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  3. April

Questions Asked on
April 13, 2009

  1. Physics

    A 32-u oxygen molecule (O2) moving in the +x direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at 27 degrees to the x axis. The particles stick together to form an ozone molecule. Find the velocity of the ozone. Express your

    asked by Jacob

  2. Chemistry

    A dry mixture of kno3 and sand could be separated by 1. adding water to the mixture and filtering 2. adding water to the mixture and evaporating 3. heating the mixture to a high temperature 4. cooling the mixture to a low temperature

    asked by .

  3. Maths

    The question is "Show that z-2 is a factor of P(z)= z^3+mz^2+(3m-2)z-10m-4 for all values of m. For what values of m is (z-2)^2 a factor of P(z)?" I've proven the first part, using synthetic division, for all values of m. But the second part, I don't

    asked by TP

  5. Statistics

    If each of two independent file servers has a reliability of 93% and either alone can run the website, then the overall website availability is: A)0.8649, B) 0.9300, C) 0.9522, D)0.9951 I came up with B. 0.9300 is this correct

    asked by Rodnette

  6. physics

    There are four coils of wire being used as electromagnets. They all have the same size and are made up of the same material but have a different number of loops. Which coil will produce a magnetic field with the maximum strength when the same amount of

    asked by sophie

  7. chem help

    The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced? B. If 2.796 grams CO2 are

    asked by eve

  8. chem!

    A solution was prepared by dissolving 0.163 g of sugar, (C12H22O11 MW = 3423gmol) in 100.00 mL water. What is the molarity of this solution?

    asked by eve

  10. Chemistry

    Given the unbalanced equation shown: _Al+_CuSo4 -> _Al2(SO4)3+_Cu When the equation is balanced using the smallest whole-number coefficients, what is the coefficient of Al?

    asked by .

  11. chem

    The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g. 1. Compute the experimental percent by mass of copper in the sample: 1.1664/1.998x 100=71.81% 2. Calculate the percent copper in pure copper sulfate

    asked by Lou

  12. math

    write the equation in the slope-intercept form. 4x - 10y = 11

    asked by yorkie16

  13. physics

    I am having some difficulty with a few problems on my homework and I'm hoping to get some insight. the first one: a robotic space probe of mass 7600 KG is traveling through space at 120 m/s. Mission control determines that a change in course of 30.0

    asked by H.M.

  15. Technical Writing

    Using presentation software, when do you use certain layouts? I am looking for the "why" and "when" here, not the "how to." I am mainly concerned about: -two-column text -content over text -text over content -default title and text Thank you, maigan

    asked by megan

  16. AED 200

    Identify the roles district, state, and federal government agencies have in your local schools. Which agency do you feel has the most significant influence in making policy and curriculum decisions at the local level? Why? Please help. I can not find any

    asked by Ashley

  17. Business Plan

    I am in need of some help in writing a business plan for a fashion, video game and web design company. The plan will include all the above put together because it's the same company. I know I need: 1)Executive Summary 2)Company Overview 3)Marketing and

    asked by Jon

  18. math

    what is 7.686 rounded to the nearest hundredth?

    asked by kayla

  20. Physics

    The polarity of an electromagnet can be determined using the second right-hand rule. A. True B. False Is it B? Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor.

    asked by sophie

  21. AP Literature

    I'm doing a powerpoint presentation and I can't get the music to play throughout the whole entire presentation can you help me please

    asked by Brandis

  22. English

    Hi! Need some advice.Next week I need to teach a class. My task is to find a text (I have found it,it's a german literature)and now I need to do something with this text and it needs to last for 45-60 minutes.It shouldn't be just one task but more(3 at

    asked by laxy

  23. Physics

    Explain using an example how to charge an object positively using only a negatively charged object.

    asked by Sam

  25. Racial and ethnic groups

    Consider racial imbalances in education, the economy, family life, housing, criminal justice, health care and politics. Of these societal challenges facing modern African Americans, which do you think are most difficult to overcome, and why?

    asked by Anonymous

  26. Math (simple)

    3x+6x=18 Thanx!

    asked by Anonymous

  27. IT

    What are the functions of three common computer software applications for the business world available on the market today? How are they used in business organizations?

