Questions Asked on
June 24, 2009

  1. physics

    Use R = 8.2 × 10–5 m3 atm/mol K and NA = 6.02 × 1023 mol–1. The approximate number of air molecules in a 1 m3 volume at room temperature (300 K) and atomospheric pressure is:

    asked by sam
  2. pchem

    Use R = 8.2 × 10–5 m3 atm/mol K and NA = 6.02 × 1023 mol–1. The approximate number of air molecules in a 1 m3 volume at room temperature (300 K) and atomospheric pressure is: 41 450 2.5 × 1025 2.7 × 1026 5.4 × 1026

    asked by ben
  3. Physics

    An object is thrown upwards with a speed of 14.0 m/s. How long does it take to reach its maximum height

    asked by Anonymous
  4. physics

    A girl of mass 60 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 11 m/s, and it bounces back with this same speed. The ball is in contact with the wall 0.05 s. What is the average force exerted on the

    asked by larry
  5. Algebra

    Confused Please Help! Thanks! Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function C. f is neither odd nor even D. f is both odd and even

    asked by Laurie
  6. English

    1. She poured water all over my painting and ruined it. (Can we use 'spoiled' instead of 'ruined'?) 2. boil (water changes into moist) 2-2. boil (water changes into moisture) (Which definition is right?) 3. He doesn't care about his family. He is not

    asked by John
  7. math

    Solve the simultaneous equations: 3x-2y=19 2x+3y=4 Do i create a 3rd eq like this? 6x-4y=38 and where do i go from here?

    asked by Destiny
  8. chemistry

    When ice at 0C melts to liquid water at 0C, it absorbs 0.334 kj of heat per gram. Suppose the heat needed to melt 31.5 g of ice is absorbed from the water contained in a glass. If this water has a mass of .210 kg and a temperature of 21.0C, what is the

    asked by Capacino
  9. Physics

    Two identical perfectly smooth 71.2 N bowling balls 21.7 cm in diameter are hung together from the same hook by two massless wires. The bowling ball are just in contact with one another, and the angle between the two wires is 50 degrees. What is the force

    asked by Sarah
  10. Chemistry

    How do you identify the most stable carbocation? Is it the one with more bulky substituents?

    asked by Sam
  11. IT 210 Fundamentals of Programming with Algorithms

    Currency Conversion Test Procedure

    asked by Anonymous
  12. physics

    which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and

    asked by matt
  13. Managerial Economics

    I need help with these questions 1. The structure of the market in which JetBlue operates (i.e. how competitive is it--monopolistic, oligopolistic, competitive, monopolistically competitive)? If your company turns out to have several huge, unrelated

    asked by Linda
  14. Math

    For i = the square root of -1, if 3i (2 + 5i) = x + 6i, then x = ? A. –15 B. 5 C. 5i D. 15i E. 27i

    asked by Ron
  15. Algebra

    Find the equation of the line parallel to the line 3x + y = 5 and containing the point (4, – 2)

    asked by Bonnie
  16. physics- response to bobpursley

    which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and

    asked by matt
  17. English

    1. We see through/with our eyes. 2. We eat through/with our mouth. 3. We run through/with our legs. 4. We talk through/with our mouth. 5. We breathe through/with our nose. (Would you check the sentences? Which preposition do I have to use? Are both OK?) 6.

    asked by John
  18. Managerial Economics

    what advice would you give someone you believe to be excessively wary of risk?

    asked by Linda
  19. Scholarships

    I am applying for a scholarship that requires a 250 word essay on a topic of my choice. What kind of topics should i consider?

    asked by Amanda
  20. physics help!!!

    the volume occupied by 1kg of water at 100C and atmospheric pressure changes from 1L in the liquid phase to 1700L in the vapor phase. evaluate the difference in internal energy of 1kg of water vapor and 1kg of liquid water at the normal boiling point: So i

    asked by sarah
  21. Math

    Given f(x)= |x-1|/x^2-25 please determine the domain. Thank you! A. All real numbers except -5 and 5 B. All real numbers except -5,0 and 5 C. All real numbers except 0 D. All real numbers except 0 and 5

    asked by Crissy
  22. AED

    How might that be a solution to dealing with instruction and assessments of varying levels of language development?

