Wednesday
August 27, 2014

Posts by Belinda


Total # Posts: 82

physics
work done by man: 4h*1/5w=work work done on crate: h*w=work w&h = 1 man = 4*.2 = 0.8 crate = 1*1 = 1 So is it D?
July 5, 2014

physics
A worker in a warehouse uses a rope passing through some pulleys to lift a heavy crate. The worker exerts a force five times less than the weight of the crate but has to move the rope four times as far as the crate moves. This situation... A) can happen because the extra ...
July 5, 2014

Statistics
What percentage of cats sleep less than 10 hours? What percentage sleep more than 20 hours
April 27, 2014

Statistics
the average numbers of hours a cat sleep is approximately normally distributed with a mean of 15 hours and a standard deviation of 1.7 hours; what percentage of cats sleep between 13 and 18 hours
April 27, 2014

accounting
Cartwright inc has $1,000,000 of 10% bonds outstanding on December 31, 20x8. On January 1, 20x9 adams corp and 80% owned subsidiary of Cartright, inc purchases a $250,000 part of cartwrights inc's outstanding bonds in the market for $245,000. Interest accured by 12/31/20x9...
April 21, 2014

financial analysis
A zero coupon bond with a par value of 1,000 has 15 years to maturity. If the YTM is 6.2% what is the current price of this bond?
April 18, 2014

Business
The free shipping and manufacturer’s warranty that comes with a coffee maker represent which category of purchase criteria among the Four Utilities of Customer Value? Form Ease of possession Time Place
April 7, 2014

Business
9. Which of the following trends is causing marketers to place more emphasis on competitive differentiation? (C) A. Investment costs that are accrued during the Introduction phase. B.Increasing speed with which products are brought to market. C.Subsequent waves of buyers ...
June 9, 2013

Chemistry College
If KHP sample 1 requires 22.47 mL of aqueous NaOH, how many milliliters of NaOH should be needed for samples 2 and 3?
April 18, 2013

math
number sense does the expression d-12 have a greater value when d=42 or when d=46
September 26, 2012

math
number sense does the expression d-12 have a greater value when d=42 or when d=46
September 26, 2012

English 125 Introduction to literature
What does the term literature mean to you? What makes something literary in your own mind? If literature means different things to different people, who defines what is and what is not literature? 2.What kind of reading engages/interests you? What about that writing draws you ...
June 6, 2012

math
2150
January 26, 2012

Cubic Equations
Thanks so much :D
January 8, 2012

Cubic Equations
I have three that I need help with if possible. 1. Solve 2x^3 - 3x^2 = 6x - 9 2. Find all real and imaginary roots of the polynomial equation 3x^4 - x^3 + 4x^2 - 2x - 4=0 3. Find a cubic equation with integral coefficients and roots 3i and -5.
January 8, 2012

Physics
If a 1.00 kg body has an acceleration of 3.69 m/s2 at 75° to the positive direction of the x axis, then what are (a) the x component and (b) the y component of the net force on it, and (c) what is the net force in unit-vector notation? If f = ma can f = 2, am I on the ...
October 22, 2011

Physics - acceleration..need to find velocity
I am given two points on an acceleration vs time graph: (-2,13),(4,0). When t = -2s, v = 10 m\s. What velocity at t = 6s? I believe acceleration average is (-13/6), but how do I solve the rest get the correct answer, which is 44.7 m/s? Any help or hints would be greatly ...
October 21, 2011

Physics
I am given two points on an acceleration vs time graph: (-2,13),(4,0). When t = -2s, v = 10 m\s. What velocity at t = 6s? I believe acceleration average is (-13/6), but how do I solve the rest get the correct answer, which is 44.7 m/s? Any help or hints would be greatly ...
October 20, 2011

