Questions Asked on
April 12, 2013

  1. Chemistry

    Calculate E°cell (in volts) for a fuel cell that employs the reaction between methane gas and oxygen to form carbon dioxide and water. (to 4 significant figures) ∆G⁰f for CH4 = -50.5 kJ/mol ∆G⁰f for CO2 = -394.4 kJ/mol F = 96485/mol e- I got

    asked by Anonymous
  2. Applied Calculus

    Find the absolute extrema of the function on the interval [2,3]. (Round your answers to the nearest hundredth.) Absolute Minimum ___ at x=___ Absolute Maximum ___ at x=___

    asked by Jacob
  3. trig

    an airplane has an airspeed of 430 miles per hour at a bearing of 135 degrees. the wind velocity is 35 miles per hour in the direction N30degreesE. Find the resultant speed and direction of the plane.

    asked by kayleigh
  4. College Chemistry

    For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter. Be careful of the algebraic sign here and remember that the change in temperature is equal to the final temperature minus the initial temperature. Report your answer using 4

    asked by Jose
  5. Chemistry

    How many grams of NaF should be added to 612 ml of 0.4 M HF (Ka = 6.8 x 10-4) to produce a buffer solution where pH = 3.10?

    asked by Ashley
  6. PHYSICS! I CAN NOT GET

    A group of swimmers is resting in the sun on an off-shore raft. They estimate that 2.5 m separates a trough and an adjacent crest of surface waves on the lake. They count 15 crests that pass by the raft in 15 s. How fast are the waves moving? ____m/s (I

    asked by Jessica
  7. math

    A student says that the solution of 375 = x – 28 is 347. Explain the student’s error and find the correct answer

    asked by manny
  8. Thermodynamics

    Suppose you start with a liquid mixture of 60% nitrogen and 40% oxygen. Describe what happens as the temperature of this mixture increases. Be sure to give the temperatures and compositions at which boiling begins and ends.

    asked by Tina
  9. PHYSICS/MATH

    A mass and spring are arranged on a horizontal, frictionless table. The spring constant is k = 450 N/m, and the mass is 5.4 kg. The block is pushed against the spring so that the spring is compressed an amount 0.35 m, and then it is released. Find the

    asked by HP
  10. Maths

    In triangle ABC, D is the midpoint of AC and E is the midpoint of AB. BD and CE are perpendicular to each other and intersect at the point G. If AB=7 and AC=9, what is the value of BC^2?

    asked by Ian
  11. Physics

    A small steel sphere of mass 0.40 kg is attached by a 0.50 m long cord to a swivel pin set into the surface of a frictionless table top. The sphere moves in a circle on the horizontal surface with a speed of 6.0 m/s. a.) what is the magnitude of the

    asked by Alex
  12. Life Orientation

    Identify one environmental or human factor that causes ill health,accidents,crises and disasters within any community within South Africa.

    asked by Boitumelo
  13. Calculus

    The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation P(x) = 100e^-0.001x f or 0 _< x _< 20,000. a. Find the revenue function, R. (Hint: R(x) = x(p(x)), since the

    asked by Wiz
  14. Math

    Lisa borrowed 8,000 on an 8% , 60 day note after 15 days she paid 2,000 on the note on day 45 she paid 1,000 on the note what is the total interest and ending balance due by the us rule of ordinary interest.

    asked by Rhonda
  15. Calculus

    The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation P(x) = 100e^-0.001x f or 0 _< x _< 20,000. a. Find the revenue function, R. (Hint: R(x) = x(p(x)), since the

    asked by Wiz
  16. calculus

    Find the volume of the solid generated by revolving the region about the given line. The region in the second quadrant bounded above by the curve y = 16 - x2, below by the x-axis, and on the right by the y-axis, about the line x = 1 I have gathered, that

    asked by Tiffany
  17. Statistics

    The lifetime of computer chips is approximately normal with mean 1.4×106 hours and standard deviation 3×105 hours. The statistics department has 5 computers built with that chip as the main component. What is the probability that all 5 computers last

