Questions Asked on
February 27, 2008

physics
A tetherball leans against the smooth, frictionless post to which it is attached.The string is attached to the ball such that a line along the string passes through the center of the ball. The string is 1.20m long and the ball has a radius of 0.120mwith

speaker vs. poet
What the importance of knowing the difference between the speaker and the writer in a poem?

PHYSICS
Two planes fly from toronto to philadelphia. Plane a flies via pittsburgh whereas passenger on plane B have a direct flight. Pittsburgh is 350km due south of Toronto and 390km due west of Philadelphia. The airspeed of both planes is 400km/h and a steady

bio
In summer squash, white fruit color is dominant. Yellow is recessive. A squash plant that is homozygous yellow one. Predict the appearance of: (a) the F1 generation, (b) the F2, and (C) the offspring of a cross between an F1 individual and homozygous white

Physical Science
A 0.6g peanut is burned beneath 50 g of water, which increases in temperature from 22degreesC to 50 degreesc. What is the exact food value of the peanut? (Assuming a 40% efficiency)

Chemistry
In the reaction PCl3 + Cl2 > PCl5. If the rate doesn't increase when the concentration of PCl3 is doubled and the rate increases by a factor of four when the concentration of Cl2 is doubled, how would I write the rate law for the reaction?

writeateacher help> english
Maximizing the notion of the presidency, political scientist Richard Neustadt argued that presidential power lies not in the office's legal authority, but rather in the personal and strategic skill of individual presidents (p.2). Neustadt was a professor

This is grade 12 biology
What is the effect of enzyme concentration on enzyme activity? Explain how much enzyme activity changes as enzyme concentration decreases, and discuss why this occurs (on a molecular level). Is this right (and can you add more): As enzyme concentration

biology
In DNA, I know that hydrogen bond connects the nucleotides of each strand, but what type of bond holds the two strands together? is it covalent?

english
please help revise In the research analysis paper I will write about black women and their oppression. I will focus on how black women have overcome oppression and look at women in power such as Oprah, Condalisa Rice, and other. The body of the paper will

Understanding Business
What does this case teach you about the need for constant change in marketing?

English
I want to know the correct capitalization for black and white, referring to people.. In otherwords, if I say, "He is Black and she is a white woman," is that capitalization correct? Whites and Blacks are the same except for different skin color. If you

english
Please help me to correct my grammar. Thanks Exercise is bodily activity that helps for the development and maintenance of physical fitness and overall health. It strengthens musculoskeletal and cardiovascular system; even the socipsychological aspects of

Biology
Which plant cells lack a nucleus? A) sieve cells B) xylem C) companion cells D) both companion and parenchyma cells E) both xylem and sievetube cells Why is the answer E?

chem
The accepted value for the universal gas constant is 0.0821 L atm/mol K. Wat would it be if the pressure was measured in torr and the volume in milliliters?

chemistry
I am confused on how to do the last question. Calculate molarity of HCl from the volumes of acid and base at the equivalence point and the molarity of NaOH from the titration curve. (M of Acid)x(v of acid)= (m of base)x(v of added base) M1= 0.50M of NaOH x

managerial economics
TotsRUs operates the only daycare center in an exclusive neighborhood just outside of Washington, D.C. TotsRuS is making substantial economic profit, but the owners know that new daycare centers will soon learn of this highly profitable market and

ap chemistry
Some reactions that are predicted by their sign deltaG to be spontaneous at room temperature do not proceed at a measurable rate at room temperature. A suitable catalyst increases the rate of such a reaction. What effect does the catalyst have on deltaG

physics
In a rescue, the 64.0 kg police officer is suspended by two cables,the cable on the left made a 35 degree angle, the rope on the right made a 48 degree angle. What is the tension in the left cable? Find the tension in the right cable.

biology urgent...highly confused
How does pH affect the activity of catalase? Consider both high and low pH, and explain your observations by discussing the effect of pH on protein structure. I cannot find anywhere in my notes, or text book, or even on the internet how pH affects

englishothello
It is quoted in Augustine's confessions, "the letter killeth, but the spirit giveth life." if this is so, then I believe Ambrose is telling Augustine the the letter, or the law, or exact words in the bible aren't meant to be taken literally, but

