Questions Asked on
December 14, 2006

  1. Chemistry

    Compounds like CCL2F2 are known as chloroflourocarbons, or CFCs. These compounds were once widely used as refrigerants but are now being replaced by compounds that are believed to be less harmful to the environment. The heat of vaporization of CCl2F2 is

    asked by Jenn
  2. Math

    8 runners are entered in the 1000-meter run. How many different first, second, and third place finishes could possibly occur? Is the answer 24? No. 8x7x6 = 336 The first place can be any of eight. For each first place possibility, there are seven possible

    asked by Tony
  3. physics

    A father racing his son has half the kinetic energy of the son, who has half the mass of the father. The father speeds up by 1 m/s and then has the same kinetic energy as the son. What are the original speeds a) of the father? b) of the son? I know that

    asked by Chris
  4. Brain freezer a.k.a. MATH

    Please Help! Are all squares similar? I think that they aren't but i'm not sure. I think this because rectangles can be squares and rectangles can take different forms and shapes. Please help What do you mean by square? A square will always have a 4 sides

    asked by Crystal
  5. physics

    A child slides down a slide with a 28° incline, and at the bottom her speed is precisely three-fifths what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child Height=

    asked by Anonymous
  6. Math

    An advertisement for a pineapple drink claims that the drink contains 15%pineapple juice. How much pure pineapple juice would have to be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice? Let's look at how much pineapple is

    asked by Regina
  7. Managerial Accounting

    17.Pid has invested in a machine that cost $70,000, that has a useful life of seven years, and that has no salvage value at the end of its useful life. The machine is being depreciated by the straight-line method, based on its useful life. It will have a

    asked by Dovey
  8. Math

    8 runners are entered in the 1000 meter run. How many different first, second, and third place finishes could possibly occur? Is the answer 24? I think that would be a reasonable answer. Way low. I think 8*7*6=336 permutations

    asked by Tony
  9. CHEM

    in addition to previous Q: for eg: why is the oxidation state (#) of Ca in CaH2 "+2"? According to a p.table I have here +2 is the only oxidation # for Ca...but how is that figured? One other eg: the oxidation state (#) of the maganese atom in KMnO4.6H2O

    asked by K
  10. Managerial Economics- URGENT

    The Blue Dragon Restaurant is a new Chinese Restaurant in town. As the only Chinese restaurant in the area, it faces the following daily demand curve: Q = 500 – 25 P Where Q is the number of meals it serves per day and P is the average price of its

    asked by Bob
  11. Algebra

    Solve the system 9x-5y=119 18x-10y=238 Double both sides of the first equation and you have 18x-10y =238 which is the same as the second equation. Since the two equations are not independent, there are no unique solutions. Thee are an infinite number of

    asked by Tabby
  12. us history

    which of the following best describes an example of how Progressives worked? a) they worked to free businesses from unnecessary government restraint. b) they worked to make government more responsive to people. c) they allowed govenment leaders more

    asked by tabby
  13. French

    I have to write an essay on this prompt: Decrivez un conflict que vous avez vecu ou que vous avez observe. Donnez les circonstances du conflict et expliquez ce qu'on a fait pour le resoudre. Indiquez vos sentiments sur les resultats. Form what I understood

    asked by cbarnett
  14. Math

    Does -3/4 belong in the group, integers and rational numbers. in order it goes:Natural #s-1,2,3,4... Whole #s-0,1,2,3,4... Integers-whole #s & opposites(negatives) Rational #s-numbers written in fractions or decimals Please read: (Broken Link Removed) -3/4

    asked by Katie
  15. Business Law

    true or false a tenancy at sufferance usually involves a holdover tenant. i think it is true. I agree. http://legal-dictionary.thefreedictionary.com/tenancy+at+sufferance what are the features of business law If Atricles of Incorporation were never filed

    asked by Rose
  16. algebra

    Find the zeroes of each function. State the multiplicity of multiple zeroes. y=(x+3)^3 y=x(x-1)^3 I know you're supposed to factor them out, but I'm really not sure how to. Thanks. The equations are already factored out. For the first one, y is zero at x=3

    asked by Toni
  17. algebra

    factor the expression 4xsquared+35x+24 my answer: (4x+3)(x-8) 4x2 +35x+24= 24 = 2x12 24 = 4x6 24 = 8x3***** (4x+3)(X+8) 4X2 + 3X + 32X +24 + 4XSQ. + 35X + 24

    asked by Tabby
  18. Algebra (need help ASAP!!!!)

