Questions Asked on
June 26, 2011

physics
A 2 kg particle has a velocity of (2i3j) m/s and a 3kg particle has a velocity of (1i+6j)m/s.Find (a) the velocity of the center of mass(b) the total momentum of the system
asked by TIshatilova 
Linear programming
Riverside Oil Company in eastern Kentucky produces regular and supreme gasoline. Each barrel of regular sells for $21 and must have an octane rating of at least 90. Each barrel of supreme sells for $25 and must have an octane rating of at least 97. Each of
asked by Derek 
Algebra 1
Substitution x  5y=10 2x  10y=20
asked by Kalleigh 
chemistry
150 ml M/10 Ba(MnO4)2 in acidic medium can oxidise what?
asked by Mayank 
physics
A large fish hangs from a spring balance supported from the roof of an elevator. If the elevator has an upward acceleration of 2.85m/s^2 and the balance reads 60.0N , what is the true weight of the fish? Under what circumstances will the balance read 39.0N
asked by Anonymous 
spanish
anoche / mi esposa y yo / saber / que / Carlos y Eva / divorciarse, what would be the correct way to write this sentence using the correct preterit form. Thanks
asked by Anonymous 
physics
A 3 kg toy car with a speed of 10 m/s collides headon with a 2 kg car traveling in the opposite direction with a speed of 3 m/s. If the cars are locked together after the collision with a speed of 4.80 m/s, how much kinetic energy is lost?
asked by Brittany 
chemistry
why does it take more NaOH to neutralize H2SO4 than in HCl
asked by Anonymous 
Math Concentration
Joe has a ring weighing 10 grams made of an alloy of 13% silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 69%. How many grams of silver should he add? My set up is: 10 (.13 + .87) = 10 (.13 + X
asked by missy 
Physics
At what speed would a 1140kg car have the same momentum as a 12,600kg truck traveling at 25 km/hr? The hint given to this problem is that I need to find the velocity of the car and truck. Converting 25 km/hr to m/s I get 6.944 m/s as the initial
asked by Casey 
science
What do you think the maximum and optimum carrying capacities for humans are? Why is this a more complex question for humans than it might be for other species? Why is designing experiments in human demography difficult?
asked by tamika 
math
The pyramid of Giza in Egypt is built of stone and was completed in 2560 BC. The length of each side of the square base is 230 meters and the vertical height is 146 meters. 1. What volume of stone is needed to form a solid pyramid with these dimensions?
asked by colton 
Algebra 1
Find all values of k so each trinomial can be factored using integers. 3s^2 +ks  14
asked by Isabella 
Physics
1. A 0.75kg ball traveling horizontally to the right at 20m/s. A player strikes the ball and causes it to move in the opposite direction with a velocity of 24m/s. a. What impulse was delivered by the player to the ball? b. If this took 0.3 seconds to
asked by Tina 
Chemistry
How many Silver Coins (weighing 26g each) would it take to provide 5 moles of Silver (Ag)?
asked by Michelle 
chemistry
10.3 gm NaBr is solved in 50 ml of water. What will be the molality of solution?
asked by samarth 
English
Can you check this question and answer?(I need to shorten the answer: points 23) 1) Describe the kind of technique adopted by writers (at the beginning of the 20th century OR by early 20th century writers) to represent the unspoken activity of the mind.
asked by Henry2 
Intermediate Algebra
for the following equation, state the value of the discriminate and then describe the nature of the solutions, from the following statements. 20x^25x+3=0
asked by Jennifer 
science207
1. Many poor tropical countries point out that a hectare of shrimp ponds can provide 1,000 times as much annual income as the same area in an intact mangrove forest. Debate this point with a friend or classmate. What are the arguments for and against
asked by tamika 
Chemistry
A buffer solution is prepared by dissolving 0.400 mol of CH3COOH and 0.200 mol of CH3COONa in 1.00 L of water. 1.00 mL of 10.0 M HCl is added to a 100 mL portion of this solution. What is the final pH of the resulting solution? Ka of CH3COOH = 1.8 x 10¯5
asked by Sandy 
spanish
Anoche mi esposa y yo supimos que Carlos y Eva van a divorciarse. what is the correct preterit of the verbs and put them into the sentence.
