Questions Asked on
February 29, 2008

physics
In a certain region of space the electric potential is V= 5x3x^2y+2yz^2. Find the expressions for the x,y,z compenents of the electric field in this region. What is the magnitude of the field at the point P, which has coordinates 1,0,2)m? I don't know
asked by Jessica 
french
what is the plural of la salle de bains? Deux salles de bains?
asked by anonymous 
statistics
Suppose that a researcher normally uses an alpha level of .01 for hypothesis test, but this time uses an alpha level of .05. What does this change in the alpha level do to the amount of power? What does it do to the risk of a Type I error?
asked by Lily 
Physics
A daredevil plans to bungee jump from a balloon 64.0 m above a carnival midway. He will use a uniform elastic cord, tied to a harness around his body, to stop his fall at a point 10.0 m above the ground. Model his body as a particle and the cord as having
asked by Nancy 
managerial economics
At a recent board meeting, the president and CEO got into a heated argument about whether to shut down the firm's plant in Miami. The Miami plant currently loses $60,000 monthly. The president of the firm argued that the Miami plant should continue to
asked by jean 
statistics
The value of the zscore that is obtained for a hypothesis test is influenced by several factors. Some factors influence the size of the numerator of the zscore and other factors influence the size of the standard error in the denominator. For each of the
asked by Tyler 
microeconomics
Jason wants to hire Maria to tutor him in economics. Jason is willing to pay $30 for the first hour of tutoring, $25 for the second, $20 for the third, $15 for the fourth, and $10 for the fifth. Maria has an opportunity cost per hour of $6 for the first,
asked by janet 
Math (Geometry)
"Target Games: Darts are thrown at each of the boards shown below. A dart hits the board at a random point. Judging by appearances, find the probability that it will land in the shaded region." This figure is a diamond (the diamond is not shaded) and it
asked by Robert 
Algebra
A carpenter is building a rectangular room with a fixed perimeter of 112 ft. What dimensions would yield the maximum area? What is the maximum area?
asked by KC 
Personal Ethical Standard
You are a prison guard supervising a tier. One of the inmates comes to you and asks a favor. Because he is a troublemaker, his mail privileges have been taken away. He wants you to mail a letter for him. You figure it’s not such a big deal; besides, you
asked by Kish 
Chemistry
A second order reaction has a rate constant of 8.7x10^4/(M*s) at 30 degrees C. At 40 degrees C the rate constant is 1.8x10^3/(M*s). What are the activation energy and frequency factor for this reaction? Predict the value of the rate constant at 4 degrees
asked by Lauren 
physics
A man pulls a crate of mass 63.0 kg across a level floor. He pulls with a force of 174.0 N at an angle of 22.0° above the horizontal. When the crate is moving, the frictional force between the floor and the crate has a magnitude of 124.0 N. If the crate
asked by rory 
Math
Megan exercises every morning for 40 minutes. She does a combination of step aerobics, which burns about 11 calories per minute, and stretching, which burns about 4 calories per minute. Her goal is to burn 335 calories during her routine. Write a system of
asked by Manda 
chemistry
4. Phosphorous trichloride, PCl3, reacts with water to form phosphorous acid, H3PO4, and hydrocholoric acid: PCl3+ 3H2O> H3PO3+3HCL a. what is the limiting reactant when 10.0g of PCl3 is mixed with 12.4 g of H2O? b.what mass of HCl is formed? C. how much
asked by anon 
Chemistry
Use the equation below to answer the following questions. Al + H2SO4 ==> Al2(SO4)3 + H2 A. If 8.15 moles of aluminum are reacted, how many moles of hydrogen will be produced? B. If 44.7 g of hydrogen sulfate is reacted, what mass of aluminum sulfate is
asked by katie 
chemistry
5. DDT is an insecticide banned by the U.S Government because it is a hazard to fish, birds, and humans. 710 g of DDT is actually isolated in the reaction. the theoretical yield for this reaction was calculated to be 725 g. what is the percent yield for
asked by anon 
Physics
The frequency of a stationary siren is 1500 Hz when measured by a stationary observer. If an observer moves away from the siren at mach number .85 what is the frequency he hears? (assume room temperature so that velocity of the air is 340m/s) I know that I
asked by Andrea 
Physics
4. Why will the leaves of a red rose be warmed more than the petals when illuminated with red light? How does this relate to people in the hot desert wearing white clothes?