    asked by Andy
  18. phy

    Doppler ultrasound is used to measure the speed of blood flow. If the speed of the red blood cells is v, the speed of sound in blood is u, the ultrasound source emits waves of frequency f, and we assume that the blood cells are moving directly toward the

    asked by kira
  19. Chemistry

    Using the given boiling points, predict which compound has the higher vapor pressure at a given temperature. A. ethanol (C2H6O, bp 78 degrees C) or 1-propanol (C3H8O, bp 97 degrees C) B. hexane (C6H14, bp 69 degrees C) or octane (C8H18, bp 125 degrees C)

    asked by Ryan
  20. U.S/history AP

    The War of 1812-also called the second war of American Independence or by opponents the dersive (----).U.S.declared war on Britain because they did not recognize our neutrality and interfered with our freedom of the(-----)shipping My answers are: --GREAT

    asked by joy
  21. ece

    On the Child Development Checklist, you've checked the item "Spends time watching others at play" for a preschool child in your group. Which of the following is the most likely reason for the child's behavior? A. The child needs the teacher's help to get

    asked by Anonymous
  22. chemistry

    Which of these processes will lower the glass transition temperature of a glass? Increase the cooling rate, Decrease the cooling rate, Increase amount of network modifier, Decrease amount of network modifier, Quench the glass to cool the surfaces quickly,

    asked by adex
  23. Spanish

    4. Fill in the blank with a correct expression with tener to express the following. She is hot. Ella ________. Answer: ella tienen calor 5. Fill in the blank with a correct expression with tener to express the following. She is cold. Ella ________. Answer:

    asked by Cassie
  24. Science Check answer

    Key: ☺ = My Answer! 1. The thermal energy of an object is _____. its potential energy its average kinetic energy ☺ its potential energy minus its kinetic energy its kinetic energy plus its potential energy 2. A device that can be used both for cooling

    asked by Jman
  25. chemistry

    Monosodium glutamate (aka MSG) NaC5H8NO4 is used as a food additive for flavor or as a preservative. a. what is the mass of MSG (g) that contains 545 mg sodium? b. calculate the percentage of each element present in MSG.

    asked by Jillian
  26. maths-

    if n is an odd positive integer, then prove that n^2 -1 is divisible by 8

    asked by anoynomous
  27. algebra :( help me!!

    The table below shows the weekly earnings of two groups of employees working part-time at a local grocery store. GROUP A: $245, $224, $218, $295, $214, $312, $284 GROUP B: $223, $230, $310, $246, $295, $301, $215 PART A: What is the mean for each group?

    asked by Alexandrea
  28. Chemistry

    The pH of an 0.0870 M solution of weak acid A is 2.20. The pH of an 0.0830 M solution of weak acid B is 4.07. The pH of an 0.0890 M solution of weak acid C is 5.13. Identify the three acids from among those listed below (the Ka values are listed in

    asked by Maddie
  29. phy

    At a factory, a noon whistle is sounding with a frequency of 484 Hz. As a car traveling at 77 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change in

    asked by kira
  30. Chemistry

    Consider the equilibrium 2NO (g) 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in

    asked by Anna
  31. Physics

    During a free kick at a soccer playoff game a 0.7 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 39.8 J. How fast was the ball booted by the player on the field?

    asked by Lawng
  32. chemistry

    Consider two glasses. Glass A has a composition of 5% CaO - 95% B2O3. Glass B has a composition of 15% CaO - 85% B2O3. Both samples are cooled from their molten state to room temperature at rates that result in an identical glass transition temperature.

    asked by adex
  33. conceptional physics

    If a 35cm radius tire spins at a rate of 72 rad/s what is the rotating speed?

    asked by donnell
  34. Chemistry

    If N2 is added to a balloon that contains O2 (partial pressure 450 mm Hg) and CO2 (partial pressure 150 mm Hg) to give a total pressure of 850 mm Hg, what is the partial pressure of each gas in the final mixture?

