Questions Asked on
May 11, 2011

  1. Physics HELP!

    You are at the controls of a particle accelerator, sending a beam of 3.90×10^7 m/s protons (mass m ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the

    asked by Allison
  2. Chemistry

    A 0.1873 g sample of a pure, solid acid, H2X was dissolved in water and titrated with 0.1052 M NaOH solution. The balanced equation for the neutralization reaction occurring is H2X(aq) + 2NaOH(aq) ¨ Na2X(aq) + 2H2O(l) If the molar mass of H2X is 85.00

    asked by Lauren
  3. stats

    A company with a large fleet of cars found that the emissions systems of 18 out of the 65 randomly selected cars they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance?

    asked by Erica
  4. physics

    Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q

    asked by ashley --- HELP PLEASEE!!!
  5. Physics

    A bullet moving with a speed 150 m/s strikes a tree and penetrates 3.5 cm before stopping. Find the magnitude of its acceleration and the time taken to stop.

    asked by Addie
  6. Chemistry

    Given: solubility (g/100g H2O) temp degrees celcius KBR 20 65 40 80 60 90 80 100 100 110 A solution containing 10.5g of KBr in 10g of H2O at 100 degrees celcius is cooled to 40 degrees celcius. A)calculate the g/100g H2O of KBr B)is the solution saturated

    asked by Curlyqty
  7. Chem

    which substance cannot be decomposed by a chemical change? carbon dioxide, methane, carbon monoxide, or carbon

    asked by Anonymous
  8. Physics

    If a projectile has a launching angle of 52 degrees about the horizontal and an initial speed of 18 m/s, what is the highest barrier that the projectile can clear?

    asked by Addie
  9. physics

    If the pendulum’s length is 2.00 m and ag =9.80 m/s , how many complete oscillations does the pendulum make in 5.00 min? the answer is 106 but how do i find it !!

    asked by Anonymous
  10. physics

    Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q

    asked by ashley --- HELP PLEASEE!!!
  11. chemistry

    sodium sulfide and cadmium nitrate undergo a double displacement reactions as shown by the following equation Na2S cd(NO3)2 -> 2NaNO3 CdS What is the mass, in milligrams,of cadmium sulfide that can be made from 5.00mg of sodium sulfide?

    asked by pat mcdole
  12. Chemistry

    Calculate normality of normal saline at 0.85%?

    asked by Mya
  13. physics

    juana slides a crate along the floor of the moving van the coefficient of kinetic friction between the crate and van floor is 0.120 the crate has a mass of 56.8 kg and juana pushes with horizontal force of 124 N. if 74.4 J of work are done on crate and the

    asked by Mark
  14. physics

    Two electrostatic point charges of +30 μC and +25 μC exert a repulsive force of 200 N on each other. What is the distance between the two charges?

    asked by ashley --- HELP PLEASEE!!!
  15. geomerty

    The following triangles, Ä ABC and Ä DEF, are congruent. abc 67.38degree 12cm lenght 22.62degree b5cm,l,13cm Find the lengths of all missing sides and measures of all angles for both triangles. Include correct units with each of your answers. First

    asked by kozy
  16. math

    Write a paragraph proof. Given: AC bisects

    asked by casper
  17. maths

    a pendulum 45 cm long swings through a vertical angle of 30 degree.find the height through which the pendulum bob rises.

    asked by akeb
  18. Grammar

    Determine if the following sentences employ the correct use of commas and apostrophes. True correct False wrong 1. Child's initial exam shows a furious, robust, fighting infant who is moving his head well. Answer: True

    asked by Leslie
  19. physical science

    If the force moving an object point's at least partially in the opposite direction of the object's motion, the work is considered to be what

    asked by Jerrell
  20. Grammar

    Determine if the following sentence employ Correct use of Commas and apostrophes.True=correct False=wrong 1. The child was initially started on ceftriazone, but developed a rash and was therefore changed to chloramphenicol. Answer: TRUE nedd the comma

    asked by Leslie
  21. government

    the federalist papers were written to what? win support for the constitution in new york expose the lack of civil liberties protected in the constitution urge ratification of the constitution in virginia condemn the constitution for the absence of any

    asked by tom
  22. physics

    Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 µC and -6 µC respectively. The charges on the lower left and right corners are -2.4 µC and -9 µC respectively. The net

    asked by ashley --- HELP PLEASEE!!!
  23. Grammar

    Determine if the following sentences employ the correct use of commas and apostrophes.TRUE=correct FALSE=incorrect 1. After discussing the woman's current diagnosis with the other doctors', it was recommended that the patient undergo a cholecystectomy.

    asked by Leslie
  24. poetry

    what is the meter in the poem "Me"by Walter de la Mare?

    asked by maria
  25. p

    An explosion breaks a 10 kg object (originally at rest) into two pieces, one of which is two times the mass of the other. If 8000 J is released in the explosion, a) how fast are the pieces moving away from their original location? b)how much kinetic energy

    asked by ryan
  26. Grammar

    Determine if the following sentences employ the correct use of commas and apostrophes.True=correct False=wrong 1. The wound was copiously irrigated with normal saline, and the musosal flap was replaced to its appropriate position. Answer: I think the comma

    asked by Leslie
  27. Grammar

    Determine if the following sentences employ the correct use of commas and apostrophes. True=correct False=wrong 1. The child was alert upon awakening, nonetheless we felt a full workup was best at this time. Answer: True Looks good to me - flows nice.

    asked by Leslie
  28. math

    if a and b are acute angles, sin(a+b)= 56/65, and sin b = 5/13, find sin a

    asked by giddy
  29. physics

    one ball is dropped off a cliff. A second ball is thrown down 1 second later with an initial speen of 40 ft/sec. How long after the second ball is thrown will the second ball overtake the first?.

