Questions Asked on
November 18, 2010

  1. college chemistry

    To dilute a solution from 0.600 M to 0.100 M, the final volume must be A. 1/6 the original volume. B. 0.7 L. C. More information is needed to answer this question. D. 6 times the original volume. E. 60 L.

    asked by Jake
  2. Physics

    A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the ballon is filled at atmospheric pressure and 300 K, what is its radius at liftoff?

    asked by Y0gi
  3. Chemistry

    A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final gas density is 0.7282

    asked by Natalie
  4. physics

    a child is sliding on a sled at 1.5m/s to the right. You stop the sled by pushing on it for 0.50 s in a direction opposite to its motion. If the mass of the child and the sled is 35kg. what average force do need to apply to stop the sled. Use the concepts

    asked by Nina
  5. Physics

    Three children are trying to balance on a seesaw, which consists of a fulcrum rock, acting as a pivot at the center, and a very light board 6.0 long . Two playmates are already on either end. Boy A has a mass of 50 , and girl B a mass of 35 . Where should

    asked by Kyla
  6. physics

    A 0.38-kg mass attached to a spring undergoes simple harmonic motion with a period of 0.63 s. What is the force constant of the spring?

    asked by aok
  7. Chemistry

    help please! At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?

    asked by Alyssa
  8. physics

    Child weighs 29 kg on a swing supported by two chains. Another child pulls swing back to the chains to make 30 degree angle with the vertical. What force is exerted by each chain

    asked by anonymous
  9. calculus

    Coroners estimate time of death using the rule of thumb that a body cools about 2 degrees F during the first hour after death and about 1 degree F for each additional hour. Assuming an air temperature of 78 degrees F and a living body temperature of 98.6

    asked by bob
  10. geometry

    IF AB=10 UNITS AB= 8 UNITS AC= 12 UNITS ED= 4.5 UNITS IF ANGLE AED= 100 DEGREES WHAT IS THE MEASURE OF ANGLE DEC

    asked by joana
  11. physics

    A 52 g mountain climber, start from rest, climbs a vertical distance of 730 m. At top, she is again at rest. In the process, her body generates 4.1*10^6 J of energy via metabolic processes. Her body acts like a heat engine with efficiency ( W/Q_h.) W is

    asked by david
  12. Chemistry 101

    A flask containing a mixture of CH4(g) and NH3(g)is cooled. At -33.3c a liquid begins to form in the flask. What is the liquid? NH3(g) or CH4(g)

    asked by Evette C.
  13. trig

    find exact value using sum or differnce equations. tan(19pi/12)

    asked by chris
  14. Chemistry

    How many liters of O2 gas, measured at 772 mmHg and 20 degrees C, are required to completely react with 2.4 mol of Al?

    asked by Kelsey
  15. physics

    A 25 kg chair initially at rest on a horizontal floor requires 393 N horizontal force to set it in motion. Once the chair is in motion, a 301 N horizontal force keeps it moving at a constant velocity. a) Find the coefficient of static friction between the

    asked by Nate
  16. physics

    A 905 kg test car travels around a circular track with a circumference of 3.25 km. If the magnitude of the force that maintains the car's circular motion is 2140 N, what is the car's tangential speed?

    asked by Devon
  17. physics

    A ball is thrown straight upward and returns to the thrower's hand after 2.20 s in the air. A second ball is thrown at an angle of 31.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown

    asked by jennifer
  18. physics

    The position of a mass oscillating on a spring is given by x = (5.6 cm) cos [2πt / (2.03 s)]. (a) What is the period of this motion? (b) What is the first time the mass is at the position x = 0?

    asked by aok
  19. chem

    The bottom of a box has a surface area of 31.4 cm2. The mass of the box is 47.1 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests? how do i solve this?

