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October 25, 2014

Posts by maggie


Total # Posts: 343

Chemistry
Okay, I understand now, it's much easier than I was making it out to be! Thanks so much for your help!
November 30, 2011

Chemistry
What is wrong with these sets? Fix what's wrong: n=4, l=3, ml=4 n=2,l=-1, ml=1 I don't exactly even know what the question is asking!
November 30, 2011

BUS 640
Bridget's choice - theory of consumer behavior
November 28, 2011

physics
A mass m is gently placed on the end of a freely hanging spring. The mass then falls 29.8 cm before it stops and begins to rise. What is the frequency of the oscillation?
November 27, 2011

Physics
A mass m at the end of a spring vibrates with a frequency of 0.936 Hz. When an additional 558 g mass is added to m, the frequency is 0.634 Hz. What is the value of m?
November 27, 2011

Physics
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 5.5 J of work is required to compressed the spring by 0.16 m. If the mass is released from rest with the spring compressed, it experiences a maximum ...
November 27, 2011

Physics
A bungee jumper with mass 61.3 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 31.8 s. He finally comes to rest 25.3 m below the level of the bridge. Calculate the spring constant of the bungee ...
November 27, 2011

physics
1)A fire hose held near the ground shoots water at a speed of6.5 mps At what angle should the nozzle point in order that the water land 2.5 meters away? Answers: 18 degrees and 72 degrees 2) A long jumper leaves the ground at 45 degrees above the horizontal and lands 8 meters ...
November 22, 2011

geometry
ABCD is a rectangle. If AC=5x+2 and BD=x+22, find x.
November 20, 2011

Science
How many families are found in the Phylum Arthropoda?
November 9, 2011

math/ algebra?
a lab technician draws a sample of blood. A cubic millitmeter of the blood contains 22^3 white blood cells and 22^5 red blood cells. What is the ratio of white blood cells to red blood cells?
October 28, 2011

physics
a cannonball is fired straight up at 60m/s. how long does the flight last?
October 4, 2011

Algebra 1 (HELP PLEASE!!)
The United States Mint reported at the end of 2006 that the unit cost of producing and distributing a penny was 1.21 c. What percent of the value of a penny is this cost? What can you conclude about the cost of making pennies? • How can a model help you to visualize the ...
September 14, 2011

PHYSICS
A gas cylinder contains a mixture of carbon dioxide and oxygen, which have different molecular masses. The contents of the cylinder are in thermal equilibrium. Which of the following statements is correct? Question 1 options: A) All carbon dioxide molecules and all oxygen ...
August 16, 2011

PHYSICS
The latent heat of fusion of water is 3.34 x 105 J/kg. A farmer places a barrel containing 1000 kg of water in his barn one winter's night. When the water cools to 0oC, it begin to freeze. How much heat does the water give out while it is freezing until it has all become ...
August 15, 2011

Algebra
I have to work out this equation for my college paper and I am having trouble understanding graphs, etc. The question is C=200+50 and C=300+25. Can anyone walk me through the steps on how to graph this?
August 1, 2011

stats
TABLE 1 The general manager of a chain of pharmaceutical stores reported the results of a regression analysis, designed to predict the annual sales for all the stores in the chain (Y) – measured in millions of dollars. One independent variable used to predict annual ...
July 4, 2011

Physics
Helium is supplied in pressure tanks. If I have a 10 liter tank at 200 atmospheres of pressure, how many 3 liter balloons can I fill? (Assume the balloons are at one atmosphere)
May 12, 2011

Biology
The number of oyster beds in Chesapeake Bay,which is an arm of the Atlantic Ocean,is dwindling rapidly.what effect would this have on the surrounding area?On the human community?
May 10, 2011

College Chem
Calculate the enthalpy change for the reaction NO(g) + O(g) --> NO2(g) from the following data: NO(g) + O3(g) --> NO2(g) + O2(g) ; ∆H = -198.9 kJ O3(g) --> 1.5O2(g) ; ∆H = -142.3 kJ O2(g) --> 2O(g) ; ∆H = 495.0 kJ
May 8, 2011

Biology project
THE EVOLUTION OF BARBELLUS Describe the type of food that the diffrent Barbellus spieces might have eaten. 1.caterpillar 2 and 3.type of fish
April 20, 2011

Social Studies
Was Blitzkrieg a successfull war stratagy?
April 19, 2011

physics
Consider a single photon of red laser light, with wavelength of 633 nm (nano is 10-9). What energy does this carry? What momentum? How does the energy compare to typical atomic energies of a few times 10-19 J?
April 17, 2011