    asked by Eric
  30. Chemistry

    Identify the acid or base behavior of each substance in this reaction: H2PO4 + H2O H3O+ + HPO4-

    asked by Rachael
  31. Geometry

    Find the lateral area and surface area for a right cone whose slant height forms a 45 degree angle with the base whose radius is 8 mm.

    asked by Mary
  32. Identifying patterns

    If the pattern of polygons continues, how many sides will polygon 98 have? and there is a picture of polygon 1 which is a 3-sided triangle polygon 2- which is is a sqaure polygon 3- which is a 5 sided pentagon. polygon 4- which is a six sided hexagon

    asked by Chelsea
  33. Grammar

    Determine if the following sentence employ the correct use of commas and apostrophes.TRUE=correct FALSE=wrong 1.The patient is a 41-year-old, white female with a several-month's history of biliary colic. ANSWER: False Thinking comma after old can be

    asked by Leslie
  34. Grammar

    Determine if the following sentence employ the correct use of commas and apostrophes.TRUE=correct FALSE=wrong 1. The infant's first dextrose stick after delivery was 23; howeveer, the child drank 1 oz of formula, and the repeat dextrose stick 1/2 hour

    asked by Leslie
  35. Grammar

    Determine if the following sentence employ the correct use of commas and apostrophes.TRUE=correct False=incorrect Inside of the patient's nose is crusty and clear with blood-tinged discharge; however, the patient has no complaints of breathing problems.

    asked by Leslie
  36. What is a good quote for Romeo and Juliet?

    What is a good quote for me to explain that it is important to think before you act? In the play, Romeo and Juliet? Thanks -Allyson I was thinking of something between Romeo and Juliet themselves, it would be helpful in my essay. I've already searched

    asked by Allyson
  37. Grammar

    Determine if the following sentence employ the correct use of commas and apostrophes. True Correct False wrong 1. The girl's mother, a nurse at a local clinic, was called at her work and told of her daughter's injury. Answer: True

    asked by Leslie
  38. geometry

    Determine the slant height of a right pyramid whose lateral area is 90 ft^2 and whose base is a regular hexagon with a 3 ft side.

    asked by Mary
  39. chemistry

    CH3OH  CO + 2H2 H = +90.7kJ 9. For the forward reaction, is heat being absorbed or released? 10. How much heat would be transferred if 45.0 g of CH3OH is decomposed? 11. What quantity of CH3OH decomposition would lead to an enthalpy change of 18.5 kJ

    asked by Anonymous
  40. Physics

    The space shuttle is in a 150km-high circular orbit. It needs to reach a 560km-high circular orbit to catch the Hubble Space Telescope for repairs. The shuttle's mass is 7.00×10^4kg. How much energy is required to boost it to the new orbit? In the

    asked by Preston
  41. Chemistry

    Calculate the pH of the 0.20 M NH3/0.20 M NH4Cl buffer. What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer?

    asked by Kelly
  42. CRYSTAL VIOLET HYDROXYLATION REACTION

    does anyone have the spartan pre-lab images/info they'd like to share? :)

    asked by theman
  43. Chemistry

    A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius. a) what is the molar mass of the gas? b) if the volume of the temperature are kept constant while 0.400 g of the same gas are added to that already in the container,

    asked by Lee
  44. chemistry

    CH3OH  CO + 2H2 H = +90.7kJ 9. For the forward reaction, is heat being absorbed or released? 10. How much heat would be transferred if 45.0 g of CH3OH is decomposed? 11. What quantity of CH3OH decomposition would lead to an enthalpy change of 18.5 kJ

    asked by Anonymous
  45. geometry

    I realy need help please!!!! 1-Describe the translation in words: (x, y) (x - 4, y - 9) A)4 units to the left, 9 units down B)4 units to the left, 9 units up C)4 units to the right, 9 units down D)4 units to the right, 9 units up

    asked by mo
  46. Chem

    2 Ag+(aq) + Fe(s) --> 2 Ag(s) + Fe2+(aq) In which directions do the cations and anions migrate through the solution? cations toward the silver cathode or toward the iron cathode thanks

    asked by Hannah
  47. Physics

    juana slides a crate along the floor of the moving van the coefficient of kinetic friction between the crate and van floor is 0.120 the crate has a mass of 56.8 kg and juana pushes with horizontal force of 124 N. if 74.4 J of work are done on crate and the

    asked by Mark
  48. Pre-Calc

    A hall 200 feet in length is to be designed as an ellipse if the foci are 35 feet from the center. How high will the ceiling be from the center?

    asked by Madison
  49. chemistry

    How do you find the molarity(M) of NaOH in this reaction: 2NaOH(aq) + H2C2O4-H2O > Na2C2O4(aq) + 2H2O The only given information is 0.2079g of H2C2O4-2H2O

    asked by Holly
  50. Math

    The speedometer of John's truck uses the revolutions of his tires to calculate the speed of the truck. How many revolutions per minute do the tires make when the truck is traveling at 55 miles per hour? (picture with tires with diameter of 26 in.) Suppose

    asked by Gabi
  51. Chemistry

    Can an acidic solution be made less acidic by adding an acidic solution?

    asked by Angel
  52. English

    1. Select the letter of the sentence in which the correct pronoun is used. A. The trip led to an argument between Helen and I. B. It was we who demanded an apology from the newspaper. C. We appreciated him writing a personal letter to explain his stand on

    asked by anthony
  53. Math

    My question is: WRite the percent as a fraction and as a decimal. 0.06% I don't know how many places I need to move that decimal to convert this percent into a decimal.