    I didn't get how to do the problem. In my book it says to choose a variable and write an absolute value inequality that represents each set of numbers. Here are the problems I had-- all real numbers less than 2 units from 0 all real numbers less than 1

    asked by Emily
  19. Electric currents and magnetic fields

    Within a material, what results in the conversion of an electron's energy to thermal energy and electromagnetical energy? The electron moving makes an magnetic field, if it changes, there will be an electric field with the magnetic field. Thermal energy is

    asked by Kalee
  20. PHYSICS

    1. Vecor A is 3 units in length and points along the positive x-axis. Vector B is 4 units in length and points along a direction 150 degrees from the positive x-axis. What is the direction of the resultant relative to the positive x-axis? a. 80 degrees b.

    asked by anonymous
  21. Social Science

    Consider racial imbalances in education, the economy, family life, housing and crimical justice system, and the health care and politics, of these societal challenges facing modern African American, which do you think are most difficult to overocme and

    asked by Sharon
  22. math

    y= 2sin^2 x y=1- sinx find values of x inthe interval 0

    asked by Candy
  23. TO ALL STUDENTS

    Please remember these things: 1. This is a homework help website; please put your subject (math, science, English, or ??) in the subject line to make it faster for each teacher to find those questions in his/her areas. An even better subject heading would

    asked by Writeacher
  24. Finance

    im trying to calculate cost of debt. where did they get the 50 value from? P0 = $1,080 = $50(PVIFA,R%,46) + $1,000(PVIF,R%,46) 30 year bond, 10% semi annual. 7 years ago it was issued. current selling is 108% face value.

    asked by James
  25. History

    Which of the following best explains why the "recall" provision was an important election reform? a) it allows voters to remember what measures are on the ballot. b) it allows for removal of an elected offical from office. c) it allows a vote on a measure

    asked by tabby
  26. chemistry

    Does this equation need to be balanced? AlCO3 => AlO+CO2 Also, how would this equation be balanced? NiCl+O2 => Ni2O3+Cl2O5 Neither equation you have is an equation so they can't be balanced. Do you mean aluminum carbonate. That would have the formula

    asked by Carter
  27. math

    Find the zeroes of the function y=3x^3-3x So I factored that to y=3x(x^2-1) but am not sure about the zeroes. I know that 0 and 1 are zeroes, but am not sure how to get a zeroe from x^2. Thanks. Factor it again to get 3x (x+1)(x-1) The zeroes are where any

    asked by Tanya
  28. English

    "bacteria or germs" is a compound direct object after the gerund "controlling" which is the object of the preposition "of" Make sense? I hope you'll point out to your teacher that non-word that is serving as a direct object after the main verb "showed." =)

    asked by Writeacher
  29. algebra

    y varies directly with x If x=52 when y=130, find x when y=140 i got 61 x/52 = 140/130 x= 52(140/130) Put 52(140/130) in the google search window.

    asked by tabby
  30. science

    what is the difference between mass and volume? Mass is how much an object weighs. Volume is the amount of space the object takes up.

    asked by tiffany
  31. Math

    An advertisement for a pineapple drink claims that the drink contains 15%pineapple juice. How much pure pineapple juice would have to be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice? This is a mixture problem. Pineapple

    asked by Regina
  32. Algebra

    - 20> 8 +7a Solve inequalities like you would an equation, EXCEPT if you multiply or divide by a negative number, reverse the inequality sign. Let's look at your problem: - 20 > 8 + 7a First subtract 8 from both sides (whatever operation you do to one side

    asked by steph
  33. business law

    rule-based ethics is most often reflected in our legal system through a) our elected representatives b) legislatures c) court decisions d) majority rule i think the answer is c Right! Courts are responsible for making sure that our laws follow the rules

    asked by Rose
  34. Philosophy

    Why aren't all causal studies done as experimental studies, rather than non-experimental studies? Sometimes the effect is not desired. What causes murders? What causes Rape? what causes child molestation? Does one want to do causal experimentation?

