Questions Asked on
November 12, 2007

Physics
This is probably a really easy question, but I just don't know how to set it up. An object in equilibrium has three forces exerted on it. A 33 N force acts at 90 degrees from the xaxis and a 44 N force acts at 60 degrees. What are the magnitude and
asked by Corin 
Physics
A 2.1kg brass ball is transported to the Moon. a)What is the mass of the brass ball on the earth and on the moon? Wouldn't it be 2.1kg for the earth as well as for the moon? b)Determing the weight of thee brass ball on the earth. F_g=(G*m_ball*m_earth)/r^2
asked by Andrea 
Physics
Europa, a moon of Jupiter has an orbital diameter of 1.34x10^9m and a period of 3.55 days. What is the mass of Jupiter? d=1.34x10^9m T=3.55days = 30672s M=? r=71492000m rm=6.7x10^8 rtotal=7414492000m r^3/t^2=GM/4pi^2
asked by Andrea 
Managerial Economics
Economists consider which of the following costs to be irrelevant to a short run business decision? A)out of pocket B)historical cost C)opportunity cost D)replacement cost
asked by A 
Science
A student finds that it takes 0.20s for a ball to pass through phototogates placed 30 cm apart on a level ramp. The end of the ramp is 92 cm above the floor. Where should a coin be placed so tnat the ball strikes it directly on impact with the ground?
asked by leo 
APUSH
How did nostalgia for the past encourage social reform?
asked by Amanda 
Managerial Economics
Diseconomies of scale can be caused by: A)bureaucratic inefficiencies B)increasing advertising and promotional costs. C)the law of diminishing returns D)all of the above
asked by A 
Chemistry
how do you purify Biphenyl contaminated with Fluorene? what is the method and solvent?
asked by Sonam 
Statistics Help Please
How do I tell if this is a mean or a proportion 1. Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. The insurance company knows that, last year, the life expectancy of its policyholders was
asked by LT 
English
Are the "Notes on Punctuation" by Lewis Thomas actually about punctuation? We were asked to "close read" it and I'm sure the author had other messages to get out other than punctuation. I looked Lewis Thomas up on google and found that he was quite into
asked by Samantha 
Science
Hi any links or ideas? Given darwins theory of evolution, what scientific evidence best supports evolution by natural selection?
asked by Michelle 
Physics
Could someone help me with these questions. . . please 1. How does Rutherford’s model of the atom account for the back – scattering of alpha particles directed at the gold leaf 2. The higher the energy level occupied by an electron in the hydrogen
asked by Mike 
biology
should companies that market high solute beverages be able to say these drinks quench your thirst what information should consumers be given about the concentration of beverages
asked by ~JESSICA~ 
Physics
The mean radius of the Earth is R=6.38x10^6m. At what distance above the Earth's surface will the acceleration of gravity be 4.905m/s^2? F_g=(Gmme)/r^2 4.905=6.67x10^11(5.98x10^24)/r^2 The mass cancel out so that is how I got the above answer. r=9017663m
asked by Andrea 
Calculus
Minimize S=x+2y with xy=2 and both x and y > 0
asked by Britt 
chemistry
An aqueous solution of ethanol is 3.05 M in ethanol, CH3CH2OH. Calculate the mole fraction of ethanol if the density of the solution is 0.964 g mL1.
asked by mark 
Homework
We, my roomates and I, keep getting replies saying stop posting under more than one name. We are not posting under more than one name we are all different. We all live together and only have this common computer at the moment, but we are more than one
asked by Olivia 
Physics
Suppose that the force acting on a mass m is F=kx+fsin(omega)t. a.) show that x(t)= A sin omegat is a possible motion for this simple driven oscillator if A= f/km omega^2 b.) what is the amplitude when the frequency is very small? I hav no idea where to
asked by Anonymous 
Managerial Economics
When a firm increased its output by one unit, its Average Cost decreased. This implies that A)the law of diminishing returns has not yet taken effect B)MC
asked by A 
Essay
In what ways were cotton production and slavery more of a burden to the South than a benefit.
