Questions Asked on
December 9, 2010

  1. Physics

    A 0.075 kg ball in a kinetic sculpture moves at a constant speed along a motorized conveyor belt. The ball rises 1.32 m above the ground. A constant frictional force of 0.350 N acts in the direction opposite the conveyor belt's motion. What is the net work

    asked by Brian
  2. Physics

    The front 1.20 m of a 1550 kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 26.0 m/s stops uniformly in 1.20 m, how long does the collision last? cannot_evaluate s (b) What is the magnitude of

    asked by Brittany
  3. Chemistry

    Which of the following compounds has the highest vapor pressure at 25°C? A. CH3CH2OH B. CH3OCH3 C. CH3CH2CH2Cl D. CH3CH2CH3 E. CH3CH2CH2CH

    asked by Jake
  4. Chemistry

    OK I just need help with two final problems that I am stuck on: The problem states the calcium carbonate in limestone reacts with HCl to produce a calcium chloride solution and carbon dioxide gas CaCO3(s)+2HCl(aq)-->CaCl2(aq)+H2O(l)+CO2(g) 1)Find how many

    asked by TT
  5. math

    how to find the four geometric means between 5 and 1215

    asked by g
  6. algebra 1

    what kind of shoes does a frog wear

    asked by star
  7. geometry

    find the area of a regular hexagon with the side length 4m. round to the nearest tenth

    asked by john
  8. physics

    When a player's finger presses a guitar string down onto a fret, the length of the vibrating portion of the string is shortened, thereby increasing the string's fundamental frequency. The string's tension and mass per unit length remain unchanged. If the

    asked by Please help me asap i dont want to fail
  9. Chemistry.

    Urea: (NH2)2CO 1. Which bonds in the molecule are polar and which are nonpolar? 2. What is the most polar bond in the molecule?

    asked by Jashmid
  10. Math

    Explain how to find 14 x 19 by breaking apart the factors into tens and ones and finding the sum of the four partial products

    asked by Mia
  11. chemistry

    a cell is constructed by immersing a strip of silver in .10 M AgNO3 solution and a strip of lead in 1.0 M Pb(NO3)2 solution. A wire and salt bridge complete the cell. What is the potential of the silver electrode in the cell?

    asked by audrey
  12. Geometry

    Maggie claims that to make the measure of an angle greater, you just extend the rays. How do you respond?

    asked by Gena
  13. Physics

    Hi I really need this question answer as a check: a helicopter holding a 70 kilogram package suspended from a rope 5.0 meters long accelerates upward at a rate of 5.2 m/s^2. a. Determine tension on the rope. b. When the upward velocity of the helicopter is

    asked by Rahul
  14. chemistry

    Calculate the Gibbs free energy change for the reaction below when initial concentrations of CR3+ and Cu2+ are 1 M (F= 96500 J/V mole e-) 2Cr3+ (aq) + 3Cu (s) --> 2Cr (s) + 3Cu2+ (aq) I assume we use the deltaG= -nFE equation, but how do you know n when Cr

    asked by audrey
  15. Physics ( check answers)

    Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvf-mvi/change(t) I got 375 for that one...

    asked by Pablo
  16. 2nd grade

    Why are the flat surfaces on a rectangular prism called faces?

    asked by kelly
  17. Geometry

    Maggie claims that to make the measure of an angle greater, you just extend the rays. How do you respond?

    asked by Gena
  18. math

    Andy had 20% fewer marbles than Henry. When Andy gave 80 marbles to Henry, the numbers of marbles he had left was half of what Henry had. How many marbles did Andy have in the begining? Please help me

    asked by Evelyn
  19. Math

    A math teacher drove by a playground that was full of boys and dogs.The teacher notice there were a total of 40 heads and 100 feet. Hom many boys and how many dogs were there?

    asked by Layla
  20. physics

    A 59 kg diver stands at the end of a 32 kg springboard, the spring board is 3 m long. The board is attached to a hinge at the left end, but simply rests on the right support which is half way along the board. What is the magnitude of the vertical force

    asked by rosie
  21. Chemistry

    calculate the theoretical number of moles of HCl equivalent to 1 mole of a) NaHCO3 b)CaCO3 c)Al2O3

    asked by prince
  22. physics

    The driver of the car traveling at a constant 25m/s sees a child suddenly run into the road. It takes the driver 0.45s to hit the brakes. As it slows, the car has a steady acceleration of 8.5m/s©ü. What the total distance the car move before it stops.

    asked by apol
  23. math

    a can of soda weighs 336 grams. find the weight in kilograms

    asked by raelee
  24. Chemistry

    How many milligrams of NaHCO3 are in a 500mg tablet if 40.0 mL of 0.120M HCL is required to neutralize the sample?

    asked by prince
  25. Finance

    The extent to which inventory financing may be used depends on

    asked by bob
  26. physics

    Two freight cars, each with a mass of 3.9 105 kg, collide and stick together. One was initially moving at 3.2 m/s and the other was at rest. What is their final speed in m/s?

    asked by lets go
  27. physics

    A bullet of mass 8 g strikes a ballistic pendulum of mass 2.0 kg. The center of mass of the pendulum rises a vertical distance of 10 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.

    asked by joey
  28. geometry

    in the abcd parallelogram ad=10 units ac= 12 units ed= 4.5 units ab= 8 units. If angle aed = 100 then dec= ?

    asked by miya
  29. physics

    A block slides down a frictionless ramp. If the ramp angle is 22 degrees and the length of it is 25m. find the speed of the block as it reaches the end of the ramp, assuming it started sliding from rest at the top.

    asked by rosie
  30. math

    break apart these numbers 40x16

    asked by stephanie
  31. college

    Write as a single log : 3log2+2log8- 1/2 log4 ( simplify your answer) Ans

    asked by Anonymous
  32. physicss

    The question states: A 5.2 kg box is on a frictionless 36 degree slope and is connected via a massless string over a massless, frictionless pulley to a hanging 2.1 kg weight. What is the tension in the string if the 5.2 kg box is held in place, so that it

    asked by Taylor
  33. Calc.

    Find the minimum cost of producing 20,000 units of a product, where x is the number of units of labor (at$48 per unit) and y is the number of units of capital (at $36 per unit). P(x,y)=100x^.6y^.4

    asked by Nancy
  34. mechanics

    A string is wound around a uniform disk of radius R and mass M. The disk is released from rest when the string is vertical and its top end is tied to a fixed bar. (a) Draw a free body diagram indicating all the forces acting on the disk. (b) Calculate the

    asked by sana
  35. trig

    find the exact value of cos 3.14/8

    asked by ashely
  36. Physics

    1. A fisherman's scale stretches 3.6 cm when a 2.5-kg fish hangs from it. What will be the frequency of oscillation if the fish is pulled down 2.7 cm more and released so that it oscillates up and down? 2. Two trains emit 518 Hz whistles. One train is

    asked by Katelyn
  37. Chemistry

    The odor of pineapple is due to the compound ethyl butyrate, which contains hydrogen, carbon, and oxygen. When 3.70g of ethyl butyrate are burned, 8.41g of carbon dioxide and 3.43g of water are the only products. Determine the empirical formula of ethyl

    asked by Steward
  38. algebra

    11) The Half-Life of Tylenol is approximately 3 hours. If you take 1000mg, how Tylenol much is left in your body after 4 hours?

    asked by Mary
  39. chemistry HELP

    laboratoories order hydrochloric acid as a concentrated solution (e.g. 36% W/V). what initial volume of concentrated laboratory hydrochloric acid should be diluted to prepare 5.00L of a 0.12 mol/L solution for an experiment? plz can someone show me how to

    asked by TARA
  40. physics

    A bullet fired vertically upwards from a gun held 2m above the ground reaches its maximum height in 4sec, calculate its initial velocity and the total distance the bullet travels by the time it hits the ground

    asked by Saul
  41. Chemistry

    a 15.00mL sample of NaOH was titrated to the stoichiometric point with 17.40mL of 0.2340M HCl. a) what is the molar concentration of the NaOH solution? b)calculate the grams of NaOH in the solution.