Biology
Cellular slime molds begin life as a group of seperate organisms,or individuals.After congregation,they become a single multicellular individual.Describe what is meant by this statement.
April 13, 2011

biology
specialized cells in animals are all descended from a single ancestor cell.How are the specialized and the nonspecialized cells of the cellular slime molds related?
April 13, 2011

English
the mirror is an example of magic in the movie;they use it to see where belle's father is in the forest;also the fact that at the end true love saves the beast from the trajic spell and transforms into the handsome prince.
April 13, 2011

social studies
evaluate the following statement:canada's autonomy advanced in the first three decades of the twentieth century
April 12, 2011

social studies
evaluate the following statement:canada's autonomy advanced in the first three decades of the twentieth century
April 12, 2011

spanish
La hija tiene hambre
April 2, 2011

Chemistry
when sulfur is burned in the presence of oxygen, sulfur trioxide is produced. if 3.4 x 10^24 atoms of sulfur react, how many liters of sulfur trioxide are produced?
March 17, 2011

physics
680 N. If it were more of less, the man would fall through the floor. Hope this helps!
March 16, 2011

Algebra 2
If a bicycle has a crankshaft of 40 teeth, and there are three rear sprockets attached to the rear wheel, 20 teeth, 16 teeth and 12 teeth. The diameter of the rear wheel is 60 cm. Which sprocket should be used to get the most distance in one paddle? What would the distance be?
February 22, 2011

Algebra
If a bicycle has a crankshaft of 40 teeth, and there are three rear sprockets attached to the rear wheel, 20 teeth, 16 teeth and 12 teeth. The diameter of the rear wheel is 60 cm. Which sprocket should be used to get the most distance in one paddle? What would the distance be?
February 22, 2011

calculus
Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19
February 17, 2011

calculus
Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19
February 17, 2011

business calculus
For the function f(x) = 18/(3x-14) determine the x-coordinate of any vertical asymptote
February 10, 2011

calculus
For the function f(x) = 1/(6x2+5x+16) determine if there is a vertical asymptotes
February 10, 2011

calculus
For the function f(x) = 18/(3x-14) determine the x-coordinate of any vertical asymptote
February 10, 2011

calculus
A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a. Let f(x)= x2+10x+26 2 −x2−10x−24 if x−5...
February 7, 2011

calculus
Consider the function f(x)=4x3+2x2+5, and let c be a number in the interval [01]. For what values of k is there a c in this interval such that f(c)=k?
February 7, 2011

calculus
On the graph of f(x)=3sin(2x), points P and Q are at consecutive lowest and highest points with P occuring before Q. Find the slope of the line which passes through P and Q.
February 4, 2011

calculus
A mass is oscillating on the end of a spring. The distance, y, of the mass from its equilibrium point is given by the formula y=6zcos(10wt) where y is in centimeters, t is time in seconds, and z and w are positive constants. (a) What is the furthest distance of the mass from ...
February 4, 2011

child day care
was this right answer. thanks
February 1, 2011

child day care
1,c 2,c 3,b, 4,c 5,c 6,a 7,a 8,d 9,c 10,c 11,c 12,b 13,c 14,a 15,d 16,c 17,b 18,c 19,b 20,b
February 1, 2011

Math
Thanks math helper but I am more lost than before since my choices for an answer are 25pi m2, 166.67pi m2,33.3pi m2, 100pi m2 I don't know what I am missing here. I am sorry to bother you.
January 18, 2011

Math
Can someone please help me with my math homework problem? My mom tried but she doesn't understand it. What is the surface area of a right circular cylinder with base circle of radius of 5m and height of the cylinder 10m?
January 18, 2011

Spanish
si,lo puedo ver pero donde esta? i am a fluent speaker of spanish,italien,and portugeese i lived in central america
January 12, 2011

AP Calculus AB
1. assign x and y values to the length and width of each box within the pens, and use the formula 600=9x+8y to isolate the y value (i got the 8 and 9 by counting the number of length and width values existed in the diagram) you should get y=(600-9x)/8 2. then, since they asked...
December 12, 2010

chemistry
a mixture of methane and ethane is stored in a container at 294 mmHg. The gases are burned in air to form co2 and h2o. if the pressure of co2 is 357 mmhg measured at the same temperature and volume as the original mixture, calculate the mole fraction of the gases.
December 4, 2010

business
While waiting outside a meeting room, you notice that the next middle manager making a presentation is rehearsing what he will say. The pants zipper of his blue suit is open and part of his white shirt is protruding
November 28, 2010

business
You know that you have only $110 left before you hit the limit on your credit card, and you have $8 in your wallet. You are the host to three clients. One has just announced that he is considering the lobster dinner for $40. The other two clients nod their heads.
November 28, 2010

business
A colleague, an amateur pilot, shows up at a critical meeting with some Japanese executives wearing a tie adorned with pictures of a P51D Mustang escorting a B-29 Superfortress (the Mustang is a World War II fighter and the Superfortress is the type of plane that dropped the ...
November 28, 2010

geometry
It's always a square. 26/4= 6.5 :) There's your answer
November 17, 2010

