Questions Asked on
August 12, 2009

  1. Physics

    There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1

    asked by Sammy
  2. chem

    What VSEPR “shapes” and bond angles do you find in Toluene?

    asked by chrissy
  3. MATH Prob.

    A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?

    asked by Twg
  4. Math

    The perimeter of a rectangular field is 302 yards. If the length of the field is 84 yards, what is its width?

    asked by Karl2472
  5. physics

    does the slope of a distance vs. time graph show the average velocity or the instaneous velocity I'm asked the question and don't know which one. I believe that it would be the instaneous value because the slope is refering to one point on the graph... not

    asked by physics
  6. hISTORY

    Which of the following had the greatest impact on women's lives after World War I? A. New Deal programs B. labor-saving devices C. equal-opportunity laws D. the creation of many new jobs

    asked by Warda
  7. Physics

    There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1

    asked by Sammy
  8. Differential calculus

    Given that f(x)=x, g(x)=x-1: h(x)=sqrt(x-1) find f0g0h.

    asked by Matrix school 2
  9. Math

    I need to find the missing length of a right angle if one side is 7 and one is 25?

    asked by Richard
  10. MATH Prob.

    The number of accidents that occur at the intersection of Pine and Linden streets between 3 p.m. and 6 p.m. on Friday afternoons is 0, 1, 2, or 3, with probabilities of 0.84, 0.13, 0.02, and 0.01, respectively. Graph this probability distribution. What is

    asked by Twg
  11. Physics

    A -3.5 uC charge experiences a 13N i hat electric force in a certain electric field.What would the force be for a proton experience in the same field? I amd doing this 13/-3.5=-3.7 then multiplying 1.6*10^19 where did i go wrong

    asked by Sammy
  12. Differential calculus

    Given that f(x)=x, g(x)=x-1: h(x)=sqrtx-1. find f0g0h.

    asked by matrix school 2
  13. science

    ok my summer homework is to explain how the si system is used in the scienetific community. HELP!

    asked by bobbie
  14. social studies

    Farming to obtain food requires time. This leads people permanent villages. Which of the following native-american groups developed settlements due to their farming practices?

    asked by keisha benson
  15. statistics

    A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s² = 19.5. Determine the 98% confidence interval for ó².

    asked by Laura
  16. MATH Prob.

    Five numbers are to be picked, without repetition, from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers is insignificant, how many different ways can a winning quintuple be selected? What is the

    asked by Twg
  17. Physics

    ok were doing a lab h t t p: / /i m g2 0 0. i m a ge s h a c k. u s / im g 2 0 0 / 30 3 8 /s k e t c h 2 p q g. j p g the timer in the picture makes a mark on the tape at a set interval... my question is well what is actually is happening is that I'm

    asked by QUESTION
  18. history help plz

    Although it put many farmers out of work, the _____ made English farming more productive.

    asked by gabriel
  19. Math

    A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?

    asked by Kati
  20. math

    A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?

    asked by scooby91320002
  21. statistics

    For three independent samples, each with n= 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same.

    asked by Laura
  22. Physics

    There is a figure q1= 23 uC and q2= 16 uC. The force on q1 points in the -x direction. q1 is at (0,1) q2 is at (2,0) q3 is at (2,2) What is the magnitude of the force on q1? I am doing this (9*10^9)(23*16)(-4ihat)7^3 where did i go wrong?

    asked by Sammy
  23. MATH Prob.

    Battery Power Problem. A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15 hours. What proportion of these batteries can be expected to have lives of 322 hours or

    asked by Twg
  24. MATH Prob.

