Most popular questions and responses by colleen
  1. Chemistry

    At 298 K, the Henry\'s law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen.At 298 K, what is the solubility of oxygen in water exposed to air at 1.00 atm? At 298 K, what is the solubility of oxygen in water exposed to air at 0.896 atm? If

    asked on February 7, 2013
  2. physics

    A coin is placed on a vinyl stereo record that is making 33 1/3 revolutions per minute on a turntable. In what direction is the acceleration of the coin? Find the magnitude of the acceleration when the coin is placed 18 cm from the center of the record.

    asked on January 31, 2012
  3. physics

    A crate with mass 32.5 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 140 . How far does the crate travel in 10.0s? What is its speed at the end of 10.0s?

    asked on August 22, 2009
  4. physics

    A circular steel wire 2.00 m is to stretch no more than 0.25 cm when a tensile force of 400 N is applied to each end of wire. What minimum diameter is required for the wire?

    asked on August 22, 2009

    What is the potential energy for an 800 kg elevator at the top of Chicago's Sears tower , 440 m above street level? Let the energy be zero at street level.

    asked on August 22, 2009
  6. physics

    The upward normal force exerted by the floor is 620 N on an elevator passenger who weighs 650N. What are the reaction forces to these two forces? Is the passenger accelerating? If so, what are the magnitude and direction of acceleration?

    asked on August 22, 2009

    One of the results of the Industrial Revolution was Which of these was not a feature of working class life in early industrial societies The advantages that led Britain to the Industrial Revolution included

    asked on May 10, 2013
  8. physics

    Two uniform spheres , each of mass M and radius R, touch one another. What is the magnitude of their gravitational force of attraction?

    asked on August 22, 2009
  9. physics

    An earth satellite moves in a circular orbit with an orbital speed of 6200m/s. a) find the time of one revolution. b) find the radial acceleration of the satellite in its orbit.

    asked on August 22, 2009
  10. Gen Chem II

    A gas-forming reaction produces 1.60 m3 of gas against a constant pressure of 127.0 kPa. Calculate the work done by the gas in joules. Please explain. Thanks!

    asked on January 20, 2013
  11. Math

    A 36 inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece find the length s of all three pieces

    asked on September 24, 2016
  12. Life orientation

    What roles and responsibilities do the media have in reporting human rights violations in a responsible manner

    asked on April 26, 2019
  13. physics

    the hammer of a pile driver weighs 3800N and must be lifted vertically 2.80 m at constant speed in 4.00 s . What horsepower must the engine provide to the hammer?

    asked on August 22, 2009
  14. Math

    Cantaloupe is priced at $0.69 per pound. If a cantaloupe weighs 3.241 pounds, how much will it cost? Round to the nearest cent.

    asked on May 8, 2013
  15. Business Math

    Using the simplex method, solve the following linear programming problem: Maximize: P= 5x+2y Subject to: 4x+3y < or equal to 30 2x-3y < or equal to 6 x > or equal to 0, y > or equal to 0.

    asked on December 9, 2012
  16. science

    Rebecca is studying the range of growth of tomato plants. She measured the following data in the fourth week of growing her plants. tomato plant measured growth 1 1.5 cm 2 6.5 cm 3 7 cm 4 6.5 cm 5 3.25 cm 6 7.75 cm 7 5.5 cm 8 6 cm Given this data, what

    asked on October 14, 2011
  17. physics

    A loaded elevator with very worn cables has a total mass of 2200kg, and the cables can withstand a maximum tension 28 000N a) what would be the maximum upward acceleration for the elevator if the cables are not to break? b) what would be the answer to part

    asked on August 22, 2009
  18. statistics

    Suppose a large shipment of microwave ovens contained 18% defectives. If a sample of size 228 is selected, what isthe probability that the sample proportion will be greater than 14%? (Round your answer to 4 decimal places)

    asked on January 23, 2015
  19. Science

    Assume the speed of a nerve impulse is 100 m/s. How does this compare to the speed of electricity in a copper wire (approximately 3.00*10^8 m/s)? What does this tell you about the flow of electrons in a wire compared to the movement of ions in a membrane?

    asked on October 8, 2013
  20. social studies

    Have you learned something new about your own racial, ethnic, or cultural history?

    asked on August 16, 2012
  21. Pre Algebra

    What is the function rule when the input is 0,1.2.3 and the output is 5,4,3,2?

    asked on April 5, 2011
  22. Physics

    Essay Question: discuss whether or not it is possible for an object to be increasing in speed as its acceleration is decreasing. For either position you take, use examples as part of your explanation. CAN SOMEONE HELP SUGGEST AN EXAMPLE THAT WOULD HELP

    asked on January 6, 2016
  23. physics

    What average force is required to stop an 1900 car in 6.0 if the car is traveling at 80 ?

    asked on April 18, 2011
  24. Science

    Adam suffers from severe emphysema. Gas exchange in his lungs is not adequate, and he requires supplemental oxygen. But even though his blood carbon dioxide levels are elevated, his blood pH is close to normal. Considering the urinary system, explain how

    asked on July 30, 2014
  25. statistics

    If a spinner labeled 1-7 was spun 150 times, what is the probability of getting a prime number?

