Questions Asked on
December 9, 2007

Math (Calc)
Find the Exact value of Pi/24. I'm not sure whether to use a halfangle formula or a difference/sum of angles formula.
asked by Bryan 
MATH
5X4/24EXPONET OF 2
asked by stacy 
physics question
How much heat had to be put in during the process to increase the internal energy of the gas by 1.50×10^4 J ? Here is the given information and questions that I have already answered: n=.450 R=8.3145 (Point A) p=2*10^5 v=.010 (Point B) p=5*10^5 v=.070
asked by marie 
math
need help Tweleve is sixteen less than four times a number.
asked by allen 
Math
Why Does The President Put Vegetables in His Blender? P.S.: It's puzzle 163 HELP!!!!!!!!!
asked by Dorina 
Calculus
What is the derivative of t^3/3
asked by Britt 
chemistry
Aluminum sulfate reacts with sulfuric acid to produce aluminum sulfate and hydrogen gas. How many grams of aluminum sulfate would be formed if 250g H2 SO4 completely react with aluminum?
asked by Michelle 
Math
I need help with an IB Math Internal Assessment on Matrix Powers.
asked by Cassandra 
Algebra 1
Name the constant of variation for each question. Then determine the slope of the line that passes through each pair of point. y=2x
asked by Quiona 
PHYSICS QUESTION!!!!
how do you find the height or time? is it h=squreroot4.9/t or h=squareroott/4.9 or is it something else complettly???
asked by NADINE 
physics
At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0kg crate straight up(method 1) or push it up a 3.00mlong ramp that is inclined at an angle above the horizontal (method 2).In both
asked by ajo 
math help
Five added to three times a number is 29. can someone help me rewrite these in algrebric form thank you Three more than a number times two and the result is twelve. The sum of plus 7 minus 13 is 27. The product of ten and a number plus eight equals
asked by keauanna 
Statistics
This is a goodnessoffit question that I've been trying to wrap my head around for sometime, but I don't understand it since there are two values instead of one. So far, the teacher has only taught us how to deal with one set of observed values. UCLA
asked by Kevin 
Physics
Oxygen (O2) has a molar mass of 32.0 g/mol [.032kg/mol]. What is the rootmeansquare speed of an oxygen molecule at a temperature of 310 K? Vrms=492 m/s What is its average translational kinetic energy at that speed? Kav= ?? J I am having problems with
asked by Christina 
Calculus
Write a formuls for the general term(nth term) of the arithmetic sequence. Do not use a recursion formula. Then use the formula for A to the n to find the indicated term of the sequence find a11: 12, 10, 8,...
asked by Kelly 
Physics
A block of mass M1 = 160.0 kg sits on an inclined plane and is connected to a bucket with a massless string over a massless and frictionless pulley. The coefficient of static friction between the block and the plane is ms = 0.52, and the angle between the
asked by Lindsay 
math
how do i find the common ratio of the infinite geometric ratio series with the given sum and first term? for example: sum=4 first term=7
asked by anonymous 
chemistry
An orgnaic compound contains C, H, No, and O. Combustion of 0.1023 g of the compound in excess oxygen yielded 0.2766 g of CO2 and 0.991g of H2O. A asample of 0.4831 g of the compound was analyzed for nitrogen by the Dumas method. At STP, 27.6 mL of dry
asked by kaliegh 
physics
A bicyclist rides 5.0km due east, while the resistive force from the air has a magnitude of 3.0N and points due west. The rider then turns around and rides 5.0km due west, back to her starting point. The resistive force from the air on the return trip has
asked by ajo 
physics
The hour hand and the minute hand for the famous Parliament clock tower Big Ben in London are 2.7m and 4.5m long and have masses of 60kg and 100kg, respectively. Calculate the total torque due to weight of these hands about axis of rotation when the time
asked by Anonymous 
french
Is this correct meaning I speak a little french. Je parle francais comme ci comme ca?
asked by jay 
Physics
Could someone help explain this problem to me . . . Carbon 14 has a halflife of 5700 year, scientist use this fact to determine the age of things made of organic material. Suppose the average page of a book containing aprox. 0.5mg of Carbon 14 is put into
asked by Andy 
Help help help!!!!!!!!!