English Grammar
1. Type Jennifer on Google, and you can find a lot of free videos of her. 2. Type Jennifer on Google, and you can find a lot of free videos of hers. 3. Type Jennifer in the address box on Google, and you can find a lot of free videos of her. 4. Type

Math
This question makes reference to an orthonormal basis (i,j), and an origin O. 1. Consider the triangle ABC, with vertices A(0,2), B(9,1), C(1,11). Find: a) a cartesian equation of the altitude from C; b) a cartesian equation of the circle which has BC as

arithmetic
Word Problem: A hospital needs to figure the annual budget for an 11 bed facility based on 90% occupancy using a 4 day length of stay. 1st day = $625.00, 2nd day  $315.00, 3rd day = $315.00 and 4th day = $220.00. How much money can they expect to make for

Chem
Consider a salt of the composition, A2B3. For this salt, pKsp=82.55. What is the logarithm of the molar concentrtion of this salt? I'm really at a loss of where to begin. We didn't have any examples like this in class. Thanks!

algebra
An elevator when full holds 20 kids or 15 adults. If 12 kids are on the elevator how many adults can still get on. I need to use an algebraic equation/expression to solve this word problem..I need step by step solutions to explain it...Thank you...

General Chemistry
Vinegar is a 5.0% solution by weight of acetic acid in water. Given that the pH for vinegar is 2.41 and that Ka= 1.8E5 and the density s 1.00g/mL, what is the percent dissociation of acetic acid in vinegar? I know the % dissociation equals the amount

calculus
test the series for convergence or divergence using the alternating series test the sum from n=1 to infinity of (1)^n/(3n+1) I said it converges, is this true?

calculus
test the series for convergence or divergence. the sum from n=1 to infinity of ((1)^n*e^n)/(n^3) I said it converges because the derivative of (1/n^3) is decreasing is this true?

Chem 2
1.057 grams of a substance with a molar mass of 385.336 g/mol are dissolved in 249.92. Ther temperature for the system changes from 83.83 to 52.38 degrees C during the mixing. What is the DH(heat of solution) for this process in kJ/mol. Assume that th

Labs: Biology 12
Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab

Mathematics
(2x)^2(3x)^3=3.548E82 How do I even do this type of math problem am just totally lost here????

Science/ math
A student measures the mass of 8o ml of liquid in a Graduated cylinder. The cylinder alone has a mass of 50.5 g. The cylinder plus the liquid has a Mass of 70.5 g. What is the density of the liquid?

Chem
What is the pH of the resulting solution if 30.00 mL of 0.100M acetic acid is added to 10.00mL of 0.100 M NaOH? For acetic acid, Ka=0.000018. I know that NaOH is a strong base and acetic acid is a weak acid. What is the equation: C6H5COOH+NaOH C6H5COOH

chemistry
Which of these ions may be precipitated as sulfides? Assume neutral aqueous solution, pH=7. Silver (I) ion Sodium ion Calcium ion Lead (II) ion Manganese (II) ion Ammonium ion I think the silver I ion, lead II ion, and manganese ion may be precipitated as

English
Picking out main sentences from paragraphs in a text, is there something to help spotting the best sentence (in any text)???

math
Hi, I had a question about exponential functions. If f(x)=ab to the x power, were a does not equal zero, b is greater than 0 and b does not equal one. Therefore if b=1/2, then the graph of the function never crosses the yaxis. What is the answer to this

BioChemistry
What and where is the equivalence point? Is it in the beginning of the experiment or at the reaction point?

algebra 1
Got a test tomorrow... Say you have a system of equations (linear), that you can solve using substitution, graphing, or elimination. Without solving the equations, can you tell if there is one solution, many solutions, or no solution?

