Posts by Reem

Total # Posts: 63

  1. Physics

    From the ideal gas law, calculate the volume per helium atom in a litre of helium gas kept at room temperature and atmospheric pressure. Additionally, calculate the length of the side of a cube with this volume.
  2. chemistry

    5. One hundred milligram of caffeine is dissolved in 50 mL of water. a. How many mg of caffeine will remain in the water if you extract with 20 mL of methylene chloride? Show your calculations (KD = 4).b. How many mg of caffeine will remain in the water if you extract two ...
  3. chemistry

    Choose the pair of substances that are most likely to form a homogeneous solution. N2O4 and NH4Cl C6H14 and C10H20 LiBr and C5H12 C6H14 and H2O None of the pairs above will form a homogeneous solution.
  4. science

    A ball is dropped from a height of 10 meter.If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back?
  5. Math

    295
  6. Aths

    Convert the following measurements to the units specified
  7. Math

    This website is very very bad
  8. plz help me

    1)When a 10-kg crate is pushed across a frictionless horizontal floor with a force of 14 N, directed 25° below the horizontal, the magnitude of the normal force of the floor on the crate is (g = 10 m/s2): 2)A constant force of 2.8 N is exerted for 9.0 s on a 6.1-kg object ...
  9. plz help me

    A 2.8-kg block slides down a frictionless plane that makes an angle of 57° with the horizontal. The acceleration of the block is (g = 10 m/s2):
  10. Physics

    A 20kg box is being pushed across the floor by a constant force (90,0,0)N. The coefficient of kinetic friction for the table and box is 0.25. At t=5s the box is at location ( 8,2,-1)m, traveling with velocity (3,0,0) m/s. What is the position and velocity at t=5.6s?
  11. chemistry

    If 0.130 g of p-aminophenol is allowed to react with excess acetic anhydridre , what is the theoretical yield of acetaminophen in moles ?In grams?
  12. chemistry

    2) why should you use a minimum amount of water to rinse the conical vial while transferring the purified acetaminpophen to the hirsch funnel?
  13. English

    It reflects the out burst of the author's feelings and his anger towards the matter..
  14. physics

    When a pencil cell is released from a certain point on a inclined board,it travels a distance of 35cm on floor A before it comes to rest.when the same pencil cell is released from the same point on the same inclined board,it travels a distance of 20 cm on floor B before coming...
  15. psudoecode

    Design a sub-class of SimpleCalculator called Calculator using psudoecode that contains public methods named multiply(), and divide() and that defines private fields called num1 and num2. Each of the methods accepts two numeric arguments and returns a number that represents ...
  16. psudoecode

    Design a sub-class of SimpleCalculator called Calculator using psudoecode that contains public methods named multiply(), and divide() and that defines private fields called num1 and num2. Each of the methods accepts two numeric arguments and returns a number that represents ...
  17. Design

    Design a class named StockTransaction that holds a stock symbol (typically one to four characters), stock name, number of shares traded, and price per share. Include methods to set and get the values for each data field. Create the class diagram using UMLet and write the ...
  18. visual logic

    The Daily Gazette accepts classified ads in several categories. For most ads, the newspaper charges 10 cents per word for the first 50 words, and 8 cents per word for every word after that. Design Visual Logic Flowchart for a program that accepts data about an ad: customer ...
  19. pseudocode app

    STEVE i don't understand what should first write
  20. pseudocode app

    Write the pseudocode for an application that allows a user to enter the price of an item and computes 8 percent sales tax on the item and prints out for the user the original price and the tax but not the total.
  21. physics

    A particle moves along a straight line such that its position is defined by s = (t3 – 3 t2 + 2 ) m. Determine the velocity of the particle when t = 4 s.
  22. physics

    A=ax+by B=cx+dy If a = 5 , b = 5, c = 4 and d = 1. Find the direction of -A (in degrees): relative to +x
  23. physics

    choose the correct answer and why? a car starts from rest and reaches speed of 80 km/h in 16 s the average acceleration of the car is: a\ 0.7 m/s*2 b\1.4 m/s*2 c\5 m/s*2
  24. PHYSICS

    A girl rows 10 km downstream in 2 h. Her return trip takes 3 h. How fast is the current. in km/
  25. PHYSICS

    car traveling at 28.8 m/s hits a stone wall . The driver, who is wearing a shoulder harness and seat belt, moves forward 0.93 m as the car stops. Assuming his acceleration is uniform, find his average velocity during the collision. in m/S
  26. PHYSICS

