Christie
Most popular questions and responses by Christie
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 
chem 1
A gasforming 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 
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 
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 
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 
physics
If a trapeze artist rotates once each second while sailing through the air and contracts to reduce her rotational inertia to onethird of what it was, how many rotations per second will result?
asked on March 3, 2012 
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 
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 
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 
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 
Chemistry
N2 + 3H2 > 2NH3 how many grams of ammonia is produced in the reaction?
asked on March 13, 2013 
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 
Essay
In what ways were cotton production and slavery more of a burden to the South than a benefit.
asked on November 12, 2007 
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 
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 
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 
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 
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 
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 
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 
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 
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) onequarter.B) one eighth.C) the same.D) twice.E) half.
asked on March 4, 2012 
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 
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 
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 
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 
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 
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 
physics
Why is your weight not onequarter 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 
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 
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 
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 
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 
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 
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 breastfeeding practices, including the questions about breastfeeding
asked on May 15, 2012 
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 
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 
Math
Without multiplying, Emily knew that 4/9 was greater than 4/10. Explain how she knew
asked on November 28, 2017 
phsycis
consider the vector F1: (27N,20°)The angles are measured from the positive x axis with the counterclockwise angular direction taken as positive. Consider the vector:F2=F1 What is in degrees as measured from the positive x in the counterclockwise
asked on August 31, 2014 
Trigonometry
[sinxcosx/(1+cosx(][sinx/(1cosx)]= (cotxcosx+cscx)
asked on December 4, 2007 
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 
WORLD GEOGRAPHY
In modern India, the "Garden City" of is know as India's "Silicon Valley"
asked on December 29, 2013 
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 
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 
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 
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 
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 
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 
electrochemistry
If I have 2 1/2 reactions that are O2(g)+4H(aq)+4e 2H2O and CyFe3+(aq) +eCyFe2+(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 
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 
history
Who is the current leader of Russia? Is it Victor Zubkov or Vladmir Putin?
asked on October 8, 2007 
Algebra
How did solve 7X2y=32 195y=X using the substitute method
asked on November 8, 2016 
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 
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 
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 
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 
Math
find the domain: 1/(x^2+2x3)=square root of x
asked on August 15, 2011 
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 
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 
humanity
8. Newspapers, once available only in print, have evolved into 24hour 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 
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 
New Nationalism
How did new nationalism respond to industrilization?
asked on January 31, 2008 
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 
Civil War
What was the role of the Emancipation Proclamation in the formulation of Northern trategy and war goals?
asked on December 10, 2007 
Math
How many sides are there in an argument?
asked on September 28, 2007 
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

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 
chemistry
Which of these pressures is the lowest? 1.1atm, 16.7psi, 740mm Hg, 111458 pa
posted on March 7, 2017 
algebra/trigonometry
Oh the mistake was me putting sin60 over 75. I understand the concept.
posted on May 16, 2016 
algebra/trigonometry
Yes it did. I just wasn't familiar with the concept but thanks.
posted on May 16, 2016 
algebra/trigonometry
I divided sin 60 degrees and 75 and got 0.0115.
posted on May 15, 2016 
Math
Yes, I've done that obviously, but I need to show work.
posted on February 12, 2015 
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 
S.S. Check answers
thx yalll all those answers helped
posted on October 22, 2014 
Chemistry
How would I convert 5% to M?
posted on December 4, 2012 
physics
hmmmmm. You have been given a tricky one I don't know good luck
posted on April 10, 2012 
algebra
It depends how you look at it.
posted on April 10, 2012 
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 
Corporate Finance
Figured it out: dividend yield x par value divided by interest rate .094*100/.083 = $113.25
posted on April 4, 2010 
Statistics
never mind got it
posted on February 12, 2010 
Statistics
PLEASE HELP :)
posted on February 12, 2010 
Gen College Chemistry
Thanks so much! Sorry about the equation, it was 3 H2.
posted on October 22, 2008 
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 
Englsih
how is the exit exam an opportunity though?...for you to go to the college you wanted?
posted on March 6, 2008 
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 
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 
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 
biology
a cork
posted on January 2, 2008 
EMERGENCY!!!
a good website is webmd with a perid and then a com at the end
posted on November 19, 2007 
APUSH
APUSH means Advanced Placement United States History. The United States in the 1800s.
posted on November 12, 2007 
history
thankyou
posted on October 8, 2007 
history
i think it is Putin but I'm not all so sure
posted on October 8, 2007 
PreAlgebra
the rule is subtract 15 (from every 5)
posted on October 8, 2007 
PreAlgebra
the rule is subtract 15
posted on October 8, 2007 
Math
there is a number answer, which is y i am confused.
posted on September 28, 2007 
science
That isn't a question
posted on September 11, 2007 
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 
calculus
f*g= 2(3x+2)^2(3x+2) G*f= 3(2x^2x)+2 f*f= 2(2x^2x)^2x g*g= 3(3x+2)+2
posted on September 11, 2007 
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