    asked by Ryan
  35. Chemistry

    An unknown amount of gas occupies 30.0 L at 2.1 atm and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?

    asked by Ryan
  36. Math - Please help

    I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer

    asked by Christopher
  37. Honors Math

    Please help! Malia incorrectly graph the equation y=2/3x+12 with a slope of 3/2. What should malia's corrected graph look like? The answers can be: A. Vertical B. Horizontal C. Less Steep D. More Steep P.S. The / doesn't mean divide in this equation. It is

    asked by Lizzy
  38. U.S/history AP

    -----------the act of bringing land into U.S.through agreemrnt of a majority of congress.Texas and hawai joined the U.S.in this manner. my answer:texas annexation-1845

    asked by joy
  39. Finance

    lisa borrowed $8000.00 on an 8%, 60 day note after 15 days she paid $2000.00 on the note , on day 45 , she paid $1000.00 on the note. What is the total interest and ending balance due by us rule by ordinary interest

    asked by Tim
  40. Calculus

    Estimate the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles. b. Sketch for yourself the graph of f and the rectangles. Is this left sum an overestimate or underestimate? Enter OVER or UNDER. c. Now use 5 right rectangles to

    asked by Daniel
  41. HELP URGENT Phyiics

    What mass (in grams) of steam at 100°C must be mixed with 446 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and

    asked by HELP
  42. Psychology

    The means of travel within and between neurons is different because: A. electrical signals move impulses within the neuron, while chemical signals move the impulses between neurons. B. chemical signals move the impulses within the neuron, while electrical

    asked by Angela
  43. Calculus

    The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+ãt/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of

    asked by Deeno
  44. Physics :(( help please TT

    You are a maker of hot air balloons and wish to construct a balloon that will lift you and a friend to places unknown. Your standard balloon design is a perfectly spherical, nylon fabric balloon with a small hole on the bottom for the burner that heats the

    asked by Ian
  45. PHYSICS/MATH

    What is your average power if you lift a 33.8 kg box at a constant speed to a height of 3.27 m in 6.10 s?

    asked by HP
  46. Chemisty

    Before solving the problem write a balanced chemical equation Excess aqueous NaI was added to 50 mL of aqueous CuNO3 solution, and 14.2 g of CuI precipitate was formed. What was the molar concentration of CuNO3 in the original solution? Answer in units of

    asked by Nick
  47. HELP Physics

    The average rate at which energy is conducted outward through the ground surface in a certain region is 30.9 mW/m2, and the average thermal conductivity of the near-surface rocks is 3.11 W/m·K. Assuming a surface temperature of 9.48°C, find the

    asked by Shane
  48. Psychology

    Dr. Lange is a developmental psychologist. He specialized in cognitive development during the period of infancy. Like most psychologists who focus on specific periods of development, his studies: A. emphasize the chemical changes in the synaptic gap. B.

    asked by Angela
  49. chemistry

    Please mark below all of the statments that correctly describe the physical properties of glass. Glasses do not have slip systems.Glasses consist of both covalent and ionic bonding.Glasses are brittle at room temperature.Glasses are amorphous and have no

    asked by adex
  50. physics

    A coil consists of N=105 turns of wire wrapped uniformly around a plastic torus. The inside radius of the torus is r0=0.12 m and the outer radius is r1=0.14 m. Thus, each winding has a diameter d=0.02 m. What is the self-inductance (in H) of this coil?

    asked by dd
  51. ece

    Studies of children throwing have revealed that two- and three-year-olds A. throw while stepping forward with the opposite foot. B. throw with body rotation and full arm range. C. are unable to throw a ball of any size. D. throw mainly with their forearms,

    asked by Anonymous
  52. computer programing

    Car A, with a mass of 1250 kg, is traveling at 30 m/s to the east. A truck with mass of 2000 kg, traveling to the west at 25 m/s. An inelastic collision occurred, not sticking together, the car goes off 10 m/s to the west. What is the resulting velocity of

    asked by Amandos Leonard
  53. Phyics

    In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a

    asked by HELP PLEASE
  54. math

    I have a box of tiles 12" x 12" - how many tiles will I need for a 9 foot x 12 foot room?

