Questions Asked on
November 5, 2010

  1. physics

    A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?

    asked by DJ
  2. com/170

    write a paragraph explaining the key differences between the four types of writing. summary, analysis,synthesis, and evaluation.

    asked by lora
  3. Physics

    A rock is thrown from on a cliff with the velocity of 15 m/s at an angle of 30 degrees. it takes the rock 6.30 seconds to hit the ground. how high was the cliff?

    asked by Jay Kay
  4. Calculus

    N(t) = 650/1+649 e^−0.5 t (b) How many people will have heard the rumor after 4 hours? After 9 hours? (c) When will half the people have heard the rumor? t = (d) When is the rumor spreading fastest? t =

    asked by Erika
  5. Calculus

    for population in billions, where t is years since 1990: N(t) = 41/1+11 e^−0.1 t (b) According to this model, when will the earth's population reach 20.5 billion? During the year . How about 40.9 billion? During the year .

    asked by Erika
  6. Calculus

    The following table gives the percentage, P, of households with a television set that also have a VCR. (Unlike the data in your textbook, this data is ficticious). Year 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 % having VCR 0.2

    asked by Erika
  7. chemistry

    water has a molar mass weight of 18 grams that's 18 grams per mole you drink a 2 liter bottle of water everyday and you are such a smarty that you you know that 1mlof h2o weighs 1 gram can you tell me how many moles of water you consume a day

    asked by Anonymous
  8. math

    In the united states about one person in eight lives in Califonia. To the nearest percent, what percent of people in the united states live in California?

    asked by liiy
  9. math

    In the united states about one person in eight lives in Califonia. To the nearest percent, what percent of people in the united states live in California?

    asked by liiy
  10. chem 106 xtra credit!!**

    What is the chemical basis for the warning on household cleaners never to mix ammonia cleaners and bleach?

    asked by anonymous
  11. intro chem HELp please

    1. Zinc is often used to calibrate calorimeters because it undergoes a very sharp phase transition from the solid to the liquid at 419.5oC. Calculate the enthalpy change when 5 g of zinc metal is heated from 100oC to the point where the entire sample is

    asked by John
  12. history

    what three things did roosevelt say the country had to do to turn the economy around?

    asked by diana
  13. physical science

    Platinum has a density of 23.4g/cm3. What is its mass?

    asked by ashley
  14. Chem Help please

    Consider a system of 3 molecules, A, B, and C. Suppose the 3 units of energy can be distributed over the three atoms where each atom can have no energy, one unit, two units or 3 units of energy. Assume each of the 10 possible arrangements is equally

    asked by Melissa
  15. chem 106

    What is the chemistry of a fusible alloy, and how is one incorporated into an automatic sprinkler system?

    asked by alexandria
  16. Math 214

    Not sure my reasoning is correct. Here is the question: In a Nasa rocket firing, the probability of the siccess of the first stage is 95%, of the second stage 97% and of the third stage 98%. What is the probability of success for the three stage rocket? My

    asked by Vanessa
  17. math

    The 1st web is twice as larger the 2nd web and the 3rd web is 3in longer then the 1st web 18in

    asked by Dixie
  18. algebra

    simplify (-4x^6y)^5

    asked by Allena
  19. thermo

    equal masses of ice at 0 oC, water aat 50 oC and steam at 100 oC are mixed and allowed to reach equilibrium. what will be the final temp of the mixture? and what percentage is the water and what percent will be steam??

    asked by holly
  20. thermo

    equal masses of ice at 0 oC, water aat 50 oC and steam at 100 oC are mixed and allowed to reach equilibrium. what will be the final temp of the mixture? and what percentage is the water and what percent will be steam??

    asked by holly
  21. AED/200

    Write a 200-300 word response to the following: You've been presented with a variety of educational philosophies. You should be beginning to formulate your philosophy of education. What instructional philosophies will you incorporate into your classroom

    asked by Crystal
  22. chemistry

    Help!! Can someone please show me how to set up this problem. I'm lost. C3H8+5O2-->3CO2+4H20 If 19.2g of C3H8 and 19.2g O2 react, how many moles of CO2 can be produced?

    asked by josh
  23. 8th grade

    A store that personalizes shirts chargers $20 for a shirt plus $.75 for each letter. Write an algebraic expression for the cost os "t" shirts using "n" letter each.

    asked by jennifer
  24. chemistry

    21.00 mL of 0.200 M HBr is titrated with 0.351 M NaOH. What is the pH after the addition of 6.56 mL of the base ?