STOICHIOMETRY
2Al + 3CuSO4 ! Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess CuSO4?
November 4, 2010

Philosophy
Symbolize these arguments and display truth trees to evaluate the resulting argument forms for validity. If the argument form is invalid, describe (in English) the conditions under which the premises would be true but the conclusion false. 99.32 There will be scorpions in the ...
October 22, 2010

Philosophy
Prove informally, by employing correct definitions and principles of reasoning, that the following are true. 1/ Every formula implies itself. (That is, A implies A . Hint: For this one you will need to employ the definition of interpretation.) 2/ If set S implies formula A , ...
October 22, 2010

Philosophy
Construct natural deduction proofs for each of the following. 118.2 p&(q&r).'. q 118.4 .'. ¬(p&(q&¬p)) 118.10 q .'. ¬(¬p&¬q) 122.3* p " q, ¬p " r .'.¬q " r 122.7* p " q, ¬(p " r) .'. ¬(q " r...
October 22, 2010

ital
venti,ventuno,ventidueventitre,ventiquattro, venticinque, ventisei ventisette ventotto ventinove trenta I KNOW HOW TO SPEAK ITALIEN IF ANY MORE QUESTIONS FEEL FREE TO ASK
October 20, 2010

Physics
When will an object be in equilirium if different forces are acting on the object from the different systems? Would it be appropriate to use F=ma to find the equilibrium?
October 9, 2010

College Chemistry
what is the maximum weight of CuCl that can be prepared from the reaction sequence using 1.0g of Cu turnings to prepare the Cu2+ solution?
October 7, 2010

College Chemistry
how many grams of metallic copper are required to react with the number of moles of Cu2+ , 0.16mol, to form CuCl overall reaction can be taken as: Cu2+(aq) + 2 Cl- (aq) + Cu(s)-->2CuCl(s)
October 7, 2010

College Chemistry
The Cu2+ ions in this experiment are produced by the reaction of 1.0 g copper turnings with excess nitric acid. How many moles of Cu2+ are produced?
October 7, 2010

Geographyand socity
Owh wow....so 'Anonymous' what were you doing here if you weren't looking for answers???? Pshh your no better than us!
October 5, 2010

Physics
Small, slowly moving spherical particles experience a drag force given by Stokes’ law: where r is the radius of the particle, is its speed, and ç is the coefficient of viscosity of the fluid medium. (a) Estimate the terminal speed of a spherical pollution particle ...
September 29, 2010

college
Physical science
September 19, 2010

college
A car accelerates at a rate of 0.6 m/s2. How long does it take for this car to go from a speed of 55 mi/h to 60 mi/h?
September 19, 2010

college
A car accelerates at a rate of 0.6 m/s2. How long does it take for this car to from a speed of 55 mi/h to 60 mi/h?
September 19, 2010

English
But this is what authentic means? based on fact (cultural accuracy) reproducing essential features of an original (cultural accuracy) true to the creator's own cultural personality, spirit, or character (cultural immersion)
September 18, 2010

English
Is the book new shoes for sylvia authentic if so why?
September 18, 2010

Ethics
What evidence do you see of an ethical breakdown in Canadian society affecting all sectors (e.g., business, education, and government)?
September 12, 2010

algebra
sqrt(36/81)=(sqrt36)/(sqrt81) =6/9 (6^2=36, 9^2=81) =2/3 (take out the common factor 3 from both the denominator and the numerator)
June 16, 2010

GR.12 DATA MANAGEMENT
I GOT IT!!!!!!! [10!/(2!2!) - (9!/2!2!)]+[(2)(10!/2!2!2!) - [(2)(9!/2!2!2!)]=1632960
June 16, 2010

GR.12 DATA MANAGEMENT
How many ways are there to arrange the word: MATHEMATICS, if the last letter can not be "H", and the first letter must be a vowel?
June 16, 2010

algebra
3m+2p=1.8 (qeuation A) 4m+6p=2.9 (equation B) "equation A" times "3": 9m+6p=5.4 (equation A') "equation A'" - "equation B": 5m=2.5 [m=0.5] substitude "m=0.5" into "equation A": 3(0.5)+2p=1.8 1.5+2p=1.8 2p=0.3...
June 16, 2010

business
You work as the manager of the second largest bank in your region of the United States. The bank's top management team has asked you to present an overview of how the current economy and financial changes have impacted your business and what changes must be made as a ...
June 6, 2010

algebra
how do you Simplify (d^3)(d^4)^5?
June 3, 2010

algebra
how do you solve this equation 3x2 + 6x + 3 = 0 ? what does x equal? and how do you factor this? 4ab + 2a + 6b + 3 Thank you SOO much for the help!
June 3, 2010

