Questions Asked on
December 6, 2006

  1. Physics

    A sled weighing 60 N is pulled horizontally across snow so that the coefficient of kinetic friction between the sled and the snow is 0.100. A penguin weighing 70 N rides on the sled. If the coefficient of static friction between the penguin and the sled is

    asked by Armando
  2. Government Essay

    I'm having a lot of trouble with this writing prompt: Discuss the reasons why the powers of the president expanded during the 20th century, compared to the 19th century and provide 3 examples of increased presidential powers. Presidential powers expanded

    asked by cbarnett
  3. modern world history

    how did the agricultural revolution pave the way for the industrial revolution Think of all the agricultural machines that were invented to aid the growth of agriculture (example: the reaper, the cotton boller) I am sure you can find others. Then as

    asked by isha
  4. Physics-momentum/impluse

    hi well i have two questions i don't understand how to solve and all. 1) The front of a 1400-kg car is designed to absorb the shock of a collision by having a "crumple zone" in which the front of 1.2m of the car collapses in absorbing the shock of a

    asked by becky
  5. Chemistry

    "Is the following species a dipole?" NH2Cl I have drawn out the lewis dot structure of the molecule and the electronegativy values I have are N- 3.0 Cl- 3.0 H- 2.1 I know that the electronegativity difference between N and Cl is 0 and the bond is non

    asked by Alexa
  6. Algebra

    Can you explain to me how to solve this equation? 2/3x-9=1/3 1/3=.33 and 2/3=.66 now the problem is 0.66x-9=0.33 When I did this in math, I had trouble, but now I understand it. Since 0.33 is on the other side of the = then 9, you would do 0.33+9=9.33 In

    asked by Britt
  7. CHEMISTRY

    list three differences between molecular and ionic compounds, and explain how they relate to the differences in bond types.....how do i relate to the differences in bond types? List the differences and we'll talk about how they relate to the bond type. 1.

    asked by INEEDHELP!!!
  8. science

    if the force which propels the cannonball forward is 500 n, how much force will move the cannon backward? I assume -500n because forward is the opposite of backward, and 500n is the opposite of -500n. Forces occur in equal and opposite pairs.

    asked by britney
  9. MATH

    If an XTV costs 2400 and it's 25% off would the new total plus tax(0.0925)be 1,966.50? If lime green tack costs 300 and it's 40% off would the discount plus tax(0.0925) be 196.65? If a Rhino 660 costs 9000 and it is now 20% off would the new total plus

    asked by Katie
  10. Biology

    DNA was collected from 100 people and subjected to a restriction digest with BamHI. These samples were then analyzed using Stouthern blots. Three different patterns of hybridization were seen on the blots: 56 samples showed a single band of 6.3kb, 6

    asked by Tammy
  11. math,bobpursley

    Is this the correct way to solve these math problems and are the answers correct. Directions:Solve the following applications. Science. Jose rode his trail bike for 10miles. Two-thirds of the distance was over a mountain trail. How long is tehe mountain

    asked by Jasmine20
  12. math, Jay

    How do these fractions turn into the following fractions. 1/3=10/30 1/5=6/30 1/10=3/30 There is a fundamental fact of math that says if you multiply anything by one , nothing changes. but 1 = 3/3 = 10/10 etc. So if you have a fraction, and multiply it be

    asked by Jasmine20
  13. Science

    Where can I find information on how to conduct an experiemnt on the affect of humidity on the hair of mammals? Please Help ..I know someone knows the answer. PLEASE!!! please someone answer me!!!!! possably search hair coloring brand names, and call or

    asked by Brook
  14. Physics

    1.The mass of a string is , and it is stretched so that the tension in it is 180 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string? 2.A rocket engine emits of sound energy

    asked by Jena
  15. MATH

    AN AIRPLANE HEADS DUE NORTH 100MPH. IT EXPERIENCES A 20 MPH WIND FLOW IN THE DIRECTION S45(DEGREES)E. DETERMINE THE SPEED AND DIRECTION OF THE AIRPLANE. Dreaded vectors. Draw your vector diagram and do each part individually then use the x and y components

    asked by ALASKA
  16. grammar

    Yes -- future perfect tense. Right. =) Is this verb tense correct? As of December 1, Ira and Sandy will have been going together for three years. As of December 1, Ira and Sandy will have been going together for three years. As of December 1, Ira and Sandy

    asked by Writeacher
  17. math,algebra

    They may want you to add the fractions and give the answer in forms of a fraction. in that case, you need to convert to common denominators before addineg. In that case 1/3 + 1/5 + 1/10 = (10 + 6 + 3) /30 = 19/30 5/6 - 3/5 = (25 - 18)/30 = 7/30 You answer

    asked by drwls
  18. english

    Then he says, slow and scornful: "The idea of you lynching anybody! It's amusing. The idea of you thinking you had pluck enough to lynch a man! Because you're brave enough to tar and feather poor friendless cast-out women that come along here, did that

    asked by anonymous
  19. grammar

    How to fix this sentence fragment. Richard III supposedly had the young princes murdered. Found out what really happened to them. I would make it into a compound sentence. Put a semicolon after murdered; and add "no one has" before the found.....etc.