    asked by lizz
  25. college chemistry

    A solution of C6H5CO2Na hydrolyzes according to the equation. If the [C6H5CO2H] in the solution after hydrolysis is 0.00000294 M, calculate the equilibrium concentration of C6H5CO2Na. C6H5CO2-(aq) + H2O(l) = OH-(aq) + C6H5CO2H(aq) Kh=1.59×10-10 What does

    asked by sparkle
  26. English, Scarlet Letter

    "Roger Chillingworth's main objective is to revenge upon Dimmensdale and not redeeming himself by helping Hester." Is this a good thesis statement?

    asked by Nathan
  27. Alg & Trig 2

    find the sum of 1/2, 2/7x, and 5/x

    asked by Tiffany
  28. physics

    A 30 kg child slides down a playground slide at a constant speed. The slide has a height of 3.8m and is 7.8m long. using energy considerations, find the magnitude of the kinetic friction force acting on the child.

    asked by andrea
  29. ethics

    if you have a certain amount of work to do each day, and you can complete that work AND spend an hour on a social networking site, then why not? Why don't offices let their employees use social networking sites if their work is done?

    asked by Anonymous
  30. Contemporary Mathematics

    Given the set of data; 25, 15, 50,18, 42,36. find the standard deviation.

    asked by Renee
  31. ethics

    Another example of utilitarianism in the workplace would be an amoral stance on one's career, in this case. In order for them to get promoted they must sacrifice the time they spend with their family. Sure being mean to your family is morally wrong, but

    asked by Anonymous
  32. Alg & Trig 2

    find the sum of 1/2, 2/7x, and 5/x

    asked by Tiffany
  33. English

    Can someone please proofread my essay and help me fix and grammar errors I might have. Peyton Farqhar sacrificed his life he had courage, and a purpose. He had plans he was trying to achieve. Taking that into consideration then yes, he might be considered

    asked by Keisha
  34. English

    in a paragraph......details grow out of the major details and also give information about..... details. what are the best suitable words for these two blanks?

    asked by Sonia
  35. English

    if there are choices like (minor, major) or (major, minor) (topic, writer and information, topic) then what are the best two choices for this blank in a paragraph the.....details grow out the major details and also give the information about....details.

    asked by Sonia
  36. English

    what is the antonym of boor?

    asked by lilly
  37. English

    which of the following words cannot use the suffix -ive? reveal- decis- conclus- impress-

    asked by David
  38. English

    supporting details may refer to secondary points which may help to clarify choices are :points or all information of a paragraph, another name of main idea or the topic sentence? plz help me

    asked by Stella
  39. 12th grade

    small group that study bills

    asked by samantha
  40. physics

    A rock is dropped from a height of 130.0 meters. With what velocity does it land? How long does it take to fall?

    asked by Kevin
  41. Stats

    A car insurance company has determined that 7% of all drivers were involved in a car accident last year. The company randomly selects 200 drivers. Compute the mean and standard devistion of the random variable, x, the number of drivers involved in

    asked by Christine
  42. nath

    .05 % >,

    asked by liiy
  43. nath

    .05 % >,

    asked by liiy
  44. physics please help

    A golfer, driving a golf ball off the tee, gives the ball a velocity of +40 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 4.05E-3s. (a) What is the change in momentum of the ball? (b) Determine the average

    asked by jonathan
  45. Physics please help cant figure this out

    starting with an initial speed of 5.00 m/s at a height of 0.265 m, a 1.75 kg ball swings downward and strikes a 4.45 kg ball that is at rest, as the drawing shows. (a) Using the principle of conservation of mechanical energy, find the speed of the 1.75 kg

    asked by joseph
  46. physics please help me

    The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has

    asked by dan
  47. physics

    A person pushes a 11.0 kg lawn mower at constant speed with a force of 82.0 N directed along the handle, which is at an angle of θ = 45.0° to the horizontal.Calculate the normal force exerted vertically upward on the mower by the ground.

    asked by Anonymous
  48. 8th grade

    5[6-2(5-3>to the zero power)] Please help so confused answer = -20 or 100 idk please help !

    asked by Lulu
  49. calculus

    a suspenion bridge is in a shape of a parabola and has a length of 3000 feet between the uprights. the roadbed is 50 feet above the river and the lowest point of the curved cable is 25 feet above the road. if the height is 450 feet, how long is the

    asked by jared
  50. Geometry

    D is between C and E. CE=6x, CD=4x+8, DE=27. Find CE

    asked by Jonathan
  51. 11th grade Physics

    Consider a situation in which your car, when coasting down a straight downhill road, acquires a constant velocity. In this situation: a. gravity is the only force on the car b. friction is the only force acting on the car c. the net force acting on the car

    asked by Krys
  52. Math

    $1000 at 5% compounded continuously for 19 years?