asked by Christie 
physics
a 15000N car on a hydrolyic lift rests on a cylinder with a piston of radius 0.20M,. if a connecting cylinder with a piston of 0.04M radius is driven by compressed air, what force must be applied to the smaller piston in order to lift the car? am i doing
asked by tasha 
Chem
NaOH (aq) + Zn (solid) reaction
asked by John 
Algebra
Hello all  I would like to check my work on 2 problems. Solve by factoring : x^213x= 12 x^213x+12= 12 + 12 x^213x+12= 0 (x1)(x12)= 0 x = 1 , 12 Solve using the square root property: 2x^235=15 2x^23515=0 2x^250=0 2(x5)(x+5)=0 x = 5 , 5 Not
asked by John 
World history
Is Ghana and Mali and nearby countries considered central Africa? Since today it is on a modern map..it is located northwest...but back then..was it considered central africa?
asked by anonymous 
Physics
A regulation volleyball court is L = 18.0 m long and a regulation volleyball net is d = 2.43 m high. A volleyball player strikes the ball a height h = 1.76 m directly above the back line, and the ball's initial velocity makes an angle q = 55° with respect
asked by Lindsay 
computers
which set of terms below correctly pairs a generation of computers with key innovation associated with it? a. 2nd generation/ intergrated circuits b. 3rd generation/programming languages c. 4th generation/ operating systems d. 5th generation/artificial
asked by holli 
Social Studies
Explain the significance of rivers in the life of ancient people in Mesopotamia,India and China.
asked by chanell 
Social Studies
How do you promote the contributions of Asia's early civilizations which are beneficisl to modern society?Explain.
asked by chanell 
Chemistry
A 0.00400 mole sample of 2chloro2methylpropane is added to 150Ml of water, and the mixture is stirred till the p H levels off. What is the p H of the solution?
asked by Delli 
acct. correction
can someone correct these for me thanks. for the accounting cycle. i have to place these in order. a) Posting the journal entries b) Journalizing and posting adjusting entries c) Preparing the adjusted trial balances d) Journalizing and posting closing
asked by student acc 
Chemistry
Hi; I'm just wondering, I need to write the dissocation equation for NH3 so that I can get Kb, and I just want to make sure that I am on the write track. I know that when some solids dissociate they just go from say CaCO3 > CaO + CO2, but for this I'm
asked by Tracy 
MathCalculus
Let y = f(x) be the continuous function that satisfies the equation x^4  (5x^2)(y^2) + 4y^4 = 0 and whose graph contains the points (2,1) and (2,2). Let L be the line tangent to the graph of f at x = 2. (a) Find and expression for y'. (b) Write an
asked by Sophee 
Physics
A regulation volleyball court is L = 18.0 m long and a regulation volleyball net is d = 2.43 m high. A volleyball player strikes the ball a height h = 1.76 m directly above the back line, and the ball's initial velocity makes an angle q = 55° with respect
asked by Lindsay 
physics
An oscillator has an amplitude of 3.2. At this instant displacement of the oscillator is 1.4. What are the two possible phases of the oscillator at this instant? Work so far: x= Acos (constant) x=displacement A=amplitude so 1.4=3.2 cos (constant)
asked by Anonymous 
SCI 275
Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic
asked by dawn 
Science  Biology  Ecology
I desperately need help on the iron hypothesis and related facts: Where are HNLC waters found and why? (a map would be nice) What is the fate of the organic carbon fixed by photosynthesis in the deep ocean? How does iron enter the ocean ecosystem? What is
asked by Robert 
Geography
What is around edges of the Pacific Ocean?
asked by Anna 
lit
I have to write a modest proposal similar to Jonathan Swifts. Please tell me if I am on the right tack (if there is changes to be made show me where) It is devastating and heart wrenching to see how the world is slowly transforming into a heat machine and
asked by Larry 
Geography
What rivers in order will the Dallas Cowboys cross on their way to New York? Mississippi
asked by Anonymous 
Math
Please check my answer thanks You bought 4 chairs for $22.oo each a table for $212 and an umbrella for $85 what is the total bill if your sales tax rate is 6% 22x4=88 then add 88 212 + 85 ___________________ 385 x 6% _________________
asked by Anonymous 
SPANISH  MATH
Need the two sentences translated, not answered, just translated: Hay 70 personas esperando en fila para comprar boletos para un concierto. Cuando se acaban los boletos todavia quedan 31 personas en la fila. ¿Aproximadamente cuántas personas consiguieron
asked by Barbara 
Chemisty
Rewrtie and balance the equation: N sub 2 + H sub 2 yeild NH sub 3
asked by M 
physical science
what is the kenetic energy of a 5kg grocery cart moving at 7m/s?
