Questions Asked on
August 19, 2007

  1. physics

    A 0.240 kg ball moves at a speed of 3.0m/s strikes a wall and bounces straight back at 2.40m/s. The collision lasts 0.0150s. How much kinetice energy in joules is lost during the collision? Wouln't you just subtract the final KE from the initial KE? That

    asked by manny
  2. physics

    meaning of graw I have never heard that term in physics.

    asked by jasreet
  3. History

    Could someone explain the concept of judicial review and its impact on the balance of power in the United States Government? Judical review means that the courts can review congressional and administrative actions to see if they are constitutional. The

    asked by Lillian
  4. chemistry

    Again, from my previous question about gravimetric analysis... Why can't NH4Cl be used as a substitute for NH3 in precipitating MgNH4PO4*6H2O? Please critique my thought: I found out that a precipitate is more soluble at lower pH and since NH4Cl acidic, it

    asked by Smiley
  5. chemistry

    Please help me with my formal report on "Potentiometric Determination of the Purity and Dissociation Constant of Potassium Hydrogen Phthalate" Please give me links to websites that could be used for my reference... In addition, please do suggest books that

    asked by Smiley
  6. Art.. Color Combinations

    Hello, With the following question I know that #3 can create a "cool" mood. Is #3 the correct answer Thank You Of the following color combinations which would best provide a solemn mood? #1 Shades and tints of yellow #2 Red, Yellow and blue #3 blue,

    asked by Mandi
  7. chemistry

    sulfur + oxygen -> sulfur dioxide Thanks. Do you have a question about this reaction?

    asked by inna
  8. sociology

    Describe how the role of the family in society has changed traditional has changed? (b)Explain the link between the nuclear family and industrial society? (c)In what ways does the treatment of elderly people differ between moder society and traditional

    asked by pallavi
  9. algebra

    write 9.03 x 10^-2 in standard notation. That is 9.02 hundreths, or 0.0902 Celsius temperatur readings can be converted to fahrenheit eadings using the formula F= 9/5 C + 32. What is the Fahrenheit temperature that corresponds to each of the following

    asked by lee
  10. History

    What factors motivated King Leopold of Belgium to seek ownership of the Congo region? http://en.wikipedia.org/wiki/L%C3%A9opold_II_of_Belgium Thank you for using the Jiskha Homework Help Forum. Hopefully you have a good history of the Congo. I'm sure we've

    asked by Lenny
  11. history

    What kind of leader was Joesph Mobutu? You can read about this dictator in these sites and decide for yourself the type of leader he was. http://en.wikipedia.org/wiki/Mobutu_Sese_Seko

    asked by Cassie
  12. science

    three statements that define all living things in term of cell Since this is not my area of expertise, I searched Google under the key words "living cell define" to get these possible sources: http://en.wikipedia.org/wiki/Life

    asked by jimmy
  13. science

    a community and all of the nonliving things that affect it Are you talking about an ecosystem? However, this also includes living things. I hope this helps. Thanks for asking.

    asked by jimmy
  14. science

    a group of the same kind of organisms that live in the same area at the same time Colony

    asked by james
  15. science

    All eukaryoyic cells have membrane compartments called ________ that form when part of the cell membrane an object and pinches off. That statement doesn't make sense.. All eukaryotic cells have membrane compartments called______that form when part of the

    asked by james
  16. science

    the cell herdiary material oraganelles at which amino acids are hooked together to make protiens. all of the popilations of different species that live and interact in an area I have to unscramble letters to make 3 words but I am having trouble figuring

    asked by shundra
  17. science

    ogranelle that modifies,packages and transport material out of the cell describes an organism that can exist onlly as a group of cells one of the structures a cell uses t o live ,grow and reproduce Ruth, Shondra, Jimmy -- We do not do your homework for

    asked by ruth
  18. science

    ogranelle that modifies,packages and transport material out of the cell describes an organism that can exist onlly as a group of cells one of the structures a cell uses t o live ,grow and reproduce Why have you posted all these questions under different

    asked by ruth
  19. Algebra

    How do you calculate the area of a rectangle. area of a rectangle is length x width.