    asked by NENAS
  23. HIS 135

    I am doing research on my final project in HIS 135, and I need to find an important social, economic, or political event that impacted the American people the most for the following years: 1950s, 1960s, 1970s, 1980s, 1990s. I don't mind doing the research

    asked by Punkie
  24. Algebra

    Let f(x) = 6/x-1 and g(x) = 1+3/x. Please fing the composite function. This is what i got so far. =f (1+3/x) =6/x-1 = =f (1+3/x) = 6/ [1+3/x - 1] How do I get the composite?

    asked by Stacy
  25. Physics

    I had to graph the following data and find the slope: Normal Force: Frictional Force: 0 0 2.0 0.6 6.0 1.8 9.0 2.7 10.0 3.0 The slope was 0.30. The question that I am confused on is what does this graph's slope represent?

    asked by Jack
  26. math115

    the following scores were recorded on a 200 point final examanation;193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. (A) FIND THE MEAN FINAL examination score (b) find the median final examination score (c) is the mean or median a more useful

    asked by Anonymous
  27. Algebra

    Let f(x) = 1 – 3x^2. Which of the following is true? Please give us a brief explanation. A. f is an odd function. B. f is an even function. C. f is neither odd nor even. D. f is both odd and even.

    asked by Jeanna
  28. Math

    The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle. (a) Find the center of the circle. (b) Find the length of the radius of the circle. (Note that this is a distance.) Give the exact answer. Show work. (c) State the equation of the

    asked by Kate
  29. elementry

    What characteristic do the numbers 8, 10, 15, 26, and 33 have that the numbers 5, 9, 16, 18, and 24 don’t have? (Hint: List the factors of the numbers.) Give two more numbers that have this characteristic.

    asked by Anonymous
  30. math

    Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.

    asked by sarah
  31. Calculus

    Evaluate the integral. -2 at the bottom of the integral sign and 7 at the top. f(x)dx f(x)={x if x or equal to 1 I'm not sure how you would apply these two concepts together?

    asked by Z32
  32. literary

    I am writing my father's obituary - he passed away unexpectedly on Monday. He was from a very small town and always quoted verse that ended with "And when I go (return) home, I am a boy again" Walt Whitman. Dylan Thomas. Please. Please. I have a deadline

    asked by Ellen
  33. geography

    to which will i refer to know the kind of climate in Korea?

    asked by maynard
  34. geography

    to which will i refer if i want to know Japan has snow?

    asked by maynard
  35. Math

    How do I formulate this question to be solved in the POM-QM software? Deborah inherited a large sum of money; she wants to use a portion of this money to set up a trust fund for her two children. The trust fund has two investment options: 1) a bond fund

    asked by Nukdog
  36. Math

    Which of the following is TRUE about the line through the points (–1, 4) and (–1, 2)? Please EXPLAIN/SHOW WORK. A. The slope is undefined B. The slope is negative C. The slope is 0 D. The slope is positive

    asked by Carmin
  37. com130

    . In what situations might an individual writing process be preferable?

    asked by Joel
  38. chemistry

    Here is the question: A sample of ethanol, C2H5OH, weighing 2.84g was burned in an excess of oxygen in a bomb calorimeter. THe temperature of the calorimeter rose from 24C to 33.73C. If the heat capacity of the calorimeter and contents was 9.63 kj/C. What

    asked by Capacino
  39. Maths

    How do i simplify (3a-1^2)?

    asked by Francois
  40. Math

    How do i factorise 25p^2-q^2?

    asked by Marcelle
  41. Chemistry

    What are vinyllic organohalides? How would you be able to identify them? Thanks

    asked by Sam
  42. Math

    How do I calculate price relatives?

    asked by Loyce
  43. calculus

    Differentitate y = e^x^2 -^5^x +^4 so far i have dy/dx = 2x e^(x^2) - 5^(x)* ln 5 + can you help with the rest?

    asked by lana
  44. Math

    I need some help with this problem. When finding the factors of 841, what is the largest factor you would have to test? What theorem supports this? Can someone please help me with this? Thanks.

