Questions Asked on
October 4, 2008

physics
Find the vector components along the directions noted in parentheses. a. a car displaced 45degrees north of east by 10.0 km (north east) b. a duck accelerating away from a hunter at 2.0meter per second squared at an angle of 35degrees to the ground
asked by i love polka 
stoichiometry
A confiscated white substance, suspected of being cocaine, was purified by a forensic chemist and subjected to elemental analysis. Combustion of a 50.86mg sample yielded 150.0 mg CO2 and 46.05 mg H2O. Analysis for nitrogen showed that the compound
asked by escape 
MATH
The price of fish is £6.40 per kilogram, what is the cost of 1 kilogram (500g)?
asked by Rikki 
chemistry
Select all true statements from the following: a. ) Metals are good conductors of heat and electricity. b. ) Nonmetals generally react by forming covalent bonds (i.e. sharing electrons) or by gaining electrons to form anions. c. ) Halogen atoms have the
asked by Vishnu 
chemistry
Ibuprofen, the active ingredient in Advil, is made up of carbon, hydrogen, and oxygen atoms. When a sample of ibuprofen, weighing 5.000 g, burns in oxygen, 13.86g of CO2 and 3.926 g of water are obtained. What is the simplest formula of ibuprofen? I need
asked by robert 
chem
A hemoglobin molecule (molar mass =65000 g) can bind up to 4 oxygen molecules. In a certain experiment a .085L solutoin containing 6.0 g of deoxyhemoglobin was reacted with excess of oxygen in a constantpressure calorimeter of negligible heat capacity.
asked by Mischa 
chemistry
Identify the species which obey the octet rule for every atom. (The central atoms are underlined). a. ClO3 (Cl is underlined) b. SO2 (S is underlined) c. NO2+ (N is underlined) d. NO2 (N is underlined) e. ClO (Cl is underlined)
asked by Vishnu 
English
A lot of students find English Language a difficult language to learn. Can you think of the reasons or causes of their difficulties in understanding English and can you also write the results or effects of these difficulties on their educational and
asked by Imran 
physics
a plane travels 2.5 km at an angle of 35degrees to the ground then changes direction and travels 5.2 km at an angle of 22degrees to the ground. What is the magnitude and direction of the plane's displacement?
asked by i love polka 
chemistry
The fuel value of hamburger is 3.6kcal/g. If a man eats 1 pound of hamburger for lunch and if none of the energy is stored in his body, estimate the amount of water that would have to be lost in perspiration to keep his body temperature constant. (the heat
asked by Mischa 
Chemistry
A) Find [Zn^2+] and [Fe(CN)6 ^4] in saturated solution of Zn2Fe(CN)6. B) Repeat the above question in 0.1 mM ZnSO4 saturated with Zn2Fe(CN)6.
asked by jimmy 
MATH
What is the average of 6cm, 9cm, 7cm and 10cm?
asked by Rikki 
books
In what sense is Oedipus, through a king, also an "everyman" figure? How might the play of 'Oedipus Rex' be said to explore something fundamental about the limitations involved in being human?
asked by brandon 
chemistry
What is the shape of H3C+ ?
asked by Nathan 
chemistry
Consider a sample containing 2.00 mol of a monatomic ideal gas that undergoes the following changes from State A to State D: State A PA=10.5atm, VA=10.00L State B PB=10.5atm, VB=5.00L State C PC=24.5atm, VC=5.00L State D PD=24.5atm, VD=22.00L Assume that
asked by Jane 
Math
As a busboy in a restaurant, Amiel takes 1/12 h to clear and reset a table. How many tables can Amiel clear in 2/3 h?
asked by Karen 
physics
A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.0 m/s as in the figure below. If his speed is 26.7 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.
asked by Sandhya 
physics
A 66.0 kg base runner begins his slide into second base when he is moving at a speed of 4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical
asked by Sandhya 
Geometry
You are building a ramp that will in the shape of a perfect rightangled triangle. the vertical height of the ramp will be 10 feet. The horizonatal base of the ramp will be 15 feet. What will be the length of the downward sloping side of the ramp? I
asked by Jen 
Chemistry
I'm supposed to balance a redox reaction that occurs in an acidic solution. I already balanced it(h**p://img148.imageshack.us/img148/4304/redoxht8.jpg), but how do I tell if a halfreaction is oxidation or reduction? I know an oxidation reaction loses
asked by Anonymous 
Exams help
Hello I am a Grade 11 student , I am willing to resit my maths exam this November , but I have to take my account that my IGCSE's are this year , my mocks will be in January and my real resit exams will be at the beginning of November , which is just a
asked by Amy 
chemistry
What is the total number of nonbonding valence electrons in the "dipolar ion" form of glycine, +NH3CH2COO?