    asked by Joshua
  20. History

    Why was the United States involved in Patrice Lumumba's assassination? Even in the late fifties, "the communists are coming..."paranoia had grips on the US, fanned by partisian politics of the far Right. It isn't clear to me that the CIA was involved

    asked by Cassie
  21. inb

    DESCRIBE OTHER CRITERIA THAT COULD BE USED TO MEASURE A MARKET'S POTENTIAL. What criteria have already been discussed? Your question doesn't make any sense without telling us what the "other criteria" are.

    asked by HELP
  22. math/algebra

    cab someone help me? solve by quadratic formula 3x^2 - 5x = -1 I cannot come up with the -5x and get the 1 for factoring. put it into standard form: 3x^2 -5x +1=0 a= 3 b= -5 c=1 x= (5 +- sqrt (25 -12)/6

    asked by dee
  23. history

    why did the United States support the reign of of Joseph Mobutu? i understand that the United States wanted to stop the spread of communism and Lumumba was a major impact on that subject and i know that Mobutu's men executed him and that's pretty much why

    asked by Cassie
  24. math/algebra

    can someone check my work? x^2 = 22 xãx-22 if x^2 is 22, then x is +- sqrt 22

    asked by dee
  25. math/algebra

    Is this correct -3a^2b/35a^5 * 14a^3b^2/-9b^4= -42ab/-315a^5b^4 you need to simplify and i belive your exponents on your variables are wrong _______________________________________ try again *** i got (2a^3)/(15b^2) sorry i forgot something, looking back

    asked by dee
  26. math/algebra

    Division: x^2 + 2x - 15over 4x^2 divided by x^2 -25 over 2x-10 Will someone show me the steps to work this problem, I have looked and looked at my book but it still makes no sense to me. Help. First, change the division to the reciprocal of muliplication.

    asked by dee
  27. advanced biology

    chemical properties describe how a _____ changes into a new substance. This site will give you a definition and examples. http://www.elmhurst.edu/~chm/vchembook/105Achemprop.html

    asked by emily
  28. science leaf collection

    Can someone give me a website with names and pictures of all kinds of leaves?If possible by today or tomorrow, I would really appreciate it. Thank you for helping me!!! Stacy =) This site has all kinds of leaf collection pictures.

    asked by Stacy
  29. mass media

    what is the controlled ownership and distribution of publications throughout history?

    asked by student
  30. mass media

    what are some groups and individuals who have had and not had access to information because of its control pre-book manuscripts?

    asked by student
  31. mass media

    what are pre-book manuscripts and what is the early publishing houses? Pre-book manuscripts are the hand-written or typed (word-processed) pages of an author's books before it's been edited by the publisher. Check these sites for early publishing history.

    asked by student
  32. mass media

    what is today's publishing conglomerates and the organization of todays'publishing industry? Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's

    asked by student
  33. mass media

    Thank you if anyone could help me with the previous posts. If you are taking a course in mass media, surely you have a textbook or have been referred to particular websites or reference databases via your school's library. If the above is not true, it

    asked by student
  34. math/algebra

    Divide: 2x-6/21 divided by 5x-15/12 I have worked to this point and now I'm stuck. 2(x-3)/7 * 4/5(x-5) and I don't know where to go from here. Can anyone point me in the right direction? No. the second term in th denominator factors to 5(x-3), which then

    asked by Dee
  35. History

    I am doing well with my History class, but am struggling with a few end of chapter study questions. Please assist. What Philosophies of the enlightenment did monarchs adopt in Europe? A. They sought to use education to rationalize their political and

    asked by Keith
  36. Social Studies

    What are the basic provisions of the Missouri Compromise? Why was it important to keep a balance of slave and free states in the nation? I can't seem to find an answer that makes sense. Could someone help me out?

    asked by Denise
  37. american history

    Hi i have this for school and my text book doesnt have any of the information. Ive been online looking all day and i really need some answers for this. I have to make a timeline which shows changing relationships between the federal govt and private

    asked by brandy
  38. Literature

    Is "The Narrative of the life of Frederick Douglass" important to the American educational process in any way? Could someone explain? thanks. There is an idea in the story that education enlightens, not a wrong idea in my experience. ....The truth shall

    asked by Amy
  39. chemistry

    The percent composition of iron in a sample of steel can be determined by dissolving a sample of steel in concentrated acid. The resulting solution is then titrated with a permanganate solution. When all of the iron has reacted with the permanganate, the

