Questions Asked on
November 22, 2008

  1. physics

    From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/h?

  2. Chemistry.

    Calculate the mass of CaCO3 that would produce 40 mL at STP. STP means P= 1 atm and T= 0 degrees C. How do I find the mass?

  3. physics

    During a workout, a person repeatedly lifts a 13 lb barbell through a distance of 1.5 ft. How many "reps" of this lift are required to burn off 100 Cal?

  4. Astronomy help!

    The average speed of stars relative to the Sun in the solar neighborhood is about 20 km/s (this is the speed at which we see stars moving toward or away from the Sun - NOT their orbital speed). Suppose you discover a star in a solar neighborhood that is

  5. spanish need help

    I did the work and would be gratful if someone could check it. complete sentences with imperfect or preterite forms of verb in parenthses My word form is in "Quotes" - The sentences were given to us in the workbook 1. (escribir) Claudia "escribio" un

  6. physics

    A steel ball has a mass of 4.0kg and rolls along a smooth, level surface at 62m/s. A) Find its kinetic energy(i got this and its 7688 joules) B)?????-At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22

  7. physics

    1.) Water flows from a 2 cm diameter pipe, at a speed of 0.35m/sec. How long will it take to fill a 10 liter container? 2.) A horizontal segment of pipe tapers from a cross-sectional area of 50 cm^2 to 0.5 cm? The pressure at the larger end of the pipe is

  8. math

    What Happens to People Who don't Know Toothpaste From Putty?

  9. trig

    Find all solutions of the equation 2sin^2x-cosx=1 in the interval [0,2pi) x1= ? x2=? x3=?

  10. Chem

    How would you expect the following series of compounds to compare in behavior in the two tests(SN1 vs. SN2)? CH3CH=CHCH2Br (1-bromo-2-butene) CH3-C=CHCH3 l Br CH3CH2CH2Br (1-bromopropane) I know primary alkyl halides like 1-bromopropane favor SN2 reactions

  11. Chemistry

    Calculate the work involved if a reaction with an enthalpy change of -2418 kJ is carried out in a vessel with a mobile, frictionless piston. Other details: the reaction is H2(g) + 1/2Oxygen2(g) yields H2O(g) with enthalpy change of -241.8 kJ/mol. The

  12. chemistry

    GUYS I HAVE A PROJECT DUEE.. AND I HAVE NO IDEAA WHAT TO DOO.. PLEASE HELP MEEE. THIS CHAPTER IS ABOUT ELECTROCHEMISTRY! QUESTION--> I HAVE BEEN LUCKY ENOUGH TO OBTAIN A SHRINKY DINK 2000(FOR THOSE OF YOU IN THE KNOW, OR THOSE OF YOU WHO ARE AROUND

  13. physics

    A heat transfer of 8.7 multiplied by 105 J is required to convert a block of ice at -12°C to water at 12°C. What was the mass of the block of ice?

  14. English Criticism

    POEM FOR ELSA by Michael Roberts THAT day the blue-black rook fell pitifully dead You wept and stormed, tossing your lovely head, Hurling commiseration into broken skies That wept and wept, vainly as any eyes. You pitifully wept, nor would be comforted

  15. CHEMSTRY

    . A small amount of solid Hg2Cl2 and 25 ml of metallic mercury were added to a solution of 5.03 x 10-2 M NaCl. A platinum electrode immersed in the layer of mercury was connected to a reference half-cell whose electrode potential was 0.222V. The voltage of

  16. Physics

    a child causes a wagon to accelerate by pulling it with a horizontal force. newton's third law says that the wagon exerts an equal and opposite force on the child. how can the wagon accelerate

  17. Microeconomics (trying this question again)

    Just want to see if i did good in my choices, thank you 11. If an economy has to sacrifice increasing amounts of good X for each unit of good Y produced, then its production possibilities curve is: (Points: 3) bowed out from the origin. I PICKED THIS ONE

  18. L.A

    What does harsh rhme with? Thank you

  19. calculus

    Two runners, A and B run on a straight race track for 0

  20. Integrated Science

    cabbage leaves___caterpillar___kisskadee___hawk 1.)what do the arrows in this food chain show? 2.)give the reason why a food chain must begin with a plant. Thanks for all your help.

  21. algebra

    let the function by y = ax^2 + bx + c and sub in (1,2),(2,7), and (3,15) this gives you 3 equations in 3 unknowns which solve quite nicely to a = 3/2 b = 1/2 c = 0 so the function is y = (3/2)x^2 + x/2 or y = (3x^2 + x)/2 can somone please explain to me

  22. earth science

    what is the process that binds sediments into sedimentary rocks? i think it is deposition, compaction, and cementation. am i correct???