    asked by Anonymous

  28. Physics

    A 150g fircracker is thrown at 66km/h . It explodes in the air into two pieces, with a 42g piece continuing ahead at 93km/h.How much energy is gained in the explosion by the two pieces. I know you use k=1/2mv^2 though, do you use m1v1+m2v2=(m1+m2)vf I am

    asked by Jacob

  30. college chemistry

    How do you calculate the pH when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl 4)10mL buffer

    asked by Mary

  31. math

    Without looking grace removed 10 marbles from a bag. She removed 5 green, 3 red, 1 blue, and 1 yellow. She repeated the procedure with the remaining marbles and removed 3 green, 3 red, 2 blue, and 2 yellow. Which of these results might possibly occur on a

    asked by mp

  32. Accounting

    I can identified two stakeholders Big Eight accounting firm and Baker Greenleaf if these are correct and is there any others. In the case of The Dilemma of an Accountant. Who are the stakeholders and what is their stake in the case?

    asked by tory

  33. Chemistry

    Fractional distillation is a technique used to separate complex mixtures of hydrocarbons based on differences in their 1. heats of fusion 2. heats of vaporization 3. melting points 4. boiling points

    asked by .

  35. Econ

    What exactly does capitalization ratio measure? My professor says it's computed by dividing capital by total assets. With regards to a bank what does the capitaliation ratio indicate? I do know that it measure risk but I don't understand how it measures

    asked by Andrea

  36. not really school related.

    Okay, I got accepeted for a part time job at school, and the letter says that I should bring a resume. I never had a job before, so how would I bring a resume, but it seems really bad for me not to bring something.

    asked by Chopsticks

  37. What does this mean?

    Can someone please explain to me what this means? A Unanimous Realization of the Need for a Major Change This is the very essence that motivates any revolution. Reform is the key word. A revolution may choose as its object a political transformation, a

    asked by John

  38. Physics

    Particle A has a mass of 2 and a charge of -1. Particle B has a mass of 2 and a charge of +1. Are particle A and B necessarily antiparticles? Explain your answer.

    asked by Linn

  40. Biology

    Convert the following DNA sequence into its RNA equivalent and then using the genetic code, convert that RNA sequence into the amino acid sequence. 5’–TACTTCTTCAAGACT-3’ For this above DNA sequence, what information is contained in the

    asked by Sherri

  41. Biology

    Mendel is the father of modern genetics, but there are some genetic characteristics that cannot be explained by simple Mendelian genetics. Such is the case with the human blood types in which there are 3 alleles for the same gene, A B, and o. A parent can

    asked by Sherri

  42. Biology

    Assignment Type: Individual Project Deliverable Length: Completed Punnett Square and Answers to all Questi Points Possible: 125 Due Date: 4/12/2009 11:59:59 PM CT Part 1: Genetics: From Genes to Proteins Convert the following DNA sequence into its RNA

    asked by Sherri

  43. Chemistry

    Why is the carbonyl group in tert-butoxycarbonyl group (tBOC) less susceptible to attack from nucleophiles than the carbonyl group in esters such as ethyl acetate? Is this something to do with conjugation?

    asked by Alice

  45. integration math

    how to integrate: y' = 2xy/(x^2-y^2)

    asked by stevie

  46. chemistry

    Would a thioester hydrolyse faster or slower than a normal ester and why? I think the thioester is slower, but I'm not sure why.

    asked by Beth

  47. social studies

    What year did the War of 1812 occur?

    asked by Logan:)

  48. Chemistry

    _Mg(C103)2(s) -> _MgCl2(s)+_02(g) What is the coefficient of 02 when the equation is balanced correctly using the smallest whole-number coefficients?

    asked by A

  50. Chemistry

    I am filling out a chem packet. Is what graphite, diamond and fullerene have in common is that they're all made of carbon? My other problem is what are four alternative uses to copper for... 1)electrical wire 2)generators Are copper's two alloys calcolite

    asked by Brielle

  51. Chemistry

    In a gaseous system at equilibrium with its surroundings, as molecules of A(g) collide with molecules of B(g) without reacting, the total energy of the gaseious system 1. decreases 2. increases 3. remains the same

    asked by A

  52. government

    Whose responsibility is it to determine if governmental acts are constitutional?

    asked by kr

  53. science

    do plant cells have chloroplasts or mitochondria? Please help...im so confused!

    asked by baby girl

  55. the human body

    What are the four arm muscles? Im studying to be a dancer so i need to know stretching tecniques containing muscle groups...please help NOW!!

    asked by Evelyn

  56. Math

    How do you know if the relationship shown by the data in a table is linear?

    asked by Angie

  57. puzzles

    does this puzzle mean "down to earth" ------------- this is a box [ ] [ ] [ ] [ earth earth ] -------------

    asked by Delaney

  58. Math

    If I were to graph 20a+34b is greater than or equal to 240, which would be the easier way: graphing it by finding the x and y intercepts, or graphing it by finding the slope and y-intercept?