    asked by shelly
  20. grammar

    Is this semicolon placment right? The Mariners lost all three games to Milwaukee; worse yet; two star players were injured. There should not be two semicolons. The first one is fine; the second should be a comma. =)

    asked by shelly
  21. pf

    i need help with pf. Please specify what your exact question is and please label your question as to the subject, example, English, algebra, chemistry, etc. We will be happy to help you.

    asked by kahyla
  22. American Politics

    Just when i think I'm getting a handle on this stuff, I get thrown for a loop. What is the "doctrine of selective incorporation"? It's being asked in relation to the nationalization of the Bill of Rights (the process by which most of the provisions of the

    asked by Amy
  23. ENGLISH HAMLET

    Hi, would someone kind please tell me, what the symbolisms are in Hamlet? Thank you http://www.sparknotes.com/shakespeare/hamlet/themes.html =)

    asked by Al Gore
  24. Analytical Proof

    The Theorum of Apollonius states in triangle ABC, if M is the midpoint of BC, then AB^2 + AC^2 = 2AM^2 + 2MC^2. Prove this theorum using analytic methods.

    asked by Raj
  25. MATH

    solve 9x - 11 < 16 9x < 16-11 9x < 5 x < 5/9 45

    asked by Jose
  26. Science

    Can you think of ways bacteriophages can cause trouble for humans? If they destroyed beneficial bacteria in our intestinal tracs If they did that same thing to livestock.

    asked by Sam
  27. Physics

    A typical brick has dimensions of 20.0 cm by 10.0 cm by 5.0 cm and weighs 20.0 N. How does the pressure exerted by a typical brick when it is resting on its smallest side compare to the pressure exerted when it is resting on its largest side PLEASE HELP !!

    asked by anonymous
  28. Math

    Imagine that a new operational symbol for mathematics has been developed. This symbol is ~ and is represented by: a~b=ab/a-b Using this new symbol, find the value of :(2~3)~4. Just plug in. 2~3 becomes 2*3/(2-3) = -1, and -1~4 becomes -1*4/(-1-5) = -4/-6 =

    asked by Ben
  29. Genetics (plz check answer)

    Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer

    asked by Josh
  30. math

    a hat on a grid has coordinates of (0,4), (0,1), (6,1), (4, 2), (4,4), (3,5), (1,5), and (0,4). What rule would make a hat with line segments twice as long as this hat's(coordinates above) line segments and moved 8 units to the right?

    asked by AJ
  31. Pre-Cal

    Find the 5 roots of x^5+1=0 in polar and Cartesian form. (x^5 means x to the 5th power) x^5 = -1 = e^[i (2n + 1) pi] where i is any integer x = [e^[i (2n + 1) pi]]^(1/5) = e^(i pi/5)= cos pi/5 + i sin (pi/5) = e^(3 i pi/5) = cos (2 pi/5) + i sin (2 pi/5)

    asked by Jack
  32. U.S. History

    As a progressive, how did Taft compare with Roosevelt? http://www.sparknotes.com/testprep/books/sat2/history/chapter14section3.rhtml I thought Taft was a conservative. Anyway, the material you seek is in the above link.

    asked by Anonymous
  33. social studies

    gender issues applied to learning and development Boys’ stereotypes in k-12 to Grade 2 . How these issues will affect boys’ learning and development? Girls’ stereotypes in K-12 TO Grade 2. – How these issues will affect girls’ learning and

    asked by Abigail
  34. grammar

    Is this pronoun case correct? Perdo Martinez signed a baseball for Chad that he had used in a game. The problem with that sentence is you have a adjective clause that isn't in the right place. I would rearrange to start the sentence with For Chad, Pedro

    asked by shelly
  35. english

    I have to do a small project on popular plays in London in the 1800's, but I can't find ANYTHING on it. i've checked google and lots of other places but nothing will come up. Does anyone know a website where I could find this information?