  23. Physics

    A projectile is fired with a speed of 50 m/s at an angle of 37 find the horizontal and vertical components of its velocity find the time that the projectile will spend in the air find the distance downfield that it will travel

  24. Ap World History

    This is my DBQ for an essay The Islamic and Christian religions differed on their views of merchants tell about 1500 C.E. As time crept by people of the Christian religion changed their views and became almost identical to the Islamic view that didn’t

  25. AED

    Choose a grade level and a scientific concept appropriate for that level. • Plan a science experiment to explore this concept. In your paper, address the following points: o List the equipment and materials to be included in the science kit. o Explain

  26. government

    What factors enabled congress to dominate the American government in the nineteenth century? Was the problem a series of weak president?

  27. America Governmetn

    historian Henry Adams argues that declining quality of president since Washington disproves the theory of evolution. If the initial president were wrong, why did congress dominate even at that time?

  28. government and nation

    Why didn’t presidential power increase after the nation’s first three wars (1812, Mexican, Spanish-American)? Were the wars different or was the nation different?

  29. MGT HELP ASAP

    The results show I am a leader. I would apply my strength as a leader to a mix situation that might arise regarding the supervisory responsibility I selected by ..... i need to finish this by explaining it more.....

  30. congress and law

    Why hasn’t the president simply vetoed such laws since Congress was most often unable to override a veto? Will a line-item veto now give the president too much of an advantage over Congress?

  31. government

    Does a president’s personality have much to do with the selection of staff organization (circular or pyramid)?

  32. government

    Why is the president more successful in foreign policy? This difference narrowed from 1965 to 1975 (55% foreign policy to 46% domestic policy). What explains the president’s poorer recent performance in foreign policy?

  33. Science

    Can you please tell me about what the difference between a dilute and a concentrated souloution is? Can you please tell the difference between a acid and a base? What are their similarities and their differences? How can we know when somehting is a acid

  34. government

    Why can’t the president sit down with a group of able and intelligent advisers and produce an effective program to address the problems facing the nation?

  35. MATH HELPPPP!!!!!

    If the sum is zero, what is the relationship of the two numbers? (this is an integers question--adding and subtracting-multiplying-and deviding positive and negative numbers)

  36. social studies

    imigration time line in the usa between 1450-1900

  37. social studies

    immigration time line in us

  38. measuring quality

    word paper in APA format describing two approaches or indicators to measuring patient outcomes

  39. Question

    Before the Civil Rights Movement there was a lot of prejudice towards blakc people. In the boxes below, draw three signs you might have seen that were unjust towards black people in a small southern town. I need help. I sorta understand what it is asking.

  40. methodologies

    Why did Centers for Medicare and Medicaid services(CMS) implement National Correct Coding Initiative 1996?

  41. methodologies

    What are some of the risk areas that can be identified through the auditing process?

  42. Literature

    How does the water symbology in Whitman's poetry connect to his philosophy on Transcendentalism?

  43. Geography- Canada

    what are the factors of precipitation in Regina?

  44. english 3

    what symbols and imergry are used to create the theme, "the relization that evil can infect poeple who seem upright" from Young Goodman Brown

  45. Math

    1 Multiply; 3 ( y + 8 ) = 2. Multiply; -4 (y-10) =

  46. Math

    Factor 7x-7

  47. Chem Urgent Help ?

    I have a lab dis monday .. plz someone help .. Lab Title is (( Recrystallization of a Solid )) Pre-Lab Questions.... Explain the purpose of the following in this experiment. a) using hot filtration b) not cooling (chilling) the hot filtered solution

  48. physics

    A 1.2 kg block of ice is initially at a temperature of -5°C. (a) If 5.8 multiplied by 105 J of heat are added to the ice, what is the final temperature of the system? °C (b) Suppose the amount of heat added to the ice block is increased by a factor of

  49. Differential equation

    1.) (2x+y)dy + (2x+y+6)dx=0 2.)(5t+1)t ds + (25t-1)sdt=0 thanks. :)

  50. physics

    A 1.2 kg block of ice is initially at a temperature of -5°C. (a) If 5.8 multiplied by 105 J of heat are added to the ice, what is the final temperature of the system? °C (b) Suppose the amount of heat added to the ice block is increased by a factor of

  51. physics

    If a person radiates about 74 W of power at room temperature, how long does it take for a person to radiate away the energy acquired by consuming a 235 Calorie doughnut?

  52. I have returned

    Many thanks in advance as always. 1) Is there a resource through which I could obtain *old* newspaper material from between 1889 and 1900? 2) Both of following two topics concern the American Revolutionary War. 2)a What were relationships between white

  53. PDHPE

    Develop a profile of Asthma. Justify why it has been selected as a health priority area in Australia. (World Limit 1000).

  54. history

    how do I use the word succor in a sentence?

  55. 2nd grade

    I have project to do I have to do some invention can any one give me idea what to do? thanks.

  56. trig

    solve the following equation in the interval [0,2pi]. Give the answer as a multiple of pi. Do not use decimal numbers (sin(t))^2=3/4

  57. Math

    How do you solve a quadratic function?

  58. Algebra

    Micheal loaned two of his roommates a total of $4,000. He charged his first roommate 3% interest and his second roommate 4% interest. After six months he collected a total of $332 in interest. How much did he loan each friend?