    asked by Anita
  53. dynamic Decision making

    Using the concepts that you learned from the online explanation of control theory, describe the operation of a Subway sandwich shop. Be sure to describe the system using feedback loops and a detailed narrative.

    asked by jesse
  54. Dynamic decision making

    Discuss chaos in health care systems today. In addition, discuss the role of insurance and billing, HMOs, varying drug costs across borders, availability of doctors and nurses, and hospital management complexities. Be sure to support your analyses with

    asked by jesse
  55. math --slope and y intercept

    A funiture refinishing outlet pays its employlees $40 per day plus $10 per unit refinished. Write an equation to express an employees daily wage(w) in terms of units finished(x)

    asked by Brittany
  56. English

    what is the character porter in Act II Scene 3 trying to say with his puns?

    asked by kareena
  57. physics

    A rectangular block of ice 8 m on each side and 1.5 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. a) How high does the top of the ice block float above the water level? b) How many penguins of

    asked by Slice
  58. math-- please help

    A minor league baseball pitcher is hired for $700 per month plus $100 per game won. Write an equation to express his monthly earnings (e) in terms of games won (x).

    asked by Brittany
  59. answer

    1/m-m/2=6X+5/12

    asked by richard
  60. math

    what is the 14th root of (-2) to the 14th power? Thanks in advance

    asked by barb
  61. algbra1

    3x - 8 = -3x + 4 help me now asap!!!!

    asked by peaches
  62. math

    Using a calculator. show 14 broken key is 1 show 2 ways

    asked by kay
  63. tourism

    which aTourism gencies in Jamaica govern

    asked by Allison
  64. Biology

    The muscles of the heart are constructed out of: A) nucleotides B) complex carbohydrates C) cholesterol D) proteins Thank you.

    asked by Bee
  65. ethics

    whose philosophy suit for environmental issues?

    asked by lee
  66. math

    find the sum of the first 8th term of the Geometric progression, 1,3,9,27

    asked by Ali
  67. math

    in a Geometric progression the sum of the first and the second terms is 90 and the sum of the second and the fourth terms is equal to 30.find the sum of the first 8th term in the progression

    asked by Ali
  68. math

    If the sum of the first and the second terms of an infinite Geometric progression is equal to 3/8, and the sum of its term is equal to 1/2. find the common ratio of the first term of the progression

    asked by Ali
  69. literature

    the short story part 2

    asked by Anita
  70. Human Resource Management

    Select an industry or organization that has many occupational positions within it, such as the retail industry, the transportation industry, and a marketing organization

    asked by Anonymous
  71. literature

    The Novel if you cconsider the call of the wild to be an allegory which one of the following statements would be true?

    asked by Anita
  72. math

    a rubber ball fell from a high of 16 feet and then its rebounded until it rested, such that each time it rebounded to a high =1/2 the high rebounded to previouslly a) find the high rebounded to after the 10th term b)find the distance cover by the ball

    asked by Ali
  73. physics help

    The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The

    asked by danny
  74. literature

    poetry, part1 if this be error and upon me proved, I never writ, nor no man ever loved

    asked by Anita
  75. math

    in an arithmetic progression the 50th term is equal to 3, and the sum of the first 8th is equal to 23. find the first term and the common difference

    asked by Ali
  76. math

    In a Geometric progression the sum of its first 4 term is equal 15, and the sum of the next term is equal to 15/16. find its first term and its common ratio

    asked by Ali
  77. physics

    If the mass of a cart full of groceries decreases to half and, at the same time, its speed doubles, the momentum of the cart?

    asked by Anonymous
  78. anatomy and physiology

    A dog bites a large chunck of flesh from a man's leg. The large, open wound will likely heal bt the process of what?

    asked by Stacie
  79. anatomy and physiology

    What cellular process involves mitosis?

    asked by Stacie
  80. anatomy and physiology

    When you swallow a peanut, the peanut first comes in contact with the?

    asked by Stacie
  81. anatomy and physiology

    Which of the following processes is achieved through osmosis?

    asked by Stacie
  82. anatomy and physiology

    Which one of the following is an example of epithelial tissue?

    asked by Lisa
  83. chemistry

    How many mL of propyl alcohol are required to make a 6.50 % v/v aqueous solution in a 100 mL volumetric flask?

    asked by Anonymous
  84. Math

    1. Points Q,R,S, and T lie on a circle with center P. If the radius of the circle is 1, what is the value of PQ+PR+PS+PT? 2. If 10^ab= 10,000, where a and b are positive integers, what is one possible value of a? 3. In the plane, the line 2x-3y=c passes

    asked by Leslie
  85. science physics

    A cyclist is moving to the right at a constant speed. when he applies brakes what will happen? a -net force will be to left b- net force will be to right c- acting net force will be zero d -inertia will stop him

    asked by 7th grade
  86. calculus

    How do you find the derivative of y = xe^-2x?

