Questions Asked on
June 18, 2015

  1. PHYSICS

    27. Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction thrown.

    asked by GILL
  2. Chrmistry

    Aqueous potassium phosphate was mixed with aqueous magnesium chloride, and a crystallized magnesium phosphate product was formed. Consider the other product and its phase, and then write the balanced molecular equation for this precipitation reaction

    asked by Beverly
  3. Chemistry

    Ethanol is the active ingredient of alcoholic beverages. It is also s a possible replacement for gasoline. The complete combustion of ethanol forms carbon dioxide and water. CH3CH2OH + O2 => CO2 + H2O Balance the equation. What mass of carbon dioxide is

    asked by Priscilla
  4. PreChem

    Classify each of the reactions. precipitation, acid-base neutralization, redox C2H4(g)+3O2(g)----> 2CO2(g)+2H2O(l) Cu(s)+FeCl2(aq)---->Fe(s)+CuCl2(aq) HI(aq)+LiOH(aq)---->H2O(l)+LiI(aq)

    asked by Noah
  5. science

    this is bio what would happen to the forest environnment if the lynx started being hunted for their skins?

    asked by Stoof
  6. Algebra

    Find all complex numbers $z$ such that \[ |z|^2-2\bar z+iz=2i. \]

    asked by XXX
  7. physics

    In the following situations identify the agent exerting the force and the object on which it acts .State the effect and kind of force in each case. a>Falling of rain drops. b>A horse pulling a cart. c>A car coming to rest once its engine is switched off.

    asked by deepti
  8. Statistics

    A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of distributions are normal distribution, is there evidence that the treatment is effective? What is the Null and alternative hypothesis.

    asked by James
  9. Calculus

    A 0.9 ml dose of a drug is injected into a patient steadily for half a second. At the end of this time, the quantity, Q, of the drug in the body starts to decay exponentially at a continuous rate of 0.4% per second. Using formulas, express Q as a

    asked by Devon
  10. Public speaking

    Saying "gonna" instead of "going to" is an issue of: A. Body movement B. Eye contact C. Articulation D. Timing

    asked by Alex
  11. Math Trigonometry

    A man is 6 ft. tall casts a shadow of 8 ft. find the angle of elevation of the sun.

    asked by Shelou
  12. Geography

    Describe service delivery protest in your community or neighbourhood about one page

    asked by Tumelo
  13. appliances

    What is the purpose of the external jumper wire on a variable-speed reversing drill switch

    asked by Lock
  14. Math (PLEASE HELP!)

    1. The UV index on a sunny day can be modelled by the function y= -0.15(x-13)^2+7.6 , where x represents the time of day on a 24-h clock and f(x) represents the UV index. At what time(s) was the UV index 7? 2. Determine if each system has one, two, or no

    asked by Adam
  15. geometry

    box of cereal measures 10 in .wide.12in . high, 3in deep .all surfaces made of cardboard and total overlapping cardboard in the box is 7in squared , how much cardboard is used to make a cereal box including the amount of overlapping parts ?

    asked by nunu
  16. Criminal Justice

    Social Darwinism: A. explains corporate crime. B. is associated with Jacques Rousseau. C. supports aid to the disadvantaged. D. has as its credo the phrase "survival of the fittest." According to my book a,b,c are wrong. And answer D im not sure i don't

    asked by Amy
  17. Math Geometry

    The sun rises at 6am; At noon the sun is directly overhead. The height of a pole is 8m tall. What is the length of the shadow at 11am?

    asked by Seany
  18. saraswathi vidyalaya

    find all the zeroes of 2x4 - 9x3 + 5x2 + 3x-1 if two of its zeroes are 2+root3 and 2-root3

    asked by paru
  19. maths

    Two men and six boys can cut a field in 3hours. If the men work at 3/2 times that of the boys, how many men are required to cut the field in 2hrs.

    asked by jay
  20. Narayana

    A triangle whose sides ABC a line Ap drawn to the side BC such that ap is not a median or altetude?

    asked by Dheeraj
  21. ncedo senior secondary school economics

    Detailed explanation with graphs of how the price of milk would have been determined in the absence of government involvement in the market

    asked by sanelisiwe dyasi
  22. algebra

    Alice puts money into two accounts, one with 2% annual interest and another with 3% annual interest. She invests 3 times as much in the higher yielding account as she does in the lower yielding account. If her total interest for the year is $27.50, how

    asked by t
  23. math

    Last month, Bill's electric bill was $80.77. This month, Bill's bill was $69.06. What is the percent decrease? 0.01 0.16 0.15 0.14 my answer is 0.15

    asked by Lucy
  24. math

    Two men and six boys can cut a field in 3 hours. If the men work at 3/2 times that of the boys, how many men are required to cut the field in 2hours?