asked by Nathan 
MATH
A train leaves at 17:50 at arrives at midnight, how long does the journey takes in hours and minutes?
asked by Rikki 
Chemistry
Given the reaction: Fe2O3 + Al > Fe Al2O3 What masses of iron oxide and aluminum must be used to produce 15g iron? What is the maximum mass of aluminum oxide that could be produced? How much aluminum oxide would be produced if the yield is 93%? Please
asked by Harmony 
algebra
you are taking a science course in which there will be four tests, each worth 100 points. you have scores of 89, 97, and 95 on the first 3 teests. you must make a total of 360 in order to make an A. what scores on the last test will give you an A? A:
asked by Carmen 
Poetry
I need to write a one page response to the following poem, answering "How persuasive is this poem? How powerful is its argument? Account for its effect." I don't know where to begin because I don't understand the question. Any suggestions? Promises Like
asked by Matt 
Physics
"Luke Skywalker mixes 250g of hot water (75 deg C) with 500g of cool water (15 deg C). What is the final temperature of the water?" If someone could just give me a formula, I'd be fine. :)
asked by Jen 
chemistry
Select all true statements from the following: a. ) Metals are good conductors of heat and electricity. b. ) Nonmetals generally react by forming covalent bonds (i.e. sharing electrons) or by gaining electrons to form anions. c. ) Halogen atoms have the
asked by Nathan 
chemistry
When copper is dissolved in nitric acid, a brown gas (NO2) is evolved, either by direct production of NO2 or by production of NO which is oxidized to NO2 by O2. Provide a Lewis drawing and resonance structures for the nitrate anion.
asked by Vishnu 
Calculus
Using the derivative definition of f ‘ (x) = (f (x+h) – f (x)) / (h) find the derivatives of the following… 1. f(x) = (2x1) / (x+2) 2. f(x) = sqrt (3x1) 3. f(x) = 3x^4 my answers were: 1. –x+3 2. (3) / [2(sqrt(3x1))] 3. 12x^3 are my answers
asked by Michelle 
Mircoeconomics: Elasticity
Please help! I have a midterm test in a couple of minutes...  If the demand for some good fluctuates, but supply is constant, then which of the following combinations would generally yield the greatest quantity fluctuations? A) large demand
asked by Anonymous 
Critical Thinking
The great French historian Jules Michelet (17981874) sympathized with the French Middle Ages and with the Revolutionary epoch in France, yet he wrote his best work on the despotic French monarchy, which he despised. 5) The statement above, if true, would
asked by Joe 
com 220
how do you know when sources ar reliable? explain your answer.
asked by lynn 
Art for Bob & Mitchell
Since we have received no answer from the emails to Dawn Dupree, I also sent requests to Goldsmith College, where she is a lecturer, The London Printworks Trust, where she also lectures and to the Southwark College of Art, where she has exhibited. Let's
asked by SraJMcGin 
macroeconomics
Assume that a series of inflation rates is 1 percent, 2 percent, and 4 percent, while nominal interest rates in the same three periods are 5 percent, 5 percent, and 6 percent, respectively. a. What are the ex post real interest rates in the same three
asked by Anonymous 
algebra
Q: when graphing the equation y = 4/3x + 2, the y intercept is? A: (0,2) Q: Determine whether  3.5 is a solution of the inequality. x greater than or equal to 6 A: No Q:identify the y intercept of y = x + 8 A: (0,8) Q:solve using multiplication principle
asked by Carmen 
Math
solve 2z^2=5z+3 by factoring. I'm supposed to use ax^2+bx+c=0, but I don't know hot to make it so that they're all on one side and still aren't negatives. Please help.
asked by Jill 
math
1/2+1/4+1/8+1/16
asked by zaira 
U.S. History
what were the major consequences and results of ww11? in the U.S.? in the world? for america future? what were the major domestic consequences of the cold war?
asked by denise 
science(chem) Dr.Bob Question from before
The only reason I asked about the balance is that most analytical balances in use in schools weigh to the nearest 0.1 mg although that may have changed since I retired. There are semimicro balances that weigh to 5 places and microbalances that weigh to 6
asked by ~christina~ 
11 grade math
3 people Curlie, Moe, and Larry have single and double hits at a baseball game. Moe had 3 times as many singles as larry. Larry had 4 times as many Doubles as Curly. They each had the same number of hits and only had singles and doubles. The three of them
asked by Alicia 
3rd grade art
In the picture, "Reading to Children" by Mary Cassatt. What is going on in the painting. She has to write a story. We started with, she is reading to the children. They look focused and interested on what she is reading and the teacher says, redo :( can
asked by elaine 
science
still stuck on this crossword  what is another word for natural, from living matter ( 7 letters) thank you
asked by kieran 
algebra
solve using the multiplication principle 6x < 18 the solution set is {xx ? ?} A: {xx < 3}
asked by Carmen 
Science
What bird is considered a sign of the coming spring?