    asked by Anonymous
  87. AED/200

    „h Answer the following: Taking either the constructivist theory of education or the behaviorist theory of education, write a 700-1,050 word paper in which you describe your ideals for effective classroom management. In separate paragraphs describe your

    asked by Crystal
  88. English

    Are there any websites about medieval attitudes about Jews? In google i mostly get websites about a book.

    asked by jenny
  89. physics

    suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 200N push? explain b. does the friction force make up the reaction force to your push?

    asked by Rebecca
  90. physics

    i apply an 800 N force to the crate a. how long would it take the crate to travel 20m across the warehouse floor(in the direction that i am pushing it)? b. what is the magnitude and direction of the force of friction acting on the crate?

    asked by Jane
  91. HUM/205

    Please post a 150- to 300-word response to the following question by clicking Reply. Using information from your textbook, list and describe three major events that took place during the Middle Ages that influenced the development of the arts. Choose 2

    asked by Crystal
  92. bilogy(genetics

    given the following genotypes GgWwTt and GgWWtt. what is the probability of producing an offspring with the following genotype? How do i solve this problem?

    asked by lou
  93. Accounting

    Bank granted a 10000$ nine months loan at 6% per year. How do we make Tat in journal entry.

    asked by Thara
  94. HUM/205

    Please post a 150- to 300-word response to the following question by clicking Reply. What is the relationship between spirituality and Gothic architecture? In what ways does Gothic architecture display this time period as an Age of Faith? What other

    asked by Crystal
  95. Contemporary Mathematics

    Below are the lengths (in minutes) of 12 phone calls made on an 800 line to a business on one day. Find the five number summary for this data. 14,6, 12, 19, 2, 35, 5, 4, 3, 7, 5, 8

    asked by Renee
  96. Business Communications

    Which statement presents a negative element in a positive way? (Points: 5) The part can be replaced at no charge only if your unit is less than two years old. If your unit is too old, you will have to pay $49 for a replacement part. We cannot replace the

    asked by lisa
  97. physics

    If you walk at 1 m/s down the aisle of a bus that is moving at 10 m/s along the road, how fast are you moving relative to the road when you walk toward the front of the bus? Toward the rear of the bus?

    asked by Anya
  98. calculus

    A bacteria culture starts with 900 bacteria and the population doubles every 4 hours. Find an expression for the number of bacteria after t hours.

    asked by Anonymous
  99. Grammar and Comp

    I am supposed to write a paragraph, and identify the adverbs by highlighting them. Then I have to identify the adjectives by underlining them. This is what I have come up with so far. I am just wondering if it is correct. The Verona Wildcats football team

    asked by JFer
  100. math

    please help with this radical: Thank you in advance. sqrt of 3a + 7*sqrt of 75a^3

    asked by barb
  101. Business Communications

    Which of the following statements about how the standard pattern for informative and positive messages should be applied is essential? Use all five of the elements of the basic organizational pattern. Present each element in a separate paragraph of its

    asked by lisa
  102. phy

    does the mass of the object have a direct effect on the buoyant force or does the volume? Which of the two has no affect on the buoyant force?

    asked by ami
  103. physics

    A 2.22 kg book is dropped from a height of +3.2 m. What is its acceleration? can you help?

    asked by Tim
  104. Grammar and Comp (repost)

    I have to identify the adverbs(in caps) and the adjectives (in parentheses) in this paragraph I wrote. Could someone please tell me if they are correct? The Verona Wildcats "football" team is an "amazing" team to watch "this" year. Their "bone-crushing

    asked by JFer
  105. english

    Need help with an assignment please.I am going to explain this to the class and I want to feel confident.Your help is appreciated. Its Allusion. I picked "Someone who perservers and never gives up." I have to identify what it means, and researh their

    asked by Lily
  106. Physics

    A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.9 atm to 4.80 atm. Assume the volume of the tank and the temperature of the gas remain

    asked by idwsh
  107. math

    can someone check my answer on this one? rewrite with rational exponents: (sqrt5mn)^9 i got: 5^9/2m^9/2n^9/2 is this correct?

    asked by barb
  108. Physics, PLEASE HELP!!

    A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?

    asked by ashley
  109. Physics

    A rock is thrown from on a cliff with the velocity of 15 m/s at an angle of 30 degrees. it takes the rock 6.30 seconds to hit the ground. how high was the cliff?

    asked by Jay Kay
  110. CHEM. help please

    Consider a system of 3 molecules, A, B, and C. Suppose the 3 units of energy can be distributed over the three atoms where each atom can have no energy, one unit, two units or 3 units of energy. Assume each of the 10 possible arrangements is equally

    asked by Melissa
  111. CHEM.