    asked by Anonymous
  55. Physics multiple choice

    3. What are the units for Coeffecient of Lift? [kgm^-3] No units [Ns] [N^2] [N] [ms^-1] [kg] 4. What are the units for the ratio Lift to Drag? [Ns] [kgm^-3] No units [ms^-1] [kg] [N^2] [N]

    asked by John
  56. Maths

    Find the number of positive integers

    asked by Ian
  57. english

    WRITE the adverb form that correctly completes the sentence. Hawks resemble falcons (close) of all birds.

    asked by sam
  58. interpersonal communication

    Self-concept is changed through interpersonal communication

    asked by amy
  59. science

    using the punnet square one trait is Dd and the other id dd. 1) does the mother or father in a have dimples b) what percentage of children are likely to have dimples i think for a: it is the father because of the D so that it dominant and b:50 because two

    asked by Anonymous
  60. Psychology

    Behavioral geneticists and evolutionary psychologists emphasize: A. environmental influence on development. B. the role of personality in development. C. the significance of hereditary factors in development. D. the importance of parenting skills in

    asked by Angela
  61. L>O

    provide recommendation on how to address the topic that you identified in the previous question(HIV and AIDS)

    asked by tsundzuka
  62. Psychology

    Behavioral geneticists and evolutionary psychologists emphasize: A. environmental influence on development. B. the role of personality in development. C. the significance of hereditary factors in development. D. the importance of parenting skills in

    asked by Angela
  63. Science 8

    Kinetic energy increases as a. mass increases and velocity decreases b. mass decreases and velocity increases c. both mass and velocity increase d. both mass and velocity decrease

    asked by Anonymous
  64. physics

    A boat is traveling on a bearing of 25 degrees East of North at a speed of 4 knots (a knot is 1.852 km/h). After traveling for 3 hours, the boats heading is changed to due South and it travels for an additional 2 hours at 5 knots. Using a Vector diagram,

    asked by Chad
  65. english

    4. Identify what is wrong with the following sentence: “Not realizing that there was a hole in the tire”. Then, revise the sentence in order to correct the problem and discuss the changes you have made.

    asked by Shorty
  66. Statistics

    You have spent a very long time training your dog to open the refrigerator and bring you a drink when you ask him to. Since your pet can’t read, his selection of the specific type of beverage he brings is completely random – although you notice that,

    asked by simone
  67. physics

    Calculate the number of H2O molecules in a human body of mass 50.6 kg. Assume that, on average, water makes up 62% of the mass of a human body. (Use 1.0 u for the atomic mass of hydrogen, and 16.0 u for the atomic mass of oxygen.)

    asked by kira
  68. child daycare

    1. A _______-centered program is most helpful to the children served. A. family B. child C. school D. parent 2. The vision and goals of an afterschool program should be translated into a A. preprietorship. B. parent letter. C. newsletter. D. mission

    asked by R.M.K
  69. physics

    Compare the total magnetic energy in two solenoids, each with N turns, area A, and current I, but length x and 2x. Denote Ux the total magnetic energy in the solenoid with length x, and U2x the one in the solenoid with length 2x. What is U2x/Ux?

    asked by dd
  70. Science

    A car weighing 24,500 Newtons is traveling east and travels a distance of 100 meters in 20 seconds. What is the car's mass? What is the car's kinetic energy?

    asked by Lele Reynolds
  71. physics

    Consider the process of charging a parallel plate capacitor with circular plates of radius R=5 cm separated by a distance d=0.2 cm. At some time t1, the capacitor is being charged with a current I=0.075 A. Consider a point P on the plane which is equally

    asked by dd
  72. physics

    Consider a circuit with an RL series with L=0.09 H and R=0.05 Ohm. At t=0 the circuit is connected to a battery which provides V0=12 V. (a)How long does it take to the current to equal a fraction 0.95 of the steady state current? (b) What is the energy

    asked by dd
  73. ece

    It's difficult for a young child to experience true empathy until he or she A. reaches the age of 8. B. is able to see things from another person's perspective. C. has been taught about it by his parents. D. has experienced difficulties himself.