asked by Danielle 
Math
How do I mutliply the following; (4x2+3x3)(4x2+3x3)
asked by Scott 
maths
given the following equation for a circle x^28x+y^2+4y+11=0 find its centre and radius
asked by cecelia 
biology
Describe the significance of the Law of Segregation and its relationship with cell division.
asked by chanell 
math
Find the lateral and surface area of the right rectangular prism whose length is 7 cm, width is 5 cm, and height is 1.5 cm. I think the answer is 36 for lateral area and 106 as surface area. I made a formula, 2(7 x 1.5 + 1.5 x 5)) and I got 36. Then I made
asked by keisha 
math
Find the surface area of the right rectangular prism. The height is 2 in, the length is 10 in, and the width is 4 in. I think the answer is 136. I made a formula, 2(8 + 20 + 40) and I got 136. Is this right?
asked by keisha 
probability
3)If the random variable T is the time to failure of a commercial product and the values of its probability density and distribution function at time "t" are f(t) and F(t), then its failure rate at time t is given by f(t) / 1F(t) Thus, the failure rate at
asked by chinnu 
physics
a 15000N car on a hydrolyic lift rests on a cylinder with a piston of radius 0.20M,. if a connecting cylinder with a piston of 0.04M radius is driven by compressed air, what force must be applied to the smaller piston in order to lift the car? am i doing
asked by BrOwN GuRL 
Preschool QuestionPleae Help!
I asked this question a few days ago and several tutors said there is no one correct answer. There has to be one answer better,because I can only mark one answer. For many children,the development of their imagination affects the development of: A.
asked by Anonymous 
English
Discuss the reversal of the positions of Macbeth and lady Macbeth from what they were in Acts 1 and 2.
asked by S.Cullen 
Super Easy Science  SUPER SIMPLE QUESTION!!!!!
how do I do i stay focused while writing a report??????!!!!!!!!!!!
asked by Kaitlyn 
Math
please explian this not sure about fractions thanks :) 1/3, 5/6 , and 3/8 = add the fractions reduce to loewst terms
asked by Anonymous 
MATH  SPANISH
Need the two sentences translated, not answered, just translated so that I can help my niece: Hay 70 personas esperando en fila para comprar boletos para un concierto. Cuando se acaban los boletos todavia quedan 31 personas en la fila. ¿Aproximadamente
asked by 3RD GRADER AUNT Barbara 
pigskin geography
Are there more than 3 cities which will be visited by a team from a bordering state? Question 1 week 10 November 11, 2007
asked by david 
social studies
where is Jamestown located?
asked by victoria 
World History
I need to cover the most important developments in agricultural and pastoral production in central Africa during the middle ages (6001450). Also, I can cover the creation, expansion, and interaction of economic systems in place of the subtheme. I'm out of
asked by Anonymous 
Writing
Are there any sites that offer free assistance or suggestions for English papers? I'm thinking of tutors or skilled professionals.
asked by Anonymous 
computers
Plan a systems development project for the Bead Bar, using the seven standard systems development life cycle phases
asked by Anonymous 
Middle School Science
I can't find the definitions for the following science terms anywhere: known sample positive test negative test can anyone help?
asked by Adam 
thomas alva edison
I have a list of people where i have to separate them into scientists and engineers and i have one doubt. is thomas alva edison an engineer or scientist. i know he invented light bulb and phonograph. but i was doing a research and he was known as a
asked by julie 
reading
unscramble vashert, relcod, redic
asked by Jan 
World History
I can't find any info in regards to creation, expansion, and interaction of economic systems in central Africa during the time span: 6001450. I've tried many resources and I can't find any info on agricultural and pastoral production, trade and commerce,
asked by Anonymous 
Calculus
Find the limit. Use L'Hopitals Rule if necessary. lim (x^2+3x+2)/(x^2+x) x > 0
asked by Britt 
Literature
What manifestations of Indian culture are seen in our country?