    asked on April 1, 2012
  26. accounting

    Wilson Reed, the bookkeeper for Home Interior Improvements and Designs Company, has just finished posting the closing entries for the year to the ledger. He is concerned about the following balances: Capital account balance in the general ledger: $ 48,550

    asked on February 23, 2012
  27. Chemistry

    I need to be able to tie in acetic acid and boric acid. To decipher properties of acid-base chemistry and how they adhere to Le Chatelier’s principle. I appreciate any input....

    asked on November 30, 2010
  28. History

    The article by Tom Watson and deals with the Negro Question in the New South. What was Watson answer to that question.

    asked on September 25, 2010
  29. 6th grade math

    the base of the great pyramid is a square with an area of 571536 ft squared. If one of the sides of a similar figure is 5 cm what is the area of the figure? How can I solve this?

    asked on February 15, 2011
  30. english

    what is a immigrant women and what is a refugee women?

    asked on January 12, 2010
  31. economics

    Which combination of fiscal policy actions would be most stimulative for an exonomy in a deep recession? a) increase taxes and government spending b) decrease taxes and government spending c) increase taxes and decrease government spending d)decrease taxes

    asked on December 4, 2006
  32. geometry

    In right triangle ABC, measure of angle ACB= 90 and segment CD is the altitude to the hypotneuse AB. Ad= 6 cm and BD= 4 cm. Find the length of segment CD to the nearest hundredth.

    asked on May 23, 2012
  33. MATH

    I know a polygon has many sides am I correct to say that a concave polygon has two sides.

    asked on June 22, 2011
  34. Chemistry

    I wanted to find out what the difference is between acetic acid and boric acid and how they relate to the LaChatelier's principle.

    asked on November 30, 2010


    asked on July 7, 2010
  36. accounting

    What entry in account journalizing this would be: Mr. W made a additional payment of 2k by issuing a 60 day note. Thank you!

    asked on July 29, 2015

    Find warranty period (in days) for a washing machine whos average (mean) life is 6 years and standard deviation of 2.5 years. Assume 365 days in a year.

    asked on January 22, 2015
  38. Chemistry

    How many grams of H2SO4 will be needed to react with 69.3gof NaOH? Can you list steps so I can understand this? Thanks

    asked on October 24, 2012
  39. English

    A Thirteen Letter Word That Means "A Whole Bunch". The Thirteen Letters Are As Follows: NOSOREGGTIACN

    asked on September 1, 2011
  40. math

    What is an equivalent expression of 8 • n - 18 + 6 - 5 • n

    asked on April 11, 2011
  41. child care exam number 00390500

    proximal development

    asked on July 7, 2010
  42. Anatomy

    Explain why a surgeon would use subq sutures duing abdominal surgery, but not during an open reduction and internal fixation of a fractured radius

    asked on February 23, 2010
  43. physics

    a) compute the kinetic energy in Joules of a 1600kg automibile traveling at 50.0 km/h. By what factor does the kinetic change if the speed is doubled?

    asked on August 22, 2009
  44. Geometry

    The vertices of ∆ABC are A (-2,5), B(-2,4), and C(-5, 3). If ∆ABC is reflected across the line y=-2 to produce the image ∆A’B’C, find the coordinates of the vertex A’ if ∆ABC is reflected across the line x= -2.

    asked on October 7, 2016
  45. Math

    On Monday at noon, the temperature was 23oF. By 9 pm it was -4oF. On Tuesday at noon, it was 18oF. By 9 pm it was -11oF. On which day did the greater temp. change occur?

    asked on March 19, 2015
  46. His 104 civilization 11

    the Indian ocean was largely spared large-scale warfare because

    asked on September 15, 2013
  47. 104 cilivi history

    the Indian ocean was largely spared large-scale warfare because

    asked on September 15, 2013
  48. math

    how to draw a right triangle with one acute angle measuring 75 degrees and a leg of 5cm on a side of the 75 degree angle

    asked on June 16, 2013
  49. HIS 104 civilizations 11 quiz

    THE Monroe Doctrine emphasized

    asked on May 10, 2013
  50. 104 world civilizations 11

    The economic exploitation of colonies included

    asked on May 10, 2013
  51. health

    What is the eleven letter word that describes the process by which the alcohol leaves the body.

    asked on March 1, 2013
  52. history

    Which of the following was a problem faced by the average Chinese citizen during the Song dynasty? the shrinking use of the civil service exam and thus the lack of opportunity to obtain a government position the control of the Chinese treasury by northern

    asked on October 11, 2012
  53. Geography

    From the perspective of a core country (e.g. France or Germany), explain the positive andnegative factors associated with being a member of the European Union.

    asked on September 10, 2012
  54. english 121

    I need help with my quiz in week 2

    asked on June 30, 2012
  55. accounting

    Your review of the general ledger of Home Interior Improvements and Designs Company reveals a beginning capital balance of $25,000. You also review the general journal for the accounting period and find the closing entries shown on the next page.Prepare a

    asked on February 23, 2012
  56. Math

    If there are 9 flavors of ice cream and each student orders 2 scoops with noone getting the same order - how many students are there?