    asked by Angie

  60. 6th grade vocab

    What does the word "predominant" mean? Oh and please don't give me a website with some big def. I am in 6th grade so I won't understand if the def. is big and long. It also helps if you use it in a sentence . . . just saying. :-D Thanks so much!

    asked by Noelle

  61. language

    Can you correct my metaphor poem pleease MY ROOM My room is a natural disaster When you walk in you think there was an earthquake The bed is always undone Pillows piled higher than a hill The door is higher than a mountain. The floor is a swamp With games,

    asked by john

  62. history

    please check these 1. in 1992, Carol Moseley-Braun became the first African American woman to a. run for Vice President b. be appointed to the Supreme Court c. be named Attorney General d. win election to the United States Senate D 2. In their 1994

    asked by history

  63. 4th grade

    How can I find if I use interpolation or extrapolation when i estimated the volume of three marbles?

    asked by christian gomez

  65. Math - Pre Algebra

    Simple and Compound Interest Find the simple interest. principal= $870 interest rate= 6% time= 9 months Please help me I need the answer for tommorow.

    asked by Tanisha

  66. math- 6th

    s= salary each month $7514 < or equal to s < or equal to $11,267 how do you graph this

    asked by hilary

  67. Physics

    Explain using an example how to charge an object positively using only a negatively charged object.

    asked by Sam

  68. Math 4th grade

    How can I know If I use interpolation or extrapolation after I estimated the volume of 3 marbles?

    asked by christian gomez

  70. HCA 230

    ive looked on google and everywhere and i can not find it can some 1 help aNY SITES OR An ything i don't want the answer but a site would be good compose a list of perspectives on health for your assiged role my role is a patient

    asked by kimberly

  71. art survey

    give several examples of editing techniques used in the production?

    asked by tonya

  72. Math

    how do i solve this equation with out using the quadratic formula: 5x^2 +18x +11 = 0

    asked by Lucyy

  73. chemistry

    You have 4.0 g of solid A, 100.00 mL of water (100.0 g of water), and the total mass of solid A combined with 100.00 mL of water is found to be 104.0 g. The mass percent of A in this solution is

    asked by eve

  75. hca 230

    compose a list of perspectives for patients i found a lot on caregivers but nothing on patients

    asked by dawn

  76. Art

    What important event happened in the netherlands which affected vincent van gogh?

    asked by Hayley

  77. Math - Pre Algebra

    $1280 at 13% compounded annually for 3 years Find each balance. Use the formula B= p(1+r)n

    asked by Ashley

  78. Math (Trigonometry)

    Jasper walks 2 km due east. He then turns and walks 3 km northeast. a. How far is Jasper from his starting point? Round your answer to 2 decimal places. b. What is the direction of Jasper's destination in relation to his starting point? Round your answer

    asked by Marieke

  80. art survey

    information ritual dance

    asked by tonya

  81. college chemistry

    How do you calculate the pH difference when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl

    asked by Mary

  82. Physics - urgent help needed

    Explain using an example how to charge an object positively using only a negatively charged object.

    asked by Sam

  83. college, Microeconomics

    (Daddy Warbucks employs workers in his perfectly competitive factory. Mr. Smith employs workers in his monopolistic factory as the only producer of the thing you really want. Given the following information, determine how many workers each firm will

    asked by Lizzy

  85. english

    i have to write a thesis on the movie freedom writers and im cluless i wathced the movie but am stuck any clues on what to do?

    asked by matt

  86. algebra

    6m+9n-pn+9m= i DO NOT understand this can anyone help me

    asked by sue

  87. accounting

    does withdrawls fall in the catergorie income statement.if not please correct. the other two choices are statement of changes in owner equity or balance sheet.

    asked by lily

  88. accounting

    utilities in the catergorie owner equity i think. if not is it income statement or balance sheet.

    asked by lily

  90. social studies

    true or false:arts in the region include landscapes paintings calligraphy weaving carving and pottery making. PLEASE HELP ME!!!THIS PAPERS DUE TOMORRW AND I CANT FIND AN ANSWER

    asked by nina

  91. Math - Pre Algebra

    $1280 at 13% compound annually for 3 years Use the formula: B= p(1+r)n Please help me I need the answer for tommorow

    asked by Tanisha

  92. english - essay specifically

    i am currently writing my essay and i am about to put an example from the book Julius Caesar. what is the "protocol" how do i put a set of quotes into the essay?