    asked by pinkpolkadots7
  36. World History Paper

    Please provide feedback on this paper: Similarities of the American and French Revolutions The American Revolution and the French Revolution each greatly affected many people and how their countries were run. These revolutions had impact on economy,

    asked by ML
  37. American Politics

    A few questions that I can't find answers to in the book: How does the Constitution attempt to keep [federal] judges independent and removed from politics? What role does the U.S. attorney play in the federal judicial system? Thanks, Amy :) The Federal

    asked by Amy
  38. Genetics

    Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer

    asked by Josh
  39. math

    find the integral secxtanxdx and if dy/dx= 2x/y^2 and y(o) = 3 then what is y(1) equal to and differentiate 2pi + 3secx secxtanxdx = Sin(x)/Cos^2(x)dx The integral is 1/Cos(x) + c dy/dx= 2x/y^2 and y(o) = 3 then what is y(1) equal to y^2 dy = 2x dx --->

    asked by Jay
  40. American Politics

    What are the important Supreme Court rulings on freedom of expression (flag burning)? What is the Court's position on required flag saluting? I can't find anything on the first question, but for the second question, I remember my teacher saying that flag

    asked by Amy
  41. Science - Physics

    When a projectile is fired horizontally, which of the components of its motion is (A) motion at constatnt speed (B) uniformly accelerated motion (C) If the initial velocity of the projectile is increased, what effect will this have on the time it takes the

    asked by Nicole
  42. Social Studies

    What mountain range is located on the Western edge of South America? The Andes

    asked by Logan
  43. Physics!!! please help... URGENT

    Directions: Consider the following scenarios ignoring the effects of gravity: 1. You are the capitan of a spacecraft traveling in the far reaches of outer space, a great distance from any other body. Unexpectedly your radar indicates a meteor on a

    asked by Kacey
  44. Physics

    1.The mass of a string is , and it is stretched so that the tension in it is 180 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string? 2.A rocket engine emits of sound energy

    asked by Jena
  45. Chemistry

    There is a patient whose height is 5ft. 4 inches and weight is about 165 lbs. This person needs to have 0.8 mg of medication per kg body weight. How much of medication should this person have? First convert the pounds to kilograms. There are approximately

    asked by Allie
  46. microeconomics

    at point where MR=MC, when the firm incurs losses in the short run, the firm should? Continue producing, but look for ways to increase revenue or cut costs.

    asked by Yulissa
  47. Writing Inequalities

    I need some help with this problem. A number is less than the sum of twice its opposite and five. Find the number. Thank you for your help!!! If by "its opposite" you mean the same number with opposite sign, then if you let x be that unknown number x < -2x

    asked by meme1993
  48. Math - Calculus Question.

    hey can someone explain to me the relationship between the chain rule and implicit differentiation? It would be very much appreicated, thanks The chain rule is utilized whenever you have a function within a function such as cos^2 x or (5x+1)^1/2. Implicit

    asked by Andrew D
  49. trustee government

    hi where can i find more information about trustees that play a role in the congress. i already know the basic definition but i need to know what they do when it comes to the congress. do they hold property in the government or something Please post the

    asked by david
  50. MATH!!

    How do I find vertices of a curve and a hyperbola? This may help: http://www.mathwords.com/v/vertices_of_a_hyperbola.htm The vertex is where the tangent to the curve chages direction most rapidly. When the curve is symmetric about vertical or horizontal

    asked by BOB?
  51. english

    how does the purple loosestrife impact on the enviroment This site will give you that information. http://www.invasiveplants.net/plants/purpleloosestrife.htm

    asked by chemiii
  52. grammar

    Is this sentence correct? The creature sat upright and tugged at the shackles binding his ankles; Frankenstein uttered a piercing scream. Yes, it's fine.

    asked by shelly
  53. grammar

    Is this grammar correct? Of the two football players, Herman was the heaviest. No, it's not correct. You are comparing two people; therefore, you should use "heavier" rather than "heaviest." In the late 1990s, the popularity of MTV’s The Real World

    asked by shelly
  54. Chemistry

    In our text book, the formula for finding the formal charge of an element in a compound is c(sub f) = X - (Y + Z/2) where x = the number of valence electrons y= the number of unshared electrons owned by the atom z= the number of bonding electrons shared by

    asked by Alexa
  55. English

    I have a project in English and I can not find any information about it. I need a website that can help me find information on the pollution in the 1800's. Thank you for using the Jiskha Homework Help Forum. Here are some of the sites on pollution in the

    asked by scrgrl4
  56. ALGEBRA 1

    ok the question is Describe how you would help a friend who needs to simplify the expression 4x to the fourth power over 2x to the fifth power plz help thanks Act like one of the teachers in here, explain with words and step by step examples. As in: "

    asked by teri
  57. LITERAYURE

    In the house on Mango Street why doesn't Esperanza feel Nenny can be her friend? Thank you for using the Jiskha Homework Help Forum. Nenny is the little sister and older sisters usually tend to consider the younger one a pest. She is also younger than

    asked by StAR
  58. SCIENCE.... just need a web

    Do you know a website that I could find something about humidity? THANKS A LOT !!!! What exactly do you need to know about humidity? type in "humidity", except more specific, on google. http://en.wikipedia.org/wiki/Help:Contents

    asked by Mark
  59. Science

    If you lost your ability to feel (your sense of touch) would to still be able to survive even if you had your eyesight? Personally, I think so. I think we would be able to adjust. I hope I'm never put to the test. This happens to diabetics and people with

    asked by Chase
  60. English

    The question is related to the novel A Christmas Carol by Charles !@#$%^&ens, who wrote about the social conditions in the 1800's. I need to find info on the pollution situation during this time. Any suggestions?