    asked by Erika
  54. Pre-calculus

    So a computer virus has been created via Corporate e-mail. Let t=0 be the time of the first 100 infections, and at t=17 minutes the population of infected computers grows to 200. Assume the anti-virus companies arent able to identify the virus or slow its

    asked by Christian
  55. Chem II

    2 NOCl(g) --> 2 NO(g) + Cl2(g) Let’s assume that at a given temperature the equilibrium constant is 2.25: Also, the equilibrium concentration of the NOCl is 0.04M. Determine the concentration of the NO and the Cl2 CLUE: the concentration of both of the

    asked by Sarah
  56. social studies

    WHAT IS SOCIAL STUDIES?

    asked by mr. ayedun. i.s
  57. CHEMISTRY (HELP)

    Which of the following is true about the reaction between sodium bromide and silver sulfate? 1. No reaction 2. Total ionic equation is identical to the net ionic equation 3. Sodium ions and sulfate ions are present in the toal ionic equation but not in the

    asked by Gina
  58. Spanish

    Complete each sentence with the correct form of the appropriate verb. Each verb will be used only once. hacer beber escribir compartir vender 1.Tú siempre agua después de correr. 2. Yo siempre la tarea después de las clases. 3. La cafetería unas

    asked by Bobby
  59. Punctuation

    Is this correct? Even though it is almost summer, we still have overcast skies and light rain. The neighbors’ new dog is, small, quiet and shy. The oil from Eucalyptus trees, which are native to Australia, is known for its medicinal properties. Paloma

    asked by Natasha
  60. Pre-calc

    A racetrack is in the shape of an ellipse, 80 feet long and 40 feet wide. What is the width 10 feet from the end?

    asked by Deanna
  61. Trig

    Use a cofunction to write an expression equal to csc(4ð/11). I need help solving this problem. Thank You

    asked by Rachal
  62. math

    if a and b are acute angles, sin(a+b)= 56/65, and sin b = 5/13, find sin a

    asked by giddy
  63. math gr.10

    Hi! I have been stuck on this problem for the past 20 minutes. Please help! A rectangular garden 30m by 40m has two paths of equal width crossing through as shwon. Find the width of each path if the total area covered by the paths s 325m^2. () - represents

    asked by jamie
  64. trig

    how do you graph y=-(1/4)sin(3/4x+pi/8? include the amplitude, period, vertical translation, horizontal shift, and table of values please.

    asked by amber
  65. Physics

    A round body of mass M, radius R, and moment of inertia I= BMR^2 is rolling without slipping. Its kinetic energy can be decomposed into the energy of its center of mass motion (translation) and the enrgy of rotation about its center of mass. The fractions

    asked by Jason
  66. chemistry urg!

    Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution

    asked by Daniel Forero
  67. physics

    In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

    asked by go
  68. chemistry

    Explain the observed temperature change upon mixing ethanol and cyclohexane.

    asked by agu
  69. hum/176

    Write a 500- to 550-word essay response for Part One. Comprehensive writing skills must be used.

    asked by Pooh
  70. teacher aide

    Can someone tell me if I have it answered right. A common stereotype against females is that they are A Messy B Passive C Active D Competitive I say B passive I'm I right.

    asked by Karrie
  71. science

    why does tornado alley get so many tornadoes?

    asked by tae
  72. Trig- Check my answer Please

    Use a cofunction to write an expression equal to csc(4ð/11). Is the answer csc(4ð/11)= 1/sin(4ð/11)

    asked by Rachal
  73. Physical science

    I need help with the gas laws (Boyle's, Charle's, Gay-Lussac's & the combined gas law). A sample of 6.00 liters of xenon is collected at 960 mm Hg and 50 degrees Celsius. What is the volume at STP?

    asked by Jacqueline
  74. biology

    Discuss possible benefits and drawbacks of a transgenic organism such as Bt corn?

    asked by kelly
  75. Calculus

    THe demand funtion is modeled by D(q) = 56e^-0.000012q, where q is quantity and D(q) is price. What price will yield the maximum revenue? Prove this is a maximum using as qppropriate derivative test.

    asked by Janet
  76. physics

    A person throws a physics book off of a cliff at an initial speed of 3 m/s at an angle of 20 degrees. The book is in the air for a total of 2.5 seconds. a) How high is the cliff? b) How far away from the base of the cliff does the book land? c) What is the

    asked by ryan
  77. math

    A recreation room has the following dimensions.12ft,30ft,8ft,8ft. Carpeting will cost $1.50 a square foot. How many square feet of carpet will be needed and how much will it cost? Include correct units at each stage within your solution.

    asked by kozy
  78. English

    1. Select the letter of the sentence in which the correct pronoun is used. A. Who has the nominated committee selected for club president? B. John Adams was the first president whom lived in the White House. C. Who do you think will be the winner of the

    asked by anthony
  79. physics

    In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

    asked by go
  80. Algebra 1 polynomials

    Write the polynomial in descending order by the exponents of the x terms 8x^2+4-5ax^3+6a^2x

    asked by Samad
  81. chemistry

    what volumes of 2M and 4M CaCl2have to be mixed to give 6Liters of 2.5M CaCl2?