    asked by jay
  25. Biology -- repost

    (To whoever posted the first time -- DO NOT use any tutor's name where YOUR name should be. Impersonation of a tutor is not allowed on this website.) What are the biological terms of the following? 1.Reproductive structure in breadmould 2.acquired immunity

    asked by Writeacher
  26. Algebra 2

    I'm confused on how to do this. 1.) Show that f(x)=x^4 -2x +8 has nonzero constant fourth-order differences. SIMPLIFY THE EXPRESSION: (HOW?) 2.) 8^log(8)^x eight log root 8 ^x (here it is written if you can't understand the actual expression. It is

    asked by Jake
  27. english

    A prepositional phrase modifies a word and relates that word to the preposition's _____.

    asked by jacob
  28. Math (PLEASE HELP!)

    1. The sum of the squares of two numbers is 74 and the difference of their squares is 24. a) What system of equations models this situation? b) What are the two numbers? 2. For what value of b will the line y= -2x+b be tangent to the parabola y=3x^2+4x-1?

    asked by Anthony
  29. Math (Need help Urgent)

    1. Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 . If the path of the

    asked by Mary
  30. Physics

    A typical tumor treated with radiotherapy may receive 400 Gy per 250g. How many disintegrations of caesium-137 atoms are required to provide that absorbed dose? Help would be appreciated!

    asked by Please help!
  31. English

    1. short winter coat 2. long winter coat 3. medium winter coat 4. long-sleeved shirt 5. short-sleeved shirt 6. medium-sleeved shirt ============== Are the expressions all used? Do we have some other expressions?

    asked by rfvv
  32. Alpha

    mr brown borrowed $5,340 from a bank at 10% aunnum simplr interest for 9 years. the sum of the money paid in interest to the bank and the total amount of money repaid to the bank

    asked by megan
  33. Ethics

    Traits of character that dispose a person to act in a moral fashion are typically referred to as:

    asked by Anonymous
  34. UNIBEN Demonstration secondary school, benin city,Nigeria

    how to calculate mole fraction

    asked by david
  35. Canadian History

    Do you know what the roots of early animosity leading to the cold war is? Plz

    asked by Ryleigh YO
  36. improving writing

    I have written two paragraph about the problem and solution plz tell me is it ok if any grammatical mistake or punctuation error is then plz tell me. the content of this paragraph meets the desired topic as per the exam requirements. plz, guide . below is

    asked by yogita
  37. Math (PLEASE HELP!)

    1. Solve the system of equations by elimination.y=2x^2-2x-3 and y=-x^2-2x-3 2.The system of equations y=-5(x+4)^2-4 and y=8x^2+64x+124 has _____ solution(s). 3. Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line

    asked by Kaitlin
  38. Maths

    A hand fan is made by stitching 6 equal size triangular strips of two different types. The dimensions of equal strips are 25cm, 25 cm and 14 cm.Find the area of each type of paper needed to make the hand fan.

    asked by Neha
  39. B. My gange girls sen sec school (science)

    A hot plate of an electric oven connected to a 220V line has two resistance coils A and B, each of 24 ohms resistance, which may be used separately, in series, or in parallel. What are the currents in the cases?

    asked by Radhika
  40. biology help

    Describe the hormeostatic control that occurs in the body of a normal person to increase blood glucose level when they are low

    asked by promice
  41. psy410

    parkinson's disease huntingtons disease and alzheimers disease are all types of major neurocognitive disorder

    asked by Anonymous
  42. Chemistry

    PLS HELP ME(1)Write a balanced equation in each case dilute hydrochloric reacts with[i]ZnCO3[ii]CuCO3 (2)Discuss how hydrocarbons contribute to the formation of ozone in the atmosphere.I'M CONFUSED I NEED HELP!

    asked by Anonymous
  43. psychology

    The biosocial approach suggests that gender differences are based on: a. the hormone and neurological differences between men and women. b. how men and women think about their environment. c. the physical ability of men to protect the home and of women to

    asked by Lucy
  44. chemistry

    A sample of gas has an initial volume of 20.9 L at a pressure of 1.4 atm If the sample is compressed to a volume of 12.9 L: , what will its pressure be? (Assume constant temperature.) Thank you

    asked by ap
  45. Language Arts

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. While being an extra on a movie set may seem fun and

    asked by Ethan
  46. English

    I'm looking for a pair of gloves. 1. Are they for you? 2. Is it for you? ======================== Which response is right?