    asked on October 10, 2011
  57. English

    Can Anyone Unscramble These 13 Letters (NOSOREGGTIACN. The correct word will mean "A Whole Bunch"

    asked on September 2, 2011
  58. child care

    the best strategy for encouraging social competence with a group of school-age children is to (a(reassure the student about positive behavior (b)punish students for antisocial behavior (c)use external rewards (d) model good social skills

    asked on July 7, 2010
  59. child care

    child care staff are most effective during science activities when they

    asked on July 7, 2010
  60. child care

    one of the most important function pf a child's peer group is

    asked on July 7, 2010
  61. Microeconomics

    How can I calculate for quantity when I know the price and MC? Price = 42.00 and MC = .006

    asked on May 31, 2010
  62. mental health

    i need to know 5 communication skills working with a person that has mental ilness

    asked on February 6, 2010
  63. mental health

    i need to know the explanation of the miracle and scaling question in mental health

    asked on February 5, 2010
  64. Algebra grade 6

    3 2/9 - 1/3 = p - 5 1/2 3 2/9 - 3/9 = p - 5 1/2 2 11/9 - 3/9 = p - 5 1/2 2 8/9 = p - 5 1/2 2 8/9 + 5 1/2 = p - 5 1/2 +5 1/2 2 16/18 + 5 9/18 = p 7 25/18 = p 8 7/18 = p is mom right?

    asked on January 13, 2010
  65. pre cal

    show that 6+6sin X is equivakent to --------- - 7 cos x 6cos x ------------ -7(1- sin x)

    asked on February 16, 2009
  66. algebra 1

    what is x^2_3x+2/x^2-16+3x+6/x^2-16

    asked on April 15, 2008
  67. chemistry

    how mant electron valences are in CCl4

    asked on March 2, 2008
  68. Chemistry

    How do I find the molarity of NaCl for different dilutions? You calculate the number of moles per liter of solution.

    asked on April 8, 2007
  69. Accounting Adjustment

    Use the straight line amortization method. Equipment amortizes 20 percent per year. Trial Balance for March 31, 2005 shows equipment worth $90,030.

    asked on February 22, 2007
  70. theology

    what is the ordained clergy? Scroll down and read about Priests/Vicars. =)

    asked on February 17, 2007
  1. Physics (check)

    Where did you get the 19.3 from?

    posted on February 21, 2019
  2. English

    It seems to be a mirror.

    posted on February 24, 2016
  3. Physics

    Ok THANKYOU so much for the clarification and the example. That sure did help A lot. Massive Thanks. Let's just hope this test goes well...

    posted on January 6, 2016
  4. math

    What is the quotient of 2,100 divided by 4?

    posted on December 2, 2015
  5. analogies

    skill: prowess consternation:fear

    posted on March 19, 2014
  6. medical billing and coding

    233.0 IS CORRECT

    posted on March 14, 2014
  7. 104 cilivi history

    the Indian ocean was largely spare large- scale warfare because

    posted on September 15, 2013
  8. world history

    the indian ocean was largely spared large-scale warfare because

    posted on September 15, 2013
  9. Com200 Interpersonal Communication

    i need help with these answer

    posted on March 23, 2013
  10. COM200: Interpersonal Communication


    posted on March 23, 2013
  11. Logic

    Julie and Kurt get married and had a body'' is best symbolized as

    posted on March 13, 2013
  12. psy

    director : cast thank you

    posted on March 9, 2013
  13. phi 301

    slippery slope fallacy

    posted on March 1, 2013
  14. history

    I am extremely confused

    posted on October 11, 2012
  15. history

    i thought the civil service was used wide spread

    posted on October 11, 2012
  16. history

    my guess is an influx of Christian missionaries countering Confucianism. what do you think ms sue

    posted on October 11, 2012
  17. Geography

    could you give me some web sites maybe? because i cannot find anyting on this

    posted on September 10, 2012
  18. english 121

    i need help with english 121 with week 2 discussion 1

    posted on June 30, 2012
  19. english 121

    can you help me with english 121 week3 discussion 1 and2

    posted on June 30, 2012
  20. Chemistry

    to decipher properties of acid-base chemistry and how they adhere to Le Chatelier’s principle. I appreciate any input on it.

    posted on November 30, 2010
  21. Child care

    the answer is (b)

    posted on October 24, 2010
  22. Child care

    answer 13 is not d

    posted on October 24, 2010
  23. child care

    my answer is a

    posted on July 7, 2010
  24. child care

    i see a and d

    posted on July 7, 2010
  25. child care


    posted on July 7, 2010
  26. child care

    b providing opportunties for compettion

    posted on July 7, 2010
  27. child care

    c asking divergent question

    posted on July 7, 2010
  28. childcare

    child care staff are most effective during science activities when they

    posted on July 7, 2010
  29. Algebra grade 6

    mom says thanks for confirming it since argued with her about it

    posted on January 13, 2010
  30. Geometry

    i have absolutely no idea how to do this!

    posted on April 15, 2009