    asked by manny
  40. physics

    hey guys i'm stuck on this one question and i need some help!! thanks, appreciate it..... one gallon of paint (volume=3.786 X 10^-3 m^3) covers an area of 25.0 m^2. what is the thickness of the paint on the wall?? could anybody please help guide me through

    asked by manny
  41. math/algebra

    Can someone help me with this problem....5x/7-6x/5=3/35 find the common denominator for the left side You should get it to be 35 multiply both the numerator and the denominator by the number that makes each fraction have a denominaor of 35 After this

    asked by ms jay
  42. Social Studies

    Past President John Quincy Adams said of the Missouri Compromise that it was “but a title page to a great and tragic volume.” Past President Thomas Jefferson remarked that the Missouri Compromise was “a fire bell in the night.” (or a warning bell).

    asked by Amy
  43. micole

    White light strikes a diffraction grating (930 lines/mm) at normal incidence. What is the longest wavelength that forms a second-order maximum? I used the equation [(1/d)sin(90)]/m = wavelength: [(1/0.93m)(1)] /2 = 0.5376m. To convert to nm I multiplied by

    asked by PHYSICS
  44. algabra

    Solve and graph the solution set.

    asked by edie
  45. math

    Multiply and simplify 2/3*13 The answer is 22. Right? if you mean (2/3) * 13 or 2 / (3*13) i believe according to both your answer is wrong Is that (2/3)*13? If so, then (2*13)/3= something other than 22. Or if it is 2/(3*13) = it is not 22. Show your work

    asked by KC
  46. French

    This may sound slightly weird but is there a difference in prounciation between these two words: Droite - left Doigts - Fingers I have a dialogue due and I don't want to pronounce anything wrong. - Lorena Ehrstrop I believe there's a small difference

    asked by Lorena
  47. science

    what are some of the cuases of overpopulation in Ethiopia The main cause is the food production has decreased dramatically decreased (govt sells food stocks to buy arms) and the GNP has greatly decreased due to the large non productive military.

    asked by kelley
  48. algebra

    how would you solve this; Write an equation for the hyperbola with vertices (-10,1) and (6,1) and foci (-12,1)and (8,1) The centre is the midpoint between the vertices, which is ((-10+6)/2,(1+1)/2) or (-2,1) so the equation looks like (x+2)^2/a^2 -

    asked by Marissa
  49. Physics

    I have a question that I don't understand, could you please help me? Thanks! Heres my question: A package falls off a truck that is moving at 30 m/s. Neglecting air resistance, the horizontal speed of the package just before it hits the ground is Isn't the

    asked by Soly
  50. Algerbra 050

    Is -3 a terminating decimal? How do I find out? all integers have "terminating" decimals -3 = -3.0 (try dividing -3 by 1 on your calculator)

    asked by Kourtney
  51. math

    Approximately 3 out of every 10 students at Greg's college live on campus. The college has 6,000 students. How many of them live on campus? A)

    asked by sandy
  52. math

    If $3,000.00 is deposited into an account paying 4% interest compounded annually (at the end of each year), how much money is in the account after 2 years? (Round to the nearest cent.) A)

    asked by sandy
  53. math

    A railing for a deck requires pieces of redwood 4 ft 9 in., 13 ft 9 in., and 4 ft 3 in. long. What is the total length of material that is needed? A)

    asked by sandy
  54. Science

    I have a science question that I don't quite understand. Would you have to to have physical contact to exert a force? Not necessarily. Could we blow very hard and exert a force on something? When I was a kid I liked to make paper pin wheels and blow on

    asked by Jenn
  55. math

    2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and multiply the denominator; i.e.,10. (2/3)*(1/10) = 1.8/r 2/30 = 1.8/r Now cross multiply. 2r = 30*1.8 2r = 54 Now divide both sides by 2 2r/2 = 54/2 r = 27 check my thinking. check my

    asked by sandy
  56. Physics

    I have a question. What is the difference between gravitational mass and intertial mass? http://www.thefreedictionary.com/gravitational+mass http://www.google.com/search?hl=en&ie=UTF-8&defl=en&q=define:Inertial+mass&sa=X&oi=glossary_definition&ct=title

    asked by Ashlee
  57. AP Physics

    Would it be correct to say that inertia is the reason a moving object continues in motion when no force exists? I think that is correct. Inertia is the property that allows an object to continue moving in the same direction and at the same velocity unless

    asked by Julie