    asked by Anonymous
  74. problem solving

    ou are completing the final exam in your class. Your instructor’s assignment instructions state that you may only use the following resources: library books, class notes, texts, and the instructor. You and your roommate discussed one of the questions,

    asked by ashley
  75. Chemistry

    Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

    asked by Paxton
  76. Calculus

    Use 5 right rectangles to estimate the area of the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?

    asked by Molly
  77. Pre-calculus HELP PLEASE !

    Find the coordinates of the center of the ellipse represented by 4x^2 + 9y^2 – 18y – 27 = 0. For 2x^2 + xy + 2y^2 = 1, find , the angle of rotation about the origin, to the nearest degree. Find the distance between points at (–1, 6) and (5, –2).

    asked by Becca
  78. Calculus please help !

    Find the coordinates of the center of the ellipse represented by 4x^2 + 9y^2 – 18y – 27 = 0. For 2x^2 + xy + 2y^2 = 1, find , the angle of rotation about the origin, to the nearest degree. Find the distance between points at (–1, 6) and (5, –2).

    asked by Becca
  79. personal

    Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

    asked by jos
  80. LIfe Orientation

    suggest 5 recommendation on how to address the air pollution

    asked by Beverlyn
  81. chemistry

    A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens approximately the size and shape of credit cards are soaked for the same amount of time at 850degreeC. Sample A is soaked in NaCl

    asked by adex
  82. science need help

    using the punnet square one trait is Dd and the other is dd. 1) does the mother or father in a have dimples b) what percentage of children are likely to have dimples i think for a: it is the father because of the D so that it dominant and b:50 because two

    asked by Anonymous
  83. Psychology

    According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

    asked by Angela
  84. ap chemistry

    The volume of 0.100 mol of helium gas at 34°C is increased isothermally from 1.00 L to 4.50 L. Assuming the gas to be ideal, calculate the entropy change for the process.

    asked by sarah
  85. math

    Problem #1: Find the total amount if you deposit $500 at a rate of 5% for two years using simple interest. Year 1 Year 2 Problem #2: Find the total amount if you deposit $300 at a rate of 6% for three years using simple interest. Year 1 Year 2 Year 3

    asked by Boobear
  86. U.S/history AP

    The french and indian war began in the colonies in the year 1754 and ended in the year 1763 in the colonies,the main reason for conflict between the french and colonists was over the Ohio river valley.After this war the english began the practice of --

    asked by joy
  87. chemistry

    What is the difference between e/z notation and cis-trans isomerism?

    asked by black_widow
  88. please help! precalculus

    Let f(x) = 6.4 sin(x) -6.6 cos(x). What is the maximum and minimum value of this function? report answers accurate to 4 decimal places

    asked by anonymous
  89. precalculus PLEASE HELP!!

    Rewrite 4 sin(x) -1 cos(x) as A sin(x + phi) A= phi= -pi less than phi less than pi

    asked by anonymous
  90. math

    solving with elimination 7x-4y=13 2x-5y =-4

    asked by anatoliy
  91. MATHS!!!Please HELP..:'(

    Raj and Vikram are two travelers in ancient India, walking along the Silk road. On the first day of travel, Raj travels 5 yojanas, and on each successive day travels 3 yojanas more than the previous day. Vikram started at the same place and travels the

    asked by Oian
  92. math

    solving with elimination 7x-4y=13 2x-5y =-4

    asked by anatoliy
  93. physics

    A technician at the top of a 200m tall radio tower drops her hammer. how much time does it take for the hammer to strike the ground?

    asked by jasmine
  94. ece

    When a child is assessed as being able to give a possession to someone else, the teacher would record that the child has achieved the prosocial behavior of A. empathy. B. caregiving. C. generosity. D. cooperation

    asked by Anonymous
  95. Math

    Jeff earns 1200 per week and has 4 deductions what is his net pay

    asked by Rhonda
  96. maths- urgent

    show that √Π+1 is irrational if there is any proof

    asked by anoynomous
  97. physical science

    How much energy is stored in a 9V battery rated at 10 A hour?

