Christie

Most popular questions and responses by Christie
  1. physics

    Rank the average gravitational forces from greatest to least between:A. Sun and Mars.B. Sun and the Moon.C. Sun and Earth. i answer b,c,a and its wrong

    asked on March 3, 2012
  2. chem 1

    A gas-forming reaction produces 1.35 m3 of gas against a constant pressure of 143.0 kPa. Calculate the work done by the gas in joules.

    asked on May 2, 2013
  3. PHYSICS

    If a fly collides with the windshield of a fast moving bus a) which experiences the greater impact force: the fly or the bus, or is the same force experienced by both? b)which experiences the greater acceleration: the fly or the bus or is the same

    asked on November 30, 2010
  4. chem

    the pressure 15 meters under water is 248 kPa what is the pressure in atm what is the pressure in mmHg

    asked on November 13, 2012
  5. electrochemistry

    I am soooo confused! I was given this PdCl4^2-(aq)+Cd(s)----Pd(s)+4Cl^-(aq)+Cd^2+ I am supposed to give the 1/2 reaction for The PdCl4^2- My teacher said you could figure out the charges on the atoms by, in PdCl4^2, taking the subscript and mult. by the

    asked on November 17, 2009
  6. physics

    If a trapeze artist rotates once each second while sailing through the air and contracts to reduce her rotational inertia to one-third of what it was, how many rotations per second will result?

    asked on March 3, 2012
  7. algebra/trigonometry

    A kite and a height of 75 meters from the ground is attached to a string inclined at 60 degrees to the horizontal. How do you find the length of the string to the nearest meter?

    asked on May 15, 2016
  8. Math

    Shirley is on a Ferris wheel which spins at the rate of 3.6 revolutions per minute. The wheel has a radius of 35 feet, and the center of the wheel is 51 feet above the ground. After the wheel starts moving, Shirley takes 12 seconds to reach the top of the

    asked on March 7, 2014
  9. Chemistry

    2AgNO3 + BaCl2 --> 2AgCl + Ba(NO3)2 How many grams of sliver chloride are produced from 5.0g of sliver nitrate reacting with an excess of barium chloride?

    asked on March 13, 2013
  10. chem(REALLY NEED HELP )

    calculate the total mass of carbon dioxide gas produced when you burn 1000ml of gasoline Density of heptane = 0.684g/ml density of octane =0.703g/ml a) Calculate the mass of carbon dioxide produced from combustion of heptane C7H16 + O2 ------- CO2 + H2O

    asked on December 2, 2014
  11. Chemistry

    N2 + 3H2 --> 2NH3 how many grams of ammonia is produced in the reaction?

    asked on March 13, 2013
  12. Calculus

    A pig farmer wants to enclose a rectangular area and then divide it into six pens with fencing parallel to one side of the rectangle (see the figure below). There are 610 feet of fencing available to complete the job. What is the largest possible total

    asked on April 26, 2012
  13. Essay

    In what ways were cotton production and slavery more of a burden to the South than a benefit.

    asked on November 12, 2007
  14. chemistry

    No precipitate formed when an aqueous solution of NaCl or Na2SO4 was added to the sample solution. A precipitate formed when the sample solution was made basic with NaOH. Which ion(s) are present in the sample soluiton? [Hg2]2+ [Ba]2+ [Mn]2+ I know that

    asked on October 8, 2007
  15. Physics...What am I doing wrong??

    In an experiment, a student measures the speed of sound in air to be 318 m/s at STP. If the accepted value for the speed of sound under those conditionsis 331 m/s, what is the student's percent error? a. 3.9% b. 3.93% c. 4.09% d. 4.1% I tried but it didn't

    asked on September 11, 2007
  16. Math inequalitites

    Hi, I need some help with some inequalitites. Thanks!! Use graphs to find the set. 1.(-9,0) intersection [-4,] I got [-4,0) 2. (-9,0) U [-4,10] I got (-9,10] Solve the linear inequality. Other than (empty set, use interval notation to express the solution

    asked on August 18, 2007
  17. Gen College Chemistry

    2AL+6H-->2AL+3H. What volume of hydrogen gas at STP would be evolved in a reaction of 36.0mg of 98% pure aluminum with the hydrogen being an ideal? I got the ml of hydrogen, but I don't know how to work it with AL being 98%pure.

    asked on October 22, 2008
  18. Statistics

    a. In a random sample of 500 observations , we found the proportion of successes to be 48%. Estimate with 95% confidence the population proportion of successes. B. Repeat part (a) with N=200 C. Repeat part (a) with N=1000 I need to know how to do this in

    asked on July 17, 2012
  19. physics

    To tighten a bolt, you push with a force of 72 N at the end of a wrench handle that is 0.26 m from the axis of the bolt.What torque are you exerting?