    asked by ton

  93. math

    Use a calculator and systematic trial to approximate each square root to 2 decimal places. SHow your work. a) square root of 20= B) Square root of 55= c)square root of 115= What would systematic trial mean and what do they mean by approximate each square

    asked by rebecca

  95. math

    What length of fencing is required to surround a square field with area 250 m2? Show your work. Give your answer to the nearest cm. How would i do this???plz help, thx!! :D

    asked by rebecca

  96. com-140

    idea for day care center for digi fast at reiver view plaza

    asked by sue b

  97. Science

    What industries could be affected by offshore wind farms? Thank you!

    asked by Mariz

  98. algebra

    Soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each should be mixed to get a 350-lb mixture that is 12% protein?

    asked by ashanti

  100. Science

    He is training chi energy. He is training Chi energy. He is using ki energy. He is using Ki energy. (Which one is correct?)

    asked by John

  101. Spanish (URGENT)

    Can someone please check my work? Answer the following questions using full sentences and giving as many details as possible/. Your answers should be two sentences long (if it only takes one sentence to answer the question, think of one more piece of

    asked by Larry

  102. chem

    The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g. Calculate the percent copper in pure copper sulfate pentahydrate(this is the theoretical percent copper). One mole of copper has a mass of 63.55 g, and by

    asked by Lou

  103. sociology

    the gradual transition from monarchy topolitical democracy during the last half of the second millennium stimulated a corresponding transition from imperial rule by the power of the sword to imperial rule by the pwoer of money.

    asked by kim

  105. economics

    what is communism?

    asked by Anonymous

  106. English

    1. I am in the RCY club. We do clean-up activities and help people in need. 2. I am in the gag club. We make scripts and do plays. 3. I am in the science invention club. We make things with plastic and metals and have a display show. 4. I am in the pop

    asked by John

  107. English

    13. I am in the Seokmun gigong club. We meditate in the club room and control the breath. We learn how to control psychin energy by circulating ki. 14. I am in the sports newspaper club. We read news articles and talk about current news. 15. I am in the

    asked by John

  108. College MATH

    According to the New York Times/CBS poll of March, 2005, 87% agreed that it should be the government's responsibility to provide a decent standard of living for the elderly, and 54% agreed that it would be a good idea to invest part of their Social

    asked by Sabrina

  110. English

    1. The quilt club is greatly exciting. 2. The mountain climbing club is badly interesting. 3. The courses and careers club is great fun. (Can we say "...good fun"?) 4. The ping-pong club is exceedingly interesting. 5. The robot manufacture club is

    asked by John

  111. History

    What cartographer held or had a stake in the Mount Vernon Furnace from 1878-1882?

    asked by Karen

  112. Math - Pre Algebra

    Thank you soo much!! But can you show me the steps on how to caculate 1280(1.13)^3.

    asked by Tanisha

  113. Language Arts

    Homonym riddles; What did the big red bucket say to the small white bucket?

    asked by Anonymous

  115. language arts

    Homonym riddles Why is Sunday the strongest day?

    asked by Anonymous

  116. Geography

    How does climate types found in East Africa influence what grows there? Thank You in Advance to whoever helps me!!

    asked by Tanisha

  117. English

    1. I am in the RCY club. We do clean-up activities and help people in need. 2. I am in the gag club. We make scripts and do plays. 3. I am in the science invention club. We make things with plastic and metals and have a display show. 4. I am in the pop

    asked by John

  118. government

    Why would the development of factions within a p0olitical party hurt that party's chances for success?

    asked by lisa

  120. geography

    i need to find information about kenya. transport healthcare clothing and education. ive looked myself but can only find things for tourists.

    asked by amy

  121. Pre Calc

    From 2 points 400 yards apart on the bank of a straight river flowing due south, the bearings of a point on the opposite bank are 148 degrees and 28 degrees. How wide is the river? I am having a hard time understanding how this is set up. Help please?

    asked by MW

  122. maths

    i need to find out which of these is better value. £3.90 -9 pack of toilet rolls or £2.50 6pack of toilet rolls. i think its th £3.50 but i am finding it hard to show the working out.

    asked by lucy

  123. alagebra

    Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop opn the tour. You need to supply information to anticipate staffing needs until the tickets

    asked by Anonymous

  125. Pre Calc

    In triangle ABC, b=14, c=15, and cos a= 3/5. Find a)side a b) Sin B Help please?