    asked by Anne
  35. Philosophy

    Provide a premise that would permit the value-expressing conclusion "Sarah ought to tell the truth" from the descriptive premise "Sarah's son is asking if he's adopted." Sarah's son is asking if he's adopted. Sarah's son has access to his birth

    asked by Anne
  36. PLEASE HELP- managerial economics

    I just need an answer check on these true/ false questions, PLEASE: 1. A principal-agent problem occurs when managerial decisions are inconsistent with the firm’s revenue maximizing objective. False 2. A firm making less than a normal profit would have

    asked by Dylan
  37. math,algebra

    can someone explain to me how to solve for the following: Directions:Find the GCF of 6,18, and 30 well to get the answer you need to find the biggest comon factor that all of the numbers can evenly go into. like with 3, 6, 9 you would take 9 and write/type

    asked by Jasmine20
  38. math,algebra

    can someone explain to me how to find the gcf of 6,18,and 30 does 6 divide evenly into them all? What does GCF mean?

    asked by Jasmine20
  39. Need help on my report on a famous Chemist

    http://www.liv.ac.uk/Chemistry/Links/refbiog.html Would you please help me with my report on a famous chemist, i need ideas on who i should do it on, and i need to identify his/her contributions to my life, and the report has to be one and a half to two

    asked by bobpursley
  40. need help on conversions

    Use the density of water: 1gram/ml= 1g/cm^2 looks like the volume of 1 cm^3 has a mass of one gram. 1 cm3 of water weighs 1 gm. would you help with converting 1cm3 of water to grams

    asked by bobpursley
  41. algebra

    identify the equation of the line through (-1,-4) and parallel to y=-6x+4 i got y=6x+10 Isn't the slope of the original line from y=-6x+4 equal to -6. Your solution has a slope of +6. Are those two lines parallel? i have to identify the equation of a line

    asked by eddie
  42. algebra

    solve the compound inequality 3x-5>-17 and 4x+3

    asked by Rose
  43. Managerial Accounting

    John has invested in a machine that cost $70,000, that has a useful life of seven years, and that has no salvage value at the end of its useful life. The machine is being depreciated by the straight-line method, based on its useful life. It will have a

    asked by Really Need Acc. Help
  44. algebra

    solve the compound inequality 3x-5>-17 and 4x+3

    asked by Rose
  45. Rate of Change

    There is a question on my homework that asks use d=1032-200t to the approximate the distance in miles and time in hours of a pilot from her destination. find the distances for the time values given in 2a and 2b 2a:t=1.5 hours 2b:t=4.8 hours how do i solve

    asked by Ashley
  46. Physics

    I have an exam tomorrow and I need to know these questions: 1. Velocity measures all of the following EXCEPT: a. the speed of an object b. the total displacement of an object c. the direction of an object's motion d. the displacement for each time interval

    asked by jenna
  47. Philosophy

    Is not telling the truth morally wrong from a divine command perspective? IT depends on the divinity involved. Think about that. What about telling a half-truth? Again, it depends on the divinity invoked. I know religious teachers who lie, cheat, and

    asked by Anne
  48. HISTORY

    By the end of the 1800's jobs employed ____________ between the ages of 10 and 16? Who owned much of the Western land near prime transportation routes? What fraction of the soldier's out West deserted? Child Labor was the scourge and economic engine of the

    asked by ANONYMOUS
  49. math

    how do you add and subtract and multiply and divide fractions? I searched Google under the key words "fractions add subtract multiply divide" to get these possible sources:

    asked by josh
  50. Philosophy

    a) Using long or short truth tables (symbolize as necessary and show tables) determine and state whether the following argument is valid, briefly explaining your table; and b) if valid, demonstrate validity by deductions using Group I rules. Arg If Peter

    asked by Anne
  51. Physics (E&M)

    A uniformly charged straight wire (radius a) has linear charge density lambda. The wire is coated with a dielectric material chi with external radius b. I need to find the electric field everywhere and the volume and surface bound charge distrobutions but

    asked by Anonymous
  52. Chemistry Test Tomorrow

    I don't actually have problems, but I have a test over stoichiometry tomorrow, which is pretty much going to determine my semester grade. I was just wondering if anyone knew any helpful tips, hints, or just an easier way to explain the basics of

    asked by Trish
  53. Algebra

    Solve the equation using the Quadratic Formula 5xsquared+13x-6=0 i think it is -2/5,3 5x^2 + 13x -6 (5x -2)(x +3)=0 You are correct. From Bob Pursley's work you can see that his solution gives +2/5 and not -2/5. The +2/5 is correct. drbob is right on that.

