Questions Asked on
March 9, 2007

  1. Physics

    A thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle and released. What is the speed of the ball at the

    asked by Technoboi11
  2. pre-algebra

    write an inequality for the sentence. The total t is greater than five. Well your answer is going to be T and the sign for greater than is simply >. So the answer would be T > 5 ok again my name is above. i was just wondering what pre-algebra was? i mean i

    asked by Joe
  3. Math help??

    Find the missing length of the right triangle if a = 7 and b = 24. Read the followng and see if it hepls to solve this. If you still don't get it repost your answer. a sqaured+b squared=c squared 7

    asked by carol
  4. calculus

    find dy/dx y=ln (secx + tanx) Let u= secx + tan x dy/dx= 1/u * du/dx now, put the derivative of d secx/dx + dtanx/dx in. You may have some challenging algebra to simplify it. Use the chain rule. Let y(u) = ln u u(x) = sec x + tan x dy/dx = dy/du*du/dx

    asked by amy
  5. English

    I'm writing a term paper for history, and I wondering which is correct: The 1920s was a period of... The 1920s were a period of... The first one sounds correct to me, but I want to be sure that the subject and verb agreed. According to all the information

    asked by Chris
  6. algebra,math,help

    Use Property 2 to simplify each of the following radical expressions. sqrt (10)/ sqrt(49) My answer: sqrt (10) / (7) THis next one i need help: Use the properties for radicals to simplify each of the following expressions. Assume that all variables

    asked by jas20
  7. Physics

    ELECTRIC FIELDS AND EQUIPOTENTIAL SURFACES 1.what condition must exist to have a region of nearly uniform electric fields 2.where are regions of strongest and weakest electric fields located Nearly always, there are flat equipotential surfaces. There are

    asked by Nicole
  8. Econ MC

    Externalities cause markets to a. fail to allocate resources efficiently. b. cause price to be different than the equilibrium price. c. benefit producers at the expense of consumers. d. cause markets to operate more equitably. I think the answer is a)?? I

    asked by Anonymous
  9. chemistry

    NaCN + H2O = HCN + NaOH Is this equation balanced ok? Yes, it is balanced. thanks very much

    asked by Hol
  10. Identifying Fallacies

    Give example of fallacy from newspaper editorial and another one from an opinion magazine. We do not do your homework for you, but here is a great site for explaining fallacies.

    asked by Sharon
  11. Sequence

    Find the common difference and a formula formula for the nth term of the arithmetic sequence; 6, 2, -2, -6, -10,...a sub n = a)6-4n b)6-2n c)10-2n d)10-4n I think it is c but want to check. Ao is 10, then each term subtracts 4n from it....n=1, ... well if

    asked by raven31792
  12. Physics

    Zero, a hypothetical planet, has a mass of 1.0 1023 kg, a radius of 3.0 106 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0 107 J, what will be its

    asked by Technoboi11
  13. English

    Hello ^^ I need your help. I hope you can help me. Can someone please explain me these quotes and tell me what you think about them: A life without adventure is likely to be unsatisfying, but a life in which adventure is allowed to take whatever form it

    asked by Hope
  14. donating to charity

    What are the pros and cons of donating to charity? my opinion i could be wrong but the pros is helping others in need. By doing so you provide a good deed. Also put yourself in their shoes. As for the cons that sometimes individuals who aren't the needy

    asked by Anonymous
  15. Algebra 2

    I am trying to factor a 4th degree polynomial that does not have any rational roots. I need to somehow get it factored into two quadratics. Anyone know of a method to use. 3x^4 - 8x^3 - 5x^2 + 16x - 5 Two of the irrational roots are 1.135.. and 0.382.. but

    asked by Brenda
  16. Physics

    Zero, a hypothetical planet, has a mass of 1.0x10^23 kg, a radius of 3.0x10^6 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0x10^7 J, what will be

    asked by Technoboi11
  17. social studies Hinduism

    Looking for information on hinduism: 1) Considering that Hiduism lacks a united belief system, what makes up the hindu religion? 2)What are the cultural and societal influences that have made hinduism vital to the region in which it originated? 3) Explain

    asked by sue
  18. Social Studies

    HELP!! I am writing an essay about comparing and contrasting slaves and indentured servants, and I need help coming up with a conclusion paragraph!! Anyone have ANY IDEAS?!?!?!?!? Your concluding paragraph should not introduce any new information. It

    asked by no name please
  19. Chemistry please check!