    asked by Jon
  20. english

    What type of literary or dramatic works did William Shakespeare write? burlesque pantomime satire Restoration comedy heroic drama Elizabethan drama autobiography

    asked by danny
  21. Calculus

    Use a linear approximation (or differentials) to estimate the given number. (32.06)^4/5

    asked by Amy
  22. chemistry

    A possible mechanism for the overall reaction Br2 (g) + 2NO (g) -> 2NOBr (g) is NO (g) +Br2 (g) (equilibrium arrows: on top it says k1 and on bottom k-1) NOBr2 (g) (fast) step 1 NOBr2 (g) + NO (g) ->(on top of arrow k2) 2NOBr (slow) step 2 the question:

    asked by ben
  23. Pre Calc

    7. The Sandusky Little League uses a baseball throwing machine to help train 10-year old players to catch high pop-ups. It throws the baseball straight up with an initial velocity of 48 ft/sec from a height of 3.5 ft. a. Find an equation that models the

    asked by Anonymous
  24. math

    I need to simplify the following rational exponent: (64n^9)^2/3 I've done the following but don't think this is right: = 3|64n^18 = 4n^2.62 I don't know how to type in the root symbol so I used | to mean root. Can someone please verify this and if

    asked by Dania
  25. 12th grade

    The kinetic energy of a 50 newton object resting on the edge of a cliff 30 meters high is?

    asked by erik
  26. physics

    After 10.0 s, a spinning roulette wheel at a casino has slowed down to an angular velocity of +1.74 rad/s. During this time, the wheel has an angular acceleration of -5.1 rad/s2. Determine the angular displacement of the wheel.

    asked by michelle
  27. trig

    find exact value cos(13pi/15)cos(-pi/5)-sin(13pi/15)sin(-pi/5)

    asked by chris
  28. english

    root word :lantry The definition of root is: worship A word using this root is: autolantry the definition of autolantry ,I cant find it ,can you help me look it up the definition or find another word using the root .thank you

    asked by joy
  29. chem class

    The value of Keq for the following reaction is 0.25: SO2 (g) + NO2 (g) SO3 (g) + NO (g) The value of Keq at the same temperature for the reaction below is __________. 2SO2 (g) + 2NO2 (g) 2SO3 (g) + 2NO (g) answer is 0.25 how do i figure this out?

    asked by richy
  30. physics

    The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.570·mg is then applied at upward angle è = 22°. (a) What is the magnitude of the acceleration of the block across the floor if (a) ìs = 0.600 and ìk

    asked by Will
  31. Physics

    A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5

    asked by Kevin
  32. Physics

    When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.370 m/s2. Block 1 has mass M, block 2 has 5M, and block 3 has 5M. What is the coefficient of kinetic friction between block 2 and the table? block 1 is

    asked by Will
  33. english

    I think that paragraph 3 is more effective than paragraph 1 because it is structured in a better manner and has better rhythm than paragraph1. It also has better structures sentences than paragraph 1. For example in paragraph 1 sentences like, ‘My Aunt

    asked by rene
  34. science

    what is the momentum of a 57 kg cheetah running north at 27 m/s?

    asked by ada
  35. nonfiction

    What does seattle say about integrating white and native american cultures?

    asked by shirley
  36. Geometry

    Write an indirect proof that an obtuse triangle does not have a right angle. Given: Triangle RST is an obtuse triangle. Prove: Triangle RST does not have a right angle. Let angle S be an obtuse angle. Assume Triangle RST has a right angle. Let angle R be a

    asked by chica
  37. Physics

    The 1.4 kg, 40-cm-diameter disk in the figure below is spinning at 260 rpm. How much friction force must the brake apply to the rim to bring the disk to a halt in 4.5 s?

    asked by sara
  38. 5th grade math

    What didgit is in the thousands place 1,234.5678 would it be 1 or 7

    asked by Heather
  39. chemistry

    What volume of O2 at 912 mmHg and 33 degrees C is required to synthesize 11.0 mol of NO?