    Zinc is often used to calibrate calorimeters because it undergoes a very sharp phase transition from the solid to the liquid at 419.5oC. Calculate the enthalpy change when 5 g of zinc metal is heated from 100oC to the point where the entire sample is

    asked by Melissa
  112. Chemistry- need fast help! Thanks

    2 H2O (l) → 2 H2 (g) + O2 (g) What volume of water in gallons would need to be split to store the same amount of energy as found in 10.0 gallons of gasoline? (Gasoline contains 44.4 MJ/kg, or 32.0 MJ/L, and has a density of 0.72 g/mL where 1 L =

    asked by John
  113. U.S. Government

    Today we were asked this question in class. We were asked to ponder it over the weekend, but I'd like some views of others. If we don't believe minds are changed in deliberation, then how and why does the law change in these areas over time? Do we not get

    asked by Susie
  114. Chemistry

    What is the molarity of 350 mL of solution that contains 27 grams of CaCl2?

    asked by Becky
  115. Chemistry

    What is the molar mass of calcium acetate, Ca(C2H3O2)2?

    asked by Becky
  116. Chemistry

    What is the mass of 1.665 x 10 to the 22nd formula units of calcium acetate,Ca(C2H3O2)2?

    asked by Becky
  117. physics

    Forces as a vector Considering the results from table 2, are the component sums from table three close enough to zero to be considered valid? If no, what else may be affecting your results? the answer is no the results from the table are not close enough

    asked by annonomus
  118. College Chemistry

    Calculate the Molarity of the solution that contains 4.00 grams of NaOH in a total volume of 1500.0 mL. [Molar Mass NaOH = 40.00g, 1 Liter = 1000 mL]

    asked by stacy
  119. Chemistry

    What is the molarity of 350 mL of solution that contains 27 g of CaCl2?

    asked by Becky
  120. Statistics

    Are these statements true or false? 1. The sample mean, the sample proportion and the sample standard deviation are all unbiased estimators of the corresponding population parameters. 2. If the population is normally distributed with known variance then

    asked by help
  121. chemistry

    Could we use HCl instead in HNO3 in Volhard method?

    asked by darika
  122. a tale of 2 cities

    Whats the difference between a tale of 2 cities the book and the movie?

    asked by mandee
  123. analytical chemistry

    blank is used to dissipate the error brought about by impurities. What is the other reason of using blank in Mohr method?

    asked by emily
  124. Grammar

    What part of speech is the word surveillance in "surveillance camera"? Also what part of speech is video in "home video"? Are they just considered part of the noun, or do they modify the nouns they come before, making them adjectives?

    asked by JFer
  125. 10th grade

    What is the compound name fo HC2H3O2?

    asked by jhgjgk
  126. calculus

    A street light is at the top of a 15 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30 ft from the base of the pole

    asked by Nikki
  127. physics

    In a classic model, the electron of a hydrogen atom circles the proton at a radius of 0.052910−9m when it is in the n=1 state. What is its electric potential energy?

    asked by Maree
  128. ALGEBRA

    Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms first so, 1x+2 = 14;

    asked by Jessica 2
  129. Physics

    Charge 1 is 3 C , charge 2 is 15 C , the distance between the charges is 8 cm, and they are located in a vacuum. What is the magnitude of the electric potential (zero at infinity) at position *, i.e., exactly between the two charges?

    asked by Maree
  130. physics

    Two identical metal plates with small holes are aligned a distance L=7.8 cm apart. They have a potential difference of 127 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters

    asked by Maree
  131. Chemistry- volumn

    chemistry: 50mL HNO3 + 50.5mL HaOH = volumn?

    asked by Julia
  132. Calculus

    Use implicit differentiation to find the slope of the tangent line to the curve –2x^2–2xy–1y^3=–3 at the point (–1–1).

    asked by Trevor
  133. 7th grade

    give 2 other names for 2.5 dm measurement

    asked by nick
  134. Business Communications

    Which is an effective strategy for ending an informative letter to a new client? (Points: 5) Stress that the reader is welcome to call you anytime if more information is needed. Refer to your company's future relationship with the reader's organization.

    asked by lisa
  135. College Chemistry

    How many grams of BaCl2 are needed to make a 250mL of 15% solution?