    A ship carries exactly 10 different signal flags. If each possible combination and ordering of 4 of these flags connotes a specific message, how many signals can be sent with these flags, taken 4 at a time?

    asked by Twg
  25. science

    Describe the benefits of the human genome project.

    asked by isabella
  26. Math

    I need to know the square root of 196.

    asked by Brandon
  27. Math

    Consider the function y=sqrt(1+cos2x)/2 (everything is under the square root) a. Can x take on any real value? b. How large can cos 2x become? How small? c. How large can 1+cos2x/2 become? How small? d. What are the domain and range of the original

    asked by Momo
  28. science

    how do scientists use measuremnets?

    asked by bobbie
  29. math

    y=x^2e^x I am suppose to find the dy/dx of this the way i did it was x^2e^x times dy/dx of x^2 and got x^2e^x times 3x^2 this is not right and im confused on how to solve it help pls.

    asked by sonia
  30. Algebra

    Could someone work this out for me? Someone says the answer is 2.34 x 10^-6 but I think it's 2.34 x 10^-4. 2 x 10^-3 = 3 x 10^8 x 1/6 x pi x d Solving for d. Sorry it's kinda messy.

    asked by Zack
  31. geography

    How does the study of other disciplines help geographers in their work as countries become increasingly interdependent?

    asked by Hope
  32. statistics

    A random sample of n= 12 is drawn from a population that is normally distributed, and the sample variance is s©÷ = 19.3. Use ¥á = 0.025 in testing ¥Ç₀ : ¥ò©÷ ¡ 9.4 versus ¥Ç©û : ¥ò©÷ > 9.4

    asked by Yadira M
  33. MATH Prob.

    The mean systolic blood pressure of adult males is normally distributed with a mean of 138 (millimeters of mercury) and a standard deviation of 9.7. What percent of adult males have blood pressure between 161.28 and 164.9?

    asked by Twg
  34. MATH Prob.

    A study of motor vehicle rates in the 50 states reveals that traffic death rates (deaths per 100 million motor vehicle miles driven) can be modeled by the normal curve. The data suggest that the distribution has a mean of 5.3 and a standard deviation of

    asked by Twg
  35. science

    What are the advances in the field of biology?

    asked by isabella
  36. science

    Describe how genetic engineering has been used to improve plants.

    asked by isabella
  37. business statistics

    For df = 5 and the constant A, identify the value of A such that a. P(x² > A) = 0.90 b. P(x² > A) = 0.10 c. P(x² > A) = 0.95 d. P(x² > A) = 0.05 e. P(x² < A) = 0.975 f. P(x² < A) = 0.025

    asked by Lesliam
  38. calculus

    I=g^2/da

    asked by jon
  39. Differential Calculus

    (1) lim x^3 - 125/x5 x^2 - 25 (2)find the inverse of the function f(x)=7x+5

    asked by matrix school 2
  40. A.P. Economics

    Why must the opportunity cost of a decision always be something desirable?

    asked by Ami
  41. statistics

    A research organization has collected the following data on household size and telephone ownership for 200 U.S. households. At the 0.05 level, are the two variables independent? Based on the chi-square table, what is the most accurate statement that can be

    asked by Vannessa
  42. PROBABILTY

    WHAT IS AN EXAMPLE OF DISCRETE DISTRIBUTION AND CONTINUOUS DISTRIBUTIONS?

    asked by Twg
  43. MATH Prob.

    How many batting lineups of the nine players can be made for a baseball team if the catcher bats first, the shortstop second, and the pitcher last?

    asked by Twg
  44. MATH Prob.

    Estimate the number of personally constructed greeting cards possible at a machine if there are 12 designs, 30 messages, 18 closings, and 10 different paper stocks on which to print the card. Indicate how you made your estimate. How valid was your

    asked by Twg
  45. Math

    Jim rents a truck. There is a fee of $15.99, there was an additional charge of 79 cents for each mile driven Jim had to pay $172.41 when he returned the truck. For how many miles did he drive the truck?

    asked by Karl2472
  46. English

    Background Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides

    asked by Marie
  47. science

    What is a therapeutic cloning and reproductive cloning?

    asked by isabella
  48. Mechanics unscramble

    Need help. I know this is 2 words related to safety. Please unscramble GSMSAHNIDRULEAOECC

    asked by Kimberly
  49. Math

    Gasoline accounts for 85% of the motor fuel consumed in the United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. I need help

    asked by Haley
  50. Math

    A school had 900 students at the start of a school year. If there is an enrollment increase of 7% by the beginning of the next year, what is the new enrollment?