    asked by scrgrl4
  61. Pre-Cal

    Recursive Sequences: find a formula for: 1,1,2,3,5,8,13,21 It looks like the Fibonacci sequence. Take the first two numbers and add them to get the 3rd. take the 2nd and third to get the fourth...etc. yeah, but how would i write that into a formula?

    asked by James
  62. Writing

    Study this brief analyses of the following problem. Then describe the objective in the problem. Then write an effective opening paragraph for a letter to the customer or client involved. In December, Mrs. Julie Schultz returns her leaf blower to Andersons'

    asked by Lenora
  63. English (Hamlet)

    I need help identifying 2-3 symbols in Hamlet's final soliloquy, and what they could represent. "How all occasions do inform against me, And spur my dull revenge! What is a man, If his chief good and market of his time Be but to sleep and feed? a beast, no

    asked by Alex
  64. Physics - VERY IMPORTANT

    Describe an experiment that shows that the rate at which an object falls is not affected by any horizontal motion it may have. EXPLAIN CLEARLY PLEASE!! thank you Take a dart gun, shoot it horizontally, and at the same time, drop a dart. See which one gets

    asked by Marie
  65. math

    Show that the formula for a line through two points (a1,b1) and (a2,b2) is: y=(b1-b2)/(a1-a2) * x + (a1*b2-a2*b1)/(a1-a2) The slope part looks right. Could someone explain how the y-intercept part makes sense? I would think that the y-intercept is:

    asked by mathstudent
  66. Grammar

    wondering if you can help me with these sentences: 1. African leaders are speaking out against a tradition in which widows have sex with a relative of their dead husbands because it helps to spread HIV. 2. The Ferrari was driven by a sexy woman with

    asked by Jenny
  67. math,algebra

    can someone correct this for me. Directions: Insert grouping symbols in the proper place so that the given value of the expression is obtained. 5-3* 2 + 8 * 5 -2 ; 28 My answer: 5-3*2+8* (5-2) (5-3)*2 + 8*(5-2) = 2*2 + 8*3 = 4 + 24 = 28 Thank you that

    asked by Jasmine20
  68. Science

    HELP! I need to know what the Latin meaning of Rectus femoris, Subscapularis, Masseter, and Tibialis anterior are!!!! I'ma doing a matching sheet, these are the meaning to choose from: Chewing, Under the scapular, Straight of the femur, in front of the

    asked by HumanBodyIdiot
  69. math

    -4+[3-10] Just use BEDMAS...bracket, exponent, division and multiplication, addition and subtraction. -4+[3-10] Since 3-10 is in the brackets, you do that first and get -4, so you have -4 + (-4), and your final answer is -8. Raj must have made a typo. 3-10

    asked by need help
  70. math

    i can figure this out -2+|-5+6| i try inverse but im still getting it wrong ive been stuck on this fo awhile There is no inverse in the equation. the |...| means absolute value. We perform what is indicated in the |,,| and that is +1. The absolute value of

    asked by need more help please
  71. English

    What is the role of rhetoric in influencing people's attitudes and beliefs? Posted by Ms. Sue on Tuesday, June 20, 2006 at 9:47am. Check these sites to help you answer your question. (Broken Link Removed) http://en.wikipedia.org/wiki/Rhetoric

    asked by Catrice
  72. Biology

    if the incidence of cystic fibrosis is 1 in 2500, what is the expected frequency of carriers for the CF allels? assume that this population is in Hardy-Weinberg equilibrium. I appreciate a hint to start this answering this problem. p^2 + 2pq + q^2 = 1 p +

    asked by Tammy
  73. Social Studies

    I need to locate a map that will clarify latitude and longitude as it is need for Africa Climate Region Might I suggest downloading google earth at: http://earth.google.com/download-earth.html

    asked by D-rock
  74. Pre-Calc ... need help fast

    I need help writing an equation for a Sine Wave... I have 3 coordinates, but I can't get the eq. right... (4, 25), (7, 83), (10, 25). If anyone can help, I will be more than grategull. My group bailed on me. \m/ 25 is the lowpoint and 83 is the high point.

    asked by Anna
  75. Micro

    If i buy a machine it will save me $1000 each year for 3 years. If the interest rate is 8% what is the most I should pay for the machine? 1000/.08 = 12500.

    asked by Chris
  76. science

    How do i make a mechanical device using mechanical advantage to lift an 8lb trash bag with a 1lb can of soup. Use a lever with one end eight times farther than the other end is from the flucrum

    asked by dustin hill