    asked by Libby
  54. biology

    the name given to the idea that life could rise from nonliving matter is called? (Broken Link Removed)

    asked by danny
  55. algebra

    evaluate the expression for the given value of the variable. 4(3h-6)-3(4h+5)/6+h ; h=-3 i think it's -37 I believe you made a mistake somewhere. Check your steps. 4[3(-3)-6]-3[4(-3)+5] --------------------- 6-3 Let's do the top, first. 4[-9-6]-3[-12+5]

    asked by tabby
  56. Common Knowledge

    Does any one know any very good science fair project website. The ones that a very extravegent. Please don't tell me to google it becuase I have tried and I am looking for recommendations. Here are some sites you might want to look at.

    asked by Gina
  57. Math

    I just wanted to check my answers with anyone willing to take the time. Identify all sets that -3/4 belongs to: a.whole #s, integers, rational #s b.rational #s c.integers, rational #s d.odd #s, whole #s, integers, rational #s Ithought it was C How many

    asked by Katie
  58. science

    Describe the identifiable physical properties of substances and explain how changes in these properties can occur without changing the chemical nature of the substance. Mass & density are 2 properties of matter. When water freezes it expands making it less

    asked by stan
  59. Algebra

    12 - 5z/4 < 37 12-5z/4 < 37 Subtract 12 from each side. -5z/4 < 25 Mulitply each side by -4 to cancel out the negative and 4 in the denominator. Switch the inequality symbol because you are multiplying/dividing by a negative number. 5z > -100 Divide each

    asked by steph
  60. islamic studyes

    is it bad to fight? why? Most religions believe it is bad to fight -- except when you're defending yourself -- or fighting bad impulses within yourself.

    asked by zabir
  61. Algebra (need help ASAP!!!!)

    I didn't get how to do the problem. In my book it says to choose a variable and write an absolute value inequality that represents each set of numbers. Here are the problems I had-- all real numbers less than 2 units from 0 all real numbers less than 1

    asked by Emily
  62. Inclusive Language

    Each advisor was contacted by his students. Exactly what do you need to do with this sentence? ?? Need to have sentence to be correct in a nonsexist form. The sexist word there is "his" -- how can you rephrase that sentence and not have that pronoun

    asked by Carla
  63. Philosophy

    For the following argument, a) Translate into standard form (if not already in standard form), b) symbolize to simplify, and then c) determine whether the syllogism is valid or invalid, explaining why by reference to rules, AND by showing the appropriate

    asked by Anne
  64. Writing

    I have to write a business letter persuading the manager to return my money for damaged merchandise. Any ideas or suggestions? He should because: 1.It's the store policy 2. Wal-Mart does 3. You are a loyal customer 4. You'll never shop there again if he

    asked by Yolanda
  65. Math

    what iz 4,000x500? put 4000*500 in your google search window 12h = sec

    asked by EmilyRulz555
  66. algebra

    solve the system by the method of substitution x-4y=-21 3x+y=2 I got (0,2) Try plugging in x=0 and y=2 into your first equiation and uopu will that your answer must be wrong. Do it this way: x - 4y =-21 12x+ 4y =8 13 x = -13 x = -1 y = 2 - 3x = ? x=0 and

    asked by Rose
  67. Dr bob222,math

    How is 6p^5q^3 x 9p^5q^3 / 5p^5q^5= 30p^5q because isn't it both have the same exponents and letters therefore they should cancel and be left with 30q^2 The equation started at as 25 for the second part of the numerator and not 9. 6p^5q^3 x

    asked by Jasmine20
  68. US History

    Unlike a small business, a corporation... a) is owned by stockholders b) passes liability for its debts to its stockholders c) depends upon an owner or owners for its existence d) is not publicly owned or traded on the stock market i think it is a. I

    asked by Libby
  69. biology

    the information you gather during an experiment is called your? http://www.c4md.org/research/method.html Look at #4 carefully when there

    asked by Anonymous
  70. business law

    If a person is injured as a result of an unreasonably dangerous or defective product, how will he or she most likely recover damages for the injury? a) hold the retailer of the product strictly liable. b) hold the wholesaler strictly liable c) hold the

    asked by Rose
  71. Science - Oceanography

    Primary food source for abyssal organisms? Phytodetritus? Just a guess.... :) Phytodetritus is the major food source for abyssal benthic communities. choice of dead whales and other larger orgainsms which fall to the bottome or the rain of detritus and

    asked by Marsha
  72. Science-Oceanography

    Bioluminescence in the marine environment is: a. Widespread amonth both invertebreates and the fishes? b. limited to plankton and survace dwelling organisms? It is widespread. Scroll down to Organisms that bioluminesce here:

    asked by Marsha
  73. algebra

    Write a polynomial function in standard form with the given zeroes: x=-1/2, 0, 4 My equation is p(x)=x(2x+1)(x+0)(x-4) Is that right? If so, can you explain how to multipy this out correctly. Thanks in advance.