    asked on March 3, 2012
  20. physics

    In an experiment, a student measures the speed of sound in air to be 318 m/s at STP. If the accepted value for the speed of sound under those conditionsis 331 m/s, what is the student's percent error? a. 3.9% b. 3.93% c. 4.09% d. 4.1% I tried but it didn't

    asked on September 11, 2007
  21. Chemistry

    2H2O --> 2H2 + O2 if 30 mL of hydrogen in the above reaction, how many milliliters of oxygen are produced?

    asked on March 12, 2013
  22. physics

    If the radius of the Earth somehow bloated to twice its size, with no changes in mass, your weight at the Earth's new surface would be ___A) one-quarter.B) one eighth.C) the same.D) twice.E) half.

    asked on March 4, 2012
  23. principles of physics

    A 19.3- gmass of gold in the form of a cube is 1.00 cmlong on each side (somewhat smaller than a sugar cube).What would be the length of the sides of a cube having four times this mass of gold?

    asked on March 21, 2012
  24. physics

    To tighten a bolt, you push with a force of 72 N at the end of a wrench handle that is 0.26 m from the axis of the bolt.What torque are you exerting? I GOT THIS PART AS 19N *m unsure of the next two: If you move your hand inward to be only 0.10 m from the

    asked on March 3, 2012
  25. chemistry

    would the measure absorbance id an FENCS+ ion solution be higher, lower, or unaffected if there were fingerprints on the cuvette? briefly explain.

    asked on March 20, 2011
  26. Chemistry

    2H2O --> 2H2 + O2 if 30 mL of hydrogen in the above reaction, how many milliliters of oxygen are produced?

    asked on March 12, 2013
  27. physics

    Which of these three produces a greater tidal effect on you right now—the moon, the Earth, or the sunA) The sun.B) The Earth.C) The moon.

    asked on March 4, 2012
  28. principles of physics

    Find the density of a 4.2- kg solid cylinder that is 13 cm tall with a radius of 5.0 cm.

    asked on March 21, 2012
  29. physics

    Why is your weight not one-quarter as much when you climb to the top of a twice as tall tree? A) Because, quite simply, of Newton's law of action and reaction.B) Because parts of the tree itself gravitationally attract you.C) But it is, in accord with the

    asked on March 4, 2012
  30. Essay

    Assess America's contribution to the Allied victory in World War I. Do you think that the US's involvement was crucial to victory? Why or why not.

    asked on February 6, 2008
  31. physics

    it takes about 560 kilowatts to run a diesel locomotive at speed around 180km/h.Magnetically levitated trains(mag levs) on the other hand require less power because the magnetic levitation eliminates energy loss to friction.The worst maglev system requires

    asked on November 23, 2014
  32. Chemistry

    Given the following equation: 2CH3CO2H + Ca(OH)2 --> Ca(CH3CO2)2 +H2O If you start with 30 ml of a 5% solution of acetic acid, how much of a .1M Ca(OH)2 solution would it take to completely neutralize the acid? I'm not quite sure how to start? Should I

    asked on December 4, 2012
  33. Essay (again)

    Assess America's contribution to the Allied victory in World War I. Do you think that the US's involvement was crucial to victory? Why or why not. I am not really looking for anyone's specific opinion, just websites that will give me the info i need to

    asked on February 7, 2008
  34. Statistics

    A normally distributed population has a mean of 40 and a standard deviation of 12. What does the central limit theorem say about the sampling distribution of the mean if samples of size 100 are drawn from this population.

    asked on July 17, 2012
  35. Statistics

    The Centers for Disease Control and other organizations are interested in the health benefits of breastfeeding for infants. The National Immunization Survey includes questions about breast-feeding practices, including the questions about breast-feeding

    asked on May 15, 2012
  36. physics

    The distance between two telephone poles is 54 m. When a 2.0 kg bird lands on the telephone wire midway between the poles, the wire sags 0.16 m. How much tension in the wire does the bird produce? Ignore the weight of the wire. Answer in units of N.

    asked on October 4, 2014
  37. PHYSICS

    A 3kg mass is observed to accelerate 20m/s^2, 20 (degrees). Two forces act on the object. One force is 4.5N, 45 (degrees). Find the other force.

    asked on November 30, 2010
  38. Math

    Without multiplying, Emily knew that 4/9 was greater than 4/10. Explain how she knew

    asked on November 28, 2017
  39. phsycis

    consider the vector F1: (27N,20°)The angles are measured from the positive x axis with the counter-clockwise angular direction taken as positive. Consider the vector:F2=-F1 What is in degrees as measured from the positive x in the counter-clockwise

    asked on August 31, 2014
  40. Trigonometry

    [sinxcosx/(1+cosx(]-[sinx/(1-cosx)]= -(cotxcosx+cscx)

    asked on December 4, 2007
  41. US History

    What delayed the annexation of Texas (other than the threat of war with Mexico)? I already checked out wikipedia. Thanks.