    asked by Daniel Forero
  82. riddle

    what starts with "ne" and is one of nine, and ends with "ne" and is eighth in line

    asked by suzy
  83. maths

    The variation in size from year to year of a particular population can be modelled by an exponential model with annual proportionate growth rate 0.1246. The size of the population at the start of the initial year is 360. Choose the TWO options that give,

    asked by albert
  84. english

    Please check my work. How did I do? Also, please correct me on any gramatical mistakes. Thank you. Summary, Analysis, Synthesis, and Evaluation...... Write a paragraph explaining the key differences between the four types of writing. An analysis is your

    asked by icelocsgirl
  85. math

    A number cube numbered 1 through 6 is rolled. What is the probalitlity of rolling a prime number?

    asked by sheliayoung
  86. Algebra- I get 1 out of two parts

    Owners of a recreation area are filling a small pond with water. They are adding water at a rate of 25 liters per minute. There are 700 liters in the pond to start. Let W represent the amount of water in the pond (in liters), and let T represent the number

    asked by Rachal
  87. physics

    A hollow metal ball carrying an electric charge produces no electric field at a point: is it inside the ball?

    asked by ashley --- HELP PLEASEE!!!
  88. MATLAB MATH HELP HELP HELP HELP HELP HELP

    Write three functions, AppEval, AppDeriv and AppInt that approximate the value, the derivative and the integral of an unknown function f for which you are given only some unevenly spaced values. More specifically, the function AppEval has to be written in

    asked by DELORIS
  89. Math

    The perfentage of residents in a city in Shreveport who recycle increased from 28.3% in 2000 to 31.1% in 2007. Predict the percentage of residents who will recycle in 2017.

    asked by Brandi
  90. Trig

    Let (theta) be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).

    asked by Johnny
  91. Science

    what does the statement" the properties of salts are different from the properties of the elements that go into making them" mean ? include an example in your answer

    asked by Kateri
  92. Pre-Calc

    A mirror is in the shape of a paraboloid. If a light source is 6 feet from the base along the axis of symmetry and the opening is 12 feet across, how deep should the mirror be?

    asked by Madison
  93. math

    what is 3 equivalent fractions for 36/9

    asked by Anonymous
  94. Finance

    If you invest $500 in a bank where you will earn 8% compounded annually, how much will it be worth after 7 years?

    asked by Mary
  95. chemistry2

    Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution

    asked by Daniel Forero
  96. geometry

    Need help in finding -the lateral area and surface area for a cylinder whose height is 8cm and radius is 9 cm.

    asked by Mary
  97. chemistry

    I have two solutions of 0.1 Molar. A solution of magnesium chloride and a solution of potassium chloride. I thought that the 0.1 M solution of magnesium chloride would conduct electricity better than a 0.1 M solution of potassium chloride. I did a lab in

    asked by charlie
  98. physics

    In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

    asked by go
  99. Physics

    A convex mirror has a radius of curvature of 36.0 cm. When a 5.60 cm tall object is placed in front of the mirror, the magnification is 0.250. (a) What is the height of the image? (b) How far is the object from the mirror?

    asked by Kayleigh
  100. geometry

    What is the measure of angle DBC if the measure of angle ABD is represented by 4x, the measure of angle DBC is represented by 3x and the measure of angle ABC is 77 degrees?

    asked by jessica
  101. IPC

    i don't have a book or anything to go look all this stuff up so i really need help understanding this.. Which of the following statements is not true? a)negatively charged objects attract other negatively charged objects. b)postively charged objects

    asked by Please help!!
  102. Chemistry

    how do you calculate the pOH of a 0.25M solution of monochloroacetic acetic acid at 25C

    asked by Illyana
  103. math

    your brother jack will be 2 years from being twice as old as your sister jen. the sum of jacks age and three times jens age is 66. how old is jem?

    asked by Anonymous
  104. maths

    Choose the option that gives an expression for the indefinite integral ʃ (cos(4x) + 2x^2)(sin(4x) − x) dx. In each option, c is an arbitrary constant. Options A cos(4x) + 2x^2 +c B -1/8cos(4x) + 2x^2)^2 +c C 1/4 (sin(4x) − x)^2 + c D (1/(2 (sin(4x)

    asked by albert
  105. Calculus 3

    Vectors The thrust of an airplane's engine produces a speed of 400 mph in still air. The wind velocity is given by . In what direction should the plane travel to fly due south? Give your answer as an angle from due south.

    asked by Anonymous
  106. maths

    The method for completing the square can be used to write the expression −2x^2 + 12x−5 in the form a(x + b)^2 + c, where a, b and c are constants. Choose the option that gives the value of c. Options A −23 B −13 2 C 5 2 D 3 E 13 F 14

    asked by albert
  107. physics

    if you push a book on a table so that its velocity is constant if the force you apply is 15 n what is the force due to sliding friction

    asked by herd
  108. geometry

    the area of a trapezoid is 108 square inches and one of its bases has a length of 8 inches. If the height of the trapezoid is 1.5 feet,f ind the length of the other base in inches.

    asked by Erin
  109. art

    how long did it take Da Vinci to paint the mona lisa? when did he start it and finish it? what is the theory about the girl who posed for it? list other professions of leonardo da vinci... please help if you know the answers

    asked by Pam
  110. math

    1245798 divided by 124 equals

    asked by dfbdsh
  111. Geometry

    Calculate the lateral and surface area of a prism whose height is 12 cm and whose base is a rectangle with dimensions 5 cm by 7 cm.

    asked by Mary
  112. problem solving

    anna is 8th in line, carl is 3 places behind her, the man behind carl is last in line, what number is carl in line?

    asked by tera
  113. Math

    Please simplify this expression: 8b + 9 + 4b - 3b + (-2b) - (-5)

    asked by Daniel
  114. english

    how did people dress in Elizabethan England? How did the way people dress differ depending on his or her social status? what was the music of the Elizabethan era like? Who were some famous composers? please help me because I cant find these answers

    asked by Teara
  115. math

    a number cube numbered 1 through 6 is rolled.what is the probabilty of rolling a prime number.