asked by Anonymous 
Statistics
Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Student's grades  A, B, or C, on a test.
asked by Jonathan 
Chemistry
A solution is prepared by diluting 65.0 mL of 0.175 M methylamine, CH3NH2, to a total volume of 225 mL. Calculate the pH of the diluted solution. Kb (CH3NH2) = 4.40 x 104
asked by Mallory 
Physics
1. A 0.200kg ball moves with a velocity of 0.3m/s. It collides with a second ball that is at rest and has a mass of 0.1kg. After the collision, the velocity of 0.1kg ball is 0.26m/s. What is the new velocity of the first ball. Please indicate which
asked by Carol 
English
I urgently need you to chech the question and the answer to it. I considered your corrections. 1) Explain the meaning of the word compromise applied to the Victorian way of life. (Explain how the word compromise applied to the Victorian way of life). Then
asked by Henry2 
chemistry
If the mass od one neutron is 1.00866 amu, the mass of one proton is 1.00728 amu, and the mass of 12C nucleus is 11.99671 amu, calculate the binding energy for the 12C nucleus. A1.10x10^18 kJ/mol B8.90x10^9 C1.10x10^15 D8.90x10^12 I keep getting
asked by mali 
English
I forgot to include these statements about a letter of inquiry to a hotel. Which connectors shall I use to include my queries to the hotel? Thank you. 4) I'd like to know the following things: First, if the bus line in front of the hotel goes directly to
asked by Henry2 
physics
There is a block on top of an incline plane. The incline is going down to the right. The angle to the right of the 90 is 36.9 degree. There is a force pushing on it from the left. Find the applied force (F) needed to prevent the block from sliding down the
asked by k9 
Math
I have a Final Exam in Math tomorrow, and as I was going over my notes, I saw a question like this: Simplify 6(34)7(2) How do you simplfy integers when doing order of operations? I cannot quite remember this.
asked by Erika 
physics
What current flows when a 40 v potential difference is imposed across a 1.8 kÙ resistor?
asked by Debra 
Chemistry
A buffer solution is prepared by dissolving 0.400 mol of CH3COOH and 0.200 mol of CH3COONa in 1.00 L of water. 1.00 mL of 10.0 M HCl is added to a 100 mL portion of this solution. What is the final pH of the resulting solution? Ka of CH3COOH = 1.8 x 10¯5
asked by Kendra 
social studies
The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished:
asked by Anonymous 
Math
Luis is 10 years older than his brother. Next year, he will be three times as old as his brother. If the brother's age is represented by a, what is Luis' age? What will be the brother's age next year?
asked by Brittany 
History
All of the following inclined the US toward entering on the side of the Allies in WWI EXCEPT? although some progressives opposed war, the idealistic progressive spirit pointed toward an American campaign to end militarism and establish a peaceful world
asked by Kristina 
Algebra 1
Evaluate. Express each result in scientific and standard notation. (4 x 10^2)(15 x 10^6)
asked by Bella 
Biology
Good day! I actually just have one question and I have been looking at links and everything, but i still don't understand>>>>... "What abiotic factors seem to be the greatest determinants of terrestrial biome locations?"
asked by Sam 
child care management mod 4
Teachers in child care centers should meet which of the following educational qualifications? A. High school graduate B. High school graduate with some college course work in child development or early childhood education C. Two to four years of college
asked by jj 
English
Just to be sure that everything is OK. 1) Explain the meaning of the word compromise (written in italics) applied to the Victorian way of life. Then outline briefly the main features of Victorian society. 2) I'm emailing to you (I'm sending you this
asked by Henry2 
Algebra 1
Two musical notes played at the same time produce harmony. The closest harmony is produced by frequencies with the greatest GCF. A,C,and C sharp have frequencies of 220,264,and 275, respectively. Which pair of these notes produces the closest harmony?
asked by Isabella 
Math Statistics
Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Student's grades  A, B, or C, on a test.
asked by Phillip 
chemistry
If 10 calories of heat are added to two grams of liquid water what is the temperature of the water
asked by joe 
Algebra 1
Arrange the terms of 3x+4x^5  2x^3 so that the powers of x are in ascending order.