    asked by Kelsey
  40. physics

    A girls sits on a tire that is attached to an overhanging tree limb by a rope. The girl's father pushes her so that her centripetal acceleartion is 3.8 m/s2. If the length of the rope is 3.3 m, a) what is the girl's tangential speed? b) If the magnitude of

    asked by Devon
  41. chem class

    Nitrosyl bromide decomposes according to the following equation. 2NOBr (g)(equilibrium arrow) 2NO (g) + Br2 (g) A sample of NOBr (0.64 mol) was placed in a 1.00-L flask containing no NO or Br2. At equilibrium the flask contained 0.46 mol of NOBr. How many

    asked by jessie
  42. chemistry

    25.5g C7H11NO7S (4-nitro-2-toluenesulfonoic acid dihydrate) in 1.00*10^2g H2O (nonionizing solute)

    asked by Jose Reyes
  43. physics

    A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 19 N at an angle θ = 45° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to

    asked by maya
  44. Geometry

    Complete the indirect proof. Given: Rectangle JKLM has an area of 36 square centimeters. Side JK is at least 4 centimeters long. Prove: KL

    asked by chica
  45. Physics

    A Ferris wheel with radius 9.8 m rotates at a constant rate, completing one revolution every 36.6 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of

    asked by Briana
  46. college alg HELP!

    I cannot figure a way to do this problem: An investment of $98,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%, and third 9%. The total

    asked by samantha
  47. math (interests & percentss)

    i need help with these problems below ! mike deposited $500 for 9 months at 8%, compounded quarterly. a. how many times was interest added to mike's account? b. what percent interest was added each time? c. what was the balance in mike's account at the end

    asked by bree
  48. Chemistry

    Two samples of water of equal volume are put into two dishes and kept at room temperature for several days. The water in the first dish is completely vaporized after 2.8 days while the water in the second dish takes 8.3 days to completely evaporate.What

    asked by Brian
  49. physics

    Two masses are connected by a string. Mass A is on a flat roof and mass B is hanging over the edge of the roof. The mass on the roof is 15 kg and the hanging mass is 5 kg. The edge of the roof is 100 m above the ground. The two masses are initially at rest

    asked by Anna
  50. physics

    When a 0.30-kg mass is attached to a vertical spring, the spring stretches by 15 cm. How much mass (total) must be attached to the spring to result in a 0.86-s period of oscillation?

    asked by aok
  51. biology

    Why can maintaining homeostasis be particularly challenging for multicellular organisms?

    asked by justin
  52. math-optimal diameterand height

    A cylindrical oil-storage tank is to be constructed for which the following costs apply: cost per square meter metal for ides $30.00 combined costs of concrete base and metal bottom $37.50(cost per square meter) top 7.50 (cost per square meter) The tank is

    asked by Alicia
  53. chemistry

    How much heat is gained in joules by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 12 C

    asked by Darryl
  54. 3rd grade math

    Emma has 36 feet of fence. She wants to make the largest rectangular area possible for her rabbit to play in. What length should she make each side of the rabbit pen? Show your work and explain how you found the largest area.

    asked by Macy
  55. accounting

    a partial balance sheet and income statement for King Corproation follow: KING CORPORATION Partial Balance Sheet December 31,2009 Assets Current assets: Cash $33,493 Marketable securities $215,147 Trade receivables, less allowance of $6,000 $255,000

    asked by Sheryl
  56. Physics

    Find the heat necessary to change 2.5kg of water (ice) at -2 degrees C to steam at 105 degrees C. specific heat ice= 2060 specific heat water= 4180 specific heat steam= 2020 heat of fusion= 3.34X10^5 heat of vaporization= 2.26X10^6

    asked by Brittany
  57. chemistry

    what is the hybridization of BrO2+

    asked by serena
  58. spanish

    1)El hijo de tu madre y tu padrastro? ........... 2)la hija de tu madrastra o tu padrastro?....... can you help me answer these question?