    asked by Mary
  74. Science

    What does a source of electrical energy do in an electrical circuit?

    asked by Icy Rose
  75. Algebra

    3x - 1 > 14 3x-1>14 3x>14+1 3x>15 x>5

    asked by steph
  76. business law

    In most states a person under age 18 does not have a) testamentary capacity b) testamentary consent c) testamentary formality d) all of these i think it's d.

    asked by Rose
  77. Marketing Mgtn

    Based upon your current perception of marketing, how would you define the function of marketing within your organization?

    asked by Zeta
  78. Math

    I have 16 numbers: 3,5,10,11,15,20,8,11,9,10,10,12,13,14, 15,10. These numbers have to be arranged in a 4 by 4 (horizontally and vertically) where each row equals 44. Please Help! Jumping rope can burn 600 calories per hour. write and solve an inequality

    asked by Dianne
  79. challenging math problems! :]

    1. a total of 120 numbers can be formed using all 5 digits 1, 2, 3, 4, and 5. If these numbers are arranged in increasing order 12 345, 12 453, up to 54, 321, which one is the 75th number in this order? *can someone tell me how to do this problem???^) 2.

    asked by gary
  80. MATH!!!!ASAP!!!

    How can i graph this equation by plug in numbers???? x^2-y^2=9 HELP PLZ!!!!!!THX ALOT!!!! Assign numbers to x and solve for y then put them in a graph: let's say x is -3 Then 9=y^2+9 y^2=0 y=0 Ok now x= -4 16=y^2+9 y^2=5 y=2.236 Also you can assign y a

    asked by Katrina
  81. English

    help me pls.. How the puritans were different from the people of the Revolutionary period? WHo coined the phrase "There are many times that try men's souls"? Who felt God was on the colonists' side and would help them win the war? the choices fo WHO

    asked by ethan
  82. CHEM

    What is the exact method/formula used to calculate oxidation state #'s? & how does one know when to use the correct oxidation state #? For example: Carbon carries 4,2,-4; Cl= 1,5,7,-1; and, Mn=2,3,4,7. Thanx. You use the seven rules in your text. Assigning

    asked by K
  83. Algebra,mATH

    Can someone help me correct this Directions:Divide 6p^5q^3 times 25 p^5q^3 / 5p^5q^5 My answer is : 30q^2 6pppppqqq*25pppppqqq/5pppppqqqqq= 30pppppq = 30p5q huh? Answered above.

    asked by Jasmine20
  84. algebra, math

    Can someone help me correct this. (2)Directions:express 0.047 as apercent My answer: 4.7% correct

    asked by Jasmine20
  85. Science

    What is the main substance made during? Photosynthesis (Broken Link Removed)

    asked by Marissa
  86. World History

    What are five influences from ancient Greece that can be found in todays society???? i need help i wnet to all these different web sites but they all gave me different answers.. Thanks Please be sure to let us know what you already have. Then we'll know

    asked by Teri
  87. algebra

    write the number in the form a+bi 6 - the square root of -9 i got -3i 6 - 3i

    asked by eddie
  88. english

    "Injustice anywhere is a threat to justice everywhere" what does this mean? Someone explain it plz. I think it means that if there is no justice or no fairness in a certain place, makes others think that doing the same thing is okay. thanx.

    asked by Emma
  89. science -Oceanography

    Behavior in fishes and other marine organisms, such as vertical migration, countershading, and breeding cycles are in responce to? Sunlight. choices of responses to: a. Penetration of light in the sea b. Temp changes with depth c. seasonal changes of

    asked by Marsha
  90. business law

    In most states a person under age 18 does not have a) testamentary capacity b) testamentary consent c) testamentary formality d) all of these i think it's d.

    asked by Rose