asked by chanell 
spanish Sra JMcGuin
Hi can you help me put in the accent marks on this  I do not know how to do this on my computer  I think this is good. I have to give a presentation on it tommorrow. Melodía lleva un gorro de lana gris y marrón con bolas de algodón. Ella también
asked by sam 
Chemistery
I just want to know why does a balloon filled with heliam explodes when touched with fire?
asked by Umara 
Math/ Computers
Posted by Ariel on Saturday, November 10, 2007 at 4:33pm. So I need a function (parameters: origin x, origin y, destination x, destination y, object x1, object y1, object x2, object y2). The object in this case would be a wall with two points (x1, y1, x2,
asked by Ariel 
spanish Sra JMcGuin
did I miss any of the accents necessary? Melodía lleva un gorro de lana gris y marrón con bolas de algodón. Ella también lleva unas botas altas de cuero marrones con lana suave adentro. Las botas se llaman son UGGS. Ella modela un par de vaqueros
asked by sam 
math
can someone check my answers please subtract 7.1(8.3)= 1.2 multiply (7.6)(1)(6) = 45.6 divid 90/18 = 5 find the reciprocal of 1/3 (94= 5/3 15(12)  18(18) undefined
asked by keauanna 
science
I have to design a sustainable city with a river running through it. Would I put both my water treatment plant and seweage plant on the river. Water up and sewer plant downstream?
asked by mike 
Psychology
Why do some people dream and others don't? Why can we only remember parts of our dreams when we wake up?
asked by Christian 
Social Studies
Name 3 documents and or important people involving the government? For example: as one of the documents, The Articles of Confederation can be one. Can anyone name 2 more at least??? PLZ!
asked by Ellen 
French
Is there some kind of rule in French that you don't sound the last consonant of a word? And I want to know what is the difference between tous and tout?
asked by pak 
CHEMISTRY
C12H20(Y)> 22CH2=O+ 2CH3C(=O)CH2C(=O)CH3 The reagents used are ozone, Zn and H20 Give condensed formula of C12H20Y
asked by Delli 
math
Ecostar is a experimental battery operated car. At a top speed of 70 miles per hourr, the only sounds are wind and noise form the tires. The range of the ecostar is about 100 miles between charges. it takes thirty seconds to plug in the car and 20 more
asked by siskiu 
pigskin geography
Are there more than 3 cities which will be visited by a team from a bordering state? Question 1 week 10 November 11, 2007
asked by david 
sciencemeasurement
what word has this vocabulary??? displays information in rows and columns it ends with an e but i don't know the word
asked by bryan 
economics
would US exports decrease because of an appreciated dollar, lower interest rates, or decreased foreign demand for dollars?
asked by Katie 
math
please help how do you figure out the simple interest on a $14,500 loan at 9% interest for 5 years ?
asked by Anonymous 
Social Studies (World History)
I need to find information particularly on agricultural and pastoral production in central Africa during the time span: 6001450. If info on this subtheme does not offer a lot of info, we may use the bigger theme which is creation, expansion, and
asked by Megan 
Managerial Economics
When a firm increased its output by one unit, its Average Cost rose from $45 to 50. This implies that its Marginal cost is A)greater than $50 B)between $45 and $50 C)$5 D)cannot be determined from the above information
asked by A 
math
if a class collects $155.00 toward a fundraiser goal of $775.00 what fraction reprisents towards it goal? plz help me with my homework!!!
asked by brandi 
social studies
where can I find the answers to pigskin geography week#10,2007
asked by sandy 
English
When you volunteer, is that an act of chivalry?
asked by maggie r 
HUM 130
Religion can affect people in many different ways. List at least two effects that organized religion has had on society and give examples from past and/or present world events that illastrate your examples.