    asked by joy
  59. geometry

    A rectangular rug covers the floor in a living room. One of the walls in the same living room is pained blue. Are the rug and the blue wall parallel?

    asked by Mike
  60. Geometry

    Write an equation of a line in point-slope form for a line parallel to y = 6x + 2 that contains P ( 5,9).

    asked by Jami quebedeaux
  61. Physics

    Given: 90m skid mark .50 coefficient of friction between the tires and skid mark How fast is the car moving when the brakes initially applied?

    asked by JC
  62. chemistry

    H2C=CH2(g) + H2(g) C2H6(g) Adding a small amount of platinum powder greatly increases the rate of the reaction above. How might the platinum be affecting the rate of the reaction? (Select all that apply.) 1) It increases the concentration of the reactants.

    asked by nick
  63. geometry

    Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

    asked by Lexo
  64. Math: Need Answer to study for a quizz. Help ASAP

    Estimate the area under the curve f(x)=x^2-4x+5 on [1,3]. Darw the graph and the midpoint rectangles using 8 partitions. Show how to calculate the estimated area by finding the sum of areas of the rectangles. Find the actual area under the curve on [1,3]

    asked by Jesse
  65. Accounting

    On June 1, Melendez Company borrows $90,000 from First Bank on a 6-month, $90,000, 12% note. Instructions (a) Prepare the entry on June 1. (b) Prepare the adjusting entry on June 30. (c) Prepare the entry at maturity (December 1), assuming monthly

    asked by Sharon Lawson
  66. Physics

    Block B in the figure below weighs 713 N. The coefficient of static friction between block and table is 0.20. Assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

    asked by Will
  67. chemistry

    23) The equilibrium constant for the gas phase reaction 2NH3 (g) N2 (g) + 3H2 (g) is Keq = 230 at 300 °C. At equilibrium, __________. A) reactants predominate B) products predominate C) only products are present D) roughly equal amounts of products and

    asked by jess
  68. physics

    A man of mass 61.6 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 15.9 kg and is 2.0 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the

    asked by Bronson
  69. physics

    A museum curator moves artifacts into place on many different display surfaces. Use the values in Table 4-2 in the textbook to find Fs,max and Fk if you were to move a 157 kg aluminum sculpture across a horizontal steel platform. Fs,max: Fk:

    asked by Zach
  70. physics

    A 33 N force acting at 90° and a 44 N force at 60° are applied concurrently at a point P. What is the magnitude and direction of the resultant force?

    asked by nic
  71. 1st grade

    write down five" th"words/

    asked by solomon
  72. math

    There's a circle with that has a dot in the middle with two line going to the left and right that's is 16 m. I have to find the area of the circle. I have to give that exact area and an approximate area to the nearest square unit. Help?

    asked by Alex
  73. PHYSICS

    A bat flies toward a wall at a speed of 3.5 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 30.5 kHz. What frequency does the bat hear in the reflected wave? kHz

    asked by BRANDY
  74. Chemistry 20 TRUE OR FALSE

    1) A conductivity apparatus is not that useful in separating acids from bases because both solutions conduct electricity. True or false 2)The hydronium ion contains a water molecule bonded to a hydrogen ion. True or False

    asked by Anonymous
  75. Statistics

    A bowl contains 3 red balls, 2 blue balls and 5 white balls. A ball is selected and the color noted. Then it is replaced. A second ball is selected and its color noted. Find the probability of getting a red ball and a blue ball.

    asked by Maryan
  76. Calculus

    a farmer has 160 ft of fence and wants a pen to adjoin to the whole side of the 130 ft barn. what should the dimensions be for maximum area?