    asked by prince
  42. Physics

    A light string, connects blocks 1 and 2 of masses m1 and m2. These blocks are further connected to a block of mass M by another light string that passes over a pulley of negligible mass and friction. Blocks 1 and 2 move with a constant velocity v down the

    asked by Rahul
  43. physics

    Two freight cars, each with a mass of 3.9 105 kg, collide and stick together. One was initially moving at 3.2 m/s and the other was at rest. What is their final speed in m/s?

    asked by lets go
  44. Physics

    Ultrasound reflected from an oncoming bloodstream that is moving at 30 cm/s is mixed with the original frequency of 1.3 MHz to produce beats. What is the beat frequency? (Velocity of sound in blood = 1540 m/s.) Beat frequency = Hz HELP: This problem

    asked by Angel
  45. Geometry Please Help

    Given: QS bisects ∠RQT; ∠R ≅ ∠ T Prove: SQ bisects ∠RST /Users/szeringue/Documents/triangle.doc

    asked by Sam
  46. English

    A: Hello, may I speak to Andy? B: Sorry, he's out. ______, please? A: This is Harry Simpson. 1. Who calls 2. Who's calling 3. Who is this (Which expressions can be put in the blank? Is #1 correct? Can we use some other expressions? I think #2 and #3 are

    asked by rfvv
  47. Physics

    A hydraulic lift consists of a platform that is supported by a cylindrical piston, which resides in a tube connected to a reservoir of hydraulic fluid. The piston and platform have a mass of 300 kg. The input force is generated at a smaller piston

    asked by Sam
  48. Chemistry

    A sample of phosphorus of mass 3.654 g reacts with dichlorine to form 16.20 g of a molecular compound. What is the empirical formula of this compound?

    asked by Roger
  49. Chemistry

    Calculate the molarity of the following solutions: 5.0g of KOH in 4.0L of KOH solution I went from grams of KOH to moles of KOH to molarity but still got the wrong answer... 5.0g KOH X 1 mol KOH/56.108g KOH = 5.0 mol KOH/56.108=0.0891 mol KOH/4.0L and got

    asked by TT
  50. Geometry Please Help

    Given: QS bisects ∠RQT; ∠R ≅ ∠ T Prove: SQ bisects ∠RST

    asked by Sam
  51. Algebra uno, help please(:

    Between 1990 and 2000, the number of thousand vists by people to hawaii volcanoes national park increased by about 43.1 thousand visits per year. in 2000 there were about 1529.6 thousands visits to the park. Write an equation in slope-intercept form that

    asked by Allyson
  52. Physics

    What is the momentum of a two-particle sys- tem composed of a 1300 kg car moving east at 60 m/s and a second 1500 kg car moving west at 95 m/s? Let east be the positive direction. Answer in units of kg · m/s.

    asked by Ashley
  53. Precalculus

    Having trouble with this: Verify: csc^4x-cot^4x=2csc^2x-1 *the numbers after the carets are to the power of

    asked by Joseph
  54. physics

    Jason takes off across level water on his jet-powered skis. The combined mass of Jason and skis is 75 kg (the mass of the fuel is negligible). The skis have a thrust of 200 N and a coefficient of kinetic friction on water of 0.1. Unfortunately, the skis

    asked by rosie
  55. Math

    I'm TOTALLY stuck on my math!!! How do I find the unit rate of $11.49 for 3 packages?? I have to round to the nearest hundredth if necessary.... :)

    asked by Anonymous
  56. chemistry

    The strongest intermolecular forces present in a sample of pure I2 are A. covalent bonds. B. covalent network bonds. C. metallic bonds. D. dipole–dipole forces. E. London forces.

    asked by Jake
  57. mechanics

    Two planets, X and Y , travel counterclockwise in circular orbits about a star, as shown in figure below. The radii of their orbits are in the ratio 3 : 1. At some time, they are aligned as in the figure, making a straight line with the star. During the

    asked by sana
  58. Ap American Lit

    hi i need help making literary 3x3 cards for Jane Eyre chapters 1-10 does any one have good ideas?

    asked by karin
  59. geometry

    in triangle GHJ, K(2,3) is the midpoint of GH, L(4,1) is the midpoint of HJ, M(6,2) is the midpoint of GJ. Find the coordinates of G, H, and J.

    asked by brandi
  60. Chemistry!

    What is theoretical yield when 15.6g of bromobenzene & 8.3g of methyl benzoate is used in a Grignard reaction.

    asked by margrav2
  61. chemistry need help plzzz tomorrow is a TEST!!!

    phosphoric acid is the active ingredient in many commercial rust-removing solution.calculate the volume of concentrated phosphoric acid (14.6 mol/L)that must be diluted to prepare 500mL of a 1.25 mol/L solution. how can i calulate the volume cocentration

    asked by TARA
  62. Geometry

    1. Explain whether the following statement is a valid definition: “A 150° angle is an obtuse angle.” Use the converse, biconditional, and at least one Euler diagram to support your answer. 2. Explain the purposes of inductive and deductive reasoning

    asked by Julie
  63. AP PHYSICS

    A hydraulic lift consists of a platform that is supported by a cylindrical piston, which resides in a tube connected to a reservoir of hydraulic fluid. The piston and platform have a mass of 300 kg. The input force is generated at a smaller piston

    asked by Anonymous
  64. Spanish for Whitney

    In case you don't go back to your other post, I don't want you to miss what I wrote: It's new terminology then because for over 70 years I have only heard as verb forms: Seven Simple Tenses: Present Indicative (Presente de Indicativo), Imperfect Indicative

    asked by SraJMcGin
  65. Chemistry

    A 5.00 gram mixture of CaO and CaO3 is heated strongly. After heating, the mixture it has a mass of 4.00 grams. What % of the original mixture is CaCo3?

    asked by Paul
  66. Chemistry

    All of the following are postulates of the kinetic molecular theory of gases except A. The gas molecules are in constant motion. B. The gas molecules are in rapid motion. C. The collisions between molecules are elastic. D. At a constant temperature, each

    asked by Jake
  67. 8th grade

    When a truck pulls a trailer, the trailer and truck accelerate forward even though the action and reaction forces are the same size but are going in opposite directions. Why don't these forces balance each other out?

    asked by Anonymous
  68. math

    Consider a parabola P that is congruent to y=x^2, opens upward,and has its vertex at (2,-4). Now find the equation of a new parabola that results if P is: A. stretched vertically by a factor of 5. B. compressed by a factor of 2. C. translated 2 units to

    asked by ted
  69. Math Finite

    A box contains 15 pens of which 4 are defective. A random sample of 3 pens is taken without replacement and without regard to order. What is the probability of selecting at least one defective pen?

    asked by Amy
  70. accounting

    which of the following is never considered in incremental analysis? a. incremental revenue b.sunk cost c.incremental profit d. differential costs

    asked by taneka
  71. Physics

    The length of a simple pendulum is 0.58 m, the pendulum bob has a mass of 285 g, and it is released at an angle of 16 degrees to the vertical. With what frequency does it oscillate?

    asked by Jessica
  72. Business

    Based on this financial info where a company's Beta Year = 2008, the Company's commons stock = 0.85, the Risk-Free Rate of Return = 5%, and the Market Risk Premium = 6%. Use the dividend growth model to calculate the Company's Common Stock in 2008. Stock 1

    asked by Ann
  73. physics

    A 10 kg block slides up a hill to a height of 5.8 m. If 414 J of thermal energy are generated, how fast was the block going at the bottom of the hill?

    asked by mas
  74. 8th grade

    An alloy of metals is 25% copper .Another alloy is 50% copper. How much of each alloy should be used to make 1000grams of an alloy that is 45% copper?

    asked by Jake
  75. physics. please help

    A worker pushes a 820 N crate with a horizontal force of 345 N a distance of 24 m. Assume the coefficient of kinetic frictin between the crate and the floor is 0.22. a) How much work is done by the worker on the crate? b) How much work is done by the

    asked by Alecia
  76. Chemistry

    The normal boiling point of a liquid is A. the temperature at which all three phases are in equilibrium. B. the only temperature at which there can be equilibrium between the liquid and gas states. C. the temperature at which the vapor pressure equals 760

    asked by Jake
  77. math

    latoya has 3/4 of a bag of popcorn. If she eats half of the popcorn at the movie, how much does she have left?