    asked by Kim
  136. math

    find sqrt1575x^4. thanks in advance and is the answer 15x^2sqrt7

    asked by barb
  137. social studies

    what is the official language of the phillopines

    asked by nick
  138. ethics question

    Another example of utilitarianism in the workplace would be an amoral stance on one's career, in this case. In order for them to get promoted they must sacrifice the time they spend with their family. Sure being mean to your family is morally wrong, but

    asked by Anonymous
  139. ALGEBRA

    I have worked this problem out and just need confirmation. 15 + 2x - 5 = 130; 2x + 10 - 10 = 130 -10; 2x/2x = 120/2x; x = 60.

    asked by Jessica 2
  140. ethics question 2

    if you have a certain amount of work to do each day, and you can complete that work AND spend an hour on a social networking site, then why not? Why don't offices let their employees use social networking sites if their work is done?

    asked by Anonymous
  141. math

    At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 21 knots. How fast (in knots) is the distance between the ships changing at 3 PM

    asked by Rick
  142. reading

    was the marquis hung in the book?

    asked by mandee
  143. english

    Please correct my essy. 1) please tell me what to change/add. 2)please check my thesis/summary. 4)Is my intorduction good, cammos, sentenc structures. Thanks for the time u took to look at my essay. One of the most controversial issue in America is illegal

    asked by kelly
  144. AP Physics

    A 3kg object initially moving in the positive x-direction with a velocity of +5m/s collides with and sticks to a 2kg object initially moving in the negative y-direction with a velocity of -3m/s. Find the final components of velocity of the composite

    asked by Anonymous
  145. General Chemistry

    What is the molarity of OH- in a 5.78×10-3 M C6H5CO2Na solution that hydrolyzes according to the equation. C6H5CO2-(aq) + H2O(l) = OH-(aq) + C6H5CO2H(aq)

    asked by carly
  146. Math

    I understand generally how to solve, by taking natural logs and the the derivative, but i am confused by the presence of the 3 in front... if f(x)= 3(sin(x))^x, find f'(1) should i move 3 to the y side or take the natural log of it? Thanks!

    asked by Tokey
  147. science

    how are calcite and halite are the same

    asked by kevyn
  148. general chemistry

    I've been trying to solve these for while now, and i keep getting them wrong.... please help!! A solution of NH4Cl hydrolyzes according to the equation. If the [NH3] in the solution after hydrolysis is 0.00000508 M, calculate the equilibrium concentration

    asked by carly
  149. social studies

    what is the islamic civalazation

    asked by max
  150. chemistry

    Is the ritalin molecule a polymer?

    asked by Alex
  151. LITERARY DEVICES

    WHAT DOES "...RAGING FIRES..." MEAN?

    asked by HA
  152. Social Studies

    I need to learn about women everyday lifestyle for ancient phoenicia! Any help!?

    asked by Amu
  153. health

    When HIPAA requires auhtorization to disclose information the authorization must

    asked by Darren
  154. PHYSICS

    A sealed cubical container 26.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 15.0°C. Find the force exerted by the gas on one of the walls of the container.

    asked by john
  155. Physics

    A rigid tank contains 1.20 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 28.5 atm to 5.30 atm. Assume the volume of the tank and the temperature of the gas remain

    asked by Stacy
  156. high school,language arts

    How do you write a good first person monologue?

    asked by Amu
  157. english

    I went to the buffet six times, and I still saved room for dessert. A. SUBORDINATION B. COORDINATION C. RELIIOUS D. Secular

    asked by malik jackson
  158. Statistics

    An insurance company estimates 40 percent of its claims have errors. The insurance company wants to estimate with 90 percent confidence the proportion of claims with errors. What sample size is needed if they wish to be within 5 percent of the actual?

    asked by tom
  159. physics

    A novice skier, starting from rest, slides down a frictionless 31.0° incline whose vertical height is 123 m. How fast is she going when she reaches the bottom?

    asked by memo
  160. managerial economics

    mux/px=muy/py

    asked by ophelia
  161. Physical Science

    Explain why ionic compounds are formed when a metal from the left side of the periodic table reacts with a nonmetal from the right side. Give two examples of such compounds.

    asked by Brenda
  162. physics

    After fixing a flat tire on a bicycle you give the wheel a spin. (a) If its initial angular speed was 5.41 rad/s and it rotated 13.7 revolutions before coming to rest, what was its average angular acceleration?

    asked by aok
  163. Chem

    In an experiment 50 g of a metal was heated to 100oC and placed in 200 g of a liquid at 25oC. Which of the following combinations of metal and liquid will produce the largest temperature increase in the liquid? (Assume that there is no energy transfer to

    asked by Melissa
  164. English

    Why did Shakespeare intent hamlet to have an oedipal complex? I am thinking because to make the character interesting? :S

    asked by Joey
  165. Physics

    In its approach to an airport runway, an airplane of mass 1.24 x 10^5 kg has a velocity of 75.5 m/s [11.1 degrees below the horizontal]. Determine the horizontal and vertical components of its momentum.