  59. Calculus

    Find the limit as x approaches infinity of sin(2x)/x The answer is 0. How can I show that this is an indeterminate form so I can use L'Hopital's? And even if I use L'Hopital's, it comes out to be 2cos(2x), which doesn't help if I replace x with infinity.

  60. college grammar

    Iknow the right answers but I cannot explain why they are right. Please help using the indicator of what to look for. Pronoun-antecedent agreement 12a. When a driver wants to buy a new vehicle, he or she usually test drives them. COM 150 12b. When a driver

  61. Math

    Describe an application for the use of ratios or proportions

  62. Business Ethics

    Neka Kiser, vice president of operations for Mountain National Bank, has instructed the bank’s computer programmer to use a 365-day year to compute interest on depository accounts (payables). Neka also instructed the programmer to use a 360-day year to

  63. sose

    what are some bad points about monarchy?

  64. Math

    YOu want to buy either secented lotion or bath soap for 8 people. The lotions are 46 each and the soaps are $5 each. Using alphabhat l for the number of lotions write an expresion for the total amount you must spend in terms of alphabhat l.

  65. BIOLOGY

    what does it mean when it is said that a prokaryote has biochemical versatility and genetic flexibility

  66. Calculus

    Limit as x goes to negative infinity of sqrt(x^2+3x)+x?

  67. maths

    they call me a man,but i will never have a wife.I was given a body,but not a life.they made me a mouth,but did not give me breath.water gives me life,but the sun brings me death! what am i ?

  68. history

    I am doing a school project about the real Pocahontas. I have found some info. thanks!

  69. social studies

    What are the factors of ocean currents? give four factors

  70. social studies

    give reasons (a)There are two high tides and two low tides (b)Warm currents produce amilder climate (c)There is a heavy rainfall in queensland but the atacama desert is arid (d)rich fishing grounds are located on the pacific coast of north america

  71. History

    1. COmment on what James Baldwin said of the Civil rights movement challenging the United States to rethink"What it really means by freedom, including whether freedom, applied to all Americans or to part of the population? This is what I put : With their

  72. english 3

    what symbols in "young goodman brown" show the theme, the rerlization that evil can affect those who seem up right

  73. physical

    branches of physical education

  74. health

    branches of health education

  75. math

    can u help me ... if these question are asked does it mean that we need to write the domain and the range ?? the questions are what are the elements of the doamin? what are the elements of the range?

  76. math

    Could you help me with this math? i don't know what is 2 gram equal to how much of a teaspoon. I'm trying to measure the granulated sugar. Thank you in advance.

  77. english

    Hi:)I don't know the term in english but I'll try to explain.Last week i had to teach a class in school.Now i need to write teaching plan.It is supposed to be a table with every detail what has happened in class.You know what i mean?Can you find some

  78. math

    how do tou add decimals?

  79. math help needed

    if x^3

  80. CHEMSTRY

    . A 25.0 ml sample of Ni2+ gave a weight height of 2.36 uA( corrected for a residual current) in a polarographic analysis. When 0.500 ml of solution containing 28.7 nmol of Ni2+ was added the wave height increased to 3.79 uA. Find the concentration of Ni2+

  81. SCIENCE!!!

    Explain how each of the following cell's structure is related to it's function Red blood cell- Nerve cel- Musle cell-

  82. Chemistry!!

    How do I go about doing this question? How much heat energy is involved when 5.58g of Fe metal reacts with excess oxygen to produce Fe2O3? Do you need the equation, and if so, what would tha be? Fe + O2 > Fe2O3? I don't think that is right though. And

  83. Chemistry

    In the Periodic Table, why does Group 2 and 17 bond together so easily? ~thanks

  84. law

    I have write a paper on a way to solve street racing and under age drinking using the COPPS philosophy and write a formal report to the chief of police. I have to use the S.A.R.A method (Scanning, Analysis, Response and Assessment) Can someone please help

  85. methodologies

    Compare points-of-service (POS) plans with maintenance organization(HMO) plans

  86. math need help please

    The area H of a triangle with base b and height h is given by H=1/2bh. Find the area when b=21m (meters) and h=38m.

  87. Science

    Is ice inorganic and why?

  88. health

    Can anyone help me find things on this question. I have to answer this and then if I think it is going to be realalistic.What are some other potential communication processes that may become available in the future for health care?Think in areas of records

  89. science

    Why do certain comets return at regular intervals?

  90. math

    Translate to an algebraic expression 50 multiplied by q

  91. math need help please

    Translate to an algebraic expression The product of 19% and some number

  92. NEED HELP REALLY BADLY!!! PLEASE!!!!

    Do you know what the words concnetrated means and like the difference between a concentrated soloution and a dilute souloution is?

  93. methodologies

    What is the importance of Blue Cross and Blue Sheild plans in the evolution of health care coverage

  94. Algebra

    Rod is a pilot for Crossland Airways. He computes his flight time against a headwind for a trip of 2900 miles at 5 hr. The flight would take 4 hr and 50 min if the headwind were half as great. Find the headwind and the plane’s air speed. Please help me