Simplify 18. (4)+3= Solve equations of the form x+a=b solve 26. 6.3=t+2.9 30. 8=14+(d+6) 32. 312.9+163.4+b 34.  11/5+w=4/5 Thank You very much!!!
asked by Alex 
Communication/English
Scenario 2:Write an positive message to the supervisor of someone who went above and beyond the call of duty to help you. Scenario 3:Write a negative message to the phone company about charges that should not have been on your last bill. Scenario 4:Write a
asked by Beverly 
NHD project
I am doing a National History Day project this year on the topic of "From Conflict to Compromise" and my thesis statement has to be turned in tomorrow. Could someone check it and make sure it is arguable and true? The inequality of women caused them to
asked by Kimmy 
algebra
Write the equation of the line passing through (2,3) and (2,4). Write the answer in slopeintercept form.
asked by BB 
health
yeah its me again :) and thank you Writeacher for checking my answer on smoking An antihistamine used to treat a common cold is intended to: A. Decongest B. Suppress the cough reflex C. Dry secretions D. Increase mucus clearance I think it could be either
asked by abby 
science
A 52.0 kg male dancer leaps 0.37 m high. (a) With what momentum does he reach the ground? (c) As the dancer lands, his knees bend, lengthening the stopping time to 0.050 s. Find the average force exerted on the dancer's body. (d) Compare the stopping force
asked by marc 
rec and leisure
where would i find information on .. small investments in recreation, parks, sports and arts/culture often yield large economic returns money generated by events, capital development and provision of ongoing services is spend several times in the
asked by DAVE MCDONALD 
Physics
A youngster shoots a bottle cap up a 15.0° inclined board at 1.92 m/s. The cap slides in a straight line, slowing to 0.95 m/s after traveling some distance. If the coefficient of kinetic friction is 0.35, find that distance. I still get 0.315 m as the
asked by Lindsay 
Information Technology
I'm suppose to do Computer System Scenarios. There are 4 of them to do each asking to come up with IT solutions and I have no idea where to begin can someone point me in the right direction? Thanks
asked by Jen 
English
In doing my review for mockingbird one of the study questions talks about how does scouts attitude change towards superstion throughout the story.
asked by sam 
Environmental Science
Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2)
asked by STUDENT 
Roberts
Last fall, a gardener planted 65 iris bulbs. She found that only 56 of the bulbs bloomed in the spring. a) Find the empirical probability that an iris bulb of this type will bloom b) How many of the bulbs should she plant next fall if she would like at
asked by Rose 
math
trying to reduce to simpilest form 1.ta/t^2a^2 i have 1/2(t+a) 2.3y^3+7y^2+4y/y^2+5y+4 i have cannot reduce thanks
asked by jeff 
Calc
How do you take the derivative of 9000/(1+.3t+.1t^2)?
asked by Britt 
sci 275 enviromental science
what are the hazard identification risk of malathion
asked by anaya 
math
can someone tell me what this is Find the pattern 1, 1/4,1/9, 1/16
asked by andy 
Biology
I added amylase to a cornstarch suspension. I thought that amylase breaks down starch into oligosaccharides. But then I heated up the amylase + cornstarch solution and added Benedict's reagent to it (which tests for the presence of monosaccharides). The
asked by Lucy 
math
I don't know what this is? Find the common difference? 1/2, 1/3, 1/6, 0
asked by andy 
Science
Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2)
asked by STUDENT  IMPORTANT! 