    asked by Jordge
  166. math

    Solve the equation in the interval [0,2pi]. List all solutions tan^2(x)+0.8 tan(x)-3.84 = 0

    asked by applebottom
  167. US GOVERMENT

    REF TO DELAWARE, WHO WAS FOUNDER OF THE COLONY

    asked by erick
  168. Math

    The value of the digit in the thousandths place is equal to the sum of the measure of the angles in a triangle (180 degrees) divided by 30

    asked by JuliE
  169. algebra

    is (5/6,-2) a solution for -6x-7y=9

    asked by franklin
  170. Algebra

    Use the elimination method to solve the following system of equations. x + 3y – z = 2 x – 2y + 3z = 7 x + 2y – 5z = –21

    asked by Dorothy
  171. Business

    How can knowledge of the direct and indirect approaches help writers write “efficiently and effectively”?

    asked by Paul
  172. history

    Do you think Lincoln was a capable leader for the North and compare his leadership style to that of Jefferson Davis, President of the Confederate States of America? Who in your opinion was the better leader?

    asked by Misty
  173. US GOVERMENT

    When was the colony establised in America this is ref to Delaware.

    asked by erick
  174. Chem. thankss!!!

    1.0 mol of water (c=4.184 J/g.oC), 1.0 mol of ethanol (c=2.46 J/g.oC), 1.0 mol of carbon tetrachloride (c=0.861 J/g.oC), and 1.0 mol of ethylene glycol (c=2.42 J/g.oC) at 50oC were each placed into a separate coffee cup calorimeter and the temperature

    asked by Melissa
  175. algebra

    A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 6m from peak to eave and the attic space is 2cm high at the

    asked by Brandy
  176. accounting

    An employee earns $40 per hour and 1.75 times that rate for all hours in excess of 40 hours per week. Assume that the employee worked 60 hours during the week, and that the gross pay prior to the current week totaled $58,000. Assume further that the social

    asked by Anonymous
  177. Physics

    A nucleus, initially at rest, decays radioactivly, leaving a residual nucleus. In the process, it emits two paricles horizontally: an electron with momentum 9.0 x 10^-21 kg m/s [E] and a neutrino with momentum 4.8 x 10^-21 kg m/s [S]. In what direction

    asked by Jordge
  178. algebra

    when you look over an unobstructed landscape or seascape, the distance to the visable horizon depends on your height above the ground. The equation is a good estimate of this, in which d=distance to horizon in miles and h=height of viewer above the ground,

    asked by Brandy
  179. Chemistry

    2 H2O (l) → 2 H2 (g) + O2 (g) Using the thermodynamic values to calculate accurate values of ΔHr and ΔSr, will the reaction be product favored at high temperature? Why? Thank you

    asked by John
  180. Finance

    The CFO of your company has asked you to review an interest rate hedging proposal that aims to help reduce the organization’s interest expenses. Your review indicates that the organization has available $30MM in cash immediately, with a specific

    asked by Nicole Smith
  181. statistics

    20. Supply and Demand Let the supply and demand functions for butter pecan ice cream be given by p=s (q) = 2/5q and p= d (q) = 100 – 2/5 q where p is the price in dollars and q is the number of 10- gallon tubs. a. Graph these on the same axes. b. Find

    asked by Sean
  182. agebra

    Sam and Chris went to “Lots O Fun” to play laser tag and video games for Chris’s birthday. Sam played 3 games of laser tag, 5 video games, and spent $17 total. Chris played 4 games of laser tag, 7 video games, and spent $23 total. How much does one

    asked by Mariel
  183. math

    Explain, in complete sentences, how you would use the graphing method to solve the following system of equations. Provide the solution to the system and explain what the solution represents on the graph. x + 4y = –16 3x + 2y = 12

    asked by ashley
  184. diversity

    Elements of Classroom Management

    asked by tammy
  185. UW River Falls

    Calculate the enthalpy change, , for the process in which 40.0 of water is converted from liquid at 12.8 to vapor at 25.0.

    asked by Anonymous
  186. Math

    Make your own equation. 1. A number is 6 times another number. The sum of the two numbers is 56. @. Donna has twice as many coins as Cathy. When Donna gives Cathy 2 coins, they each have the same number. How many coins do they each have? Let the number of

    asked by Karen
  187. Physics

    The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.65 104 kg/s with an exhaust speed of 2.55 103 m/s. (a) Calculate the thrust produced by this engine. (b) Find the acceleration the vehicle had just as it lifted off the launch

    asked by Shaden
  188. Chem. only regarding formula.