    asked by cameron
  116. HCA/230

    I am totally stuck on my hw assignment maybe you can give me a pointer to start? This is what I have to do: Patients and caregivers may conform to a specific role during a health care visit. This usually happens because of cultural background or the

    asked by Nikol
  117. probability and statistics I NEED HELP

    The MSU basketball team is playing OU. If the probability that MSU wins the game is 0.68 and the probability that OU wins is 0.27. 1. Find the probability that MSU or OU wins. 2. Find the Probability that there is a tie.

    asked by Emily
  118. Science

    Electrons move at a speed of 4.4 104 m/s through a 6.0 10-2 T magnetic field which is perpendicular to their motion. Calculate the radius of the electrons' circular path.

    asked by Chris
  119. calculus

    Please help with this question. I have a general solution to a differential equation of 18y^3/2= TOP LINE OF FRACTION is 2(x^2-6x+23)^3/2 and this is divided by 3. What is the particular solution for which y=2 when x=1. Then I need this particular solution

    asked by Tony
  120. science

    determine the weight of an object if its mass is 68kg and the pull of gravity is 9.8 m/s^2. someone please help me an show the work please

    asked by spookie
  121. chemistry

    calculate the molarity of a solution prepared by dissolving 5g of sodium hydroxide in water to make 1l of solution

    asked by dann mavado
  122. Math

    You are allowed to omit two out of 12 questions on a quiz. How many ways can the six students be chosen?

    asked by Combinations: URGENT HELP D:
  123. Chemistry

    A sample of iron was heated to 161.0°C, then placed into 338 g of water at 21.6°C. The temperature of the water rose to 26.9°C. How many grams of iron were in the sample? Specific heat for Iron is 0.473.

    asked by teena
  124. algebra

    whats the subsitution method for: 7x+63y=12 x=3-9y

    asked by hoss
  125. physics

    A person throws a physics book off of a cliff at an initial speed of 3 m/s at an angle of 20 degrees. The book is in the air for a total of 2.5 seconds.

    asked by ryan
  126. calculus

    Please help with this question. I have a general solution to a differential equation of 18y^3/2= TOP LINE OF FRACTION is 2(x^2-6x+23)^3/2 and this is divided by 3.plus Constant .I work out constant c to be zero. Is this correct? What is the particular

    asked by Tony
  127. Chem

    The temperature of a sample of water is changed from 10 degree C to 30 degree C. he same change in Kevin degrees would be 1) 20 2) 100 3) 303 4) 273

    asked by Anonymous
  128. business

    the appearance of a document can do all of the following except.

    asked by Anonymous
  129. math

    solve 2(t-4)=3- (3t +1)

    asked by kenzie
  130. Chemistry

    Which of the following is true about the reaction between sodium bromide and silver sulfate? 1. No reaction 2. Total ionic equation is identical to the net ionic equation 3. Sodium ions and sulfate ions are present in the toal ionic equation but not in the

    asked by Gina
  131. physics

    In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

    asked by go
  132. Chemistry

    If 118 g of ice at 0.0°C is added to 1.55 L of water at 88°C, what is the final temperature of the mixture?

    asked by Sam
  133. Math: I need help.

    Peg spends $7.50 a week for grapefruit. When grapefruit are out of season, she gets 1 fewer grapefruit than when they are in season. If the price decreases by $3 per dozen in season, how many dollars will it cost to buy a dozen grapefruit out of season?

    asked by Diana
  134. Social Studies

    5 paragraphs about the colonist life??

    asked by Frances
  135. maths

    Choose the option that gives the solution of the initial-value problem dy dx=(1 + 2 cos2x^2)/y (y > 0), y= 1 when x = 0. Options A y = 1+ 2sin^2 x B y = (1 + 2 sin x)^2 C y = (4x + cos(2x))^2 D y = 4x + cos^2 x E y =sqrt(4x + cos(2x) F y =sqrt(1 + 4x +

    asked by albert
  136. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert
  137. maths

    A sequence is defined by un = 2×(−0.5)n + 3 (n = 1,2,3, . . .). Choose the option that best describes the long-term behaviour of the sequence. Options A un becomes arbitrarily small (that is, un → 0 as n→∞). B un becomes arbitrarily large and

    asked by albert
  138. 6th grade grammar

    What is the question answer flow for an exclamatory sentence

    asked by Michael
  139. algebra

    6sqrt (2) - 3sqrt (7) = ???

    asked by laura
  140. algebra

    Determine whether the point 1.8 is a solution of the system. Subitute the point of each equation. 2x+6y=50 10x+0y=10

    asked by diane
  141. algebra

    How do you determine the point of a solution of the system.The point is 46, 0 2x+10y+92 -6x-2y=24

    asked by diane
  142. algebra

    solve using elmination method 2x-6y=2 -8x+6y=26

    asked by diane
  143. probability and statistics

    The MSU basketball team is playing OU. If the probability that MSU wins the game is 0.68 and the probability that OU wins is 0.27. 1. Find the probability that MSU or OU wins. 2. Find the Probability that there is a tie.

    asked by Emily
  144. physics

    if a van has a package in the back and is traveling 55 miles and hour is in a head on collision with a vehicle also traveling 55 miles an hour how fast is the package in the back of the van going to hit the driver in the back

    asked by Pete
  145. science

    frastrated over your difficult asignment , you slam your hand on the table. ouch! why does your hand hurt? would it hurt if the table had broken when you hit it? (using Newton's third law)

    asked by anmol
  146. science

    i need 3 examples of supension. any suggestions?