    asked by MW

  126. geometry

    Given: ABCD is a rectangle, diagnoals AC and BD intersect at E Prove: Triangle AEB is isosceles

    asked by Sam

  127. Science

    What industries could be affected by offshore wind farms? Thank you!

    asked by Mariz

  128. college

    Michael has lived in Portland, Oregon, San Francisco, California, and Providence, Rhode Island. Where would the semi colon go?

    asked by Ann

  130. Biology

    Could you help me find any information about the history of genetic technologies and had it first began.

    asked by Selenia

  131. algebra 2

    A colony of germs grows exponentially. It starts at 500 germs. After 8 minutes there are 600 germs. When will there be 1000 germs?

    asked by Ana

  132. math

    10xy-15x^2= 5xy(2x-3)factor out GCF

    asked by ethen

  133. math

    does withdrawls fall in the catergorie income statement.if not please correct. the other two choices are statement of changes in owner equity or balance sheet.

    asked by kneon

  135. math

    7x+21y-7=x+3y-1 GCF 7

    asked by ethen

  136. science

    I don't understand how to answer USE OF DATA in science labs.

    asked by emma

  137. math

    utilities expense in the catergorie income statement. i think. if not is it owner equity or balance sheet.

    asked by kneon

  138. ciminology

    Monday 04/13/09 Need help with this.. based on someone's experience with these procedures. Post a 175- to 350-word response restating the events in the proper order. Answer this question as part of your response: 1.) what sources were the rights afforded

    asked by cris

  140. 8th grade

    essay on should students only have to take reading andmath to go to 9th grade agree or disagree?

    asked by Robin

  141. math

    factor 12x^3+16x^2-8x = 4x(3x^2+4x-2)

    asked by ethen

  142. Chemistry-Enthalpies of formation

    "Synthesis gas" is a mixture of carbon monoxide and hydrogen that is used to synthesize a variety of organic compounds. One reaction for producing synthesis gas is 3CH4 + 2H2O + CO2 = 4CO + 8H2 Using enthalpies of formation, calculate the enthalpy change

    asked by Brigette

  143. Math

    How would I begin to simplify this?? (4((n(n+1)(2n+1))/6)-4((n(n+1))/2)+n)/(4((n(n+1)(2n+1))/6))

    asked by Katie

  145. Biology

    Can you help me find statistics on the amount of people who suffer with genetic disorders/diseases every year or the amount of people who die from genetic disorders. Thanks a million.

    asked by Selenia

  146. fraction

    Which of the following pairs of numbers contain like fractions ? 6/7 and 1 5/7 3/2 and 2/3 5/6 and 10/12 3 1/2 and 4 3/4

    asked by mille

  147. math

    how many solutions are there to the equation -0.2x^+12x+11=0

    asked by Anonymous

  148. Math - Pre-Calc

    So far I got it down to ((4/3)n^3+(11/6)n^2)/((4/3)n^3)+(2n^2)+(2/3)n). Would I be able to cancel out the ((4/3)n^3)s? So that it would be ((11/6)n^2)/((2n^2)+((2/3)n))? Or can I simplify that even futher by combining the (n^2)s?

    asked by Katie

  150. math

    determine whether the sysyem is consistent, inconsistent, or dependent. 3x + 2y = 15 6x + 4y = 30

    asked by yorkie16

  151. math

    if you have the triangle ABC with the points A(47,100) B(-1273,203) and C(971,-732) how would you find the center and the radius of the incircle of triangle ABC?

    asked by kim

  152. math

    find the domain and range of the relation, and state whether or not the relation is a function. {(3,9), (3,10), (3,11), (3,12)}

    asked by yorkie16

  153. college

    The manager of a Drug Store knows that 50% of the customers entering the store buy prescription drugs, 65% buy over-the-counter drugs, and 18% buy both types of drugs. What is the probability that a randomly selected customer will buy at least one of these

    asked by Marie

  155. math

    find the domain and range of the relation and state whether or not the relation is a function. {(1,3), 2,3), (3,3), (4,3)}

    asked by yorkie16

  156. math

    what catergorie capital and comission fall under. i think capital is owner equity and comission is income statement.

    asked by keon

  157. math

    find the coordinates of the x-intercept. 2x + y = -6

    asked by yorkie16

  158. language

    POEM HI, can you check my poem suppose to be simile. WHO AM I A large black nose as dark as the night Two round eyes as big as the moon two fuzzy ears as soft as feathers she`s as friendly as a newborn baby pup she`s courageous as a lion I love her as

    asked by john
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