asked by Jake 
math
In any triangle the sum of the measures of the angles is 180. In triangle ABC, A is three times as large as B and also 16 larger than C. Find the measures of each angle. I also would like to know how to solve these problems: In isosceles trapezoid ABCD,
asked by Faye 
Macroeconomics
Assignment Question I can't find an answer too: Assume that a series of inflation rates is 1 percent, 2 percent, and 4 percent, while nominal interest rates in the same three periods are 5 percent, 5 percent, and 6 percent, respectively. a.What are the ex
asked by Anonymous 
Human resources
Analyze how emotional and physical aspects of a person’s life can influence the employee’s effectiveness in the work environment.
asked by Nadia 
criminal justice
How do community corrections affect American society?
asked by jscott1 
art
i need to say what kind of marks are used to complete a picture. the picture is called the birds by dawn dupree. the picture shows birds, rakes and scaffolding. please can someone explain what 'marks' mean? thanks
asked by bob 
Mitchell, Art
Here's another site on "The Birds" by Dawn Dupree: http://www.jiskha.com/display.cgi?id=1223124635 (Art, Bob) Sra
asked by SraJMcGin 
6th Grade Science
My assignment is to write about a famous scientist. I chose Marie Curie. I found enough information. I only need to do a 5 min. presentation, but part of the assignment requires that I do a simple experiment. I don't know what that could be in this case,
asked by Jules 
MATH
How many grams are there in 2 1/4 Kilograms?
asked by Rikki 
Science
I need some help with knowing that work is not a form of heat. I know this but what I need is evidance. Can someone please explain it to me? THANKS A BUNCH!
asked by Taylor 
math
What do all these letters B,D,E,F,H,K,L,M,N,P,R have in common that none of the other in the english alphabet has?
asked by Tiff 
science
which would have the greatest ionization energy potassium ion, chlorine ion,or argon atom?
asked by Lena 
algebra
solve y  3 >  13 the solution is {xx > ?} A: {xx > 10}
asked by Carmen 
psy
Ms. Sue, I found this article can I use it for both the optimism on physical and psychological health. Please let me know. thanks
asked by rose (Ms. sue) 
macroeconomics
Assignment questions: When the government reduces its budget deficit (reduces government purchases) does consumption rise or fall? Output rise or fall?  I think output and consumption increase but I'm not sure. When the government reduces the budget
asked by Benji 
grammar
Antonyms of words Differcnce.suddenly.
asked by ra ny 
music
does the china's wealth had an impact on the kind of instruments that are traditionally used?
asked by jasmine 
u.s. history
why did the u.s. become invoved in world war 11?
asked by denise 
albegra
Can I get some help with this problem PLEASE!!!! 2^4+15x8(34+36x8)
asked by PJ 
crosswords social studies
My crosswords for question of george washington carver He showedthe uses of peanutus 8laters
asked by mery 
Finance
Why can’t a management and general/expense ratio and fundraising/expense ratio be computed?
asked by Peekamalts 
geography  weather and climate
i need to draw a labelled diagram and explain why depressions bring cloud and rain. do you know any good sites that would help me and explain it simply for me to understand. thanks!
asked by mark 
re
what evidence is there that jesus existed? is it because in the bible it tells you about when jesus was born and that's why we celebrate christmas day.easter day and also all the things jesus did for people. heal the sick , feed the 5,000 and the other
asked by will 
Economics
What is the difference in terms of economic growth, economic development and resource allocation between a market structure and a centrally planned economy (use PPF to explain)? I'm not sure how to compare planned economies with market structure, because
asked by Jess 
science
i have to do a crossword for school and need help on the following question (answer 9 letters)what describes all the organisms within an environment and their relationships with each other and the environment please help
asked by kieran 
com220
determine which sources are reliable and which are not. Explain your answers. here is the sources 1.blog 2.wiki site 3.web site
asked by ano 
com220
how do you plan to support your thesis with complelling arguments and counterarguments? My thesis statement is on oil and gas.
asked by lynn 
math
Mr. Suki plans to drive 900 miles to his farmhouse, driving an average of 50 miles per hour. How many miles per hour faster must he average, while driving to reduce his total driving time by 3 hours?
asked by i love polka 
Oedipus Rex
In his plays, Sophocles depicts men and women as they ought to be rather than what they truly are. How is this true in the case of Oedipus? Who is the real Oedipus?
asked by amy 
Grammar
how can i put this in a much better sentence? Their acquaintance starts off unpleasantly but Elizabeth’s personality catches Mr. Darcy’s heart and finds himself attracted to her.