    asked by grace
  147. Finance accounting

    Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases were: Feb. 20 600 units at $9 Aug. 12 300 units at $11 May 5 500 units at $10 Dec. 8 200 units at $12 Eddings Company uses a

    asked by Linda
  148. Geometry

    How do you calculate the lateral area and sueface area of a pyramid whose height is 8ft and whose base is a square with 12 sides.

    asked by Mary
  149. geometry

    equation of a line with the co-ordinates(10,0),(11,2),(12,4),(13,6) and (14,8)

    asked by Anonymous
  150. math

    [7-(-8)]|-6|=

    asked by connie
  151. discrete math

    "a club with 20 members must choose a three-person committee and a five-person committee. how many ways can the two committees be chosen if the committees can overlap? how many ways can the two committees be chosen if the committees cannot overlap?".

    asked by Caren
  152. Math

    Find the perimeter and area of a right triangle if the shortest side is 20 mm. and the longest side is 52 mm. Include correct units with each part of your solution.

    asked by Geena
  153. Math

    How many cubic centimeters of ice cream can an ice cream cone (within the cone) hold if its height is 7 centimeters and the diameter of its base is 4 centimeters? Give solution accurate to the nearest hundredth. Include correct units with your solution

    asked by Geena
  154. trig

    Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).

    asked by Johnny
  155. physics

    A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus Earth) when the climber

    asked by Merlin
  156. Probability NEED HELP

    1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8? 2. When two fair dice are tossed, what is the probability of doubles or a sum over 9? 3. Evaluate 1025! / 1022! Please help

    asked by Hannah
  157. Romeo and Juliet Essay Question!

    Okay, so this is just a few setences from my paragraph and I'm not sure how to continue with it. Another example would be that Romeo does kill himself, since he thinks that Juliet is dead. Next, Since he kills himself for Juliet, it's showing how much he

    asked by Allyson
  158. Number sence

    In mrs. Kyoto's class,7/10 of the pupils have pets.of those pupils,4/7 have cats.what fraction of the class has pet cats?

    asked by Kamilah
  159. math

    find the value of n so that x2-n=0 has solutions at x=8 and x=-8

    asked by bob
  160. Number sence

    What is 23.97-2.875?

    asked by Kamilah
  161. Punctuation

    Paloma did not make it to work for her car, broke down on the freeway. Is this better? The hardware store down the street, which had been paved recently, is open until midnight five days a week. Many students anticipate spring break but, Luis looks forward

    asked by Natasha
  162. Chemistry

    To what volume must a solution of 86.1 g H2SO4 in 494.0 mL of solution be diluted to give a 0.18 M solution?

    asked by Sam
  163. chemistry

    How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 gallons of a 4.61 m solution with a density of 1.88 g/mL? i think that this is a dimensional analysis type of question. 1 gal ~ 3485.41 ml. i just need help with the set up, i think...

    asked by Myra
  164. college math

    Find the perimeter and area of a right triangle if the shortest side is 20 mm. and the longest side is 52 mm. Include correct units with each part of your solution.

    asked by kozy
  165. math

    Generate ordered pairs for the function for x= -2, -1, 0, 1, 2

    asked by kenzie
  166. geometry

    help please.... 1:(-2, -1) is reflected over the y-axis. What are the coordinates of the image? A:(2, -1) B:(-2, 1) C:(-1, -2) D:(2, 1) 2:(2, -5) is reflected over the x-axis. What are the coordinates of the image? A: (-2, -5) B;(2, 5) C:(-5, 2) D:(-2, 5)

    asked by mo
  167. Maths

    How do u write 10th May 2011 in 9letters without using number??

    asked by Arvin
  168. chemistry

    what is the word equation for aqueous solutions of sodium chloride and silver nitrate are mixed to make an aqueous of sodium nitrate and silver choride solid

    asked by des
  169. chemistry

    Considering a 1.0M of each solution, which has the greatest osmolarity? 1. FeCl3 2. K2O 3. HCl 4. HC2H3O2

    asked by Gina
  170. Programming

    I suppose to write a program that calculates the average of up to 50 numbers input by the user and stored in an array. The program should use a class name Statistics and have an AddNumber method that stores numbers into an arrey one at a time. The class

    asked by Solomon
  171. English/Grammar

    Review the following sentences. Some of them are correct, whereas others contain an error with a commonly confused word. Identify those with errors by marking each of the errors in bold. Make the correction in parentheses after the error. For those that

    asked by Angelina
  172. English

    Can you check the meaning of these few phrasal verbs, please? Thank you In the beginning I dislike my classmates but then I came around thinking they aren't so bad. Can you drop in on me after school. I need to talk to you. My plan to go to the mountains

    asked by Henry1
  173. math

    A coin is tossed four times. Find the probability of each of the following: P(exactly 1 head) I know we have to use to this formula p(x=0)=nCk(p)^k(1-p)^n-k How do you find P? if n=4

    asked by Jay
  174. Grammar

    1. An appositive: A. is another term for possessive pronouns. B. is an antecedent. C. is always plural. D. renames the noun. I think it's D? 2. The pronoun "who" can be used for: A. subjects B direct objects C. indirect objects D. objects of the

    asked by anthony
  175. chemistry

    How much energy does it take to heat 10ml up 30 degrees celcius in kilocalories

    asked by Sean
  176. ga

    What letters are needed to complete this pattern? ADF GJM

    asked by Angela
  177. comp/155

    explain why using pronouns may help make your writing more effective?