asked by Bella 
physics
A box is raised using a rope with a acceleration of 3.9m/s(upward)tesnsion of the rope 57N mass of box in kg?
asked by Mary 
CHEMISTRY
The concentration and volume of reagents combined in each trial are listed in the table below: Trial 00020 M 00020 M H2O(mL) Fe(NO3)3 (mL) KSCN (mL) 1 5 2 3 2 5 3 2 3 5 4 1 4 5 5 0 Initially (right after combining and before any reaction occurs) the
asked by AMY 
English
A last doubt. Which of the following sentences is best formulated? Which are grammatically wrong? Could you check the last 2 points, too? 1) The flowers are presented not as statically as in a painting, but as alive with motion. 2) The flowers are
asked by Henry2 
math
Let U = {5, 10, 15, 20, 25, 30, 35, 40} A = {5, 10, 15, 20} B = {25, 30, 35, 40} C = {10, 20, 30, 40}. Find A ⋂ C.
asked by Anonymous 
calculus
A stone is dropped from a height of 144 feet. a. When will the stone hit the ground? b. With what velocity does it hit the ground?
asked by Carly 
Statistics
The mean of a data set is 23 and 12.6. The zscore is 1.30. What is the standard deviation?
asked by Shelle 
math
Find the median and the mean for the data set below. 5.4 2.0 6.8 3.1 2.9 4.7 2.1 5.0 1.9 3.4
asked by Anonymous 
composition and communication 1
Indiviuals can be denied credit for a number of reasons, Individuals who are near limit on existing cards, have to much outstandind debt or too many accounts overall, have a history of a late payments, charge off or bankruptucy are likely to be denied
asked by carrie 
chemistry
A radioisotope has a neutron/proton ratio which is too low. Which of the following processes will not occur for such a nucleus?
asked by mali 
principles of marketing
Once you have developed your product/service, you then need to determine how to make it available to the end user. Using your textbook and the articles from the Databases in the AIU Library, develop a distribution system for the product/service you chose
asked by Hector 
Algebra 1
The graphs of 3x+2y=1, y=2, and 3x4y=29 contain the sides of a triangle. Find the measure of the area of the triangle.
asked by Sam 
English
I need you to check the question and my answer to it. Shall I include more details in the question? In sentences 3 and 5 I don't know which connectors to use (to express a contrast between two different concepts). How can't find a suitable verb to finish
asked by Henry2 
math
if two sides of triangle are 15 and 25 cm respectively,what is the range of values of the third side?
asked by judy ann 
math
The equation y = 1777x + 27,153 can be used to predict the number y of gun deaths in the United States. X years after 2000, that is, x = 0 corresponds to 2000, x = 3 corresponds to 2003, x = 6 corresponds to 2006, and so on. Predict the number of gun
asked by tee 
fin 200
I need help with the Comprehensive Problem: Adams Corporation on p. 119 (chapter 4)
asked by Happy 
computer science
is it true or false A fixed length hash value of 128 bits is less collision resistant than a fixed length hash value of 512 bits
asked by Roger 
Physics
A cart of apples is rolling toward you in the street. It’s velocity is 2m/s. Its total mass is 50kg. You are running toward the cart of apples (hint your velocity is opposite direction of the carts velocity). You have a mass of 45kg. What velocity must
asked by Tina 
overton high
two crates weigh 9kg and 14kg with a force of 195 newtons. what is the acceleratio?
asked by mike 
geometry
Find the area of the parallelogram that has coordinates of A(2,2), B(4,2), C(2,2), and D(4,2). Find the base and height first.
asked by Cassandra 
accounting
You trade equipment in 2010 and pay a $10,000 cash boot for similar equipment with a fair market value of $20,000. The transaction cost is $100. You paid $25,000 for your old equipment. The depreciation deduction allowed for tax purposes on the old
asked by janai preister 
Calculus
find the rate of change dy/dx for y=x(1x); x=1
asked by Lee 
chemistry
A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x 107 mi2 in diameter, while the diameter of the 2002 hole was 6.9 x 106 mi2 Calculate the difference in size between the two holes in
asked by roy 
Statistics
Can someone please give specific examples of how psychologists use statistics
asked by Carla 
science207
Many ecologists and resource scientists work for government agencies to study resources and resource management. Do these scientists serve the public best if they try to do pure science, or if they try to support the political positions of democratically
asked by tamika 
Trigonometry
I need help proving the following identity: 4(sin^6(x)+cos^6(x)) = 43sin^2(2x) I am completely lost, if anybody can please give me a stepbystep guide to figuring this out, I would be forever grateful!!