PLEASE RESPOND!!
Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab

algebra
could you please tell me if this is a polynomial function.... x^2 square root of 2 +x5

english
How can I word these sentences better? 1)Regardless of how misery changes a person, everyone always wants to get rid of it. 2)The characters of the novel demonstrate how misery drives people to do things they would not normally do. 3)While standing near

math
I am having trouble solving this problem. In 1994, the population of the Las Vegas metropolitan area was about 1,076,000 with an average annual growth rate of 6.5%. Assume this growth rate continues into the future. I have to estimate the population of Las

spanish
Can someone please check to make sure i used the imperfect and pretirite tenses at the right times and please check my grammar. En esta foto, mi familia y you estabamos en Atlantis, Paradise Island Bahamas. Yo era once años y en la nota de sexto. Todos

managerial economics
The New York City Parks Department doubled the annual fee for the hotdog pushcart that had the exclusive license for the spot just south of the Metropolitan Museum of Art to $288,000. Why would anyone pay almost $300,00 for a pushcart license? Who is

english
please help revise In the research analysis paper I will write about black women and their oppression. I will focus on how black women have overcome oppression and look at women in power such as Oprah, Condalisa Rice, and other. The body of the paper will

math
test the series for convergence or divergence using the alternating series test the sum from n=1 to infinity of (1)^n/(3n+1) I said it converges, is this true?

math
test the series for convergence or divergence. the sum from n=1 to infinity of ((1)^n*e^n)/(n^3) I said it converges because the derivative of (1/n^3) is decreasing

english?
Im I stating a clear purpose for my paper? In this study, I will write about black women’s oppression. I will focus on sexism and racism and how it causes black women’s daily oppression in addition to how it continues to exist through education,

Algebra
All the even numbers from 2 to 98 inclusive, except those ending in 0, are multiplied together. What is the rightmost digit, that is, the units digit of the product?

algebra
The positive integer 4 can be represented as a sum of 1's or 2's in five ways, such as 1 + 2 + 1 and 1 + 1 + 2. Show all the ways that the positive integer 5 can be represented as a sum of 1's or 2's.

Algebra
What is the sum of all two digit positive integers whose squares end with the digits 01?

Algebra
What is the sum of all possible digits that could fill in the blank in 47_021 so that the resulting five digit number is divisible by 3?

Physics
Consider a perfectly inelastic headon collision between a small car and a large truck traveling at the same speed. Which vehicle has a greater change in kinetic energy as a result of the collision? Since the vehicles stick together after the collision and

Algebra Variation Constant
What does this mean? Do I graph this or what? Find the variation constant and an equation of variation where y varies directly as x and y=12 when x=2 The variation constant =? The equation of variation is y=?

ETH 125
should united states gov't policy favor certain kinds of immigrants

Chemistry
The following equations are intepretations of the evidence from the reactions of four metals with various cation solutions. Make a table of halfreactions and arrange the four metallic ions and the hydrogen ions in order of their decreasing tendency to

Chemistry
Predict the most likely redox reaction and use the spontaneity rule to predict whether the reaction will occur spontaneously. 1. An aqueous solution of potassium permanganate was reacted with an acidic solution of sodium bromide and an orangeborn

social studies
The mediterranean Sea is almost completely enclosed by land. What three continents boarder it?

algebra 1
MArta has $6000 to invest. She puts x dollars of this money into a savings account that earns 2% interest per year. With the rest, she buys a certificate of deposit that earns 4% per year. i need 2 different equations. [using a=prt and/or a=p(1+r/n)^nt]

history
where do bills or ideas for laws come from??? what bills or ideas might each group of people suggest?

englishothello
I have to compare Iago in othello to Ambrose's message in St. Augustine's Confessions. Ambrose's message is to not take the Bible literally, but figuratively so that he can understand the deeper meaning. I must say how Iago's lesson is the opposite of what

Biology for school
What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain on a molecular basis. I am not sure what the question wants from me. Would this be right, and is there anything

algebra..urgent!!!!
MArta has $6000 to invest. She puts x dollars of this money into a savings account that earns 2% interest per year. With the rest, she buys a certificate of deposit that earns 4% per year. i need 2 different equations. [using a=prt and/or a=p(1+r/n)^nt]

music
I cant seem to think of any words to complete this sentence: The woodwind section is like because

Physical science
After a car is driven for some distance, why does the air pressure in the tires increase?