Calc
Find the equation of a tangent line of a graph pf y=x^2+4lnx, which is parallel to y=6x3? I know parallel lines have the same slope so the slope is 6 but I do not know how to find the b value.
asked by Britt 
math
Can somebody help me? Find the common difference? 1/2, 1/3, 1/6, o
asked by andy 
sci 275
what are the risk of malathion
asked by anaya 
Government (Judges)
Why would the founding fathers not have requirements for judges, why are they appointed and not elected?
asked by Aubree 
science
all about rockets
asked by tab 
English
I looked at spark notes and still did not find the answer. In going over the study guide for to kill a mockingbird I cant find an answer for scout being superstitious.
asked by sam 
math
a couple more 1) 3+x(4+x)/3+x i got 4+x
asked by jeff 
SraJMcGinn
Hi Just wanted to thank you again for all of your help with Spanish my grade was an A ... Now I am working on to kill a mockingbird 
asked by sam 
math
sorry next one is 3a^21310/5+4aa^2 i got cannot reduce
asked by jeff 
Algebra
what is the yintercept of the line with a slope of 3 and a yintercept of 5? How so i do this problem?
asked by Leah 
Calc
Ralph is taking his final exam. After t minutes into the exam Ralph has correctly solved P(t)=.001t^3+.078t^2+.16t problems. a) at what time was Ralph solving problems most efficiently? b) at what time did Ralph's efficiency decline?
asked by Britt 
Physical Science
does light travel faster through glass or a vacumm?
asked by taylor 
Math
The sum of 2 consecutive integers is equal to their difference.
asked by Lea 
NH4Cl
NH4Cl Is it N surrounded by 4 H's and then the Cl is connected to a H?? Technically I think that couldn't happen so how would this molecule look? Thanks
asked by ~christina~ 
Physics
As the frequency of sound waves increases, the wavelength of the sound waves decreases true or false?
asked by taylor 
physics
As the period of a wave increases, the frequency increases true or false?
asked by taylor 
algebra
Charles opened the old trunk and found $6750 in $1 bills and $10 bills. If there were 150 more ones than tens, how many of each kind were there?
asked by Anthony 
Calc
Classify all critical points of the function f(x,y)=x^2y^2+4x2y+1. I know I have to take the partial derivative and set them equal to zero to get my points and then use the Hessian. For some reason I am not getting the correct answer. partial d/dx 2x+4
asked by Britt 
human risk assessment
What are the advantages and disadvantages of animal studies and epidemiological studies for establishing doseresponse relationships?
asked by Thano 
AP World History
Please give me resources (hopefully, straightforward ones) on the contact between groups of people occured and the nature of that contact, including the notation aboiut the impact of that contact on both parties: Developlment and Spread of Islamic
asked by Marie 
Science Fair
I know that clay adsorbs heavy metals such as lead. How can I pull the lead back off of the clay so that it will percipitate with KI?
asked by Anna 
methods for teaching
please help me find some sites for the ff: 1. situational language teaching 2. audiolingualism 3. communicative language teaching 4. total physical response 5. the silent way 6. community language learning 7. the natural approach 8. suggestopedia
asked by stunning gurl 
Calc
For f(x,y)=x^2+y^2xy+6y, determine the values for x and y such that fx(x,y)=0 and fy(x,y)=0 simultaneously.
asked by Britt 
physics
a 1.4 kg block slides across a rough surface such that it slows down with an acceleration of 1.25 m/s2. What is the coefficient of kinetic frisction between the block and the surface?
asked by ellimac 
math
how many licks does it take to get to the center of a tootsie pop?
asked by Amber 
overt vs. covet
what is an overt behavior??? what is a covert behavior??? what is the difference between overt and covert behavior??? how to assess a person with this kind of behaviors??? thanks a lot for having your time to answer this question...
asked by stunning gurl 
math
can someone help me do The sum of 2 consecutive integers is equal to their difference.
asked by Lea 
Social Studies: Jim Crow Laws
How did Jim Crow laws affect the economy?
asked by Jerry 
Science
Are nodes in a standing wave the result of constructive interference?
asked by marissa 
CALC
What are local extrema?
asked by Britt 
Algebra
Simplify: 2p^5/p^4
asked by Bobby 
Science
Are nodes in a standing wave the result of constructive interference?
asked by marissa 
Gov
Political socialization, of these five, which would you consider the one that has the most influence.. family, organizations, peers, events, or media
asked by Koree 
science
Can anyone describe what this question means... Describe the big idea of in energy transfer in The Greenhouse effect
asked by jack 
Social Studies
what is the role of interest groups on the average American and elected officials.