asked by jim 
chemistry
Match the correct mole ratio to the substances in the reactions below. carbon monoxide to iron in the reaction: Fe2O3 + CO ==> Fe + CO2 water to manganeese(II) chloride in the reaction: HCl + MnO2 ==> H2O + MnCl2 + Cl2 sodium to oxygen in the reaction: Na
asked by joshua 
chemistry
6.Answer the following questions about BaC2O4 and its hydrate: A. calculate the mass percent of carbon in the hydrated form of the solid that has the fromula BaC2O4 * 3H2O
asked by anon 
Chemistry
In an experiment 0.5300 g of ferric oxide is reacted with 0.3701 g of carbon monoxide gas according to the equation: Fe2O3 + CO ==> Fe + CO2. A. What is the limiting reactant? B. What mass of the other reactant is in exess? C. What mass of iron is
asked by Zachary 
Geometry and Measurement
I am trying to solve the length of the hypotenuse of a right triangle with sides of 6mm and 8mm
asked by Victoria 
confidentiality of health information
the constitutional basis of the right of privacy is
asked by gigi 
arithmetic
i have equal amounts of quarters,dimes nickels pennies the value can be any except what 1.23 1.68 2.46
asked by polly 
Algebra II (Matrices)
My book doesn't solve it like a linear equation, they solve it by using inverse matrices. Solve the matrix equation: 4 5m=32 1 2 n=5 A= 4 5 1 2 X= m n B= 32 5 Step 1. Find the inverse of the coefficient matrix. A^1= 1/132 5
asked by Jon 
Chemistry
With isotopes, is it fair to say that each isotope has a slightly differnent volume due to the differing numbers of neutrons in the nucleus? i.e. carbon12 is slightly smaller in volume than carbon13. If not, why?
asked by Kurst 
English
The word Dibarcle Debarcle is not in my dictionary. Am I spelling it incorectly. Thanks Mike
asked by Mike 
Physics
8. Fire engines used to be red. Yellowgreen is now the preferred color. Why the change?
asked by jim 
Math repost for Jordan
REALLY NEED HELP WITH MY HOMEWORK AND I WAS WANTING TO KNOW IF YOU GUYS HELP ME WITH IT SO PLEASE PLEASE PLEASE HELP ME WITH IT BECAUSE IT REALLY IS HARD YOU KNOW YEA OR NEA OR MAYBAY!
asked by Ms. Sue 
Art
What does this mean? I am suppose to find a piece of art that represents a humancentered view. but I don't know what human centered view means? can someone help me please so I can find a piece of art
asked by TJ 
Chemistry
The reaction 2B>C + 2D is found to be zero order when run at 990 degrees C. If it takes 3.3X110^2 s for an initial concentration of B to go from 0.50 M to .20 M what is the rate constant for the reaction? what is the half life of the reaction under
asked by Lauren 
chemistry
3. How many grams of CaCO3 are required in the preparation of exactly 73.5 g of CO2? CaCO3> CaO + CO2
asked by anon 
Macroeconomics
Can someone please help me with this? Since fall of 2004, rising oil prices have frequently ended stock market rallies and led to declines in all major stock indexes. Draw an AS/AD diagram which shows the effect on the US macroeconomy of oil at a high
asked by Macro_Econo 
ict
i need to design a luggage tag for ict homework but i don`t know what is written on the tag. i know you put your name but else is needed. thanks for your help
asked by jenna 
Business
If you were starting a new company, what would your ethical code of the company be?
asked by greatdanelola 
Math
Describe an application for the use of ratios or proportions
asked by Sherri 
Math
Please show me how to do this problem please. The ratio of 7 dimes to 3 quarters.
asked by Danielle 
math (urgent help needed)
Seeds of type A and type B are sold in a packet each must contain a)both type a and type b seeds b)at least twice the number of type b c)as there are type a seeds no more thanm 12 seeds 1)state the minimum number in each packet of type a and type b seeds.