science (chem)
I have a question. I'm forming Isopentyl acetate by the esterfication of acetic acid with isopentyl alcohol. The rxn is shifted so that the ester is produced by using excess acetic acid. In isolating the ester, the excess acetic acid and and isopentyl

repost bio
What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain on a molecular basis. I am not sure what the question wants from me. Would this be right, and is there anything

American History
How did isolationist beliefs affect immigration policy during 1920s? Is nativism similar to isolationism? I only know how the nativist sentiment affected the immigration policy, but I don't know about the isolationist beliefs. Please explain. THANKS A LOT!

chemistry
Gaseous arsine reacts according to the balanced equation. If a total of 3663 KJ of heat is produced in the reaction as written, how many grams of AsH3 are consumed? (Enthalpy= 1867.2) 2 AsH3(g) + 3 O2(g) > As2O3(s) + 3 H2O(l)

modern algebra
I have two questions... I would really appreciate some help... 1) Suppose phi is a homomorphism from G to G' and that G' has an element of order 8. Prove that G has an element of order 8. (I can show that G has an element g^8 that maps to the identity in

Ap Chem,
1) What kind of chemistry makes it possible for DNA of materials being tested to lodge at only one kind of probe molecule? 2) What is normally the connection between damage to a cell and the p53 protein? 3) From the perspectives of the society as a whole,

physics
In Figure block 1 of mass m1 slides from rest along a frictionless ramp from height h = 3.10 m and then collides with stationary block 2, which has mass m2 = 5.00m1. After the collision, block 2 slides into a region where the coefficient of kinetic

Social Studies
What are the immigration and emigration issues in Ireland and what are some population issues that Ireland is dealing with?

science
how many bones are there in the human skeletal

english
I'm trying to study satire. I found this poem online Now if you take an orange And hold it in your hand, It isn't really there at all  Or so I understand. A sensationalist will prove to you That though you know it's there, It's only just sensations Of

Algebra
How can you determine if two lines are perpendicular?

Algebra
What values for x, if any, must be excluded in each of the following algebraic fractions? 1.17/x 2.3/(x2)= 3.3x/((x+1)(x2))= 4.(2x1)/(3x^2+x2)

Algebra Check
Rewrite the following expression with positive exponents (16xy)^5/6 = 1/(16xy)^5/6?

Algebra
Multiply (a+1/2)(a+1/4) 1.25a? or 1 1/4a ?

science
what do you get from cinnabar

english
how would you approach creating a negative message for a superior versus creating a message for a colleague

Alegebra
w=Cr^2 solve for r

math
Hi, me and my friend think two completely different answers to the same question the question is 4pq if p = 3 and q = 6 the 2 different answers are a) 4x3x6 b) 1224 Please can you tell us which is right or are we both wrong? If so what is the answer and

math
first was w=Cr^2 solve for r I came up with r=sqrt of C/w Now I have imputed numbers that were provided to come up with the equation 3,963=sqrt c/100 I squared both sides to come up with 15,705,369=c/100 Now I am stuck. Trying to solve for C. Am I on the

Algebra
Solve the matrix equation: 4 5m=32 1 2n=5 I don't get it

english help revise
The underlying cause of the northern Uganda rebellion is ethnic conflict. Comparable to what we have recently learned many ethnic groups like the Acholi frequently dislike each other due to one ethnic group’s economic exploitation or political domination

chem
what are Gregor Mednel's two greatest impacts on modern times.

calculus
what is an upper bound on the absolute value of the error? the abs value of (the sum from n=1 to infinity of ((1)^(n+1))/(n*5^n) where it is .1826666....)

Chem
Calculate the mass of baking soda, NaHCO3, needed to neutralize 3.0mL of 3.0 M hydrochloric acid.

chemistry
say A > B + 5kJ would reactants have more enthalpy or products have more enthalpy? I think first, the delta H would be negative. So H final must be less than H initial. So reactants have more enthalpy?

nutrition
How are foodborne illnesses contracted? What are some ways you can protect yourself and others from foodborne illnesses at home? Give three examples to support your answer.

Community Corrections
Explain the Correctional Officer subculture. How does this subculture create ethical issues for correctional officers?