asked by Sarah 
math
Bob invested $25,000, part at 2% and part at 9%. If the total interest at the end of the year is $1,060, how much did he invest at 2%? A) $8,000 B) $18,000 C) $17,000 D) $16,000
asked by stacy 
Social Studies
what is the role that the mass media plays on the formation of political ideals?
asked by Sarah 
MATHHELP
1.THE PERIMETER OF A RECTANGLE IS TO BE NO GREATER THAN 300IN.,AN THE LENGTH MUST BE 125IN.FIND THE MAXIUM WIDTH OF THE RECTANGLE. 2. 3X2Y=6
asked by stacy 
IB Biology
We are currently learning about innate & learned behaviors. An experiment was done where mallard, pintail & teal ducks were crossbred. These ducks live in the same habitat and could interbreed, but rarely do due to different courtship displays. When they
asked by Melissa 
physics
A 5 kg book sliding on the floor with initial speed 20 m/s comes to rest in 100 m. What is the magnitude of the frictional force acting on the book? The answer is 10 N, but how do you arrive at this answer?
asked by tara 
Social Studies History
What kind of homes did the Cherokees live in?
asked by K.T. 
Math
Solve for the unknown. s/12.0 = 4.0/0.8
asked by Patricia 
Phy
When light passes from air to glass, the light may change direction due to refraction. T or F?
asked by rachel 
AP Physics<<help
A 1.7 kg bundle starts up a 30 degree inlcine with 105 J of Kinetic Eneergy, How far will it slide up in the plane if the coefficient of friction is .3 ?
asked by Kristen 
Science
In water waves, does the disturbance consist of fluctuations in the density of water? Thanks
asked by Kammy 
Algebra
how many points are needed to dtermine a line
asked by Ashley 
Social Studies Cherokee
What contributions have the Cherokees done?
asked by ... 
GCSE Biology
How will a point mutation affect the fermentation of a protien? thankyou!
asked by Jessica 
World History
Provide websites on Martin Luther (Protestant Reformer). I need viewpoints, so a viewpoint of the pope at that time would be great. The pope was against him, so I need sources that are against Martin Luther and his motives. Please provide me some credible
asked by Marie 
Calculus
Use the binomial Theroum to expand the expression and express the results in simplified form (3X + 2)^3
asked by john 
physics repost
Three masses are aligned along the x axis of a rectangular coordinate system so that a 2 kg mass is at the origin, a 3kg is at (2,0) m, and a 4 kg mass is at (4,0) m. Find (a) the gravitational force exerted on the 4 kg mass by the other two masses and (b)
asked by Anonymous 
PHYSICSplease help! :)
If deepsea divers rise to the surface too quickly, nitrogen bubbles in their blood can expand and prove fatal. This phenomenon is known as the bends. If a scuba diver rises quickly from a depth of 25.0 m in Lake Michigan (which is fresh water), what will
asked by Maria 
science
thanks for all your help!!! :P
asked by marissa 
math
how do I compute sales tax? $1,367.85. sales tax rate is 5.75%. also, how do I add in city tax?
asked by Diana 
Algebra
Rewrite into standard form (0,5), m=3/5. Write the equation of the line passing through each of the given pairs of points. Write the answer in slopeintercept form, where possible. (2,3) and (2,4)
asked by Becky 
German
True or false: The Reichstag refers to the legislative body or Congress in Germany. ??????????????????????????????????
asked by Rachel 
Math
Find the exact value of sin(pi/24) So like i need like the value like sqrt3/2 but for pi/24... also if you could show me the steps so i could figure the rest out, that would be cool
asked by Chandler 
Social Studies history
What are some things that the Cherokee have contributed to..? Or what are their contributions?
asked by ... 
Photo Essay Reflection
I have to write a reflection on a photo essay about the Great Depression for English class. It(the reflection) is supposed to explain how the photos show the conditions of the Depression and it is also supposed to relate the photos to the life of the
asked by Jimmy 
Calculus
For the demand function find the elasticity function. Problem 52. p=D(x)=18Sqrt[x] My answer is [36x^1/2 + 2x]/x However, the answer in book is [2(18x^1/2)]/[x^1/2]
asked by Sarah 
Photo Essay...