    how do do calculate ΔHr and ΔSr?

    asked by Melissa
  189. Chemistry

    A rigid container of O2 has a pressure of 3.5 atm at a temperature of 713 K. What temperature would be needed to achieve a pressure of 6.0 atm?

    asked by Amber
  190. Chemistry

    Suppose a mixture of hydrogen and oxygen gas is exerting a pressure of 1.60 atm. If the partial pressure of oxygen in the mixture is 304 mmHg atm, what is the partial pressure of the hydrogen?

    asked by Amber
  191. Chemistry

    At 10 degree Celsius a sample of carbon dioxide gas has a volume of 25.5 mL under pressure of 758 mmHg. What would the volume of the CO2 sample be at STP?

    asked by Amber
  192. geometry

    n 1 2 3 4 5 6 ... n ... 20 f(n) 1 3 6 10 15 21...___...____ find the n term . thanks.

    asked by 000
  193. CALCULUS

    Use Newton's method to find all the roots of the equation correct to eight decimal places. Start by drawing a graph to find initial approximations. x^6 - x^5 - 6x^4 - x^2 + x + 8 = 0

    asked by Anonymous
  194. English

    1. I have just finished the work. 2. I just finished the work. 3. I finished the work just now. (What about the use of 'just'? Are the sentences all grammatical and the same?)

    asked by rfvv
  195. UW-River Falls

    Calculate the enthalpy change, for the process in which 40.0g of water is converted from liquid at 12.8 degrees C to vapor at 25.0 degrees C. For water, traingle Hvap = 44.0kJ/mol at 25.0 degrees C and s = 4.18 J/(g* C) for H2O (l)

    asked by Anonymous
  196. chemistry

    Write balanced reactions for the complete combustion of one mole hydrogen (coefficients do not have to be whole numbers) at 25 0C.

    asked by Anonymous
  197. English

    1. I have been to Japan before. 2. I went to Japan before. 3. I had been to Japan before. (Are they all grammatical? Is #1 the same as #2? Thank you.)

    asked by rfvv
  198. English

    I can't seem to remember this word. It's when someone ______ their anger at other people. all i can think of is the word exhort which is not the word I'm looking for, but i think it probably sounds similar. Could someone write some words down (it's sort of

    asked by Amy
  199. science-6th grade

    what is between the helium particles in a helium filled balloon?

    asked by charlie
  200. Chemistry

    Calculate the enthalpy change, for the process in which 40.0g of water is converted from liquid at 12.8 degrees C to vapor at 25.0 degrees C. For water, traingle Hvap = 44.0kJ/mol at 25.0 degrees C and s = 4.18 J/(g* C) for H2O (l)

    asked by Anonymous
  201. Chemistry

    Calculate the standard enthalpy change of the reaction ClO(g)+O3->ClO2(g)+O2(g)

    asked by Anonymous
  202. Chemistry

    Calculate the enthalpy change, for the process in which 40.0g of water is converted from liquid at 12.8 degrees C to vapor at 25.0 degrees C. For water, traingle Hvap = 44.0kJ/mol at 25.0 degrees C and s = 4.18 J/(g* C) for H2O (l)

    asked by Anonymous
  203. Physics

    How do you calculate the energy needed to heat 4 kg of water from 25oC to 45oC?

    asked by Angel
  204. Chemisty

    How many grams of ice at -6.1C can be completely converted to liquid at 27.4C if the available heat for this process is 4.60×10^3 kJ ? For ice, use a specific heat of 2.01J/(g*C) and traingle Hfus = 6.01kJ/mol.

    asked by Anonymous
  205. gravity

    A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R. What will its speed be when it is very far from the Earth? (Use any variable or symbol stated above along with the following as necessary: G for the

    asked by Anonymous
  206. Chem

    2 H2O (l) → 2 H2 (g) + O2 (g) Using the thermodynamic values to calculate accurate values of ΔHr and ΔSr, will the reaction be product favored at high temperature? Why? r stands for reaction

    asked by Melissa
  207. Science

    What is the formula for calculating density?

    asked by Isla
  208. Math

    Hi! I am just starting algebra in my class, and I do not get it. If s=10, then 5s=?

    asked by Janessa
  209. grade 1 math

    wat iz 15-7?

    asked by Ashely
  210. history

    what were the reasons our forefathers divided the government into three branches?

    asked by mel
  211. chemistry 12 lab

    We did a lab on equilibrium and this is one of the following questions: When Ag ions are added to FeSCN ions (which are red in colour), the colour disappears, and a white precipitate of AgSCN forms. The question is.. Explain why Fe can be used as an

    asked by cel