)3 + H2 =how many liters

    asked by kelly
  220. calculus

    Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x) , y=3 and 2y+3x=6.

    asked by michael
  221. Medical Terminology

    A pyelogram was performed on a 43-year old male patient. The root word means? A-trough,basin,pelvis. B-ureter,urethra C-bladder,urine D-kidney,medulla

    asked by Stacy
  222. Medical Terminology

    A patient states that he gets up three or more times per niht to void. What type of condition does this symptom indicate? A-Uremia B-Calculi C-Stricture D-Nocturia

    asked by Stacy
  223. algebra

    joshua had 5/6 of a tank of gas when he started his trip. if he used 1/10 of what was there what part of a tank was left at the end of the trip?

    asked by casey
  224. calcu.us

    If F(x) = f( 5f( 3f( x ))), where f(0) = 0 and f '(0) = 3, find F '(0).

    asked by safa
  225. math

    find the cube of 15 5/8 X 11 7/8 X 3

    asked by cindy
  226. 10th grade

    Identify the word in parenthesis () as either a predicate nominative or a predicate adjective. (Each question is worth one point) It was a (prize) for the best seller.

    asked by jamelle
  227. algebra

    multiply: (w+p)(w^2-wp+p^2)

    asked by ASHLY
  228. algebra

    Find the variation constant and an equation of variation where y varies directly as x and y=16 when x=8 The variation constant is k=? The equation of variation is y=?

    asked by ASHLY
  229. social studies

    at the time of the 1837 Rebellions, why would one not get support like modern politicians do?

    asked by pkd
  230. Math

    What is the final amount if you earn 5% interest compounded annually on $31,000 for 29 years

    asked by Anthony
  231. math

    Which of the following is true about the absolute value of -6? (Points : 2) |-6| = -6 |-6| < -6 |-6| > -6 |-6| = 0

    asked by paully
  232. Finance

    Consider the following scenario: John buys a house for $150,000 and takes out a five year adjustable rate mortgage with a beginning rate of 6%. He makes annual payments rather than monthly payments. Unfortunately for John, interest rates go up by 1% for

    asked by sweet
  233. American Government

    Do you believe that the United States Government is following the Constitutions five basic principles of Popular Sovereignty, Limited Government, Seperation of Powers, Checks and Balances, and Federalism? List your reasoning for each please!

    asked by Amy
  234. science

    Name some ways the wind and rain change the Earth's top layer(soil).tell why?

    asked by tim
  235. Social Studies

    In your opinion how do you think the Constitution promotes the public good?

    asked by Jared
  236. General

    Why don't my questions never get answered even after I post them several times.

    asked by Annonymous
  237. math

    if 6 (y+5)=78 what is y?

    asked by Roary
  238. history

    what act can you remember and celebrate dr.kings legacy

    asked by bianca
  239. biology

    why must the release of energy during the cellular process in which ATP is made from glucose take place in small steps?

    asked by brianna
  240. IT

    Service Request SR-kf-013

    asked by james
  241. math

    How many multiple of 3 between 1-22 are even? A-7 B-5 C-3 D-1p[kiiiii0-=kopiklp,;ll[o

    asked by Name
  242. english

    hello im a guy from Denmark, i have wrote an article, i'd be happy if someone could look at it. if yes send ur mail and ima send it.

    asked by mojtaba