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October 20, 2014

Posts by Brittney


Total # Posts: 199

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(unit rate)
$3\4LB
March 12, 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

6th grade - English
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

4th grade
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

9th grade
4y-9=15
December 23, 2009

Business Fin
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

9th grade
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

american literature
what does her basket full of linen white mean??
January 28, 2009

Psychology
Ok, Well What I think this means is, something like this, but I am not sure: Jennifer would want to take over the counter medications to help reduce the headaches and the backaches. Also a over the counter medication to help the indigestion that has been occuring. Jennifer is ...
January 24, 2009

Psychology
Jennifer is a 29-year-old administrative assistant married to Antonio, an Italian engineer, whom Jennifer met four years earlier while on a business trip for her marketing company. The couple now lives in Nebraska, where Antonio works for the county's transportation ...
January 24, 2009

8th grade pre algebra
i am having trouble with solving inequalitys... how do you solve t+6>-3
January 19, 2009

english
what does mark twain think about slvery?
December 1, 2008

science
_______a rhythmic disturbance that carry energywithout carrying matter
November 12, 2008

British Literature
Scanning Sonnet 73- That time of year thou mayst behold When yellow leaves, or none, or few do hang Upon those boughs which shake against the cold, Bare ruined choirs where late the sweet birds sang. Im horrible at scanning. But I would love to have some pointers to make an ...
September 28, 2008

4th grade
a God given ability that in inherited rather than learned.
September 16, 2008

Algebra
thanks
July 3, 2008

Algebra
Can anyone explain this equation. Simplify by removing factors of 1. q^2-64/(q+8)^2
July 3, 2008

Algebra 1
3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct.
July 1, 2008

Algebra
there is no parentheses in the math problem
July 1, 2008

Algebra
3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct.
July 1, 2008

history
thanks for your help
May 12, 2008

history
WE have to lable characteristics of leaders. I have Adolph Hitler, Benito Musiline, and Fidel Castro. For all of them i have Intelligence, ethics, physical strength, military prowess, common sense, courage, power, confidence, and i need 4 more... can anyone think of four more ...
May 12, 2008

ChEmIsTrY
I2O5=??
May 12, 2008

math riddle ALGEBRA WITH PIZZAZZ
WHAT IS GREEN AND MAKES HOLES
April 6, 2008

math riddle ALGEBRA WITH PIZZAZZ
whom should you see at the bank if you needed to borrow money
April 6, 2008

-6(5+x)+(13x+1)
-6(5+x)+(13x+1)
April 6, 2008

unscramble
If you rearrange the letters "CARNEF", you would have the name of?
March 19, 2008

socialstudies
what are Zapatistas
March 4, 2008

math
how to do u solve this kinda equation 13=[n+3]
November 10, 2007

Math
Please help me with the below questions. Write a rational approximation, to the nearest thousandth, for each number: 1) Square root 14 2) Square root 1.4 3) Pie 4) Pie -3
September 25, 2007

Math
How would you write 0 as a fraction?
September 25, 2007

modern world history
how colonial rulers remain influential?
September 12, 2007

modern world history
what was the result of tanzania's socialism?
September 12, 2007

math
how do you find the area of a triangle using trigonomet
September 5, 2007

math
how do you label the axes of a complex plane
September 5, 2007

math
how do you find reference angles in the four quadrants
September 5, 2007

math
what is simple intrest
September 5, 2007

math
what are the effects of changing the base of an exponential function
September 5, 2007

math
how do you express the inverse of a exponential equation
September 5, 2007

math
how do you express the inverse of exponential equation
September 5, 2007

math
thanks
September 5, 2007

math
what are the general equations for the conic sections 1)parabola 2)circle 3)ellipse 4)hyperbola 5)inverse hyperbola
September 5, 2007

Math
when are triangles congruent
September 5, 2007

English
In Julius Caesar, what is there about Caesar that attracts such a strong following? First of all, be sure to carefully read the character analyses at this site: http://www.sparknotes.com/shakespeare/juliuscaesar/ Also, from history, we know that Caesar was an immensely ...
November 27, 2006

word unscramble
Solidedahnr
September 28, 2006

math
What is outliers? how do you solve this problem? please give me some answers. In statistics outliers are data points that very far from the mean. There are some rules of thumb for determining them, but I don't recall them right off hand and don't want to reach for the ...
September 6, 2006

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