Ummmm.... Sorry, I forgot to mention that I am already about halfway through it, and I can't seem to get back into it. Being a reflection, it is fairly informal, so I simply describe the photos and then explain their meaning. I just always seem to veer
asked by Jimmy 
science
how can i neutralise acids and alkalis
asked by john 
Calc
Hi! Please help :) Find an equation for the circle of the curvature of the curve r(t) = ti + (sint)j at the point (pi/2, 1) (The curve parametrizes the graph of y = sinx in the xyplane)
asked by Sadie 
statistics
a sales manager used linear regression to find the positive linear relationship between advertising expenditures and sales. The amount of advertising expenditures used to generate the regression equation ranged from $8,000 to $45,000. The sales manager
asked by tar 
biology
Which enzymes are for breaking down hydrogen peroxide into oxygen and hydrogen gases? Explain your answer using your results. Can more than one enzyme be used to perform a particular reaction? Why or why not?
asked by bill j. 
chemistry
in dealing with alcohol mechinisms, how do you know when to do dyhydration (elimination) or substitution? is it secondary and teritary undergo both Sn1 & E1 and primary undergo Sn2 and E2. or is one mech actually preferred? it seems like H2SO4 is always
asked by emi 
Calculus
Given the function f(x) = (x2)/(x^38), what value should be assigned to f(x) to make the function continuous at x=2? Please walk me through this. I have the answer but do not know how to get it.
asked by Britt 
world history
What was the response of the papacy towards Martin Luther? Give me the papacy's side of the story, their viewpoint. Include sources that proves martin luther guilty. It will be best if it is from the point of view of the papacy, specifically the pope or
asked by anonymous 
Sociology
To what extent do sociologists agree that an underclass exists in britain ?
asked by Amy 
science
A 2.747g sample of manganese metal is reacted with excess HCl gas to produce 3.22 L of H2 at 373 K and 0.951 atm and manganese chloride compound (MnClx) what is the formula of manganese chloride compond produced in the reaction?
asked by heather 
Calculus
solve the equation for y in terms of x. Can somebody walk me through this?
asked by Britt 
Government
How do judges make laws? How does the legislative branch influences the process of congress?
asked by Reisha 
Calculus
Find the integral, using the method of substitution where necessary. 63. integrate x^2*Sqrt[x+1] dx What I have done: I have set the (x+1) = u but I feel this is the wrong way to do this problem.
asked by Molly 
physics
Three masses are aligned along the x axis of a rectangular coordinate system so that a 2 kg mass is at the origin, a 3kg is at (2,0) m, and a 4 kg mass is at (4,0) m. Find (a) the gravitational force exerted on the 4 kg mass by the other two masses and (b)
asked by Anonymous 
history
Two hindrances face by monarchs who wanted to be more enlightened in the 18th century?
asked by bill 
science
My teacher wants us to find another name for winter. Can anyone help me?
asked by Nick 
us history
how to write a bill
asked by zac 
english/history
How have our romantic ideals today as evidenced by films stories magazines popular cultre and the media have been influenced by chivalry of the Middle Ages? Examples please?
asked by kelly 
Didn't do research paper
I have a research paper due TOMOROW that my English teacher assigned 2 weeks ago. I waited until Friday to start thinking i could rush it, but so far I have nothing. I did tons of nonstop research and got to page 2 when I realized I was "writing in
asked by Adam 
physics
At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0kg crate straight up(method 1) or push it up a 3.00mlong ramp that is inclined at an angle above the horizontal (method 2).In both
asked by ajo 
Math (Calc)
Find all solutions to the following equation on the interval 0
asked by Bryan 
healthsmoking
What is the purpose of nicotine replacement therapy? A. To reduce the number of cigarettes smoked B. To reduce the food cravings of a smoking patient who is cutting down on the number of cigarettes smoked per day. C. To replce the nicotine lost with
asked by abby