    asked by anne
  78. Math

    kyle just started a new job that pays $7 per hour. He had been making $5 per hour at his old job. Kyle worked a total of 54 hours last month and made $388 before deductions. How many hours did he work at his new job?

    asked by Lucas
  79. Chemistry. Help please

    Calculate the pH of a buffer solution made by mixing 174 mL of a 1.68M trimethylamine (CH3)3N solution with 250 mL of a 1.08M trimethylammonia chloride, (CH3)3NHCl solution.

    asked by Stephanie
  80. Algebra

    Elena bicycles 5km/h faster than Dennis. In the same time it takes Dennis to bicycle 57 km, Elena can bicycle 72 km. How fast does each bicyclist travel. There was another variation I looked at of this, but the person who answered did not answer well

    asked by AlgebraDummy
  81. History

    1. As industry spread, the British and German governments initiated reforms to improve workers’ lives. What motivated Bismarck to enact reforms in Germany? What kinds of reforms were enacted in Germany and Britain? 2. 2. Write a brief, well-organized

    asked by Kathy
  82. Modern World Studies

    1. As industry spread, the British and German governments initiated reforms to improve workers’ lives. What motivated Bismarck to enact reforms in Germany? What kinds of reforms were enacted in Germany and Britain? Please give me information that answers

    asked by Julie
  83. Precalculus

    Doing some test corrections and not seeing this....Please help: Verify. csc^4x - cot^4x = 2csc^2x-1

    asked by Joseph
  84. chemistry

    In 24 g of a 7.8% by mass solution of CaSO4? How many grams of solute are present gCaSO4? how many grams of solvent are present g solvent?

    asked by Anonymous
  85. Chemistry

    how many milliliters of 0.250M KOH will react with 15.0mL of 0.305 M H2SO4?

    asked by prince
  86. 12th grade

    Objects on the moon's surface have an acceleration due to gravity one-sixth that on the earth's. What would the 40 kg boy weigh on the moon? (Round answer to nearest tenth.)

    asked by Jenna
  87. physics

    If 8.00 moles of a monatomic ideal gas at a temperature of 260 are expanded isothermally from a volume of 1.08 to a volume of 4.14 .Calculate the work done by the gas.Calculate the heat flow into or out of the gas.If the number of moles is doubled, by what

    asked by demitri
  88. economics

    charts for micro economics and macro economics

    asked by swathi
  89. hsi135

    After Nixon resigned from office, President Ford became President of the United States. One September 8, 1974, President Ford offered Nixon a presidential pardon for his crimes. He stated in his pardon that “It is believed that a trial of Richard Nixon,

    asked by Anonymous
  90. Physics

    A thing rod of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass 5.00kg is attached to the other end. The rod is pulled aside through an angle 30.0 degrees and released. What is the speed of the

    asked by Andrea
  91. Chemistry

    The odor of pineapple is due to the compound ethyl butyrate, which contains hydrogen, carbon, and oxygen. When 3.70g of ethyl butyrate are burned, 8.41g of carbon dioxide and 3.43g of water are the only products. Determine the empirical formula of ethyl

    asked by Steward
  92. english gramar

    oll noun question with santenc

    asked by ujjwal
  93. physics

    A cylinder with a moveable piston holds 3.00 of argon at a constant temperature of 300 . As the gas is compressed isothermally, its pressure increases from 101 to 125 .Find the final volume of the gas.Find the work done by the gas.Find the heat added to

    asked by demitri
  94. physics

    a motor turns 21.6 revolutions in 0.75 second. what is the angular speed of the motor in rpm? in radians per second?

    asked by joshua
  95. Calculus

    Find the derivative of y=5^(1-4x) lny=(1-4x)ln5 Can I split it? lny=ln5-4xln5 1/y dy/dx = -[4ln5/(4xln5)^2] dy/dx=-[4ln5/(4xln5)^2]y Thanks.

    asked by sh
  96. Math

    You have 36 stamps that you want to put into a stamp album. Stamp albums are made with either 4 to 6 pages. You need to decide which album you will use in order to have an equal number of stamps on each page. The question is: Choose one album that you will

    asked by Austin(3rd)
  97. Math

    Replace A,B,C with numbers so that: A*A=B B-A=C A+A=C

    asked by Layla
  98. math

    The cosat C, in dollars, of operating a concrete-cutting machine is modelled by C=2.2n^2-66n+655, where n is the number of minutes the machine is run. How long must trhe machine run for the operating cost to be at a minimum? What is the4 minimum cost?

    asked by ted
  99. Math

    A bag holds 8 yellow marbles and 5 orange marbles. How many and what color marbles would you add to the bag so that the probability of picking a yellow marble is 2/3?

    asked by Sarah
  100. chemistry

    1. Nitrogen gas and sodium liquid are produced by the decomposition of sodium azide NaN3 (s). what volume of nitrogen gas, measured at 25 C and 0.980 atm, is produced by the decomposition of 62.5 g of sodium azide? 2. A gas sample in a container with a

    asked by Helen
  101. Chemistry

    When a 1.350g sample of element X is heated in a stream of chlorine gas 6.67g of XCl3 are formed.1.) What(write) is a balance equation for the reaction using 'X' for the element? 2.) Calculate the atomic weight of X. 3.)What mass of X is left unreacted?

    asked by Joseph
  102. Physics

    Consider the resonant frequencies of a 1.78 m tube closed at one end at 24°C. a) Lowest resonant frequency = Hz HELP: You know the length of the tube. What else do you need in order to calculate the frequency of the lowest resonance of a tube that's

    asked by Angel
  103. Physics

    A satellite has a mass of 101 kg and is located at 1.99x10^6 m above Earth's surface. (a) What is the potential energy of the satellite at this location? (b) What is the magnitude of the gravitational force on the satellite? for potential energy, I was

    asked by Emily
  104. physics

    I need help finding an equation for: an asteroid revolves around the sun with a mean orbital radius twice that of Earth's. Predict the period of the asteroid in Earth years. Thank you.

    asked by annie
  105. physics

    A 10 kg block slides up a hill to a height of 5.8 m. If 414 J of thermal energy are generated, how fast was the block going at the bottom of the hill? 1 m/s

    asked by ami
  106. science

    This isn't a homework/quiz question, Well I guess it is homework, But I need to find out three types of friction in a machine I just built, but I don't know any types of friction. So I was wondering if someone could list the types and explain what they

    asked by Luna
  107. 7th grade

    what were the steps on mendels experiments with pea plants?

    asked by jacob
  108. physics

    A 10 kg block slides up a hill to a height of 5.8 m. If 414 J of thermal energy are generated, how fast was the block going at the bottom of the hill? 1 m/s

    asked by mas
  109. algebra

    6x-y=-4 2x+2y=15 Solve for y

    asked by x
  110. calc

    find linear approximations for each of the following and put a bound on the error of the estimate. 1. (7.985)^1/3 using f(x)=x^1/3 and a=8 2. (.9997)^100 using f(x)=x^100 and a=1 please help

    asked by C
  111. mechanics

    Q2. A block of massmrests on the left edge of a block of larger massM. The coefficient of kinetic friction between the two blocks is , and the surface on which the larger block rests is frictionless. A constant horizontal force of magnitude F is applied

    asked by sana
  112. chemistry

    After writing a balanced equation for the reaction between magnesium and hydrochloric acid, calculate the mass of magnesium needed to produce 90ml of hydrogen gas @ STP conditions.

    asked by Tiffany
  113. math

    bayside insurance offers two health plans. under plan A, giselle would have to pay the first 160 of her medical bills, plus 25% of the rest. under plan B, giselle would have to pay the first 180, but only 20% of the rest. for what amount of medical bills

    asked by june
  114. Chemistry HELP

    40.0 mL of 0.1880 M formic acid is titrated with 30.0 mL of 0.2010 M NaOH. Pka of formic acid is 3.8. What is the pH of the titration?

    asked by Kaylee
  115. 4th grade

    What is the greatest and least possible product you can make using the digits 1,3,5,6 and 7 in the multiplication problem below? Use each digit only once, _ _ _ X _ _ = ?