    asked by Sarah
  51. Government

    The constitution has comparatively little to say about the structure and composition of the supreme court. Identify two aspects of the court's structure and composition that the constitution does not specify.

    asked by Cherokee
  52. Math

    The United States emitted 19.5 million t of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?

    asked by Regina
  53. statistics

    A random sample of n = 30 is drawn from a population that is normally distributed, and the sample variance is s©÷ = 41.5. Use ¥á = 0.05 in testing ¥Ç₀ : ¥ò©÷ = 29.0 versus ¥Ç©û : ¥ò©÷ ¡Á 29.0

    asked by Marianne
  54. physics

    ok i'm doing a lab were walking different displacements I observed that the displacements were on different grades of steepness this would decrease the coefficent of kinetic friction?

    asked by physics
  55. check geo

    some people in the french-speaking province of ________ are interested in gaining independence from canada. A. Nunavut B. Quebic C. Alberta D. Montreal .I chose B Quebec. Canada and the united states differ i thier: A. Population B. Climate C. Goverment

    asked by henry
  56. check geo

    in the 1800s ___________ opened up the western united states to immagration and buisness. A. The transcontinental railroad B. The underground railroad C.Route 66 D.Cattle farming .The answer I chose was B .

    asked by henry
  57. check geo

    what name is given to a system of trade in which individuals can operate and profit from buissness? a)communism b)free market economy c)surplus d)monopoly its b.

    asked by henry
  58. check geo

    the united states is a leading exporter of : a)oil and natural b)rice products C)beef and grain d) cranberries and rasberries. i choose a

    asked by henry
  59. check geo

    the united states is a leading exporter of : a)oil and natural b)rice products C)beef and grain d) cranberries and rasberries. i choose a

    asked by henry
  60. english

    ive to evaluate the media by the following ways: a newspaper editorial a letter to the editor radio or television commercial a magazine advertisement ive to describe what does each one try to persuade you to believe or do. so where can i find on net all

    asked by bindiya farswani
  61. Math

    Jennifer has eleven dresses. Two of the dresses are yellow. What fraction of her dresses are not yellow?

    asked by tracy
  62. Math

    Stephanie received twenty-one email messages. Three of them were from her mother. What fraction of the messages were not from her mother? Can you please provide the answer in numeric form?

    asked by Tracy
  63. english

    Is this sentence capalized right. The striking colors of autumn leaves are admired by nearly everyone.

    asked by ????
  64. math, business?

    Business and finance. Ms. Jordan has been given a loan of $2,500 for 1 year. If the interest charged is $275, what is the interest rate on the loan?

    asked by scooby91320002
  65. science

    how do scientists use the si system?

    asked by bobbie
  66. science

    what is the si base unit for density, liquid, and rectangular solid?

    asked by bobbie
  67. social studies

    whats a site that i can get articles about prehistoric humans?

    asked by bobbie
  68. science

    how is the si system is used in the scienetific community

    asked by khris
  69. english

    is texting bad for my grammar?

    asked by bobbie
  70. foreign language

    can i learn two languages at once?

    asked by bobbie
  71. Trigonometry

    9x^4-24x^3+16x^2 (Find all solutions!)

    asked by Carl
  72. physics

    ok i saw the responses thanks still a little bit confused ok what variable is different or varaies in the sitations were you to walk say down a hill and feel that it is easier and when walking up a hill which is harder

    asked by physics
  73. 8th grade

    Fine the complete subject or predicate of the sentence. then identify the simple subject or verb. Examble; The peaks of the undersea mountains rise above the surface of the water and form islands.

    asked by keimon
  74. Business

    What insights or reactions do you have concerning what you now know about the field of business?

    asked by Anonymous
  75. business statistics

    In testing the independence of two variables described in a contingency table, determine the critical value of chi-square if the test is to be conducted at the a. á= 0.025 level and d f = 5 b. á = 0.05 level and d f = 8 c. á = 0.01 level and d f = 6 d.