Chem
Which of these ions may be precipitated as sulfides? Assume neutral aqueous solution, pH=7. Silver (I) ion Sodium ion Calcium ion Lead (II) ion Manganese (II) ion Ammonium ion I think the silver I ion, lead II ion, and manganese ion may be precipitated as

german
what is good morning in german?

chemistry
If the molecular speed of a gas increases, its rate of diffusion will__________.

math
I was wondering if this statement is true or false. The statement is 0 times h(4)= h(0 times 4). Is this true or false and why?

molarity
what mass of sodium hydroxide, NaOH, must be dissolved to make 460 ml of a 1.10 M solution

english
could you possibly give me a site where i could find the story: silent snow secret snow by conrad aiken?

eth 125
bilingualism in education, cons and pros of, disadvantages and advantages

Latin
What does videtisne mean?

global history
why did austria declare war on serbia?

math
what is an upper bound on the absolute value of the error? the abs value of (the sum from n=1 to infinity of ((1)^(n+1))/(n*5^n) where it is .1826666....)

writing/reading
How do u write a good extended response ??

bio
I know that hydrogen bond connects the nucleotides of each strand, but what type of bond holds the two strands together? is it covalent?

Algebra
If a is 50% larger than c and b is 25% larger than c, then a is what percent larger than b?

spanish
was wondering if someone could look over these sentences and see if they make sense. en el verano, nosotros fuimos en el excusion. (is there another word for road trip?" despues, cargamos la carro y salimos. ( after we packed the car and left.) gastamos

trigonometry
Hello! I was wondering if someone could check my answer and tell me if I'm on the right track: "Find a model for simple harmonic motion satisfying the specified conditions" Displacement(t=0), 2ft Amplitude, 2ft Period, 10 sec This is what I got: y=2cos

math
is 1 + x + (x1)^2 + (x2)^3 + (x3)^4+... a power series?

History
what made the Works Progress Administration so important?

Accounting
I thought a post closing trial balance is when you list all your accounts and their credit/debit amount and then debits should match credits. When I do this they do not match. Is there something Im doing wrong? Cash in bank 4000 Accts Reciev 500 Accts

Physical Science
On which temerature scale does the average kenetic energy of molecules double when the temperature double?

math
if u have 5(square root)3^2 what would be your answer/steps to finding it?

literature
My assignment is to find two stories from the 19th century. But the stories have to be good enough to into a musical that my class will actually perform for my highschool. I was looking for some of the darker stories, but I don’t know were to find them.

English
When creating an argument, regardless of type, you must write it to ensure it not just read, but also what? A. Understood B. Utilized C. Heard D. None of the above

Cultural Diversity
What other measurements sociologists use to calcalculate prejudice?

Math: Cross Product
Prove that  a x b  = (sqrt) [(a (dot) b)(b (dot) b)  (a (dot) b)^2]

physical science test tommorrow
what is the difference between constant acceleration and uniform acceleration

literature
My assignment is to find two stories from the 19th century. But the stories have to be written by 2 diferent authors. I was thinking of something dark or horror, but not poe.

English II
Read The Following Anecedote And Give Examples From Modern Life Illustrating How A Catastrophe Occured Because Of Some Insignificant Event. Napoleon's army was defeated at Waterloo because one of his strongest units of cavalry was misdirected by a peasant

English expression
Have you ever heard of epals? I often email my epals these days.  In the sentences above, what is the meaning of 'epal'?

English expression
A: I haven't seen you in ages. How have you been? B: I'm fine.  Is this dialogue correct? Do we have to answer,'I'm fine.' or 'I've been fine.'? Can we say 'in an age' instead of 'in ages'?

English expression
1. It's a kind of shopping by computer. 2. It's a kind of shopping on the computer. 3. It's a kind of shopping online. 4. It's a kind of online shopping?  Are they all the same? Can we use 'on the computer' instead of 'by

math
(11) (1/8) find the product

Uh Biology :)
Ectothermic organisms have body temperatures that vary with the temperature of their surroundings. Discuss the effect this variation might have on the functioning enzymes in these organisms. Suggest ways ectothermic organisms might cope with this problem.