    asked by Anonymous
  45. Algebra

    Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function c. f is neither odd nor even Cf is both odd and even

    asked by Tammie
  46. AED

    How does language development affect instruction and assessment for ELL students? In what ways are our tests geared equally toward all students, ELL or otherwise or are they?

    asked by CHAYO
  47. calculus

    differentiate y = ln(e^x + e^-x)

    asked by lana
  48. art

    How do you add and subtract fractions? Provide an example and demonstrate the steps you would take to arrive at the answer. What strategies would you use to help a student struggling with the concepts of adding and subtracting fractions?

    asked by CHAYO
  49. MATH 156

    How do you add and subtract fractions? Provide an example and demonstrate the steps you would take to arrive at the answer. What strategies would you use to help a student struggling with the concepts of adding and subtracting fractions?

    asked by NENAS
  50. Accounts

    GT Ltd provides you with the following information at 30.06.Y1 Amounts in MUR. 1. Property, Plant and Equipment 505,000. Other Financial Assets 120,000. Inventories 200,000. Trade and other Receivables 202,000. Prepayments 10,000. Cash and Cash Equivalents

    asked by Taykto
  51. us history

    In what ways does the Magna Carta still impact law?

    asked by greg
  52. accounting

    Malissa is an accountant. Sometimes printouts of financial statements have errors and are not usable. Malissa doesn't like to waste anything, so she takes the unusable financial statements to her son's day care center to use for drawing paper. Explain why

    asked by shay
  53. math

    How do you do this: (4 -5 + (-3 2 0 7) 5 -6)

    asked by Isabella
  54. Algebra

    Help please! I got so far with this and stopped because of confusion. Here is what I have so far. Let f(x) = 6/x-1 and g(x) = 1 + 3/x find the composite function of (fog)(x) (fog)(x) = f (g(x)) =f (1+3/x) =6/x-1 ????

    asked by Rachale
  55. Math

    Using the TI-89 Titanium calculator: Find the largest and smallest values of each of the following functions on their given intervals. (I'll show you one) f(x) = 2^x + x^2 [-4, 1] I put in the function on the Y= screen as shown, then -4 < x < 1 (it's

    asked by Monique
  56. math

    Simplify: (-1-2i)+(4-6i) I get 3-8i and 5-8i... confused, which one is it?

    asked by Sophie
  57. physics

    Which of the following processes leads to a change in entropy of zero for the system undergoing the process? Non-cyclic isobaric (constant pressure) Non-cyclic isochoric (constant volume) Any closed cycle

    asked by sam
  58. 11th grade

    The equation of a circle with center (0, 3) and radius 3 is

    asked by ra
  59. math

    The equation of a circle with center (-1, 2) and radius 4 is

    asked by ra
  60. math

    Every circle is a function

    asked by ra
  61. Statistics

    Two problems: 1. Find D sub 3 of the following data set: 60, 40, 26, 33, 23, 53, 36, 23, 28, 12, 30, 47 2. Find P sub 26 of the following 25 scores: 38.5, 41.5, 52, 52.5, 61, 63, 63.5, 68, 69, 69, 78.5, 79, 80, 83, 87, 88.5, 88.5, 91, 91.5, 92, 92.5, 94,

    asked by Amy
  62. words and reference

    what do these 2 words mean please.? can you please help with the 2 following questions 1) can you tell me what - embodiment - means and please give an example. 2) Also can you please tell me what - intersubjectivity - means as before please give an

    asked by amy-s
  63. writing

    In society today, some families don't have essential needs of financial stability, attention of their parents, and a comfortable household to grow up in a stable environment which lead to a dangerous future ahead. Comparing to that and our own vision of a

    asked by Justin
  64. Physiology

    Of what physiological advantage would increased stroke volume (and its related effect on cardiac output) be to an animal that just ate a meal?

    asked by brad
  65. Physiology

    The amount of DNA (measured in ng per mg ventricle) decreased. One nucleus is present in each vertebrate myocardial cell (each cell is mononucleated). Explain how it is possible that a decrease in mass-specific DNA concentration indicates growth of

    asked by brad
  66. Physiology

    the mechanisms responsible for triggering cardiac hypertrophy are still a mystery. Hypothesize about possible signals and the steps that might be involved to cause postprandial cardiac hypertrophy in pythons.

    asked by brad