    asked by Marianne
  76. business statistics

    In a test of the independence of two variables, one of the variables has two possible categories and the other has three possible categories. What will be the critical value of chi-square if the test is to be carried out at the o.025 level? At the 0.05

    asked by Marianne
  77. business statistics

    For d f = 5 and the constant A, identify the value of A such that a. P(x² > A) = 0.90 b. P(x² > A) = 0.10 c. P(x² > A) = 0.95 d. P(x² > A) = 0.05 e. P(x² < A) = 0.975 f. P(x² < A) = 0.025

    asked by Marianne
  78. math

    it is less than 60 and greater than55 if you add digits the sum is 13. write the number

    asked by chloe
  79. geography

    what kinds of geographer might be employed by a manufactering company?

    asked by Hope
  80. MATH Prob.

    How many 4-character license plates are possible with 2 letters from the alphabet followed by 2 digits, if repetitions are allowed? if repetitions are not allowed?

    asked by Twg
  81. math

    use counters to model and find these products 2(5).

    asked by Shantel
  82. MATH Prob.

    A student asks, “What’s wrong with the argument that the probability of rolling a double 6 in two rolls of a die is 1/3 because 1/6 + 1/6 = 1/3?" Write an explanation of your understanding of the student’s misconception.

    asked by Twg
  83. MATH Prob.

    A jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles? b. a red

    asked by Twg
  84. MATH Prob.

    Suppose that pizzas can be ordered in four sizes (small, medium, large, and Illini-size), with three crust choices (thin, thick, and Chicago style), four choices of meat (sausage, pepperoni, hamburger, and none) and two types of cheese (regular or double).

    asked by Twg
  85. Physics

    There is a 85 uC point charge at the origin. What is the electric field at the point x= -45cm , y= 55cm. I am doing (-.45+.55)/(-.45^2+.55^2)^3/2 Where did I go wrong? I have to find the elctric point for the Ex and Ey.

    asked by Sammy
  86. Math

    For his long distance phone service, Miguel pays a $2 monthly fee plus 12 cents per minute. Last month, Miguel's long distance bill was $24.92 . For how many minutes was Miguel billed?

    asked by Karl2472
  87. Math

    Amanda received a 70 gift card for a coffee store. She used it in buying some coffee that cost 7.37 per pound. After buying the coffee, she had 25.78 left on her card. How many pounds of coffee did she buy?

    asked by Karl2472
  88. English

    Should I double space anywhere on this? I'm replying to your advertisement in the San Jose Mercury newspaper. I understand that you’re actively seeking to hire a quality Medical Office Assistant. I worked for The Berman Skin Institute as a Front Desk

    asked by Anoym.
  89. Logarithms

    1. Find the amount of time required for an investment to double at a rate of 12.3% if the interest is compounded continuously. MY ANSWER: 5.635 yrs 2. Solve e^(0.2x) < 21.2 by using natural logarithms. MY ANSWER: X

    asked by Jackie
  90. history

    In 1905, Einstein challenged Newton's view of the universe with the?

    asked by gabriel
  91. social studies

    why understanding how to use a map is important?

    asked by Sean
  92. science

    How is recombriant DNA technology used in medicine?

    asked by isabella
  93. physics/medical physics

    please assist me to get project topic under biophysics or application of physics in medecine

    asked by mataos
  94. History

    What factors make it more likely that a bill will become law? What factors make it less likely? Is it easy or difficult to pass a bill? What are some of the advantages of passing legislation quickly? What are some of the disadvantages?

    asked by Janie
  95. 12th grade

    Where in the Constitution is the Electoral College described? (I know there are two parts)

    asked by Jordan
  96. business statistics

    It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution

    asked by Lesliam
  97. business statistics

    It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution

    asked by Lesliam
  98. business statistics

    It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution

    asked by Lesliam
  99. business statistics

    It has been reported that 10.3% of U.S. households do not own a vehicle, with 34.2% owning 2 vehicles, and 17.1% owning 3 or more vehicles. The data for a random sample of 100 households in a resort community are summarized in the frequency distribution

    asked by Lesliam