    A 0.21g sample of sulfuric acid is dissolved completely in sufficient water to make 0.25 litre of final solution. Calculate the hydrogen ion concentration in mol1-1 in this solution and show successive steps in the calculation: If 0.21g in 0.25l then 0.84g

    asked by Hol
  20. Animals

    Please unscramble ubrocai caribou

    asked by Anonymous
  21. psychologgy

    I am having trouble with this assignment. I don't want answers to all of these but if you could help me with one so i get an idea of the assignment. no chart needed just an example. pleeze. thanks Using a simple chart for display, create mnemonics for the

    asked by key
  22. criminal justice

    How would advances in criminal justice technology would improve resource deployment. More specifically, in addition to giving an overview and several examples of advancing technologies in the criminal justice field, with the main focus on information and

    asked by Jo
  23. chemistry

    I have to draw Lewis structures for hydrogen cyanide and cyanogen with nitrogen valency of three. Would I still need 2 dots after the N in hydrogen cyanide or would this represent nitrogen with a valency of 5? Yes. THose two "dots" are unshared electrons.

    asked by Hol
  24. calculus

    relative extrema x^3 + 1/2x^2 - 2x + 5 Ok I have 3x^2 + x - 2 = 0 Am I on the right track? I think i know why I kept on asking for help with these pribelms. I forgot the step of factoring. Please check... 3x^2 + x - 2 = 0 (3x-2)(x+1)=0 x=2/3, x=-1 Correct.

    asked by dee
  25. Biology 101

    What are the factors that cause cells to reproduce in mitosis and meiosis depends on the cells. there's a huge difference between a livwr cell, nerve cell, and a bacterial cell. probably your instructor is looking for answers like: growth, food supply

    asked by Amy
  26. Change Analysis

    Situation The regular night shift personnel at the warehouse were loading a truck backed up to the loading dock. A large convex mirror was placed high in the warehouse doorway to allow handcart personnel to see traffic approaching outside on the dock while

    asked by Mary
  27. structural formulae


    asked by honey
  28. physical science

    i have 25 examination quesions i need answered. can you help me? We can help you with some of them if you post them individually and show your own work or thoughts. We don't do exams for you here.

    asked by cynthia
  29. Calculus

    relative extrema x^4-2x^2+5 so far I know how to find the derivative which is 4x^3-2x now I am stuck... Please help Huh? 4x^3-2x=0 2x(2x^2-1)=0 and what are the roots? I will give you a hint: one is x=0 The other two are in the second parenthesis. Is it

    asked by dee
  30. chemistry

    I am trying to work out the abbreviated structure formula of the products of the complete hydrolysis of tocainde together with any new functional groups formed. I am somewhat stuck and have got only as far as identifying the functional groups in tocaine.

    asked by layla
  31. history

    Why were hobos called what they were? After the stock market crashed what did people do with their stock? hobo 1889, Western Amer.Eng., of unknown origin, perhaps related to early 19c. Eng. dial. hawbuck "lout, clumsy fellow, country bumpkin." Or from ho,

    asked by ben
  32. Math

    Here's a chalenging one that i can't do at all. A deck of cards has 6 yellow, 6 green, and 5 black cards. You pick four cards from the deck. Cards are not returned after they are picked. What's the probability of picking- first not green, second not green,

    asked by Jason
  33. calculus

    Find the lenght of the sides of an isosceles triangle with a given perimeter if its area is to be as great as possible. let k be the the length of the two iso sides, so the other side is P-2k. Call that the base. Using Heron's formula:

    asked by amy07
  34. factoring completly

    can anyone help me with these: 3x2 + 17x + 10 5y8 - 125 a2 - 2ab - 15b2 4c2 - 12c + 9 5 y^8 - 125 = 5(y^8 - 25) y^8 - 25 can be written (y^4 - 5)(y^4 + 5) For the others, you need to try a few factors until you find a pair that works. For example, a^2 -

    asked by mike
  35. Math (limits)