asked by i love polka 
Geometry
In a rightangled triangle, the two sides that form the right angle are both 5 inches. Calculate the length of the other side (the hypotenuse) I Calculate 7.07 inches. Is this correct?
asked by Jen 
algebra
How do you determine if a polynomial is the difference of two squares?
asked by pat 
Macroeconomics
Assignment Question I can't find an answer too: Assume that a series of inflation rates is 1 percent, 2 percent, and 4 percent, while nominal interest rates in the same three periods are 5 percent, 5 percent, and 6 percent, respectively. a.What are the ex
asked by Anonymous 
algebra
Q: find the slope x + 9y = 18 m = ? A: m =  1/9
asked by Carmen 
algebra
Q: identify the y intercept y = 1/3x A: the y intercept is (0,0)
asked by Carmen 
algebra
from a base elevation of 7900 ft, a mountain peak in colorado rises to a summit elevation of 14827 ft over a horizontal distance of 15838 ft. find the grade of the peak. A: 44%
asked by Carmen 
To Justine: 6th grade math
I removed your post because you gave the name of your school. For your own protection, please do not post any personal information. You asked: "what does E equles?" What is the whole problem? We'd like to help you, but need more information.
asked by Ms. Sue 
accounting
how can i tell which users are internal or external? like bank mangaer parent owner toy suppier cleaner contracted by tlc daycare canada customs and revenus agency
asked by Anonymous 
Algebra
Why can’t a management and general/expense ratio and fundraising/expense ratio be computed?
asked by Peekamalts 
social studies
describe why delegates did not choose either plan for electing the president of the united states
asked by Courtney 
chemistry
who developed the law of deinite proprotion?
asked by candace 
Calculus
how do i find dy/dx of y = (x^31)/cos(x) do I start with (x^31)*cos(x)^1 ? Thanks!
asked by Andrew 
biology
How and in what ways does oil extraction affect politics between countries?
asked by Vana 
science
what is the mass or organic material in an organism or population
asked by kieran 
none
I belong in a hut If you take two from me you'll have glue I am bigger than half myself I cast three shadows at noon and rain never seems to come near me What am I?
asked by Anonymous 
Grammar
I need a word to complete this sentence: But when he proposes to Elizabeth, she turns him down which causes Mr. Darcy to reevaluate his...
asked by i love polka 
Grammar
I need to put this in a better sentence: Upon his rejection, he realizes how he has been acting and when he writes the letter to explain his actions, it changes his character towards Elizabeth.
asked by i love polka 
ATTN bobpursley
On Thursday October the Second, you gave a reply to "martha" regarding the movie chariots of fire. I have posted a response there of my own because I feel that your feedback was misguided. Could you please read my message and then get back to me?
asked by Brandon 
math
8ksquared2+4k3ksquared2+3squared2k+5
asked by briana 
Art
Help! I need to know if Sigmar Polke, Edward Hopper, Patrick Caulfied & Robert Rauschenberg all belong to an art movement. So far, I have been unable to find this information. Does anyone know where I can find it?
asked by Bob 
Geometry
You are presented with a right triangle. The dimension of side a is 2 inches and the dimension of side b is 4 inches. Calculate the dimension of side c. I believe it would be 4.5 inches
asked by Jen 
Us History
What decisions by the leaders of both the American and British military forces proved crucial to the American victory in the Revolution? Why were these decisions so important?
asked by Cesar 
algebra
Q: when graphing the equation y = 4/3x + 2, the y intercept is ? A: (0,2)
asked by Carmen 
algebra
Q: Determine whether 3.5 is a solution of the inequality. x greater than or equal to 6 A: No
asked by Carmen 
algebra
Q:identify the y intercept of y = x + 8 A: (0,8)
asked by Carmen 
algebra
Q:solve using multiplication principle then graph 15x > 75 A: {xx > 5} when graphing the circle is open on the 5 and goes to the right
asked by Carmen 
algebra
Q: solve using the addition and multiplication principles 2 + 8x < 10 {xx ? ?} A: {xx < 1}
asked by Carmen 
algebra
Q: solve using the addition principle 2x + 6 > x + 16 the solution set is {xx > ?} A: {xx > 10}
asked by Carmen 
algebra
Q: find the slope, if it exists, of (2,3) and (4,4) m = ? A: m = 7/6
asked by Carmen 
algebra
find the slope y= 3x + 7 M = ? A: m = 3
asked by Carmen 
algebra
find the slope (3,4), (2,1) m = ? A: m = 3/5
asked by Carmen 
algebra
solve using addition and multiplication principles. Q: 8  6x > 4  5x the solution set is {xx ? ?} A: {xx < 4}
asked by Carmen 
psy
need help finding two peer reviewed article which discusses the effects of optimism on physical and psychological health. please help me find those two sources. thanks
asked by rose (Ms. sue)