    asked by rfvv
  47. English

    1. This is a long-sleeved shirt. 2. This is a longsleeved shirt. 3. This is a long-sleeve shirt. 4. This is a longsleeve shirt. =================== Which ones are grammatical?

    asked by rfvv
  48. physics

    A student of weight 810 N was sent to another planet called Nerdland. If Nerdland has a mass that is 4 X the mass of the earth and a radius that is 1/2 the radius of the earth, what would be the mass in kg of the student when on Nerdland? what would be the

    asked by Anonymous
  49. Chemistry

    (1)Write a balanced equation in each case dilute htdrochloric reacts with[i]ZnCO3[ii]CuCO3 (2)Discuss how hydrocarbons contribute to the formation of ozone in the atmosphere

    asked by Tazannia Tennyson
  50. statistics

    P( 1.05 < Z < 2.05) Need help solving please

    asked by belle
  51. math

    A fisherman has estimated that it takes 6 minutes to paint each square foot of the hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of two sides, each 31.5 feet by 8.00 feet? 1512.0 hours

    asked by Lucy
  52. math

    can someone elxplai to me how to solve this differential equation. dy/dx= (x^2+3y^2)/2xy

    asked by Anonymous
  53. Languarge Arts

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. When it looked like all hope was lost for winning the

    asked by Ethan
  54. English

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. The group of friends _________ around the coffee shop

    asked by Ethan
  55. Language Arts

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. The fact that the lottery winner flaunted his newly

    asked by Ethan
  56. LA

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. While most people in Los Angeles will go to a Dodger's

    asked by Ethan
  57. System of Equation

    ___________ involves isolating the variable in one equation and replacing the same variable in the other equation with this expression.

    asked by Amber
  58. finance-1

    the Herandez family is facing some financial pressure with a combination of 66000 dollars of income.

    asked by tee
  59. English

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. While most museum visitors displayed respect for the

    asked by Ethan
  60. English

    Word Bank: deliberately, derision, despair, diligent, fatigue, felicitous, fervent, impudent, insolence, keen, lingered, meagerness, merit, mock, obliged, resentful, tedious, terse, treacherous, vast. 1. When it looked like all hope was lost for winning

    asked by Ethan
  61. Maths

    Bobbt jannet made jam from 8kg strawberries and 4 kg sugar, how much did it cost to make 1kg of jam if 1kg of strawberries cost 6.50 and 1 kg of sugar cost 2.10?

    asked by Nicold
  62. English

    I'm looking for a shirt for my dad. =============================== Does 'for my dad' modify 'shirt' or 'looking'? Is 'for my dad' an adjective phrase or an adverbial phrase?

    asked by rfvv
  63. math

    round off the following to nearest 10000 1,82,937

    asked by akhila
  64. algebra

    Shoe O Rama is having a 20 % off sale this friday. Which equation below shows how to find the sale price, s, as a function of the original price, p?

    asked by Marc
  65. Crestwood

    A bag contains 3 yellow, 4 white, and 8 blue marbles. How many samples of 2 marbles are possible?

    asked by Libby
  66. psy 410

    Which of the following is NOT usually one of the effects of abuse on a child?

    asked by gail
  67. Math (PLEASE HELP!)

    1. Suppose the height, h, in feet, of a trampolinist above the ground during one bounce is modelled by the quadratic function h(t) = -16t2 + 42t + 3.75 . For what period of time is the trampolinist at least 22 ft above the ground? Round your answers to the

    asked by Ashley
  68. Math (Need help Urgent)

    1. Graph the solution to the inequality y ≤ -2(x - 2)2 - 2 ?

    asked by Bailey
  69. physics

    A body is projected at an angle of 30degree to the horizontal with a velocity of 150metre per seconds.Calculate the time it takes to reach the greatest height,take g=10metre per seconds square and neglect air resistance.

    asked by scott
  70. stats

    A sample has a mean of M = 73 and a standard deviation of s = 5

    asked by dj
  71. Math

    the ratio of Simone's pocket money to Fiona's pocket money was 2:3. After Fiona had received $5 from her mother, the ratio of Simone's pocket money to Fiona's pocket money became 4:7. how much pocket money did both of them have at first?

    asked by Minhthaominh
  72. medical

    For this assignment, I have to diagnose a list of patients. 1. 14 year old female feels a tightness in her chest when she gets nervous. Also, she starts wheezing when she exercises while being nervous as well as feels a sharp pain in stomach region. I

    asked by Ashley
  73. math

    My digits are 6,0, and 5. I'm not divisible by 5. What number am I

    asked by CJ