    asked by jake
  98. Biology

    Consider this pathway: signaling ligand ¨ G protein-coupled receptor ¨ G protein ¨ adenylyl cyclase ¨ cAMP. Identify the second messenger. Answer: A)G protein B)GTP C)adenylyl cyclase D)cAMP

    asked by Sasha
  99. maths- urgent

    what is the value of sin18degree-sin66degree+(root3/2)

    asked by anoynomous
  100. environmental science

    is plastic use is more hazarduous or wood use in relation to their environmental impacts? kindly give me a detailed answer

    asked by ejaz
  101. Algebra

    In 2000, in Country A, the average family net worth was $410,000, and there was about 6.1 x 10^7 families. Calculate the total family net worth Country A in 2000. Country A's total family net worth is what in dollars?

    asked by Jamal
  102. chemistry

    A student needs to use a 0.750 mol sample of (NH4)2SO3 for an experiment: a. how many grams does she need to weigh out? b. how many formula units are in the sample?

    asked by Jillian
  103. math literacy

    calcuate your answer in simplest form 350-(21+11)

    asked by miso
  104. Stats

    A game is played where a biased coin is flipped. A head is twice as likely as a tail. It costs $5 to plat the game and if a head occurs you win &7 but if a tail occurs you pay $3 which of the following is correct? The game is fair The expected valve of net

    asked by Varonica b. Miller
  105. LIfe Orientation

    critically discuss 8 ways in which the environmental problem impact on the within your country with South Africa

    asked by Beverlyn
  106. LIfe Orientation

    what recommendations can I address on the air pollution

    asked by Nicole
  107. car!

    Which one of these statements is true about a "bumper-to-bumper" warranty. A. Normal wear and tear is NOT covered by the warranty. B. All expenses except gasoline and routine oil changes are covered by the warranty. C. Every part and system is covered

    asked by carrie
  108. maths

    There is an auction for a house, with a List Price of $100K. There are only two bidders, who bid randomly, one after another. Their bids are in the $0 to $100K range. They don’t know what the other person bid (even if they did, it wouldn’t matter cause

    asked by nkm
  109. Math

    Help if you can! Thanks! Appreciate it! The length of one side of a square is approximately 181 inches. Which could be the length of one side of the square? A. 13.5 inches B. 19 inches C. 90.5 inches D. 109 inches

    asked by MidsummerNight'sDream
  110. Math

    Help please! I would greatly appreciate it! Sarah is making pillows. She uses 2 1/3 yards of fabric to make 5 pillows. How many yards of fabric will Sarah use to make 20 pillows? A. 6 1/3 yd B. 9 1/3 yd C. 17 1/3 yd D. 42 6/7 yd P.S. Thanks!

    asked by TheTempest
  111. Psychology

    According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

    asked by Angela
  112. Psychology

    Good day , please can you assist me with answering the following questions. There is a short paragraph describing a young man who has OCD symptoms. the questions are as follows "According to the DSM -IV diagnostic categories what diagnosis might you give

    asked by CATHY
  113. Psychology

    Information which comes to a neuron must arrive through its: A. axons. B. glial cells. C. prefrontal area. D. dendrites. I believe it is D..

    asked by Angela
  114. Calculus

    Find the equation of the line tangent to F(x) = xe^-x at the point where x = 0. What does this tell you about the behavior of the graph when x = 0?

    asked by Tima
  115. Math

    Needing help! Oliver made a pizza that was the same size as the pizza pan he used. The area of the pizza pan was 16(pie sign) square inches. What will be the circumference, in inches, of his pizza? A. 4 (pie sign) inches B. 8 (pie sign) inches C. 16 (pie

    asked by AsYouLikeIt
  116. Psychology

    According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

    asked by Angela
  117. chemistry

    Which of the following statements describes why ion exchange of 99% SiO2 - 1% B2O3 in a salt bath of molten postassium chloride (KCl) is not an effective way to increase the surface strength of the glass sample? a -The ion exchange works correctly, however

    asked by adex
  118. Psychology

    Danette knows she is not at all like her parents. She could never be like them. She is her own unique person. Her style of dress, mannerisms, and language emphasize her uniqueness. According to Erkison, Danette is attempting to establish: A. permanence. B.