asked by Rick 
science207
1. Suppose that you were head of a family planning agency in India. How would you design a scientific study to determine the effectiveness of different approaches to population stabilization? How would you account for factors such as culture, religion,
asked by tamika 
English
Provide at least two specific examples of changes you have implemented based on what you learned this week. What would be two examples of this? Thank You!
asked by Sharron 
CHEMISTRY
The concentration and volume of reagents combined in each trial are listed in the table below: Trial 00020 M 00020 M H2O(mL) Fe(NO3)3 (mL) KSCN (mL) 1 5 2 3 2 5 3 2 3 5 4 1 4 5 5 0 Initially (right after combining and before any reaction occurs) the
asked by AMY 
math
Let U = {5, 10, 15, 20, 25, 30, 35, 40} A = {5, 10, 15, 20} B = {25, 30, 35, 40} C = {10, 20, 30, 40}. Find A ⋂ C.
asked by Anonymous 
algebra
solve square root of 72x to 3 power divided by 8x
asked by scott 
medical office asistant
does anyone have a sample of a penn foster discharge summary
asked by Anonymous 
English
1) Why do you say I'm writing to you to find out about hotel accommodation BUT I'm emailing you to find out ... thank you I'm passionate about photography is that same as I'm fond of photography?
asked by Henry2 
chemistry
how much heat energy would it take change the temperature of 50 mL of water from 23 C to 28 C?
asked by S 
Algebra 1
complete. 6t to the 2nd power  23t + 20=(3t  4)(2t  .....)
asked by Brittany 
American Govt
how does the Military support democratic ideals?
asked by Anonymous 
Physics
Light is both a mechanical wave and a particle.
asked by Thomas 
chemistry
Calculate the mass defect for the formation of phosphorus31. The mass of a phosphorus31 mucleus is 30.973765 amu. The masses of a proton and a neutron are 1.00728 and 1.00866 amu, respectively
asked by mali 
Algebra 1
Evaluate. Express each result in scientific and standard notation. (4 x 10^2)(15 x 10^6)
asked by Isabella 
Algebra 1
There is three times as much water as land on Earth's surface. What percent of earth is covered by water?
asked by Isabella 
Algebra 1
Simplify. Assume that no denominator is equal to zero. (4a^1)^2/(2a^4)^2
asked by Isabella 
Algebra 1
Latoya bought a new dress for $32.86. This included 6% sales tax. What was the cost of the dress before tax?
asked by Isabella 
Algebra 1
The graphs of 3x+2y=1, y=2, and 3x  4y=29 contain the sides of a triangle. Find the measure of the area of the triangle.
asked by Kalleigh 
Physics
Question: A 0.200kg ball moves with a velocity of 0.3m/s. It collides with a second ball that is at rest and has a mass of 0.1kg. After the collision, the velocity of 0.1kg ball is 0.26m/s. What is the new velocity of the first ball. Please indicate which
asked by Tina 
Statistics
In an advertisement, a shoe store claims that its mean online delivery time is less than 30 hours. A random selection of 36 delivery times has a sample mean of 28.5 hours and a standard deviation of 3.5 hours.
asked by Eric 
Math
Find the limit of ( n(n+1)/2 )^2 * 2/n^3 * 2/n as n goes into infinity I keep on getting 1, which is the wrong answer. Please help!
asked by Kay 
Algebra 1
Solve Each equation. 7(x  12)=13+5(3x  4)
asked by Sam 
Algebra 1
Solve each equation. p(p+2)+3p=p(p  3)
asked by Sam 
Algebra 1
solve each equation x(x  3)  x(x+4)=17x  23
asked by Sam 
Algebra 1
Solve each equation. t(t  12)+t(t+2)+25=2t(t  5)  15
asked by Sam 
Algebra 1
If g(x) = x^2+2x, find g(a  1)
asked by Sam 
Algebra 1
Evaluate. (15x)^3  y if x=0.2 and y=1.3
asked by Bella 
calculus
differentiate the following funcation: R(t) = (t + e^t)(4 sqrt (t))
asked by Zoe 
calculus
fin derivative of the function (t+e^t)(4 sqrt t)
asked by Zoe 
Chemistry
Can you please explain what's a covalent bond and give some examples? would NN be a covalent bond?
