Saturday
April 30, 2016

# Posts by Brittney

Total # Posts: 239

chemistry
Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you got your answer.
April 19, 2012

history
How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism
April 16, 2012

physics
A charge of 2.1 nC and a charge of 4.7 nC are separated by 57.90 cm. Find the equilibrium position for a -4.7 nC charge. ____ cm from the 2.1 nC charge. what is the answer? and how did you get it? thaanks
April 11, 2012

chemistry
will SrSO4 precipitate when .1g of Na2SO4 are added to 1L of a .01M solution of Sr
March 21, 2012

MATH FOR TEACHERS
the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an ...
March 19, 2012

math for elementary teachers
the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an ...
March 19, 2012

math for elementary teachers
thank you. helped out alot!
March 19, 2012

math for elementary teachers
Suppose that carpeting cost \$12.36 per square yard at a carpet store. what will be the cost to carpet a conference room if the rooms dimensions are 110 ft by 42 ft. (the conference room should seat 380 people using 6' diameter tables each seating 10 people.)
March 19, 2012

Chemistry
A string has a length of 84 cm. The string is stretched taut, and both ends are restricted to be nonmoving. Touching the string at which of the following points will not produce a standing wave when the string is plucked?
February 15, 2012

science
If the magnitude of the electric field in air exceeds roughly 3 X10^6 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 52 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without a spark forming (...
February 11, 2012

history
How was Fort William Henry massacre used by the British and the American colonists to justify brutality against the Indians? HELPPPP PLEASE
February 6, 2012

history
Discuss the importance of landscape in crafting battle strategy for both the French and the English. HELP PLEASE!
January 30, 2012

philosophy
what makes an idea dangerous?
January 25, 2012

When would you use a line graph to present data
January 20, 2012

Christy Burch and Myung Lim, partners, compared their current income statement with their income statement of a year ago. They noted that sales were 12.0% higher than a year ago. They also noted that the total expenses were 20.0% higher than a year ago. What type of analysis ...
January 17, 2012

Liberal Arts
Part 1: You finally made it…graduation day has arrived! Your parents are so proud that they are throwing you a HUGE party. They have rented a big tent for your graduation party just in case it rains. The inside of the tent (represented by the blue area) is set up for a ...
January 14, 2012

trigonometry
A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go ...
January 9, 2012

trigonometry
A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go ...
January 8, 2012

trig
A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go ...
January 4, 2012

english
How does the text use clothing and garments (or the lack thereof) to portray Edna’s rebellion against Victorian norms? Use examples from the book to support your answer.
January 4, 2012

introduction to floral design amd flowers
Im trying to find out if my answers to the exam is right
December 26, 2011

basics and tools of floral design
The fabric label doesn’t say if the linen was preshrunk. You test the fabric for shrinkage and determine it needs to be shrunk. How do you do this? A. Wash the material in cold water and dry on high in dryer. B. Immerse the material in hot water and drip dry. C. Wash the ...
December 13, 2011

history
Flexible
December 12, 2011

chemistry
calculate the hydronium ion concentration in an aqueous solution that contains 2.50x10^-6M in hydroxide solution
December 1, 2011

math boxes 3.3
make up a set of at least twelve numbers that hav the following landmarks maximum:8 range:6 mode:6 median:5
October 24, 2011

physics
A 30 kg child steps to a dock from a 60 kg boat,giving the boat an acceleration of 2m/s^2. Neglecting water Resistance, the acceleration experienced by the child is?
October 4, 2011

Essential Mathematics 1
September 19, 2011

Essential Mathematics 1
Yay! Thanx soooo much! <3
September 19, 2011

Essential Mathematics 1
The answer would be 7 right?
September 19, 2011

Essential Mathematics 1
September 19, 2011

Essential Mathematics 1
Nope. its 10 2/3 divided by 4
September 19, 2011

Essential Mathematics 1
10 2 2/3 / 4
September 19, 2011

PHYSICS
force = change of pressure/area = 25000 N
August 1, 2011

PHYSICS
The door and the seals on an aircraft are subject to a tremendous amount of force during flight. At an altitude of 10,000 m (about 33,000 ft), the air pressure outside the airplane is only 2.7 x 104 N/m2, while the inside is still at normal atmospheric pressure, due to ...
August 1, 2011

Chemistry
A 110.-g sample of copper (specific heat capacity = 0.20 J/°C · g) is heated to 82.4°C and then placed in a container of water at 22.3°C. The final temperature of the water and copper is 23.5°C. What is the mass of the water in the container, assuming ...
July 11, 2011