    asked by Esther
  116. calculus

    a particle moves along the x-axis in such a way that its acceleration at any time t is given by a(t)= 6t - 18. At time t = 0, the velocity v(t) = 24. and at time t = 1, the position x(t) = 20 i have to find the expression for the velocity and what values t

    asked by allan
  117. mechanics

    Q3. A skeet (a small disc) of massM is fired at an angle  to the horizontal with a speed v0. When it reaches the maximum height it is hit from below by a pellet of mass m (m < M) traveling vertically upward at a speed of v. The pellet is embedded in the

    asked by sana
  118. mechanics

    A wad of sticky clay of massmand velocity vi is fired at a solid cylinder of massM and radius R. The cylinder is initially at rest and is mounted on a fixed horizontal axle that runs through the center of mass. The line of motion of the projectile is

    asked by sana
  119. Math

    kyle just started a new job that pays $7 per hour. He had been making $5 per hour at his old job. Kyle worked a total of 54 hours last month and made $388 before deductions. How many hours did he work at his new job?

    asked by Lucas
  120. 5th grade math

    3/7 cup plus 1/4 cup equals how much of a cup of mixture.

    asked by Darb
  121. Geometry

    Given:JG/HG =KG/IG, ∠1 ≅∠2 Prove: EF ll HI /Users/szeringue/Documents/#6.doc

    asked by Jake
  122. 7th grade

    I am doing a battle chart in history class the I need to know who won the Gonzales battle Also i need the mexican leader and the texas leader and who won on in the battle of the concepcion and where the goliad battle took place and when it took place also

    asked by Abby
  123. statistics

    As a marketing analyst for Imperial Products, your task is to determine if a new product is worth marketing nationwide. The director of marketing has stated that at least 85percent of the public must express some desire for the product and, for those who

    asked by dillan
  124. Chemistry

    When a 1.350g sample of element X is heated in a stream of chlorine gas 6.67g of XCl3 are formed.1.) What(write) is a balance equation for the reaction using 'X' for the element? 2.) Calculate the atomic weight of X. 3.)What mass of X is left unreacted?

    asked by Joseph
  125. Algebra

    The equation y=-1777x+27,153 can used to predict the number of y gun deaths in the United States x years after 2000 that is x=0 corresponds to 2000, x=3 corresponds to 2003, x=6 corresponds to 2006, and so on. Predict the number of gun deaths in 2006 and

    asked by Michelle
  126. math

    Monique is using similar triangles in her graphic-design project. The triangles are isosceles. One has a base of 5 inches and legs of 7.5 inches. If the other triangle has a base of 14 inches, how long are the legs?

    asked by nicole
  127. Physics ( check answers)

    Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvf-mvi/change(t) I got 375 for that one...

    asked by Pablo
  128. History

    1. As industry spread, the British and German governments initiated reforms to improve workers’ lives. What motivated Bismarck to enact reforms in Germany? What kinds of reforms were enacted in Germany and Britain? Please give me information that answers

    asked by Anonymous
  129. Physics - Mechanics and Ocsillatory Motion

    Suppose that each of the three masses in the figure below has a mass of 5.05 kg, a radius of 0.0679 m, and are separated by a distance of 9.9 m. If the balls are released from rest, what speed will they have when they collide at the center of the triangle?

    asked by Sara
  130. chemistry

    How do you know that from this list, F2 is the strongest oxidizing agent? Mg2+ Mg F2 F- H+ Why is F- the weakest reducing agent from this list? Al3+ Al F2 !@#$%^&+

    asked by audrey
  131. Physics

    A satellite has a mass of 101 kg and is located at 1.99x10^6 m above Earth's surface. (a) What is the potential energy of the satellite at this location? (b) What is the magnitude of the gravitational force on the satellite? for potential energy, I was

    asked by Emily
  132. Physics

    Tom pushes a 50 kg up a ramp. The ramp is 6 m long and is set at a 15 degree angle. Starting with an initial speed of 1 m/s, Tom begins pushing the box up with a force of 250N. What will the final speed of the box be at the top?

    asked by Janet
  133. science

    which of the following are not examples of centripetal acceleration

    asked by bianca
  134. Finance

    A company requires the amount of $1,000,000 in 25 years to retire a bond issue. Assume they can earn 5 3/4% interest compounded daily. What amount would they have to pay quarterly to be able to retire this debt in 25 years?

    asked by ashley
  135. Chemistry

    A 2.4375 g sample containing a mixture of KClO3 and NaCl is heated and under goes a mass loss of 0.6191 g. What is the percent of KClO3?

    asked by Brittany
  136. physics

    This refers to passive solar collector, where solar radiation is used to heat water. It is therefore not on the solar cells. What characteristics should solar collectors have, to function in an optimal way? Why should these properties be fulfilled? If

    asked by bark
  137. grammar

    Diagram the simple subject and the simple predicate of each sentence. 1.Where do people use machines? people/use 2. Machines exist in homes, office buildings, and hospitals. Machines/exist 3. What amazing things machines can do! Machines/can do 4. Listen

    asked by TiffanyJ
  138. physics

    A tugboat pulls a ship with a constant net horizontal force of 5200 N and causes the ship to move through a harbor. How much work is done on the ship if it moves a distance of 3 km?

    asked by Devon
  139. grammar

    Diagram the simple subject, the simple predicate, and the direct object of each sentence. Diagram any indirect object as well. 1. People solve problems every day. People/solve/problems 2. A computer will provide answers. Computer/will/provide 3. Anidea

    asked by TiffanyJ
  140. Chemistry

    Consider the following reaction: H2O(l) + 3NO2(g) --> 2HNO3(l) + NO(g) What volume of NO (in L) is produced starting from 1.80 g of water and 11.5 g of NO2 at 300 K and 1 atm? (use R = 0.0821 L atm/mol K). I am completely confused :(

    asked by Lauren K.
  141. Chemistry

    a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is in the mixture?

    asked by Brittany
  142. Math

    A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. 1. What are the upper and lower control limits for a sample size of 100? 2. Recompute the upper and

    asked by jackie
  143. physics

    what happens if the cars on the roller coaster has too slow speed?

    asked by sjkal
  144. Physics

    During the pre-industrial era, what were the Carbon Dioxide levels like?

    asked by Raam
  145. Physics

    Consider the motion of a projectile. It isfired at t = 0. Its initial speed is 36 m/s and its initial projection angle is 55◦ from the horizontal. The acceleration of gravity is 9.8 m/s2 . y x What is the maximum height, h, of its tra jectory? Answer in

    asked by Bobby
  146. chemistry

    In the following equation, which species is the oxidizing agent? KCLO3 --> KCL + KCLO4 In the same are, How do you know that Cu is the reducing agent in this equation: AgNO3 + Cu ---> Cu(NO3)2 + Ag

    asked by audrey
  147. Calculus

    I need help to start this problem please, A company can sell 4500 pairs of sunglases monthly when the price is $5. When the price of a pair of sunglasses is increased by 10%, the demand drops to 4250 pairs a month. Assume that the demand equation is

    asked by sh
  148. Science

    What are the different types of seeds??(mustard,apples,etc)

    asked by Maci
  149. 11th grade

    I need help interpreting a quote...." in this world goodness is destined to be defeated ".

    asked by angelica
  150. physics

    when Chris slams a basketball he has a vertical leap of 1.46 meters. what must his initial vertical velocity be in order for him to reach this height?

    asked by marissa
  151. word problem

    bought a jumbo box of candy. by the time i got home kids ate 1/4 of candy. Put groceries away and another 1/2 of what was left was eaten. Before dinner ate another 1/6 of what was left. Now there are 10 candies left. How many chocolates were in the box to

    asked by kim
  152. algebra

    To solve the inequality -1/2 k is greater then or equal to -5, Danny multiplied both sides by the reciprocal of -1/2 . His solution was k is greater then or equal to 10.What mistake did he make? Danny checked his solution, but his check did not let him

    asked by lala
  153. college math/chemistry

    chemical reaction: E + S E~S E-S indicates a bidirectional reaction with different forward and backward rate constants. we can call these k1, k2, k3 and k4 in the above equation. Here, the enzyme binds to the substrate; the initial complex E~S then

    asked by Heather
  154. and

    A mass of 29kg is moving to the right at 15m/s. That mass collides with a 25 kg mass that is stationary. The masses stick together after the collision. What is the velocity of the masses after the collision? Answer

    asked by Anonymous
  155. Spanish

    Last 4 questions for a while--- 46. Quiero pasear en bote ______. a. en el lago b. en la selva tropical c. en las montañas en el invierno d. en las cataratas A? 47. Voy al mar ___ a. para la selva b. en las cataratas c. para bucear d. hace fresco C? 48.