    asked by sharon
  178. IPC

    Dont understand ipc at all... As more resistors are added to a series circuit, the current ____ Increases Stays the same Decreases

    asked by Help please!
  179. american history

    After reading about yellow journalism, explain how the media may or may not influence American foreign policy? Basically, what affect can the media have on the government’s decisions? Be sure to state specific examples from the reading. You may also want

    asked by louberna
  180. maths

    The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be 1kg or

    asked by albert
  181. English

    Can you please check if the following sentence is correct? Thank you. 1) They have sold millions of albums so far.

    asked by Henry1
  182. Geometry

    calculate the surface area of a hemisphere with the radius 10 ft

    asked by Mary
  183. geometry

    If Úc ≅ Úd, mÚc = 5x - 7, and mÚd = 3x + 25, how many degrees are in Úc? 9‹ 16‹ 52‹ 73‹

    asked by Chris
  184. maths

    Choose the option that gives (correct to two decimal places) the area of the region which is bounded by the x-axis and by the graph of y =(20(7 − x)(x − 3))/x^2 . Options A 0.47 B 1.31 C 2.09 D 3.76 E 5.12 F 6.55 G 8.20 H 9.46

    asked by albert
  185. religion

    crossword puzzle religion, helps us learn about God, 9 letters

    asked by Anonymous
  186. maths

    By first applying the Product Rule, choose the option that gives (correct to two decimal places) the overall maximum value of the function f(x) = e^3x cos(2x) on the interval [1/12 π, 1/4π]. Options A 0.49 B 1.90 C 2.19 D 2.42 E 3.97 F 5.88 G 7.46 H

    asked by albert
  187. Tips

    What are some tips for writing a book?

    asked by Amanda
  188. math

    The price per person of renting a boat varies inversely with the number of people renting the boat. It costs $20 per person if 27 people rent the boat. How much will it cost per person if 95 people rent the boat?

    asked by Anonymous
  189. writing

    how do sentences with the word brood

    asked by nicole
  190. Math Webquest

    Hey I'm working on a webquest about colleges comaring UCLA, FSU, PSU, and one of my choice. I'm wanting to major in graphic design and my Aunt told me a school acronym that sounded like FACTs. She said it was _____ of Art and Science. Any help with a list

    asked by Marinashley
  191. Physics

    How many moles are there in a 30 cm diameter basketball at a pressure of 160 kpa and temperature of 25 degree celcius.

    asked by Fredy
  192. statistics

    The sum of the measures of all angles in any 10-gon is how many degrees?

    asked by veronica
  193. Physics

    A driver of a car that is going 25 m/s suddenly notices a train blocking the road. At the instant the brakes are applied, the train is 60 m away. The car decelerates uniformily and stikes the train 3 secs later. (a) How fast was the car moving on impact?

    asked by Addie
  194. Probability

    1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8? 2. When two fair dice are tossed, what is the probability of doubles or a sum over 9? 3. Evaluate 1025! / 1022! Please help

    asked by Hannah
  195. math

    A baq of 60 marbles has 8 red, 9 blue, 10 orange, and 33 green marbles. In drawing a marble from the bag 100 times, an orange marble was picked 13 times. What was the likelihood of an orange marble being picked? Is this more or lessthan the actual number?

    asked by Anonymous
  196. medical billing/coding

    You're an HMO director. You would like to ensure that your managed care plan is meeting industry standards. Whats one way you acn do this/

    asked by kim
  197. infential statistics

    Random of size 2 are taken from a finite population which consist of the measurement 6,7,8,9,10 and 11 A: show that mean and that its S.D is equal to 0.493

    asked by Ayodeji
  198. 8th grade math

    a basketball player scored 8 pts total during 1st and 2nd quarters of a game. During the 3rd quarter she scored 3 times as many pts as she did in the 4th quarter. Let P = the # of pts the player scored in the 4th quarter. Write and simplify an expression

    asked by Kory
  199. cchs

    what are the name of the three parts

    asked by Anonymous
  200. Math 1

    if f=2X-5 and g(x) = 7x3

    asked by Lawan
  201. math

    Please complete each equation 1. 15k = (9 - _____)k 2. 3.6p - p = _____ - 0.4p 3. (8 + _____) * = 5m

    asked by Melissa
  202. WRITING

    how to give credit to line from a book that your putting in your research paper?

    asked by cat
  203. Algebra 2

    The speed of the current is 5m/h. Angie goes upstream 25 miles and returns to the doc. The whole trip takes 12 hours. What is the speed of the boat in still water?

    asked by Lori
  204. Life Orientation

    5 ways in which pollution impacts the community

    asked by Rinae
  205. physics

    A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 40.0 vibrations in 30.0 s. A given crest of the wave travels 425 cm along the rope in a period of 10.0 s.What is the wavelength? Show all of your work plz. i know

    asked by Anonymous
  206. algebra

    What do they mean when they ask you to find the function form?

    asked by Mase
  207. geometry

    if the width and height of the original 4in by 6in photograph is increased by a factor of 5,what are the dimensions of the enlargements?

    asked by elisabeth
  208. litres and millilitres

    1/10L=ml

    asked by paul
  209. Mat0099 Principles of Algebra

    I am confused about this problem, and don't know how to simplify it. -9[12-8(-3)*(-5)+1]

    asked by Mortik
  210. chemistry

    2.50x10 to the second power mL of 0.100M NaBr

    asked by nikki
  211. Mat0099 Principles of Algebra

    Please help me solve this problem. 2y+y^2-xy-(xy-y+3y^2) Thanks!