    A girl rows 10 km downstream in 2 h. Her return trip takes 4 h. How fast can she row in still water. in km/h?
  27. PHYSICS

    Sun..BLANK....than moon. earth iS..BLANK... mercury.
  28. PHYSICS

    A woman wantes to drive 83 km in 2 h. If she average 42 km/h for the first 1.27 h, what average velocity must she maintain for the remaining time in km/h
  29. 7th Grade

    most thing we learn in 7th grade is about DNA and about eye and ear
  30. physics

    An object of mass m = 5 kg is suspended by three cables as shown in the figure. If the tension T2 in the horizontal cable is 12 N: 1) What is the angle ƒáƒn that the left cable makes with the horizontal?
  31. Physics

    (-2.0 μC+Ne = -8.0 μC-Ne) 2Ne= 6E-6 Ne= 3E-6 N= q/e =3E-6/1.6E-19 N= 1.9E13 electrons
  32. physic

    A 16 g piece of glass floats in bromoform (density = 2.89 g/ cm3) but sinks in bromobenzene (density = 1.52 g/ cm3), in which it has an appparent mass of 3.84.. What is the density of the glass ( in g/ cm3):
  33. grammar

    i want excersis
  34. PHY

    Ok..I think I know the answer, but I have not been able to find it anywhere... An electrical field is best described as A)fact B)hypothesis C)theory I think its a theory, but I would appreciate any help! Thank you.
  35. litreature - king lear

    who said this quotation in king lear: thou shoulds't not have been old till thou hadest been wise.
  36. language grammar

    thanks
  37. language grammar

    can someone explain to me what is inductive mood, subjunctive mood, andimparitive moodby giving examples. thanks
  38. calculus

    i need a real life application on parabola.
  39. litreature-vocab

    write sentence using each of the following 1) Affliction: means: effect 2) Pudder: means : turmoil 3) Scanted.means: negleacted. 4) Perpetual: means: ever lasting. 5) Entreat: means: plead, 6) sustain:
  40. litreature

    do you have any other sites
  41. litreature

    thanks
  42. litreature

    can you give me some multiple choice question about act 3 in king lear
  43. phsychology

    give example of external, unstable and specific explanation for disappointing event
  44. language

    any type of poem, and any thing you like
  45. language

    please help me to write a poem about friendshi, thanks
  46. litreature

    i don't want you to write me the journal i need only some hint to write
  47. litreature

    this journal is about king lear sorry i forget to mention it in the question thanks
  48. litreature

    please help me , this journal is for tomorow and i can't do it: the idea that power courrupts but suffering can redeem is fairly common plot support this theme, please answer as fast as you can . thank you
  49. litreature- king lear

    write a journal in king lear : the idea tha power corrupts but suffering can redeem is farily common plots support this theme
  50. english

    no thanks i found the answers
  51. english

    i can't find these answers, so can you please help me
  52. english

    in kinglear act 2: who is curan and what position does he hold in society. 2) edgar decide to disguie himself as what? 3) Regan and Goneril tell lear he is what type of a man
  53. calculus

    this is question no what?
  54. calculus

    please answer my question i need this hw for tomorow
  55. calculus

    find the vertex,focus, direction of the parabola. use a graphing utility to graphthe parabola: 1) x^2-2x+8y+9=0 2) y^2-4y-4y=0 3) x=1/4(y^2+2y+33) 4)(x+1/2)^2=4(y-1) 5) y= 1/4(x^2-2x+5)
  56. math

    what does Q1 and Q3 and interquartile range means
  57. biology

    where in a chloroplast would you find the highest concentration of protons?
  58. simple subjects,simple predicate

    what is simple subject and simple predicate
  59. Managerial Finance

    Taking into consideration that their is a restriction on additional borrowing ( covenant prohibit issunace od any additional debt) ?
  60. Managerial Finance

    If the company opts ( choose) not to expand, what is the implication for the company's future borrowing needs? What are the implications if company does expand ?
  61. Managerial Finance

    If the company opts ( choose) not to expand, what is the implication for the company's future borrowing needs? What are the implications if company does expand?
  62. Managerial Finance

    If the company opts ( choose) not to expand, what is the implication for the company's future borrowing needs? What are the implications if company does expand?
  63. Managerial Finance

    Dear sherill, In term of McKenzie case study from the corporate fiance by Ross . Do you have the answers to the remaning questions ?