    asked by Jessica
  77. Physics

    In Fig. 6-25, blocks A and B have weights of 49 N and 21 N, respectively. (a) Determine the minimum weight of block C to keep A from sliding, if µs between A and the table is 0.20. (b) Block C suddenly is lifted off A. What is the acceleration of block A,

    asked by Robert
  78. chemistry

    Consider the following reaction at equilibrium: 2NH3 (g) N2 (g) + 3H2 (g) ΔH° = +92.4 kJ Le Cha ^ telier's principle predicts that increasing the temperature will shift the reaction to the. a) stays same b)leftc)none d)right

    asked by richy
  79. Chemistry

    What volume of O2 at 912mmHg and 33 degrees C is required to synthesize 11.0 mol of NO?

    asked by Kelsey
  80. elizabeth high school

    . An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within one year of the population mean. Assume the population of ages is normally distributed. Determine the minimum required sample size to

    asked by minhaj
  81. physics

    A child exerts a tangential 41.9-N force on the rim of a disk-shaped merry-go-round with a radius of 2.25 m. If the merry-go-round starts at rest and acquires an angular speed of 0.086 rev/s in 3.57 s, what is its mass?

    asked by aok
  82. physics

    Two blocks of equal mass m are tied to each other through a light string . One of the blocks is pulled along the line joining them with a constant force F . Find the tension in the string joining the blocks.

    asked by Pronab
  83. statistics

    A random samples of 250 bolts manufactured by machine A and 200 bolts manufactured by machine B showed 24 and 10 defective bolts respectively. Test the hypothesis that the machines are showing difference qualities of performance. Use 5 per cent level of

    asked by Varun
  84. physics

    How much work must you do to push a 13 kg block of steel across a steel table (\mu_{{\rm k}}=0.6) at a steady speed of 1.3 m/s for 2.6 s?

    asked by gavin
  85. Chemistry

    What are the sizes of BCl3, CCl4, NCl3, and Cl2O in comparison to one another. For example BCl3

    asked by Andrea
  86. Chemistry

    Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC*Delta T to calculate the temperature change of the 314 g of water. under the following

    asked by Ricardo
  87. HCR 220

    How do effective medical compliance plans limit the risk of professional liability?

    asked by Anonymous
  88. algebra

    34x(nx2)=680

    asked by Tatyanna
  89. Psychology/Essay question

    Dissent and altruism are a matter of personal conviction, but situation factors are involved also. Analyze five situational factors that are involved when a person decides to "rock the boat" and choose conscience over conformity. I do not understand what

    asked by Rena
  90. physics

    A particle executes simple harmonic motion with an amplitude of 10 cm and time period 6 s. At t=0 it is at position x=5 cm going towards positive x direction . Write the equation for the displacement x at time t. Find the magnitude of the acceleration of

    asked by Pronab
  91. Chemistry

    A sample of gas has a mass of 0.555 g. Its volume is 119 mL at a temperature of 90 degrees C and a pressure of 744 mmHg. What is the molar mass of the gas?

    asked by Kelsey
  92. Chemistry

    Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 30. cm3. If the combustion of this mixture releases 980. J of energy, to what volume will the gases expand against a constant pressure of 640. torr if all the

    asked by Mattie
  93. physics

    A 2kg. lump of clay traveling at a speed of 20m/s collides with and sticks to a 5kg. lump of clay initially at rest and hanging from a string. Find the final speed of the new lump of clay. How high will the clay swing after the collision? (initial) m1=2kg.

    asked by please just check my work
  94. physics

    crate weighs 823 N rests on plank that makes a 25 degree angle with the ground. Find components of crate's weight parallel and perpendicular to the plank

    asked by Zoe
  95. Physics (very long question)

    Two astronauts (Fig. P8.68), each having a mass of 84.0 kg, are connected by a 10.0 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway betwen them at a speed of 5.80 m/s. Treating the astronauts as particles,

    asked by Anonymous
  96. Chemistry

    The following reaction has an equilibrium constant of 0.020 at a given temperature. 2HI(g) I2(g) + H2(g) If you have 1.00 mol HI(g) in a 0.750-L container initially, how many moles of HI(g) will be present when the system reaches equilibrium?