asked by Keisha 
Physics
You're explaining to a youngster at the seashore why the water is cyan colored. The youngster points to the whitecaps of overturning waves and asks why they are white. What is your answer?
asked by brownie 
managerial economics
You own a small bank in a state that is now considering allowing interstate banking. You oppose interstae banking because it will be possible for the very large money center banks in New York, Chicago, and San Francisco to open branches in your bank's
asked by jean 
math
y(y6+y)5y(y+36)y55=100
asked by Taylor 
Algebra II
Assume that no denomenator equals 0. (7x^2+3x9)(x^2+8x3) = 7x^2+3x9+x^28x+3 = (7x^2+x^2)+(3x8x)+(9+3) = 8x^2+5x+6 = 8x^25x6(answer)
asked by Jon 
Math(factoring)
I need help with factoring trinomials completely. My teacher's example is: 2x^212x+18 2(x^26x+9) 2(x3)(x3) I need help with: 6x^226x20 I just can't get this stuff so if you can please help me I'd greatly appreciate it.
asked by Nick 
organic chemistry
Why is it necessary that absolute ethanol must be used in preparing an ester from ethanol and a carboxylic acid?
asked by PIN 
English
Can someone please edit this for me? and tell me if i did the quoates right.(meaning I properly indented and made each ones new paragraphs at the right time.) What would the novel “A Separate Peace” be life if Finny would have narrated it rather than
asked by Abby 
Calc 2
i need to take the limit as x>0 of 3x^2csc^2(x)...Is the answer 0?
asked by Jessica 
Science
I NEED Steve Turek's email for science class!! But I don't know how to get it. HELP!!
asked by Taylor 
Honors Physical Science
Did the object have a greater acceleration from 0s8s or from 9s  16s? What was the difference between the 2 accelerations? I figured out that the acceleration for 0s  8s is 3cm/s and that the acceleration from 9s  16s is 3.28cm/s but i don't know
asked by Chelsey 
math
how do I find an unknown?
asked by Mary 
Physics
A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the block is at the distance of .1m from equilibrium. Assume no friction between the block and the table. What is the period of its
asked by Andrea 
geography
How many major oceans are there, what are they and how many are located north of the equator?
asked by Julie 
acids and alkalis
what makes an acid an acid?
asked by clo 
Physics
How could you use the spotlights at a play to make the yellow clothes of the performers suddenly change to black?
asked by bob 
Physics
Why does the blood of deep sea divers look greenishblack in underwater photographs taken with natural light, but red when flashbulbs are used?
asked by bob 
french
How do you say our house has 2 bedrooms, a living room, a kitchen..... is it: Notre maison a trois piece. Il y a deux chambres, un sejour, une cuisine.... Please correct me.
asked by anonymous 
statistics
On a standard anagram task, people successfully complete an average µ=26 anagrams with a standard deviation=4. This distribution is normal. A researcher would like to demonstrate that the arousal from anxiety is distracting and will decrease task
asked by Laurie 
arithmetic
the average degree measure of the angles of a triangle is
asked by polly 
arithmetic
a triangle with a whole number sides has a perimeter 6 how many sides have the same lenght
asked by polly 
Analysis & Design
How can a project manager be sure that he or she has chosen the correct metrics to assess project performance? I need a few examples please.
asked by Patrick 
chemistry urgent!!!
2. When exactly 61.9 g of silver nitrate react with magnesium, how many grams of Ag are prepared? Balanced equation:
asked by anon 
english
Wanted to create a gracious way of living and stressed refinement and the development of courtesy?
asked by lindsey 
english
How many Puritans died during the crossing of the Atlantic?
asked by lindsey 
english
Portrays the alternation between faith and doubt?
asked by lindsey 
english
That there our veins might through Thy Person bleed/To quench those flames, that else would on us feed "What Love Is This" "The Ebb and Flow" "Meditations"
asked by lindsey 
jami
Good day! Please help me find the works of jami, a persian poet...especially with the love stories he was able to write...thanks a lot...
asked by klar maesen 
English/Lost word
Mind gone blank. for the sake of ???????????? When you are trying to keep everybody happy. Thanks Mike
asked by Mike 
Math
Find a thirddegree polynomial Q such that Q(1)=0, Q'(1)=0, Q''(1)=2, and Q'''(1)=12.