    asked on November 28, 2007
  42. WORLD GEOGRAPHY

    In modern India, the "Garden City" of---- is know as India's "Silicon Valley"

    asked on December 29, 2013
  43. Math

    What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia? N2 + 3H2 --> 2NH3

    asked on March 12, 2013
  44. Statistics

    I am stuck on this probability question: Any suggestions of where to start would be great!! Thanks! Given 20 people, what is the probability that among the 12 months in the year there are 2 months containing exactly 4 birthdays each and there are 6 months

    asked on February 12, 2010
  45. physics

    about how many nickels equal a kilogram? 4.A mass of one kg of nickels has a monetary value in the US $ of approximately: a. $1 b. 10 cents c. $10 d. $1000

    asked on September 11, 2007
  46. Physics

    A particle moves according to the equation x(t) = (10 m/s2) t2 where x is in meters and t is in seconds. Find the average velocity for the time interval from t1 = 2.0 s to t2 = 3 s. Answer in units of m/s. Please help! I have no idea how to set this up :(

    asked on September 7, 2014
  47. Chemistry

    2H2O --> 2H2 + O2 if 30 mL of hydrogen in the above reaction, how many milliliters of oxygen are produced?

    asked on March 12, 2013
  48. Statistics

    A reseacher would like to determine whether a change in lighting to full spectrum light bulbs increases productivity on an assembly line. A sample of n= 36 participants is obtained, and the light bulbs over the line are replaced. under general/historical

    asked on July 12, 2012
  49. electrochemistry

    If I have 2- 1/2 reactions that are- O2(g)+4H(aq)+4e- -------2H2O and CyFe3+(aq) +e---------CyFe2+(aq) How do I determine the # of electrons transfered? In addition, if the electrons are on different sides of the equations how would I then determine the #

    asked on November 15, 2009
  50. Gettysburg Address

    What does Lincoln say must happen to ensure that the soldiers that dies at Gettysburg did not die in vain?

    asked on January 2, 2008
  51. history

    Who is the current leader of Russia? Is it Victor Zubkov or Vladmir Putin?

    asked on October 8, 2007
  52. Algebra

    How did solve 7X-2y=32 19-5y=-X using the substitute method

    asked on November 8, 2016
  53. Math

    Using the equation B=p(1+r)^n [B, Balance; p, principal deposit; r, rate; n, number of interest periods]. Find the balance when you have $17,500 in the bank at 4.25% compounded annually for 6 years. I know the answer but not how to do it.

    asked on February 12, 2015
  54. adult education

    at the end of an interview you are asked this question "how is this interview going" ,what is the appropriate response

    asked on October 31, 2009
  55. Englsih

    Can i have your opinion about taking the High School Exit Exam...do you want to take it or not and why?

    asked on March 6, 2008
  56. Math

    Ariana took 2 h longer to drive 360 mi on the first day of a trip than she took to drive 270 mi on the second day. If her speed was the same on both days, what was the driving time each day? Start with time, t. If t is the time in hours the first day, then

    asked on July 3, 2007
  57. Math

    find the domain: 1/(x^2+2x-3)=square root of x

    asked on August 15, 2011
  58. Corporate Finance

    Taylor Inc. has preferred perpetual stock outstanding that has a par value of $100 per share and a dividend yield of 9.4% of stated value. If the appropriate interest rate for Taylor’s preferred stock is 8.3%, how much is each share of preferred stock

    asked on April 4, 2010
  59. Macro economics

    Between year 1 and 3 the price level has risen and real GDP has fallen. During the same time W has risen. Identify one comination of changes in the labor supply and labor demand that could have the effect in the classical goods and services market.

    asked on February 15, 2008
  60. humanity

    8. Newspapers, once available only in print, have evolved into 24-hour multimedia operations. In addition to newspapers, briefly describe the evolution of movies, television, Internet, books and magazines, and media companies throughout the last century.

    asked on January 28, 2011
  61. chemistry

    how do I set up a problem for the solubility product(Ksp) of a salt given the osmotic pressure at 781atm?

    asked on November 11, 2009
  62. New Nationalism

    How did new nationalism respond to industrilization?

    asked on January 31, 2008
  63. Government

    Does anybody have any ideas as to where i can finde info about the Democrats and Republicans in the late 1800s, other that wikipedia?

    asked on January 6, 2008
  64. Civil War

    What was the role of the Emancipation Proclamation in the formulation of Northern trategy and war goals?