    Find the limit or state that the limit does not exist for 3sub n +2 / n Choices a)=0 b)does not exist c)=3 d)=2 I believe the answer is either 3 or 2 but I can't decide which. what is 3 sub n? sub n means subscript

    asked by Kellie
  36. Science Check

    1)Two balls having the same mass of 1 kg roll toward each other, each moving at the same speed of 1 m/s. What is the combinded momentum? Would it be 0 kg m/s 2)A 30 kg girl and a 25kg boy face each other on friction free roller blades. The girl pushes the

    asked by Abby
  37. genetics (again)

    i asked this question...when subcloning a gene and inserting it into a vector you normally would use x-gal to locate transformants if x-gal is not available what are the alternatives...and thankyou for the alternatives but i was wondering if there was any

    asked by steph
  38. Math (triangles)

    Given b=48, A=36 degrees find the remaining parts of the right triangle. B= a)144 degrees b)154 degrees c)54 degrees d)64 degrees We know that one angle equals 36 and since it is a right triangle another must equal 90. The sum of the angles of a triangle

    asked by melinda
  39. Math

    Why is this problem 37,1% correct. Sam scored 45 points againd Memphis in an NBA game. He made 13 of 37 shots what was his shooting percentage? Multiple choice test. 37% 37.4% 37.1% 37.3%

    asked by Amber
  40. chemistry

    A drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of "40m2". Assume that the oil film has a uniform thickness equal to the diameter of a oil molecule. Calculate the

    asked by angel
  41. math,help

    What is missing of the binominal in the following: (radical 3 minus 2) ( ?) = -1

    asked by jas20
  42. Research Paper

    can someone tell me what the MLA style is? my textbook is requiring it for my paper but is not explaining it? Here are some MLA websites; the first one is the most thorough and the best: (Broken Link Removed)

    asked by Jonathan
  43. Re: Physics/Math

    Posted by Technoboi11 on Wednesday, March 7, 2007 at 1:09am. Zero, a hypothetical planet, has a mass of 1.0x10^23 kg, a radius of 3.0x10^6 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched

    asked by TechnoBoi11
  44. Math (triangles)

    Given b=48, A=36 degrees find the remaining parts of the right triangle. a= a)51 b)35 c)66 d)29 and c= a)35 b)26 c)82 d)59 This one I'm lost on! a = b tan A = 34.8 (round it off to 35) c = b/cos A = 59.3 (round it off to 59)

    asked by melinda
  45. Trigonometry Paper Urgent!!!

    I am writing a paper on the 8 trigonometric identites but can't find any information on them. Please does anyone know of any websites that would have things like their history, development, applications in ancient times, origins, etc. Please help.

    asked by kate 316
  46. math,help

    What are two consecutive integers whose square roots are also consecutives integers? 0 and 1 Thank you for helping me Rom how do you know that its 0 and 1....

    asked by jas20
  47. math

    the length of a rectangle is 7/8 yards and its width is 32/49 yards what is its area in square yards? 7/8 times 32/49 = 224/392 now simplify (the lowest common denominator is 56) so 224/392 = 4/7 So there is 4/7 of a square yard in the rectangle Thank you

    asked by carmen
  48. SS Statistics

    Hello. Does anyone have any statistic graphs of the Chinese and or Mexican Immigrants? Thx, Dallas Check the graphs at the bottom of the article.

    asked by Dallas
  49. Williamsburg

    Kobe Bryant scored 62 points against the Dallas Mavericks in an NBA game. He made 17 of 29 shots. What is his shooting percentage? The answer should be 17%. How do you get that? I have calculated the answer to be 58.6%. the score was 17 out of 29, so 17 is

    asked by Amber
  50. uhoif[wefj ejkhe

    what is frustration?

    asked by harsha
  51. Com 215

    Inclusive Language Quoting from Biased Material. Help with this sentence. Back in the 1400s, the laws govening the people were quite specific. "All men shall tithe 10% to the church and pay taxes every six months. All men can attend school until they ae 16

    asked by Nesie
  52. maths

    x^2+x=12 Since you do not ask a specific question, I assume that you want to find the factors. x^2 + x - 12 = 0 From the above, for the center term, you are looking for two values whose product is -12 and whose sum is +1. (x + 4)(x - 3) = 0 I hope this

    asked by Helen