Chemistry
In a coffee-cup calorimeter, 1.70 g of NH4NO3 is mixed with 76.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.71°C. Assuming the solution has a heat capacity of 4.18 J/°C &...
July 11, 2011

calculus 2
Six and one-half foot-pounds of work is required to compress a spring 3 inches from its natural length. Find the work required to compress the spring an additional one-half inch.
May 31, 2011

I need help finding the asymptotes, and domain of these two graphs.. 1) 1/x^2 Vertical Asym.:? Domain:? Horizontal asym.: y=0 2) x^2/1 Vertical Asym.:? Domain:? Horizontal asym.: none THANKS!
May 22, 2011

chemistry
i do not understand how to do these and i have a question on my test tomorrow on this stuff can someone explain to me how to do this? for each of the following molecules draw the lewis structure, determine the shape, determine the polarity, and determine the kinds of ...
May 18, 2011

science
the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.
May 18, 2011

chemistry
the human body obtains 2000 kj from a candy bar. if this energy were used to vaporize was at 100 degrees celcius, how much water in liters could be vaporized? ??(assume that the density of water is 1.0g/ml)
May 18, 2011

College Algebra
Determine whether x+6 is a factor of x^3+4x^2-27x-90
May 2, 2011

Algebra
Thanks Damon!!!
April 30, 2011

Algebra
ok did i do this right? evaluate the expression log(base4)(16)(4) log(4) 16 + log(4) 4 ? can you do that?
April 30, 2011

Algebra
Ok well bobpursley first of all your a genius ;) second of all im a newbie at this logorithm stuff. thank you for helping me!
April 30, 2011

Algebra
Expand the expression of log5x^(1/3)y^6 5 is the base of the log. this is pretty tricky stuff and im not sure how to attempt it..
April 30, 2011

Algebra
Solve the equation and check for extraneous solutions. 10^((x^2)+1)=100,000 How do i handle this when the exponents have exponents?
April 30, 2011

Algebra
Find a power function of the form y=ax^b whose graph passes throught the points (2, 5) and (8, 12). How do i solve this??
April 30, 2011

Physics
NVM I got it!!
April 17, 2011

Physics
A 920 kg sports car collides into the rear end of a 2300 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.5 m before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is ...
April 17, 2011

Physics
I got that vi=10.29 then when I sub in I get that v=11.23 but this is the wrong answer. Am I doing something wrong?
April 17, 2011

Physics
Please Help!!! A 920 kg sports car collides into the rear end of a 2300 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.5 m before stopping. The police officer, knowing that the coefficient of kinetic friction between ...
April 17, 2011

Physics
Suppose the roller coaster in Fig. 6-41 (h1 = 30 m, h2 = 11 m, h3 = 20) passes point 1 with a speed of 2.10 m/s. If the average force of friction is equal to one fifth of its weight, with what speed will it reach point 2? The distance traveled is 50.0 m.
April 15, 2011

Physics
A child in a boat throws a 5.40 kg package out horizontally with a speed of 10.0 m/s, Fig. 7-31. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25.0 kg and that of the boat is 40.0 kg.
April 14, 2011

Chemistry
51grams/132.14grams=.386moles
April 14, 2011

english
I need help on writing an essay on how entrepreneurship affects me
April 7, 2011

alg I
3/5. 5/5 - 2/5 = 3/5 chance of pulling out a green chip.
March 20, 2011

Physics
Dr. Miller pulled a wooden crate at a constant accelerationof 1.23 meters per second per second with a forceof 752 newtons at an angle of 22 degrees above the horizontal. The coefficient of kinetic friction between the crate and the floor was 0.347. Find the mass of the crate.
March 20, 2011

Biology
How does the structure of macromolecules such as proteins act as an index of relatedness between species?
March 19, 2011

math
if sam earned \$4,000 and gave 1/5 wawy and invested 1/2 of the remaining amount how much did he have left?
March 15, 2011

math
joe borrows \$4,000, the loan is for 18 months at 5% interest, whats the total amount due on the loan?
March 8, 2011

Chemistry II
Why is YBa2Cu3O7 a super conductor? Explain Chemistry and Structural bases.
February 16, 2011

Chemistry
Show, with equations, why the solution from which BaSo4 is precipitated cannot be allowed to be more then 0.01-0.05M in HCl.
February 16, 2011

chemistry
How many monosaccharides most likely make up this molecule: C 10H20 O10
February 15, 2011

physics
As part of a training program, an athlete runs while holding 8.00 weights in each hand. As he runs, the weights swing through a 30.0 arc in . His hands are 72 from his shoulder joint, and they are light enough that we can neglect their weight compared with that of the 8.00 ...
February 6, 2011

Math
Alex has 7 dimes and 3 nickels.What fraction of the coins are dimes?
January 25, 2011

algebra
Suppose that Maria has 140 coins consisting of pennies, nickels, and dimes. The number of nickels she has is 9 less than twice the number of pennies; the number of dimes she has is 19 less than three times the number of pennies. How many coins of each kind does she have?
January 17, 2011