asked by dawn 
SCI 275
biome by responding to the following: Provide a onesentence description of typical precipitation and temperature for summer and winter. Use terms such as cool, cold, warm, hot, dry, and wet. Then, identify the characteristics of a plant and animal that is
asked by dawn 
Math 
PLEASE HELP ME FIGURE THIS PROBLEM! Solve equation and check the solution 3(r+5) = 3(r  1)__________________
asked by Zach 
Economics
Can you give me a website on the book, The World is Flat? It is such a long book. I cannot remember everything I read.
asked by Anonymous 
maths
solve the following equation for x
asked by walter 
maths
solve for x
asked by walter 
maths
solve for x 8=6^x using logs
asked by walter 
geography
what is the mean of geography?
asked by achala 
Calculus
Find the derivative. Simplify as much as possible. s(x)=(912x)/[(x/3)(1/4)]
asked by Britt 
Literature
Why is India called the Land of Prayer?
asked by chanell 
geography
who is the father of geography
asked by achala 
science
what is thermal waste disposal treatment
asked by mike 
Bio
What happens to the oxygen atoms from glucose?
asked by Anonymous 
HUM 130
i need these defined in relations to how they apply to religion. 1. Immanent 2. Religion 3. Theistic 4. Monotheistic 5. Profane 6. Polytheistic 7. Monistic 8. Dogma 9. Nontheistic 10. Transcendent 11. Incarnations 12. Kensho 13. Atheism 14. Agnosticism 15.
asked by dawn 
history
where is the home of John Grisham?
asked by cb 
history
how much did mississippi get for the up fron payement in the Tobacco Litigation?
asked by cb 
history
where was the 4h club for Mississippi founded?
asked by cb 
acct. question
my question is what are the steps for the accounting cycle?
asked by student acc 
Writing
what are good ways to start off personal statement letters? I have a idea on what i want to write about i just don't know how to start off. like the first two sentence
asked by Bryan 
history
what festival happens in Meridian, Mississippi the last week of May each year?
asked by cb 
algebra
x = 2.077(0.481x) x = 0.999x how would i solve for x?
asked by mark 
science
Where does the neutron of heliam come from although hydrogen has no neutron?
asked by Adina 
accounting
Identify one decision that Nike managers make in each of the six valuechain functions.
asked by Anonymous 
Egypt
I need to know like about the dances that the egyptians did in ancient egypt. And I've look alll over the internet and all it told me was what some of the dances were. I need to know like how they did the dances or if it was throw a story or what?
asked by Heather 
Physics
For a box that is twice as wide as it is tall, what is the critical angel for which the box can easily tip over? What is the critical angel for a box that is twice as tall as it is wide? Which box will tip over more easily? Why? I have no idea on where to
asked by Anonymous 
Physics
You have a mass of 2 kg attached to a spring with a spring constant 18 N/m. The mass is at rest at the equilibrium position. At time t=0 you hit the object with a hammer. This blow instantaneously gives the object a velocity of 3 m/s. The motion (after the
asked by Jessica 
Algebra
you are about to take a test that contain questions of type A worth 4 points and of type B worth 7 points. You must answer at least 5 of type A and 3 of type B, but time restricts answering more than 10 of either type. In total, you can answer no more than
asked by CJ 
physics
245kg=????ug I do not know how to change this to ug so if anyone could please show me how I would really appreciate it.
asked by nora 
physics
I also need help with 9.67nm=???km and 2.3X10 to the 4g=????ng
asked by nora 
math
how do you find the vaule of x please help thanks :) example 9(2x)18=36
asked by Anonymous 
math
please help how do you figure out the compound interest on $8,000 invested for one year at 6% compounded quarterly. rounded to the nearest dollar
asked by Anonymous 
Science
What is the Mass of a tenspeed bicycle? What is the volume of a punch bowl? Thank you!!
asked by Chaz 
Social Studies (Early Native American Tribes)
Can u give me some good places to research the Wobenakiak tribe? I have an essay due tomorrow. thx!
asked by mika 
physics
assuming a peak flow velocity of 3 m/s determine culvert diameter if peak flow rate will 9790 cubic metres per second
asked by Anonymous 
math
How do I find the fraction for 25 ?
asked by Stressed 5th grader 
Asronomy
Um what is a quick summary of the myth of Leo?
asked by Smelly Bobrick