    asked by mysterychicken
  156. Chemistry

    a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is in the mixture?

    asked by Brittany
  157. Science

    Light is shone on a metal and photoelectrons are emitted, what are the three things which might cause the photoelectron emission to stop

    asked by Ian
  158. geometry

    E And C are mid points od line AD and line DB; line AD is congruent to line DB and angle A is congruent to angle 1. What do you do to prove that ABCE is a isosceles trapezod ??

    asked by Anonymous
  159. calculus

    construct an isoceles triangle with an area of 100. what is the length of the base of the triangle which has the smallest perimeter? Prepping for a test, explanations please

    asked by C-help please asap
  160. Math

    Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 2, 5, 47, 11, 13, 48, 39, 36

    asked by Rena
  161. history

    Why did the Supreme Court rule that segregation was constitutional?

    asked by Brittany
  162. Statistics

    Given a population with a normal distribution, a mean of 100, and a standard deviation of 1, what value has an area of .1234 to its right?

    asked by Ed
  163. physics

    A 13.5 m long wire of mass 173 g is stretched under a tension of 269 N. A pulse is generated at one end, and 16.5 ms later a second pulse is generated at the opposite end. Where will the two pulses first meet?

    asked by Nikki
  164. algebra

    To write the initial equation of a straight line 6x - 5y - 4z + 8 = 0.6x + 5y + 3z +4 = 0

    asked by Andruxa
  165. Physics

    What would the volume of commercial butane be equal to given an air flow of 0.6 cubic metres/hr?

    asked by Harry
  166. Physics

    What is the amount of CO2 added to the earth's atmosphere each year from fossil fuels?

    asked by Bill
  167. Foreign Language - Latin

    This week we learned the phrase, amicus curiae, meaning friend of the court. A friend of the court is an expert who comes into the court and gives background information that the court may need for the case. The person is not involved in the case in any

    asked by Kathy
  168. physics

    why is static friction bigger than kinetic friction

    asked by Michelle
  169. economics 212

    Compare and contrast market systems and the role of an economist within these systems. 

    asked by Anita fields
  170. economics

    charts for cardinal and ordinal utility

    asked by swathi
  171. Calculus

    The base of a certain solid is the triangle with vertices at (-10,5), (5,5), and the origin. Cross-sections perpendicular to the y-axis are squares.

    asked by lila
  172. Business

    Fice companies contributed different amounts to a local charity. Which visual could best illustrate the percentage of all the monies collected that each company's contributed repreented? table bar chart line graph pie chart

    asked by terrie
  173. Chemistry

    I need help with this problem please Calculate the amount of reagents you take to prepare 200 g of 9.0% (m/m) glucose solution? I already found the mass of the glucose which was part one and got 18.0 g of glucose. Now they want the mass of water and I am

    asked by TT
  174. Math

    Input s ? ? 9 12 15 t 70 66 62 58 54 Write the rule as an equation. Use the equation to extend your pattern.

    asked by kelly
  175. English

    Posted by rfvv on Thursday, December 9, 2010 at 10:03pm. 1. We had to cook the turkey for six hours. 2. We had to cook the turkey in six hours. 3. We had to cook the turkey until six hours. 4. We had to cook the turkey from six hours. 5. We had to cook the

    asked by rfvv
  176. Math !!!!ASAP!!!!!

    How would you write a algerbraic expression depicting the cost of renting a car for (n) days if the daily charge is $24.98 plus 12 cents a mile?

    asked by Sumaiya
  177. 7th grade

    how do i solve a+3/5=24/25

    asked by ryan
  178. calc

    construct an isoceles triangle with an area of 100. what is the length of the base of the triangle which has the smallest perimeter? Prepping for a test, explanations please

    asked by Tim
  179. Finite Math

    I keep trying to set up this problem to solve it using the Simplex Method, but I can't seem to get the tableau set up correctly. If anyone could help, I would appreciate it: A baker has 150 units of flour, 90 of sugar, and 150 of raisins. A loaf of raisin

    asked by Christina
  180. john tyler

    a 751 diver drops from a board 9.10 m above the water's surface. How much kinetic energy does the diver have right before he hits the water?

    asked by shay
  181. English

    1. If it's not too big, I will take it. (What is the meaning of 'take' in this sentence? Does 'take' mean 'buy'?)

    asked by rfvv
  182. com

    I am trying to understand how to determine if a source is credible What do I look for to determine this

    asked by Hi
  183. biology

    discuss the difference between passive diffusion and active transport processes

    asked by symone
  184. algebra

    Does this look right? Mike runs twice as far as Jim, but Phillip runs three times as far as Jim. If the three of them run a total of 24 miles, how far does each man run? 2m + j = 24 3p + j = 24 I am so wrong aren't I? Can someone help me, please??

    asked by Jessica Fuentes
  185. Chemistry

    a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is in the mixture?

    asked by Brittany
  186. English

    How can we understand the complicated relationship between the Indians and Nick, and his father and Uncle George in Indian Camp by Ernest Hemingway? I included how uncle george calls the indian woman by an offending name, but I'm trying to see if there are

    asked by Anonymous
  187. math(7th)

    Can someone PLEASE help me:{ I never understand math. I always have a B in this class. ow do I find the unit rate of $11.49 for 3 packages?? I have to round ti the nearest hundredth if necessary.... :) thank ya!!!

    asked by Bethany :]
  188. 6th grade

    I asked one of the guards a question then iI relized he was made of wax! I need help on where to put the semicolons and colons

    asked by Shelly
  189. chem

    Calculate the number of liters of hydrogen, measured at STP, that can be produced from the reaction of 0.155 mol of aluminum according to the following unbalanced chemical reaction equation. i got .193 L of H2 but it was wrong. i only have one submition

    asked by hannah
  190. geometry

    E And C are mid points od line AD and line DB; line AD is congruent to line DB and angle A is congruent to angle 1. What do you do to prove that ABCE is a isosceles trapezod ??

    asked by Anonymous
  191. Math

    Dina earned 1/4 for baby sitting and 1/2 for washing the dishes. How much money did she NOT earn from $25.00?

    asked by Hannah
  192. Chemistry

    I am having trouble getting this starting and figuring out the correct steps...the problem is Calculate the final concentration of the solution in each question 1) Water is added to 0.270 L of a 6.00M HCl solution to give a volume of 3.00 L (Express

    asked by TT
  193. Math

    Exprees each series using sigma notation. 3+6+9+12+15

    asked by Zerick
  194. java programming

    Enhance bank account class by adding preconditions for the constructor and the deposit method that require the amount parameter to be atleast zero, and a precondition for the withdraw method that requires amount to be a value between 0 and the current

    asked by JJ
  195. algebra

    The function H described by H(x)=2.75x+71.48 can be used to predict the height in centimeters of a woman whose humerus is x centimeters long what is the height of a woman whose humerus is 35 centimeters long?

    asked by Michelle
  196. English

    1. Mom had to check the timer every 10 minutes. 2. Mom had to check the timer every 10th minute. (Can we use both expressions?) 3. How about going at 6:00 at the art center. 4. How about coming at 6:00 at the art center. 5. How about arriving at 6:00 at

    asked by rfvv
  197. math

    Andy had 20% fewer marbles than Henry. When Andy gave 80 marbles to Henry, the numbers of marbles he had left was half of what Henry had. How many marbles did Andy have in the begining? Please help me

    asked by Katherine
  198. physics

    If two marbles having mass of 27.7 grams and of 3.6 grams have stuck together where do they land and how much kinetic energy would be lost ?