    asked by Mortik
  212. Algebra

    I've tried and tried and just can't do it. Please help solve this problem. 16-2(8w-7)=3w-18(2-w)

    asked by Ashley
  213. Math

    Please help simplify this problem. Its Kinda hard. 8-5/8+1/2*6/9 Thanks

    asked by Ashley
  214. aiu

    Read the following scenario about Mary. Based upon the information in the text and your own online research, discuss Mary’s ethical options. What do you think that she should do? Mary recently graduated from college and landed her first corporate

    asked by margy
  215. social studies 6th grade

    I am having a hard time finding the answer to this review question. I have read and reread the section the answer should be found in. Please help! What guidelines did the Quran provide for the Muslim states?

    asked by Reed
  216. Ethics

    What are three most important concepts or principles of ethics involved in medicine and the provision of health care services?

    asked by Jenn
  217. Calculus

    Intergral from -2 to 2 (-2 is at the bottom of the integral sign and 2 is at the top) x^-2dx = -x^-1] (the bracket has a 2 at the top and -2 at the bottom) = -(2)^-1-(-(-2)^-1) = (-1/2)-(1/2 = -1 Is this true or false. I think it's false, but can someone

    asked by John
  218. Math

    The nominal rate of interest is 8% and the rate of inflation is 5%. A single deposit is invested for 10 years. Let: A= value of the investment at the end of 10 years measured in "constant dollars," i.e. in dollars valued at time 0. B= value of the

    asked by Katie
  219. Number sence

    What is 23.97-2.875?

    asked by Kamilah
  220. math

    A customer is buying a $100 drill and two $15 drill bit sets. The customer uses a gift card worth $50 to pay for a portion of their bill. How much cash will the customer pay (before taxes)?

    asked by frannie
  221. Algebra 2

    I have to make a design on a graphing calculator using the first quadrant. I have to use linear, quadratics, circles, absolute value, and elipse. Please help.

    asked by Zack
  222. Number sence

    What is 1/3+1/2?

    asked by Kamilah
  223. Writing

    How do you mark thoughts in writing?

    asked by Amanda
  224. Algebra 1

    8/9 devided by 6/17 whats the answer in simplest form

    asked by Michael
  225. Number sence

    What is 15% of 200

    asked by Kamilah
  226. Physics

    A stone is thrown straight up with an initial speed of 80 ft/s. How high does the stone go, and how long does it stay in the air?

    asked by Addie
  227. Math

    Can you help simplify this problem for me? -9[12-8(-3)*(-5)+1 Thank you!

    asked by Brandi
  228. Math

    Can you help me simplify this problem? 2y+y^2-xy-(xy-y+3y^2) Thanks

    asked by B.N.
  229. math

    find the exact value using a double-angle identity

    asked by nano
  230. TRENDS IN FOOTWEAR BUSINESS

    wat r sum trends in foot wear Business? Me no get this question. Trends = ?????

    asked by JORDY
  231. math

    Apply logarithms to create a linear relationship: ((x^3)(y^1.5))/(z^.5)=k

    asked by sophie
  232. math

    Is this a direct variation y= -2x + 6

    asked by kenzie
  233. URGENT - History

    Hi, Okay, so where can I get other cartoons on Stalin? I was searching like forever to find that one. Thanks for all your help

    asked by Ella
  234. Geometry

    Determine the height of a right cone whose lateral area is 136rr ft^2 and base area is 64rr ft^2

    asked by Mary
  235. math

    Simplify (-4)4 the second 4 is the coeffcient plzz HELP

    asked by kenzie
  236. human resources

    List one external factor that you feel has a powerful influence on your company's HRM function and explain why?????

    asked by Lisa
  237. Geometry

    Find the surface are of a tent including the floor whose shape is cylinderical with a conical top. The diameter is 24 ft the height of the cylindrical portion is 6 ft and the height of the conical portion is 5 ft.

    asked by Mary
  238. CALCULUS HELP PLEASE!!

    Intergral from -2 to 2 (-2 is at the bottom of the integral sign and 2 is at the top) x^-2dx = -x^-1] (the bracket has a 2 at the top and -2 at the bottom) = -(2)^-1-(-(-2)^-1) = (-1/2)-(1/2) = -1 Is this true or false. I think it's false, but can someone

    asked by John
  239. Insurance form preparation

    Which of the following documents would provide information on a patient's diagnosis? A. Confidential patient information record b. ledger sheet c.medical treatment record d. CPT-4 Tossed up on answer

    asked by mary Ann
  240. Geometry

    Determine the length of an arc with the given central angle measure, m

    asked by Jarret
  241. 4th grade math

    convert 10 and one-third into a decimal

    asked by megajolt
  242. math

    write and equation in slope intercpt form using the folowing information : slope= 3 y intercept= -5

    asked by kenzie
  243. chemistry

    predict the actual precipitates which form (if such is the case) when the following solutions are mixed. a) silver sulphate and barium chloride b) ammonium iodine and potassium phosphate'' c) lead(II) acetate and rubidium bromide

    asked by zeny
  244. Physics

    A vector of magnitude 10 unit combine in the nurth direction combine with another vector to give a zero resultant what is the other vector?

    asked by Mashkur
  245. math

    simplify (-4)4 the second 4 is the exonent

    asked by kenzie
  246. math

    y - - 8= -12 solve the equation please :( 5

    asked by kenzie
  247. math

    is this a driect variation y= -2x +6

    asked by kenz
  248. math

    generate ordered pairs for the function x= -2, -1, 0, 1, 2

    asked by kenz
  249. Soc 110

    I need to write a paper of body word count of 750 words about the use of surveys by sociologist

    asked by Peggy