asked by Charlie 
chem
What is the sum of the coefficients (including “1”) of the following reaction? Sodium sulfate + calciumhydroxide> ???
asked by cal 
biology
I hate my teacher and she wont help me = [
asked by Danielle 
statistics
For a normal distribution, identify the zscore location that would separate the distribution into sections so that there is: a)60% in the body on the righthand side b)90% in the body on the lefthand side
asked by Anonymous 
Physics
Why do ocean waves break as they approach the shore? Is it because of the principle of superposition. Would it be described as constructive or destructive interference? I believe it's constructive interference as the two waves combine the amplitude is
asked by Andrea 
Science/Math
How do you convert 28cm/s  km/hr^2?
asked by Chelsey 
Math
Please double check me Find each rate 240 pounds of fertilzer divide by 6 lawns Answer: 40 lbs/lawns Which is the better buy: 5lb of sugar for $4.75 or 20lb of sugar for $19.92 Answer 5lb Write the following proportions If Maria hit 8 home runs in 15
asked by Sherri 
french
Combien de personnes y atil dans votre famille? How would you answer if i have 4 members (including me) in my family? is it: Il y a quatre personnes dans ma famille? And is " Ma mere s'appelle ____. Elle est....." a correct way to start?
asked by anonymous 
Physics
2. Why is red paint red
asked by jim 
Physics
6. Why do we not list black and white as colors?
asked by jim 
french
how do you say I live with my mom but with the word "chez" ? And how do you say i am renting the house i am living in? something like: "Je loue une maison." ?
asked by anonymous 
Physics
Does light travel faster through the lower atmosphere or through the upper atmosphere?
asked by brownie 
Chemistry
In an experiment 10.124 g of magnesium is reacted with 4.273 g of oxygen gas according to the equation: Mg + O2 ==> MgO. A. What is the limiting reactant? B. What mass of the other reactant is in exess? C. What mass of MgO is produced?
asked by tyler 
Math
PV/nR=T what does n=?
asked by Faith 
Math
how do you find the radius of a circle? Please help
asked by Jessica 
Latin
I have to do a presentation for Latin on Catullus 45 (a poem with Acme and Septimius). Any tips for presenting and what to say?
asked by Anonymous 
Reading
I have to write a NewsPapper on a book I read consisting on the main charter ect. and I am not that great at writing pappers.
asked by Keith 
Business law
Would you be able to check my 5 answers: 1. The continued possession by a minor of a good after reaching the age of majority will be treated as an implied ratification of the contract by which the minor acquired that good Answer True 2. If a contract is
asked by Mike 
accounting
i need help with A1 photography practice sets
asked by sunshine 
spell
what is the symnom of a
asked by james 
Chemistry
Then, do isotopes have different atomic radii? since they all have different numbers of neutrons. Even if they only differ by 10^23 m, there is still some diff right?
asked by Kurst 
accounting
I need help calculating Earnings Per Share and Diluted Earnings Per share with options
asked by Tashonna 
biochemistry
I am studying for a midterm. Do you know this answer? what reaction does LDH actually catalize and why is that reaction important?
asked by stew 
Business
imagine that you are starting your own company. what would be the ethical code of your company?
asked by greatdanelola 
chemistry
how did you find the percent yeild for the eugenol benzoate?
asked by shelly 
business management
can anyone help me understand what the purpose, advantages, disadvantages, and type of feedback provided by lineitem, performance, and program budgets?
asked by jean 
French
Is the correct way to say I like to go shopping, J'aime faire du shopping?
asked by jess 
criminal justice
Could someone give me an example of how to create an incident report about a bank holdup, using well constructed paragraphs, logical transitions, consistency, and professional tone. only two tellers were in the bank at the time of the robbery. give
asked by Tom 
business
What is the primary difference between a performance budget and a program budget? Why does a human services agency need to know this information?
asked by jean 
arithmetic
what is the difference between the area and the perimeter of a square with a sidelength 6
asked by polly 
calculus
What is an upper bound on the absolute value of the error: sum from n=1 to infinity of ((1)^(n+1))/(n*5^n)) .1826666... ?????
asked by laura