    asked by Eduardo
  199. math

    80% of 30 questions were correct, write 80% as a reduced fraction would it be 2 2/3

    asked by jill
  200. Physics

    A mass-on-a-spring system has a spring constant k = 384 N/m and a mass m = 0.51 kg. (a) If it is given an initial displacement of 0.22 m and then released, what is the initial potential energy of the oscillator? = 9.29 J (b) What is the maximum kinetic

    asked by Jillian
  201. math

    if a person drove 364 miles in 7 hours how many miles did they drive in 1 hour

    asked by leandra hines
  202. chem

    Calculate the number of grams of magnesium nitride necessary to produce 2.02 L of ammonia gas at STP. I got 4.55g for the upper question which is correct but idk how to do the bottom one: How many moles of magnesium hydroxide can also be formed? Mg3N2(s) +

    asked by rebekah
  203. economics

    charts for inductive and deductive study

    asked by swathi
  204. geomertry

    Find the range of possible values for x 3x-5 27

    asked by Tonya
  205. economics

    charts for economic and non economic activities

    asked by swathi
  206. Math

    Prove this identity. State any restrictions on the variables. sin x/(tan x)= cos x

    asked by Emily
  207. algebra

    a factory just outside of newyork city produces 40 packs of gum in 4.2 seconds,each containing 6 sticks of gum. Approximately how many total sticks of gum does the factory produce in one minute?

    asked by jaelen
  208. geometry

    if ab=3x+11 bc=2x+19 and cd=7x-17 find x

    asked by robin
  209. Math Finite

    A two card hand is dealt from a standard deck. What is the probability of drawing at least one face card?

    asked by Ericka
  210. Analytical Chemistry

    A photon of an X-ray radiation has a wavelength of 5.50 Å. For the radiation, calculate the (a)frequency in Hertz, (b)the energy in Joules, (c) the energy in electron volts (eV) and (d) the energy in kJ/mol.

    asked by Kelley
  211. math

    Luis put $800 in his saving account whichs pays 6% annual interest How much will he have in his account in a year if the interest is compounded quarterly? what is the first quarter principle?

    asked by carolyn
  212. 3rd grade

    What is a number sentence that shows the same product as the product of 9 and 2

    asked by Richard
  213. statistics

    Using the standard normal distribution, find the probability that z is less than -1.78 (Points: 6) 0.0375 0.9625 0.9319 0.0384

    asked by sonny
  214. 10th grade

    Suppose that a kid was casually sledding down a gentle slopping hill going 6 feet per second. Then, he hit a steeper part of the hill and started accelerating at a rate of 1.2 feet/second squared. At the bottom of the steep part of the hill he was going

    asked by Anna
  215. ant101

    How does the identification of cultural universals impact our understanding of what it means to be human? How does the search for universals help us better understand human cultural behavior? What examples from your own culture can illustrate the ideas

    asked by kim
  216. Chemistry

    A protein found in some types of wood-rotting fungi is 0.40% copper by mass. Each protein molecule is known to contain 4 copper atoms. What is the approximate molecular weight of thos compound?

    asked by Dee
  217. Science

    1. Molten rock from the mantle flows out of active ___________. 2. This type of crust is generally 5-8 KM thick. _____________. 3. The inner and outer cores make up this layer of the earth. ______________. 4. The lightest materials make up the outermost

    asked by Cheyenne
  218. 7th grade

    i need help with simple interest math homework.NOW!

    asked by bob
  219. English

    1. If I didn't wear a school uniform, then I would be happy every day. 2. If I didn't wear a school uniform, I would be happy every day. (Which one is correct? Are both OK? Which one is popular? What is the difference between the two sentences because of

    asked by rfvv
  220. social studies

    how did geography influence the developement the eastern hemisphere

    asked by sacy
  221. calculus

    find linear approximations for each of the following and put a bound on the error of the estimate. 1. (7.985)^1/3 using f(x)=x^1/3 and a=8 2. (.9997)^100 using f(x)=x^100 and a=1 please help explain please too

    asked by C
  222. calculus

    find the derivative of y= sigma (top number is x and bottom number is square root of x) e^t/t dt please and thank you

    asked by sam
  223. Algebra one story problem help please.

    in 1993, 2.00 Million females particpaited in U.S Highschool sports, by 2003, the number increased to 2.86 Mill. A) Write an equation in slope-intercept form that gives the number of females participaiting in US. highschool sports, ( in Millions) as a

    asked by Allyson
  224. english

    "That's one for the medical journal, George," he said. "Doing a Caesarian with a jack-knife and sewing it up with nine-foot, tapered gut leaders." I would like to include this quote in my paper, but am not sure how to do it, since it already contains

    asked by Anonymous
  225. Calc

    express 3ln(r)- 5ln(s)+ 7ln (t) as a single logarithm.

    asked by Dan
  226. Math

    Find the measure if the central angle that you would to represent each percent in a circle graph. Round to the nearest degree. 50%

    asked by Please help
  227. algebra

    4. Write an equation for the line through the points (2, -6) and (-1, -4).

    asked by Patrick
  228. Chemistry

    a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is in the mixture?

    asked by Brittany
  229. Law

    For a cross examination, can you question a witness about someone else's testimony?

    asked by Brie
  230. statistics

    give three characteristics of r

    asked by marbear
  231. coding

    If a patient suffers multiple burns, describe the correct coding sequence.

    asked by red
  232. History

    Can you please find any documents (pictures, quotes, info) for the following question: Compare and contrast the economy and politics that impacted the global economy of Europe during the Middle Ages and the Renaissance. Thank You

    asked by Josh
  233. math

    what multiplication facts can be found using the arrays 2*9 and 5*9?

    asked by susie
  234. English

    1. We had to cook the turkey for six hours. 2. We had to cook the turkey in six hours. 3. We had to cook the turkey until six hours. 4. We had to cook the turkey from six hours. 5. We had to cook the turkey after six hours. (#1 is right? What about the

    asked by rfvv
  235. Chemistry

    A protein found in some types of wood-rotting fungi is 0.40% copper by mass. Each protein molecule is known to contain 4 copper atoms. What is the approximate molecular weight of thos compound?

    asked by Dee
  236. Math

    Translate: The product of 16% and some number?

    asked by Michelle
  237. algebra

    Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 mph and train B at 63 mph. Train A passes a station at 11:10 AM. If train B passes the same station at 11:40 AM, at what time will train B catch up to train

    asked by Michelle
  238. Math

    11/14 x 7/12

    asked by Ciara
  239. 5th grade

    how to do a double line graph with 2 superbowl teams scores with their mode median,and range for the first seven games. this is so hard for fifth grade. i need help

    asked by deeandra
  240. Spanish

    40. Me gustaría ver ______ profesor de español después de la clase. a. a mí b. a mi c. mi d. señor C? Either that or B, I think... 41. Los estudiantes no tienen mucha tarea hoy. ______ ir al campo. a. Piensan b. Pensamos c. pienso d. piensas B? 42.

    asked by mysterychicken
  241. MATH

    HOW DO YOU DO INPUT & OUTPUT DIVISION Tables

    asked by ASHLEY
  242. English

    I have a few last doubts. Thank yo very much for your corrections. 1)The narrator can tell a story using a first- or a third-person. An internal narrator tells of his own personality. (or tells about?) 2) The story deals with (and not tells about) a family

    asked by Franco
  243. math

    what is 93,042-54,878: what is 153,911-68,099; what is 49,499*5; what is 61,711-30,490; what is 29,038*72; what is 22,675*30

    asked by sarah smith
  244. economics

    charts for positive and normative study

    asked by swathi
  245. Geography

    What is nomadic herding?

    asked by Cheryl
  246. chemistry

    2 NO(g) + 1 O2(g) 2 NO2(g)

    asked by Anonymous
  247. Math help

    Losing your bags during airline travel is not all that uncommon. Recently, an airline was cited for losing customers' baggage 8% of the time. A test is conducted by randomly selecting 20 customers for that airline and observing whether they had lost their

    asked by Mariah
  248. economics

    chjarts for economic and non economic activities

    asked by swathi
  249. math

    Andy had 20% fewer marbles than Henry. When Andy gave 80 marbles to Henry, the numbers of marbles he had left was half of what Henry had. How many marbles did Andy have in the begining? Please help me

    asked by lesly
  250. math

    how do you draw a graph of a relation y=-x^2+4 and use appropriate transformation starting with y=x^2

    asked by ted
  251. history

    what was the soical structure during the Renaissance in Europe?? please help asap!!!! thankssss:)

    asked by Anonymous
  252. English

    1. He can play the guitar. 2. He can play guitar. (Which one is correct? Are both OK?)

    asked by rfvv
  253. English

    Hello. I will really appreciate it if you will help me with some language problems. 1)Is an article necessary in the following sentences: "He gave his first press conference as... a)(?)president. b)(?)president of Zimbabwe. c)(?)new president of Zimbabwe.