College Algebra
The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 44 years.
November 17, 2010

college chem
Write a chemical equation to express the fact that, at 0 °C, ice melts by absorbing 334 J of heat per gram of ice.
November 10, 2010

CHEMISTRY
A single drop of water is injected into a balloon at 25C that contains ammonia, at 1 atm. What will happen to the V of the balloon?Assume Henry's constant is ~0.02 atm/M
November 9, 2010

physics
suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 200N push? explain b. does the friction force make up the reaction force to your push?
November 6, 2010

chemistry
Exactly 10mL of water at 25 degrees C was added to a hot iron skillet. all of the water was converted into steam at 100 degrees C. If the mass of the pan was 1.20 kg and the molar heat capacity of iron is 25.19 L/mol*C, what was the temp change of the skillet?
October 26, 2010

chemistry
During a strenuous workout, a student generates 2000 kJ of heat energy. What mass of water would have to evaporate from the student's skin to dissipate this much heat?
October 26, 2010

algebra
How do you graph this liear inequality 2y greater than equal to 4x-6
September 26, 2010

physics
Water flows into a swimming pool at a rate of 9.59 gal/min. If the pool dimensions are 30.9 ft wide, 47.6 ft long and 13 ft deep, how long does it take to fill the pool? (1 gallon = 231 cubic inches). Answer in units of minutes.
September 15, 2010

Chemistry
Thank you so much DrBob222
August 25, 2010

Chemistry
Please check this over and see of they are right...if they are not can you please tell the the right answer and explain how you got it. I think I am getting myself confused. Thank you. Write the neutralization reaction for each of the following. Balance the equations. a. HI(aq...
August 25, 2010

algebra
Select the ordered pair from the choices below that is a solution to the following system of equations: 4y = x - 13 2x + 16y = 20
August 24, 2010

Chemistry
A balloon is filled to a volume of 1.0 102 mL at a temperature of 38.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 multiplied by 102 K. What is the final volume of the balloon?
June 11, 2010

science
whatis the mass of a electromanetic roller coaster?the weight?
May 25, 2010

college
Assume that the life expectancy of U.S. males is normally distributed with a mean of 80 years and a standard deviation of 4 years. What is the probability that a randomly selected male will live more than 85 years?
April 29, 2010

math
Argus company makes three products: A, B, and C. Each unit of A costs \$4, each unit of B costs \$2, and each unit of C costs \$1 to produce. Argus must produce at least 20 As, 30 Bs, and 40 Cs combined. Minimize Argus's costs
April 20, 2010

physcis
a 16990kg airplane lands with a speed of 91m/s on a stationary aircraft carrier deck that is 115m. find workk done by nonconservative forces in stopping the plan.
March 26, 2010

i need help with nt and ftthn
March 22, 2010

economics
If businesses believe consumption will increase six months from now, everything else held constant, and they begin to increase investment, what do you predict will happen to aggregate demand?
March 4, 2010

who was the first artist in the world
January 19, 2010

spanish
how do you conjugate the verb preocuparse in the present tense in all forms??? Please if you know know how to do it correctly tht wld greatly appriciated!!
January 13, 2010

4y-9=15
December 23, 2009

The market’s required return on Gitche Gumee Oil Company stock is currently 13.8 percent. If the expected return on the market portfolio is 12.6 percent and the risk-free rate is 3.5 percent, what is the beta of Gitche Gumee stock?
December 12, 2009

I am reading a book called To kill a mocking bird. and had a couple questions. . . -what is the dare with which dill challenges Jem?
December 11, 2009

language
its on my homework so i don't know but thanks for the help
November 23, 2009

language
how would you abbreviate Jay Paul?
November 23, 2009

math
3/5 divided by 6/7
November 19, 2009

antonyms
old/young..... i need answer for nt,ftthn,ststnd .... missing the vowels..i hate it
November 18, 2009

ethics 125
Amanda she is not refusing the question because she does not understand it, or because she is just refusing. She is saying this answer is unfair and if she was that student she would refuse to answer the question because she believes is biased and kind of sounds like it is ...
September 24, 2009

algebra
write the following where possible as a single number in index form: 2^3x2^4
September 9, 2009

Critical Thinking
o In the future, how will thinking critically influence the ways that you: Read? Write? Process information?
April 20, 2009

Psychology
Summarize the effects of one type of sexual dysfunction that can affect both men and women. What are some factors that may cause this type of dysfunction? What treatments may help individuals who experience this type of dysfunction
April 16, 2009

1. Pages:
2. <<Prev
3. 1
4. 2
5. 3
6. Next>>