Physics-Help please...
The graph give the acceleration a versus time t for a particle moving along an x axis. The a axis scale set by a=12 m/s^2. At t = -2s the particle's velocity is 10 m/s. What is its velocity at t = 6s. I know that I am supposed to used integrals to solve, but I can't ...
October 1, 2011

calculus
If an equation of motion of a particle is given by s(t)= Acos(ùt + ä), the particle is said to undergo simple harmonic motion. Find the velocity of the particle at time t. When is the velocity 0?
September 27, 2011

algebra
Here is my question. How do you solve th substitution method in this problem? 9x - y = 40 y = 4x
September 11, 2011

computers
can you please help me with compare and contrast Lans, Wans, Cans,Mans, Hans
May 2, 2011

history of design
discuss the whatham paper project
April 11, 2011

Statistics
If the mean of a set of data is 20.00 and 12.20 has a z-score of -1.30, then the standard deviation must be: What formula would you use to determine this?
April 7, 2011

Statistics
For a set of data with mean 12 and variance 9, approsimately 68% of the values will fall between 6 to 18. Is the true or false and how do you find the answere?
April 7, 2011

u s history
what factors led to western expansion at the the? what other factors contributed to the expansion? how has the notion of Manfiest Destiny shaped the world today?
March 7, 2011

Statistics
One of my classmates ask this question and it wasn't answered so now I am asking it and of course we are all struggling with no strong Math background Case 6.4 Maternal Serum Screening Test for Down syndrome Please keep in mind that I do not have a Math back ground so this...
February 7, 2011

chemistry
what is the molality of a 0.068M solution of ethyl alcohol in water at 25 degrees celsius. (assume the density of the solution at such a low concentration is equal to that of water at 25degrees celsius, 0.997g/ml)
February 2, 2011

chemistry
what is the molality of a 0.068M solution of ethyl alcohol in water at 25 degrees celsius. (assume the density of the solution at such a low concentration is equal to that of water at 25degrees celsius, 0.997g/ml)
February 2, 2011

English
What is the importance of feedback in communication?Explain.
November 3, 2010

math 117
Thank you for helping me with this problem. Math has always been a hard subject for me. No matter how hard I study I can not get it to stick with me. Do you have any suggestions on how I can learn this math 117? None of it makes sense to me, I just can't get it!
October 31, 2010

English
should i talk about the relevance
October 31, 2010

English
Write an essay on university education in a paragraph.
October 31, 2010

medical coding 1
If you get your answers off of this site or others like this double check your work. Just because they are on here does not always make them correct. I wanted to do a little reasearch on an assignment I had and came across this site I started double checking my answeres ...
August 4, 2010

math
factor 3m^2n + 2m
March 3, 2010

mth
you must have been reading my problem wrong though...? I'm saying 2 to the -2 power
February 24, 2010

mth
already tried that. google calc. isn't always necessarily correct...but thanks for the attempt!
February 24, 2010

mth
(2)^-2 ?
February 24, 2010

The Digestive System
Trace the path of food from ingestion to defecation and describe what happen at each stop? Also name enzymes.
December 9, 2009

Chemistry
But then copper and tin can also be used to plate iron even if they're less reactive than iron.
October 24, 2009

Chemistry
Zinc coats Iron and prevents it from rusting. However Iron cannot be used to coat zinc and prevent it from corroding.Explain this phenomenon.HELP PLEASE URGENT!!
October 24, 2009

Chemistry
The water would change to ice. This is because bond breaking energy is higher than bond making energy hence more heat would escape from the water. Therefore temperature would drop and water would change to ice and consequently increase in volume.
October 24, 2009

Chemistry
what is H2C2O4
January 26, 2009

Research Project on Computer Confidentiality
I am working on the same project and I know your frustrations. I have been to the libraries in two diffrent counties and two college book stores along with Barnes and Nobles with no luck on any refrence guides. I took the advice from the person abouve and started thinking ...
November 12, 2008

Reseach paper
I too am doing the same paper through Penn Foster. I found the information on the ama web site just dosen't seem to be enough information to make a long enough paragraph and I can not find any help at my local libraries or online. I found a good book but it is things from ...
June 21, 2008