    asked by Ilma
  254. english

    what are some facts about satire,lampoon,an d parody?

    asked by lauren
  255. Analytical Chemistry

    A photon of an X-ray radiation has a wavelength of 5.50 Å. For the radiation, calculate the (a)frequency in Hertz, (b)the energy in Joules, (c) the energy in electron volts (eV) and (d) the energy in kJ/mol.

    asked by Kelley
  256. culinary

    What is a salary for s licensed chef?

    asked by Rhonda
  257. Pre-Calc

    I am stuck solving this problem, any help please..Many thanks find all numbers x that satisfy the given equation ln(2x) ------- =2 ln(3x)

    asked by Roy
  258. Physics

    A 24 inch string is wrapped around the 1/8 inch radius axis of a yo yo. Starting from rest the yo yo descends with a constant angular acceleration of 4 rad/second squared. How long will it take the string to completely unwind?

    asked by Andrea
  259. Pre-Calc

    Can someone show me how to do this please. I am stuck. find a number x such that e^2x – 12e^x =13

    asked by Roy
  260. Math/Fractions

    Tanisha has 2 new kittens. Together they weigh 3 5/8 pounds. If the male kitten weighs 5/8 pound more than the female kitten, how much does the male kitten weigh?

    asked by Coco
  261. biochemistry

    I have three questions. I don't even know where to begin. 1. a) If an in vitro fatty acid synthesizing system is supplied with [2-14C]-acetyl CoA as the only source of radioactive label along with all other necessary cofactors/reactants for net fatty acid

    asked by an
  262. math

    the rectangle shown above has a total of 2808 square feet. the length is 78 feet. what is the width

    asked by amber
  263. 4th grade

    Jorge and Hector like to play marbles.Jorge had 7 more than four times the number of marbles that Hector had. Together they had 37 marbles. How many marbles did Jorge have?

    asked by maria
  264. Chemistry

    How to find the molarity of NaOH when the given is 0.1803 grams of KHPg/mol molecular w. of KHP is 204.2 9.7 ml NaOH

    asked by prince
  265. English

    1. Our team practiced soccer every day. 2. Our team practiced the soccer every day. (Which one is OK? Are both grammatical? Do we have to eliminate 'the'?)

    asked by rfvv
  266. anthropology

    What are centralized political systems and how do they operate?

    asked by Anonymous
  267. Human Service

    Where can I find the names of Cognitive Disease I have checked the library, most popular search engines There are 3 diseases Please help

    asked by Mary
  268. grammar

    can you help me in semicolons, colon snd commas

    asked by Shelly
  269. geometry

    E And C are mid points od line AD and line DB; line AD is congruent to line DB and angle A is congruent to angle 1. What do you do to prove that ABCE is a isosceles trapezod ??

    asked by Anonymous
  270. math

    what multiplication fact could you use to find a number that can be divided evenly by 8 and by 9

    asked by abby
  271. math

    solve the equation for b. -12.27-0.9b=5.6(b+2.8)

    asked by JESSICA
  272. Not a school subject. its for a contest.

    HELP!!! I HAVE NO IDEA WHY I WANT TO BE MISS VFW EXCEPT I CARE FOR THE TROOPS AND I HAVE FRIENDS IN THE ARMY.

    asked by Alycia
  273. Math

    A population is 200 in the year 1825, 252 in 1850, and 318 in 1875. What is the p(t) equation? I see that the population increases 26% over each 25-year period but I can't figure out the equation.

    asked by Hannah
  274. English

    1. They had a sleepover at Susan's house yesterday. (Is 'sleepover' popular among teenagers in the United states?)

    asked by rfvv
  275. calculus

    Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=4 x^2, x = 1, y = 0, about the x-axis

    asked by john
  276. math 5thgrade

    80% of 30 answers were correct write 80% as a reduced fraction? would it be 2 2/3?

    asked by jill
  277. com 155 review

    I am supposed to provide five examples of how the reviewer of the movie Burlesque used adverbs and five examples of the use of adjectives. I also need to decide if they used them effectively, why or why not. (yes, I know the last question I will have to

    asked by Leigh
  278. engineering science

    The power in a resistor RLOAD of 10 Ω when connected to a 100 volt supply is measured using a voltmeter and ammeter. There are two possible ways of connecting the meters as shown in FIGURE 2. The resistances RA and RV represent the internal resistances of

    asked by David
  279. inflection points

    How can I find the number of points of inflection for a function whose second derivative is .5 + cosx - e^-x on the interval x is greater than or equal to 0 and less than or equal to 20?

    asked by Anonymous
  280. science

    ive been trying to find a report for 5th grade greenhouse effect science. how can i type it to find it?

    asked by molly
  281. algebra

    what is this mean n-7=2

    asked by victoria
  282. Calculus

    I have a cone and water is leaking from it at a rate of sqrtV*-2 how do i find out how long it takes

    asked by Thomas
  283. math

    drawing a black checker from a bag of 9 black checkers and 6 red checkers, replacing it, and drawing a red checker

    asked by jesse
  284. Physics

    forces of 185N and 245N act east and south respectively on an 80 kg mass.If the force of friction is ZERO , find the accleration of the mass.

    asked by Jo
  285. Calculus

    Find the volume of the solid formed by rotating the region enclosed by x=0, \ x=1, \ y=0, \ y= 8 +x^{2} about the x-axis.

    asked by Anonymous
  286. spanish

    what does las uno voy a la clase ciencia means?

    asked by Annie
  287. geometry

    Find X if B is the midpoint of AC, AB=18 and AC=10x-4

    asked by Cher
  288. calc

    construct an isoceles triangle with an area of 100. what is the length of the base of the triangle which has the smallest perimeter? Prepping for a test, explanations please

    asked by C-help please asap
  289. Calc

    Solve the equation for x. arcsin(sq. rt.(2x)) = arccos(sq. rt(x))

    asked by Erica
  290. English

    1.The new magazines on the kitchen table (are, is) for the hospital waiting room. 2.My list of favorite paintings (include, includes) Starry Night and the Mona Lisa. 3.You and your cousins (are, is) invited to the party. 4.His mother (teach, teaches) math.

    asked by Clayton
  291. Math hw

    A corporation has 24 shareholders holding 4140 shares. The founder of the company retains 50 % of the companies shares. The remaining shares are equally divided among his 23 grandchildren. By the company's articles of incorporation, the voting weight for

    asked by Maya
  292. geometry

    In triangle DEF, A(2,3) is the midpoint of DE, B(4,1) is the midpoint of EF, and C(6,2) is the midpoint of DF. What are the coordinates of D, E, and F?

    asked by billy
  293. English

    Thank you very much! A very last thing. The story deals with (a family..) ... is incorrect? The novel deals with/tells about ... are they both possible?

    asked by Franco
  294. 5 th math

    what is 1/8= ? Equivalent fraction THIS IS WHAT I GOT ? = 2/16 ,4/32 AND 8/40. CAN YOU PLEASE! CHECK IT FOR ME MS. SUE THANKS!!

    asked by pat
  295. Math

    Eric has a straight garden path which is 2' x 15'. He wants to cover it with tiles that are each 1' x 2'.How many ways can he do this?

    asked by Claire
  296. Genetics

    Need help figure out the order of GENES. Okey here is the info Bacterial cells of genotype pur- pro+ his+ were transduce with P1 bacteriophage grown on bacteria of genotype pur+ pro- his-. Transductants containing pur+ were selected and tested for the

    asked by Amphee
  297. math

    Write the relation for a parabola that satisfies each condition: The graph of y=x^2 is stretched vertically by a factor of 3/2, then translated left 4 units.

    asked by ted
  298. math

    Each expression is a perfect square. assuming b is greater than 0, find b. A. y=x^2+bx+49 B. y=x^2+bx+1

    asked by ted
  299. math

    What value oc C makes the expression a perfect square? A. x^2+bx+c B. x^2+0.16x+c

    asked by ted
  300. Culinary Arts

    HOW MUCH MONEY DO YOU NEED TO START UP A BUSINESS IN CULINARY?

    asked by Rhonda
  301. English

    I forgot to include the following sentences. Thank you very much. 1) You can do the exercises either on a foolscap or on the photocopy. 2)I like wearing baggy, comfortable clothes. I usually wear diamond-patterned trousers under a plain zip-up sweatshirt.

    asked by Franco
  302. chemistry

    calculate the amount of reactants required to produce 150g of H2O in CO2+H2O

    asked by Mac
  303. calc.