    asked by Angela
  119. Psychology

    Four weeks from conception, cell division: A. begins to slow down. B. has resulted in an embryo which is 10,000 times larges than the zygote. C. creates a zygote. D. moves to the fetal period. I believe it is B

    asked by Angela
  120. U.S/history AP

    The Revolutionary war- began with the battle of Lexintgton and Concord in 1775 and ended in the year 1783 with the signing of the treaty of paris .American troops were commanded by-----------. my answer: George Washington right?

    asked by joy
  121. Biology

    The body of multicellular animals (salamanders, frogs and so on) is made of more than hundred different kinds of somatic cells. Even though they’re so different, they all have the same genome (the same DNA, the same set of genes). This is called genomic

    asked by S
  122. physical geography

    given the temperature of 27 degrees celsius on a climograph was is the averge monthly prepicipation 24.4 cm

    asked by denise
  123. SCIENCE ASAP please

    1. Density is the relationship between ____. (1 point) mass and volume cubic centimeters and pounds weight and volume grams and mass 2. Which of the following is NOT a possible sign of a chemical change? (1 point) a change in state a change in color the

    asked by Delilah
  124. URGENT LANGUAGE ARTS URGENT~!

    Which answer explains why there isn’t a hyphen between well and behaved in the following sentence? The students were so well behaved that Ms. Irvin dismissed them early. (1 point) The words well and behaved don’t end in -ly. The words well and behaved

    asked by Gabby
  125. physics

    What is the maximum current allowed in a 7.5 W, 300 resistor?

    asked by Noah
  126. chemistry

    How many moles of sodium hydroxide are needed to react with 148.0 g of Iron (III) bromide?

    asked by Taylor
  127. URGENT language arts question~!

    Which of the following compound words is spelled incorrectly? (1 point) afternoon teamate masterpiece earring My Answer: 1)B Is this correct? .

    asked by Gabby
  128. Calculus

    The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0

    asked by Deeno
  129. Calculus

    The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0

    asked by Deeno
  130. math

    solving with elimination 7x-4y=13 2x-5y =-4

    asked by anatoliy
  131. math

    how to solve this problem ln(x-4)=-3

    asked by teresa
  132. Life Orientation

    Identify 5 ways in which environmental or ill health factor impacts on community

    asked by Anonymous
  133. Calculus

    Use the Evaluation Theorem to find the exact value of the integral ç^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.

    asked by Sasha
  134. math

    how to go by doing a personal cash flow statement is it like the regular budgetfor your house.

    asked by dean
  135. Maths-trig

    Prov that 1-sin2X/sinX-cosX=sinX-cosX

    asked by Neo
  136. algebra

    (1)√x-a/x-b + a/b = √x-b/x-a + b/a, b not equal to a, then value of x is (2) if x = 2√24/√3+√2 then value of x+√8/x-√8 + x+√12/x-√12 . (3) if a = 2+√3/2-√3 & b = 2-√3/2+√3 then value of (a square + b square + ab) =

    asked by chandrakant
  137. Pre-Calc

    How do I solve this via partial fraction decomposition? (x^2+9)/(x^4-2x^2-8)

    asked by Micki
  138. Calculus

    An animal population is increasing at a rate of 150+20t animals per year. By how much does the animal population increase between year 5 and year 8?

    asked by Bryan
  139. Chemistry

    Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

    asked by Paxton
  140. Chemistry

    Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

    asked by Paxton
  141. chemistry

    A sample of hematite Fe2O3 has the mass 4.83 x 10 3 kg. a. how much iron (kg) can be extracted from this sample of hematite? b. what is the percentage of iron in this ore?