Ethics
What forms of testing do sociologist utilize to measure prejudice?
March 28, 2008

calculus
what is the integral of (x^2-x+6)/(x^3-3x)? the process involves partial fractions, and the answer is supposed to include ln and arctan... i just dont know how to get there.
March 2, 2008

calculus
what is the integral of x^2-x+6/x^3-3x? the process involves partial fractions, and the answer is supposed to include ln and arctan... i just dont know how to get there.
March 1, 2008

math
whats the integral of e^(3sqrt(x))? i think i'm supposed to use substitution but i dont know what to substirute, i tried u= x^(1/3) but it didnt work out, please help!
March 1, 2008

math
In a large population of adults, the mean IQ is 112 with a standard deviation of 20. Suppose 200 adults are randomly selected for a market research campaign. The probability that the sample mean IQ is greater than 110 is...?
February 5, 2008

math
so my final answer would be 1/3 right? it seems too simple to be true...
February 5, 2008

math
Suppose you are going to roll a die 60 times and record the proportion of times that a 1 or 2 is showing, s. The sampling distribution of s should be centered about....?
February 5, 2008

astronomy
Why is the sky blue?
January 21, 2008

english
Born in Manila, Salonga began performing at age seven.
October 1, 2007

math
-12-(-17)/ -23-(-23)
September 8, 2007

Child safety- car seat question
To function properly,children's safety seats and restraints must: 1. be installed correctly and anchored to the vehicle. 2. face the back of the seat. 3. come with a lap belt and shoulder harness. Would number 1 be the best answer? My text says: "Safety seats and ...
April 17, 2007

Poem Help Needed
This is a poem by John Berryman that I am supposed to analyze and I am completely confused by. If anyone has any observations or ideas about the main idea of the poem, PLEASE help me out! "The Traveller" They pointed me out on the highway, and they said 'That man...
April 8, 2007

US History
Why did the National Labor Union collapse? Please don't give me links - I've looked everywhere, including Wikipedia. I just don't understand what actually caused it to collapse so I'm looking for an answer. I'm trying to connect it to the collapse of the ...
February 12, 2007

Chemistry - Rate Law
The following example is given in my textbook: If a chemical equation is: NO2 (g) + CO (g) -> NO (g) + CO2 (g) The rate law is: Rate = k[NO2]^2 Usually you put in the reactants in their own sets of brackets, so why isn't the reactant CO involved in the rate law? I get ...
January 31, 2007

AP US History
Was the War of 1812 defensive or aggressive on America's part? I feel like it was aggressive because we attacked first, but maybe it was defensive because we were defending ourselves against impressment. Someone please clarify this for me, thanks. You're right! :-) ...
January 25, 2007

AP US History
What was Thomas Jefferson's party called against Hamilton's Federalist party? Check this site for your answer. http://www.pbs.org/wgbh/amex/duel/peopleevents/pande05.html
January 25, 2007

To Jasmine20 - FOILing
Try this website to learn about FOILing better: Go to Google and type in "FOIL" Click the first option (it starts with algebra.help........) If you can't find the exact website, just look through Google to find a lesson on FOILing. I think that one should try to ...
January 24, 2007

AP US History DBQ Question
For my midterm I was given a list of DBQ topics that she will pick from to give to us. I wrote the question below and I don't have the documents yet, but I have a general outline and I'm hoping people on this site can give me opinions and some more substance to my ...
January 24, 2007

AP US History
Is a DBQ supposed to be a generic 5-paragraph essay or is it a certain length??? A DBQ is a question based upon facts presented in a document. For most purposes, it can be any length. But the generic 5-paragraph essay is a standard. Check this site for more information. http...
January 24, 2007

Math , correction
correct Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible. (2,-3) and (2,4) this is what i did for it. m= (4-(-3))/(2-2)=(7)/(0)= slope is undefined which means that the line is vertical ...
January 24, 2007

New AP Chem Question for Dr. Bob
This is a Hess' Law problem. I think I got it but I'm hoping you could check it for me: Calculate the heat of reaction for changing 1 mol of silica, SiO2, that has been extracted from sand into the pure silicon that is needed to make computer chips. Use the following ...
January 23, 2007

AP Chem - to Dr. Bob
I don't understand how to even start this problem: A mixture of H2(g), O2(g), and 2 mL of H2O is present in a 0.5 L rigid container at 25 degrees Celsius. The number of moles of H2 and the number of moles of O2 are equal. The total pressure is 1146 mmHg. Vapor pressure of ...
January 23, 2007