    The centripetal acceleration of a particle moving in a circle is a=V^2/r where V is the velocity and r is the radius of the circle. Approximate the maximum percent error in measuring the acceleration due to errors of 3% in velocity and 2% in radius.

    asked by Nancy
  304. finance

    At age 5, how much would you have to save per month to have $1 million in your account at age 65, if your investment rate was 10% per year? Assume no taxes and compounding on a monthly basis.

    asked by bob
  305. math

    How to find lcm using prime factoriazation

    asked by Fghl
  306. math

    How do I find the area if all four sides are not even

    asked by Anonymous
  307. Algebra one help please?

    Find the missing coeffectient in the equation of the line. -4x+by=10 that passes through (2,3) Could someone explain please.. Thanks.

    asked by Allyson
  308. Math !!!!ASAP!!!!!

    How would you write a algerbraic expression depicting the cost of renting a car for (n) days if the daily charge is $24.98 plus 12 cents a mile?

    asked by Sumaiya
  309. english/history

    what was the social structure during the european renaissance?

    asked by Anonymous
  310. biology

    define PI-PCL and indicate which phospholipids it hydrolizes

    asked by symone
  311. english

    whats the crossing the threshold for shrek the mivie?

    asked by ana
  312. math

    maria wants to buy concert tickets for her mom and dad.one ticket is $48.she is going to split the cost of the tickets with her 5 brothers.how much will she have to pay?

    asked by julian
  313. need help

    I have this equation y+x=-7 I have to graph my answers to find out what my y is. I have tried everything, and I cannot get my points to cross. Any help would be great.

    asked by Laurie
  314. math

    how do i divide 2/5 of an acre into 3 parts

    asked by leshei
  315. Math

    Hello I am trying to solve this, and can not figure it out: Can you help? f(b+9) Thanks,

    asked by Nikol
  316. math

    How do you square a fraction like 4/3 squared?

    asked by jill
  317. MATHS

    -12.27-0.9b=5.6(b+2.8) -12.27 - 0.9b = 4.6b + 15.68 15.68 - 12.27 = 4.6b + 0.9b 3.41 = 5.5b 3.41/5.5 = b ? = b

    asked by JESSICA
  318. high school/vocabulary studies

    In which year did pocahontas die? A. 1542 b. 1617 c. 1668 d. 1710

    asked by Dawn shay
  319. business

    Which three areas do you believe to be most prevalent, or which three areas have the greatest consequence in the workplace?

    asked by Anonymous
  320. math

    an old tv is 27 inches the new tv is 42 inches.... how much bigger is the new tv that the old tv...if the odl tv has 27 inches and the new tv has 42 inches

    asked by Katherine
  321. science

    what is the meaning of particels and solutions

    asked by holly
  322. spanish

    how do you say history in spanish

    asked by jay
  323. math

    napoleon 1 was born in 1769 how old was he when he was crowned in france 1804 {equation]

    asked by cooper
  324. Calc

    Verify each identity. a) arcsin(-x) = -arcsin x; abs. val. (x) is less than or equal to 1. b) arccos(-x) = pi - arccos x; abs. val. (x) is less than or equal to 1.

    asked by Erica
  325. Math help

    A corporation has 30 shareholders holding 2900 shares. The founder of the company retains 50 % of the companies shares. The remaining shares are equally divided among his 29 grandchildren. By the company's articles of incorporation, the voting weight for

    asked by Maya
  326. college

    What are the pros and cons of matching clients and clinicians in terms of gender, ethnicity, disability, sexual orientation, or language? Does matching people along those lines ensure common experience and easy bonding?

    asked by Tina
  327. culinary arts

    how do you make a budget for culinary if you don't have a figure amount to start out with?

    asked by Rhonda
  328. Business math

    254 trade discount series 11/10/11 What is the trade discount and what is the net price of the kennel?

    asked by Thomas
  329. adult education

    Learning the skills to achieve your financial long term goals will help you to be a more responsible adult. is Future Tense the correct verb tense in this sentence and is the word achieve the correct verb?

    asked by Anonymous
  330. math

    How do you describe the transformations that were already applied and use them to write a relation for a parabola?

    asked by ted
  331. English

    Can you check these sentences,please? Thank you very much. 1) How big/large is the population of New York? Are they both correct? 2)He was dismissed last year and he hasn't found a job yet. 3) He's been working for three years as a mechanic at an assembly

    asked by Franco
  332. math

    how could I solve for x in this problem (3x+5) to the 7/3 + 22=150

    asked by Eneudy,George Washington high school
  333. math

    Andy had 20% fewer marbles than Henry. When Andy gave 80 marbles to Henry, the numbers of marbles he had left was half of what Henry had. How many marbles did Andy have in the begining? Please help me

    asked by lesly
  334. Health care

    I need orginal work on this question:• What is one strength you see in the current U.S. health care system? What is one weakness you see? List and describe one of the challenges facing the U.S. health care system.

    asked by david d
  335. math

    what fraction strips would you use yto find the sum of 3/8 and 4/8? explain

    asked by jordan
  336. physics

    I need to design an object that will sink when placed in a 20-gallon tank of room temperature water. After 30 seconds all or part of the object must resurface and remain floating. Closest to 30 seconds wins. I may not use Alka-Seltzer or any similar

    asked by SUSU
  337. Algebra one :)

    How do I write these following equations into standard form? Which I know is AX+BY=C 1) 5y-6=2x+3 Do I subtract? What do I do? could someone help me? Thanks!!

    asked by Allyson
  338. math

    how do you solove I=$440 P=??? R=7% T=4 years

    asked by bob
  339. Literature

    Can Shakespeare really transfer successfully to the screen? 500 essay

    asked by Hamlet
  340. physics

    Objects that allow bulbs to light when inserted in a circuit

    asked by khadijah
  341. mathematik

    wie bestimme ich den drehpunkt von zwei dreiecken?

    asked by abonumilian
  342. math

    azul decided to sell cookies to raise money for the needy. she spent $9 at the supermarket for the ingredients. azul then sold 43 cookies at $0.76 each. the profit from the cookies was then donated to the needy. how much did she donate?

    asked by julian
  343. biology

    discuss the function of an active adenylate cyclase

    asked by symone
  344. Nuclear Physics

    If humans produce a 10mm wavelengh, what is their frequency? Find the energy emitted from humans off of the wavelength given.

    asked by Raam
  345. math

    what is the simplest form for the fraction 130 over 220

    asked by yasmine
  346. Math

    28/100 = x/360 x=

    asked by Please help
  347. math

    subtracting fractions with different denominators. Change answer to simplest form: 3/9 - 1/4

    asked by matthew
  348. 4th grade

    do u know how to bulid the alamo ?well me nither so lets find out

    asked by samantha
  349. 6th grade

    What steps do we use to change 1-1/2 cups in half?

    asked by Marissa
  350. science

    how many grams of water do you have if it takes 3000j to raise the temperature from 21c to 100c

    asked by Toni
  351. history

    how did former president nixon pardon impact the united states?

    asked by mike
  352. Math

    How can you take 1 away from 19 and leave 20?

    asked by Jay
  353. bio

    what is the edge effect? (as part of group living)

    asked by Allie
  354. bio

    what is prey flushing?

    asked by Allie
  355. English

    1.The clowns and jugglers (has, have) always been my favorite performers. 2.Neither pencils nor an eraser (are, is) permitted. 3.All of the boats in the harbor (belong, belongs) to the village. 4.Either the wall clock or our wristwatches (tell, tells) the

    asked by Tracy
  356. SOCIAL STUDIES

    What qualifications are needed for a country to become a world power?

    asked by Matt