English
why dont you say: sitting and standing properly are crucial factors to maintaining a healthy back.
May 3, 2010

chemistry
A solution is made by adding 5.0 g Na2CO3 * 10H2O to enough water to make a 500 mL solution. what is the molarity. I have: M=mol solute/liter solution = (5/286)/.5 = .035M 286 is what i got for the molar mass of Na2CO3 * 10H2O Is that correct?? I think it is, but the next ...
May 3, 2010

CHEMISTRY--URGENT
oh, sorry! its 2 liters HNO3 and the answer is 11.65 so it would be: -log [(20 - 2e-8) / 4000] = 2.3 = [OH] 14 - 2.3 = 11.65 (without the rounding of the 2.3) why, though, would you subtract it from the other?
May 2, 2010

CHEMISTRY--URGENT
HNO3 with pH 3 is mixed with 2 L KOH with pH 12. assuming volumes are additive what is the pH of the final solution? I have absolutely no idea how to do this. I do know the answer, though. I have a test tomorrow and I would really appreciate it if someone could help!!!!
May 2, 2010

Medical coding Insurance Math
298
May 1, 2010

9th Grade Social Studies
Had the world gone along with Wilson’s plan to remove economic barriers between nations, what kind of place would the world be? Would it be better? Worse? How would you answer this question?
April 23, 2010

CHEMISTRY--PLEASE HELP, URGENT
A saturated solution of CaSO4(aq) is made in a beaker until there is excess calcium sulfate resting at the bottom. Then solid potassium sulfate is added. Which of the following is true? (The Ksp for potassium sulfate is larger than the Ksp for calcium sulfate) a. More calcium ...
April 12, 2010

CHEMISTRY--PLEASE HELP, URGENT
What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve in 500. mL of 0.01 M aqueous silver nitrate?
April 12, 2010

chemistry--URGENT, PLEASE HELP
What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a saturated solution in water? *For this one the formula is Ag2CrO4, which is [Ag]^2[CrO4]. I plugged x in for CrO4, so x^3 is equal to Ksp. I then got that x = 2.0e-4. However, that x is for CrO4...
April 12, 2010

Chemistry (urgent)
thank you so much!! I got a 100 on the test I was studying for!
April 12, 2010

Chemistry (urgent)
Hi, I have a few chemistry problems that I'm having trouble solving. I put my attempted solutions after the problems in *'s. There was one problem I had no idea how to solve. What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a saturated ...
April 12, 2010

math-DUE TONIGHT PLEASE HELP
The way to find the mean is by adding up all the different values and then dividing by the total number. If there are five numbers you can set up an algebraic equation like: x/5 = 61.8 then you can set up a new equation to solve for the height without the absent student: h/4...
April 12, 2010

Chemistry
Hi, I have a few chemistry problems that I'm having trouble solving. I put my attempted solutions after the problems in *'s. There was one problem I had no idea how to solve. What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a saturated ...
April 12, 2010

biology
Thank you!
April 9, 2010

biology
Which of the following statements about sexual and asexual reproduction is FALSE? a. Genetic diversity occurs in sexual reproduction. b. Asexually reproducing organisms can repair their own DNA. c. There are no special reproductive cells in asexual reproduction. d. A ...
April 9, 2010

biology
Thank you!
April 9, 2010

biology
When Darwin published his theory of evolution, he included all of the following ideas EXCEPT the idea that a. species changed slowly over time. b. some organisms become less suited to their environment then others. c. evolution occurs in spurts after major environmental ...
April 9, 2010

geography
Thank You!
April 8, 2010

geography
The factor that is forcing many South Asians to move to cities is a. religious conflict in rural areas. b. the threat of landslides in coastal areas. c. lack of arable land due to a growing population. d. dry conditions in the Indo-Gangetic Plain C?
April 8, 2010

science
Screw you SraMcGin, ciara asked for an answer not for another useless search engine that turns up useless websites
April 4, 2010

language arts
did i punctuate this sentence correctly? "They wanted to have the woman give birth to healthy babies, but they wanted to get as much work out of the woman as possible; therefore, the women were given lighter tasks."
April 4, 2010

math
int 1/ (sq rt (4sec^2 x +4)) dx trigonometric substitution expression: sq rt (x^2-a^2) substitution: x=a sec x identity: sec^2 x -1=tan^2 x
March 4, 2010

math
what is a like fraction? greatest common factor? unlike fractions?
February 28, 2010

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