asked by Anonymous 
english
where will i get the essay in about 500 words on "polluting the environment is dangerous for human existence",prove using present instances
asked by YASH 
english
from where i will get an essay on the topic "the complete development of students is only possible by strict discipline " write for or against the topic
asked by YASH 
Writing
Aristotle observed arguments only have two parts: statement and proof. T/F
asked by Jonathan 
Accounting
If both my trial balance and balance sheet are balanced, my business should breakeven with no gain or loss. But my accountant told me my business has lost $500,000. Could my accountant be right?
asked by KF 
English
What do you think of this sentence? Thank you. 1) In the indirect interior monologue the narrator comments upon the thoughts of the character and maintains logical and grammatical organization.
asked by Henry2 
physics
For specific heat and measuring 5 mL of air within a syringe and comparing while submerging in boiling water and ice water and extrapolating back, is your measurement of absolute zero close to the actual value (273 °C)? How might you change the
asked by Anonymous 
English
Thank you very much for your help. I tried to correct all the things I made wrong. Can you check my question and answer one more time. 1) Explain then the meaning of the word compromise applied to the Victorian way of life. (Explain how the word compromise
asked by Henry2 
Financial management
you have won a lottery with two option. A: take 500000 immediately, B: take 40000 at the end of every year 1000000, over a period of 25 years. Required rate of return is 5% Q1. what option would you prefer? Q2. What will be your answer if rate of return is
asked by SARANYA 
math
set operations A^c = (A complement) B^c = (B complement) A^c intersection B^c intersection C no parenthesis :// do i get the intersection of all three or get the intersection of A^c and B^c first?
asked by rose 
algebra
In land what is the dollar value of it, at 100% (9x)=11% ?
asked by ofelia 
psy
6. Professor Klinger says that all of your ideas come from interaction with the environment rather than anything that you were born with. The professor is advocating a theoretical perspective based on a(n) ______________ view. (Points : 1) tabula rasa
asked by danielle 
english
Like the popular belief that older adults do poorer in schools than their younger counterparts, the midlife crisis
asked by lily 
physica
what is an example of a lab where you measure conservation of momentum? Please don't give the car example or ball pendulum because those are too difficult to understand.
asked by Susan 
Algebra 1 a
Need help to solve can anyone help me please 6x9y = 25.5 7y2x =10.0 solve the elimination method
asked by Manu 
Geometry
I need help with counterexamples and all the questions are false. 1.If an angle measures 34 degrees ,then the angle is acute. 2.If the length of twwo segments are each 17 feet,then the segments are congruent. 3.If two angles 32 and 148 degrees ,then are
asked by Lauren 
chemistry
If I have 10 silver coins and they weigh 55 grams and displace water from 25 mL to 35 mL, what is the density? What is the specific gravity?
asked by S 
Algebra 1
Complete. g to the 2nd power  8g+16=(g  4)(g....4)
asked by Brittany 
composition and communication 1
please if anyone can help me on this assignment. That would be so awsome. I have to identify which of the two selected pharagraphs was more effective, focusing on the writing elements rather than the opinions presented
asked by carrie 
Applied Physics
A year of 365 days is equivalent to 5.26 x 10 to the 5 seconds
asked by Eric 
Physics
True or False Light is both a mechanical wave and a particle
asked by Eric 
Algebra 1
Solve. 2/5 > 4z/7
asked by Isabella 
English
1. The Davinci Code is the most exciting book I've ever read. 2. The Da Vinci Code is the most exciting book I've ever read. (Which title is right? Can we omit 'the'?)
asked by rfvv 
math
Find the median and the mean for the data set below. 5.4 2.0 6.8 3.1 2.9 4.7 2.1 5.0 1.9 3.4
asked by h h