    asked on December 10, 2007
  65. Math

    How many sides are there in an argument?

    asked on September 28, 2007
  66. math 156

    how are concepts of the greatest common factors divisibility, and lowest common multiple used when computing fractors? provide an example and demonstrate how the concepts are used.

    asked on June 23, 2009
  1. Math

    That is the same answer that I got but somebody told me it was wrong. Can't see how it is wrong because the only two variants are the cows and chickens.

    posted on December 13, 2017
  2. chemistry

    Which of these pressures is the lowest? 1.1atm, 16.7psi, 740mm Hg, 111458 pa

    posted on March 7, 2017
  3. algebra/trigonometry

    Oh the mistake was me putting sin60 over 75. I understand the concept.

    posted on May 16, 2016
  4. algebra/trigonometry

    Yes it did. I just wasn't familiar with the concept but thanks.

    posted on May 16, 2016
  5. algebra/trigonometry

    I divided sin 60 degrees and 75 and got 0.0115.

    posted on May 15, 2016
  6. Math

    Yes, I've done that obviously, but I need to show work.

    posted on February 12, 2015
  7. chem(REALLY NEED HELP )

    thats all the info we are given but i found the mass using the formula density= mass/volume mass of heptane is 648 grams and mass of octane is 703 grams i just don't know what to do next

    posted on December 2, 2014
  8. S.S. Check answers

    thx yalll all those answers helped

    posted on October 22, 2014
  9. Chemistry

    How would I convert 5% to M?

    posted on December 4, 2012
  10. physics

    hmmmmm. You have been given a tricky one I don't know good luck

    posted on April 10, 2012
  11. algebra

    It depends how you look at it.

    posted on April 10, 2012
  12. physics

    If you move your hand inward to be only 0.10 m from the bolt, find the force that you should exert to achieve the same torque.

    posted on March 3, 2012
  13. Corporate Finance

    Figured it out: dividend yield x par value divided by interest rate .094*100/.083 = $113.25

    posted on April 4, 2010
  14. Statistics

    never mind got it

    posted on February 12, 2010
  15. Statistics

    PLEASE HELP :)

    posted on February 12, 2010
  16. Gen College Chemistry

    Thanks so much! Sorry about the equation, it was 3 H2.

    posted on October 22, 2008
  17. Chemistry

    For some reason, this isn't working out for me. Can you further help me? I am very confused.

    posted on October 7, 2008
  18. Englsih

    how is the exit exam an opportunity though?...for you to go to the college you wanted?

    posted on March 6, 2008
  19. Englsih

    but in your opinion...do you think students should or should not take the exam because i am writing a persuasive essay and i need ideas...my con is that the ELD students are usually not ready for the exit exam that may cause problems for them...now i need

    posted on March 6, 2008
  20. English

    I think that it is an appropriate way to start a sentence, but a better usage of "you see" would be at the end of a sentence. I had a dream you see. It really depends on the setence and what you are trying to convey.

    posted on February 6, 2008
  21. Essay

    I'm not really looking for opinions. What i need is some good websites that will give me the info i need to form my own opinion.

    posted on February 6, 2008
  22. biology

    a cork

    posted on January 2, 2008
  23. EMERGENCY!!!

    a good website is webmd with a perid and then a com at the end

    posted on November 19, 2007
  24. APUSH

    APUSH means Advanced Placement United States History. The United States in the 1800s.

    posted on November 12, 2007
  25. history

    thankyou

    posted on October 8, 2007
  26. history

    i think it is Putin but I'm not all so sure

    posted on October 8, 2007
  27. Pre-Algebra

    the rule is subtract 15 (from every 5)

    posted on October 8, 2007
  28. Pre-Algebra

    the rule is subtract 15

    posted on October 8, 2007
  29. Math

    there is a number answer, which is y i am confused.

    posted on September 28, 2007
  30. science

    That isn't a question

    posted on September 11, 2007
  31. social studies

    aka Dred Scott vs. Sanford, In what is perhaps the most infamous case in its history, the court decided that all people of African ancestry -- slaves as well as those who were free -- could never become citizens of the United States and therefore could not

    posted on September 11, 2007
  32. calculus

    f*g= 2(3x+2)^2-(3x+2) G*f= 3(2x^2-x)+2 f*f= 2(2x^2-x)^2-x g*g= 3(3x+2)+2

    posted on September 11, 2007
  33. MATH

    3x^2+20x+12 x^2+20x+36 (3x+_a_)(3x+_b_) What times wat =20 is a and adds up to 36 is b Then divide a by 3 and b by 3 giving u: (x+__)(x+__) then make x = to 0 x+__=0 x+__=0 subtract over the number and you will have your answer

    posted on September 11, 2007