AP Chem - to Dr. Bob
I don't understand how to even start this problem: A mixture of H2(g), O2(g), and 2 mL of H2O is present in a 0.5 L rigid container at 25 degrees Celsius. The number of moles of H2 and the number of moles of O2 are equal. The total pressure is 1146 mmHg. Vapor pressure of ...
January 23, 2007

AP Chem
When NH3 gas is introduced at one end of a long tube while HCl gas is introduced simultaneously at the other end, a ring of white ammonium chloride is observed to form in the tube after a few minutes. This ring is closer to the HCl end of the tube than the NH3 end. Why? I am ...
January 23, 2007

AP Chem
When a gas filled balloon is cooled, it shrinks in volume; this occurs no matter what gas is originally placed in the balloon. Why? I was thinking maybe because the number of collisions are less and so the slower moving particles aren't hitting the walls and stretching the...
January 23, 2007

AP Chem
What is the STP for temperature? Is it 25 degrees Celsius? DO you go to Gateway High? me? no. why? STP is 1 atmosphere for pressure and 0 Kelvin (273o C).
January 23, 2007

Pre-Calc
Does y=1/x have an inverse? It is a one-to-one function, so it should be the inverse equation is the same??? yes, the inverse is the same. Check it with G(f(x)) So, when drawing the inverse, it is just the same graph?
January 21, 2007

Discipline
Carl is getting tired of two children in his three-year-old room having wetting accidents on the playground. The class always uses the restroom before they go outside,but two of the boys are wetting themselves at least once a week,making Carl have to send them inside for clean...
January 16, 2007

Discipline
I have a couple of questions that I need some help with. 1.Miss Wiggs is trying to read a story about elephants before her first grade class leaves that morning for a trip to the local zoo.The children have already sat through calendar and weather time,as well as a sharing ...
January 16, 2007

Discipline
Kyle, a two-and-a-half- year old, is stacking blocks in the block center. Karen is playing beside him with some large cars. As their teacher Melanie watches, Karen rolls her car into Kyle's tower causing it to fall. Kyle hits Karen causing her to cry. Kyle's behavior ...
January 16, 2007

computer
I need to do the degrees celcuis and fahrenheit abreviations on my computer document, can someone tell me what keys to use. oC & oF. Do you want to post them on this board or is this a document you are writing. If the latter, what program are you using. If microsoft Word I may...
January 11, 2007

Chemistry - Van't Hoff Factor
How does the van't hoff factor relate to freezing points? If one van't hoff factor is bigger than another, is its freezing point lower or greater? delta Tf = iKfm. So increasing i will increase delta Tf Van't Hoff factor is the concentration of particles in a ...
January 5, 2007

English
In Nathaniel Hawthorne's "Dr. Heidegger's Experiment", I was asked to figure out how Hawthorne feels about transcendentalism. We determined that Dr. Heidegger represents Ralph Waldo Emerson, a transcendentalist. However, I can't decide if Hawthorne ...
January 4, 2007

US History
How did the Kansas-Nebraska Act indirectly wreck the Compromise of 1850? This site will explain that conflict. http://www.infoplease.com/ce6/history/A0827030.html
January 2, 2007

Chemistry - solubility
Arrange the following compounds in order of increasing solubility in water: * O2 * LiCl * Br2 * CH3OH Like dissolves like; that is, polar compounds usually are soluble in water and non-polar compounds are not soluble in water. From that description, make your choices and post ...
January 2, 2007

US History
Is anyone on here in AP US History? Ask your question, state your thinking on it. Yes is the answer to your question. What were the Lincoln-Douglass debates? Check this site for information bout these debates. http://www.nps.gov/archive/liho/debates.htm
January 2, 2007

William Lloyd Garrison
How was William Lloyd Garrison a "pacifist" and also burned the Constitution, etc.? He seems pretty violent and liberal, not pacifistic, but the textbook calls him one. http://en.wikipedia.org/wiki/William_Lloyd_Garrison
January 1, 2007

Pages: 1

Search
Members