    asked by Adrianne
  97. accounting -annual amount

    The exhaust-gas temperature leaving a continuously operating furnace is 260°C, and a proposal is being considered to install a heat exchanger in the exhaust-gas stream to generate low-pressure steam at 105°C. the question to be investigate is whether it

    asked by Alicia
  98. DIFF. CALCULUS

    A particle is moving along the parabola 4y = (x + 2)^2 in such a way that its x-coordinate is increasing at a constant rate of 2 units per second. How fast is the particle's distance to the point (-2, 0) changing at the moment that the particle is at the

    asked by KAREEN
  99. Physics

    The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.59 m and 0.98 m, respectively. The respective rotational speeds are 456 rev/min and 4143 rev/min. Calculate the speeds of the tips of both rotors. main rotor: tail rotor:

    asked by Anonymous
  100. algebra

    walnuts that sell for $3 a pound and macadamia nuts that sell for $4 per pound are mixed to create 50 pounds of mixture that sells for $4 per pound. HOw many pounds of each type of nut are needed?

    asked by ryan
  101. physics

    1.7 mol of an ideal gas which starts at 1.6 atm and 50 o C does 2.0 kJ of work during an adiabatic expansion. What is the final volume of the gas?

    asked by serena
  102. physics

    two air carts of mass m1=0.87kg and m2=0.48kg are placed on a frictionless track.cart 1 is at rest initally, and a spring bumper with a force constant of 690N/m. cart 2 has a flat metal surface for a bumper, and move toward the bumper of the stationary

    asked by jheel
  103. Physics

    A concave mirror has a radius of curvature of 3.4 cm. (a) Determine the object position for which the resulting image is upright and seven times the size of the object. cm? (b) Draw a ray diagram to determine the position of the image. (Use a negative

    asked by Max
  104. Math

    Find the present value of the annuity necessary to fund the withdrawal of $600 per month for 10 years, if the annuity earns 2% per year and if there is to be $10,000 to be left in the annuity at the end of the 10 years. (Assume end-of-period withdrawal and

    asked by Madison
  105. 6th grade

    a fast growing mushroom doubled in size every day. after 30 days it measured 6in. tall on which day did it measure 1 -1/2 in tall

    asked by rebecca
  106. physics

    An automobile manufacturer claims that its product will travel 1.2 km in 27 s, starting from rest. What is the magnitude of the constant ac- celeration required to do this? Answer in units of m/s2.

    asked by Anonymous
  107. chemistry

    The following reaction consumes 2.40 kg of CO, How many total liters of gas are formed at STP?

    asked by Tina
  108. Math

    The earth's mass is 5.9763 X 10^27 (27th Power) . How much is it's mass in MG?

    asked by 12345678987654321
  109. reading

    how long did it take to cross the atlantic ocean for the book "James and the Giant Peach"?

    asked by Cindy
  110. Algebra

    Algebra Help? Union & Intersection of Sets, Complement and Cross Product, Relations &Functions,Venn Diagram? I did a survey on which type of pie they like I already drew the vinn diagram but cant Jiskha does not accept that format. this is what I got Step

    asked by TiffanyM
  111. Geometry

    Indirect Proofs Prove a triangle cannot have 2 right angles. 1) Given triangle ABC. 2) Assume angle A and angle B are both right angles is true by one of two possibilities (it is either true or false, so we assume it is true) This is my first time to do

    asked by chica
  112. Physics

    A 20 kg bag of luggage is rolled across a horizontal floor by a force of 50 N applied to the handle which makes an angle of 65 degrees with the horizontal. If the bag moves at constant speed, what is the coefficient of friction between the bag and the

    asked by Jamie
  113. Math

    Find the present value of the annuity necessary to fund the withdrawal of $600 per month for 10 years, if the annuity earns 2% per year and if there is to be $10,000 to be left in the annuity at the end of the 10 years. (Assume end-of-period withdrawal and

    asked by Madison
  114. research and evaluation

    Give examples of both discrete and continuous data? What makes them different? Is the measurement of money continuous or discrete? Explain. Can discrete data be analyzed using the normal distribution? Why or why not?