    asked by Jillian
  142. Calculus

    Estimate the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?

    asked by Molly
  143. Maths

    Triangle ABC has lengths AB=14, AC=18 and also a given angle of ∠BAC=30∘. What is the area of triangle ABC?

    asked by Ian
  144. maths

    Find the number of positive integers

    asked by rohit
  145. maths- plseee urgently

    value of sin18degree-sin66degree+sin60 degree

    asked by anoynomous
  146. life orientation

    3 environmental health hazards that cause ill health,crises,and or disasters globally

    asked by velile
  147. English

    Having problems with a introductory sentence. Its a essay on dying and living. I wrote a question to start my intro. Sentence. Or I wrote The professor died in 1974 of Cancer. Someone please let me know if I started out right. Please

    asked by Mike
  148. physics

    A bead of mass m = 40.5 kg is released from point A which is located 5 m above the ground and slides on the frictionless track as shown in the figure. Determine the beads speed when it reaches point C which is located 2.0 m above the ground.

    asked by robert
  149. Math

    Please help if you will! (-5)x7-6+8 A. -49 B. -45 C. -33 D. -25 P.s. Thanks for the help!

    asked by MuchAdoAboutNothing
  150. Physics

    Consider a regular pyramid charged with constant volume charge density. The potential at point P, the top of the pyramid is 1V. What would be the potential at point P if we removed the top part, so the pyramid is instead truncated at a height h=0.6H? Hint:

    asked by Ian
  151. maths

    if n is any integer ,then in is (a) i,(b) 1,-1 (c) i,-i (d) 1,-1,i,-i

    asked by simran
  152. Calculus

    Find the derivative for the following: a. y = x^2 e^x b. y = (e^x + 2)^3/2 c. y = e^-3x d. y = (e^x-e^-x)/2

    asked by Nuru
  153. algebra

    (1)√x-a/x-b + a/b = √x-b/x-a + b/a, b not equal to a, then value of x is (2) if x = 2√24/√3+√2 then value of x+√8/x-√8 + x+√12/x-√12 . (3) if a = 2+√3/2-√3 & b = 2-√3/2+√3 then value of (a square + b square + ab) =

    asked by chandrakant
  154. Calculus

    Find the volume using the shell method - about the x-axis x=y^2/3

    asked by Tiffany
  155. Calculus

    The velocity of an object t seconds after it started moving is t(t-6). Find the total change in the object's position in the 6th second.

    asked by Katie
  156. Maths

    Let N=1!⋅2!⋅3!⋅4!…9!⋅10!. Let 2^k be the largest power of 2 that divides N. What is the value of k?

    asked by Ian
  157. Biology

    Humans have about 20,000 genes in our genome. Explain how cells differentiate into different kinds of cells even though they have the same set of 20,000 genes in their nuclei, so they are genetically identical.

    asked by Student
  158. Maths

    Two players each flip a fair coin. The probability that they get the same result can be expressed as ab where a and b are coprime positive integers. What is the value of a+b? Dont get the a+b :(

    asked by Ian
  159. physics

    Just wanted to say a quick thanks to Steve and Damon, figured it all out, thanks guys, awsome!!!

    asked by Chad
  160. 8th Grade Math

    I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer

    asked by Christopher
  161. U.S/history AP

    ----------After TX achieved independence they wanted to be brought into U.S.Because it would upset the balance of free and slave states that not happen until 1845. In 9 years between independence and entering the U.S.they were a socerign nation called

    asked by joy
  162. maths- urgent

    show that √Π+1 is irrational

    asked by anoynomous
  163. Help Needed! Precalculus

    Find all solutions to cos(8alpha)-cos(2alpha)=sin(5alpha) on 0 less than or equal to alpha less than (2pi)/3

    asked by anonymous
  164. Psychology

    __________ serve as the cytoskeleton of the brain. They support the function of neurons by insulating, repairing, and nourishing them. A. Glial cells B. Dendrites C. Axons D. Cell bodies i say it A

    asked by Angela