    asked by sue
  115. Chem

    A chemical reaction in a bomb calormeter evolves 4.66Kj of heat. If the heat capcity of the calorimeter is 1.38 Kj/C what is the temperature change?

    asked by Katie
  116. Spanish

    1. La cena es ______. a. una bebida b. una hora c. una verdura d. una comida D 2. Nunca como allí porque la comida es ______. a. buena b. horrible c. sabrosa d. malo D 3. Estoy muy enferma. No _______ ir a la escuela. a. voy b. tengo c. debo d. soy D? 4.

    asked by mysterychicken
  117. successful writing at work

    2. a. student ID number- not on resume b. social security number – not on resume c. the Zip code of your references’ addresses d. a list of all your English courses in college e. section numbers of the courses in your major f. statement that your are

    asked by gawoman
  118. Physics

    How much heat must be added to 3kg of liquid water at 25 degrees C to change it into steam at 120 degrees C?

    asked by Brittany
  119. chemistry

    A metal sample weighing 45.0 g and at a temperature of 99.1 degrees Celsius was placed in 38.6 g of water in a calorimeter at 25.0 degrees Celsius. The calorimeter reached a maximum temperature of 32.8 degrees Celsius. what was the delta t of water? what

    asked by Anonymous
  120. Physics

    You weigh 585N on Earth, what is your mass? What do you weigh on the moon id g is 1.60m/s2

    asked by Dave
  121. 6th grade

    each time a ball bounces it returns to a height 2/3 the hight of the previous bounce. after the third bounce, the ball returns to a hight of 4ft. from what height was it dropped

    asked by rebecca
  122. physics

    a small child is sliding down a 25 degree slide at a uniform velocity of 1.0 m/s. If the child weighs 210 N, find the coefficient of friction between the slide and the child.

    asked by Rob
  123. College Physics

    A 300 kg satellite is orbiting the earth with 20,352 km/h speed. Calculate the orbital radius in km. Assume G=7*(10^-11) N.m2/kg2 and Mass of earth = 6*(10^24) kg

    asked by Jim Raynor
  124. Statistics

    An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within one year of the population mean. Assume the population of ages is normally distributed. Determine the minimum required sample size to

    asked by badel
  125. physics

    In 9.2 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.

    asked by michelle
  126. Algebra

    Write the equation of the prpendicular bisector of the line segment AB with endpoints A(1,1) and B(7,5). Write the answer in slope-intercept form.

    asked by Marissa
  127. Calculus

    If a tangent line is drawn to the parabola y = 3 - x^2 at any point on the curve in the first quadrant, a triangle is formed with the axes. At what point on the curve should the tangent be drawn to form a triangle of least area?

    asked by German
  128. chemistry

    Iodine-131 has a half-life of 8 days. How many grams of a 12 g sample will remain at the end of 40 days? how do i solve this? i thought it was 12^40=1.5 but that's wrong...

    asked by jess
  129. math

    Between a bar graph and a line graph which one is more appropriate for displaying the number of individuals of dffering ages at a picnic. We are provided the ages brackets and frequency. I say it is a bar graph since line graphs are better for over time

    asked by m
  130. physics

    a banana with a temperature of 17 degrees C (specific heat of banana= 3520j/kgK) and a a mass of 250g is placed in a bowl of milk with a temperature of 8 degrees C and a mass of 350g (specific heat of milk= 4200 J/kgK). no heat is lost to the bowl or the

    asked by Brittany
  131. physics

    Two blocks, one 5.0 Kg and the other 2.0 Kg are suspended from a pulley such that the 5.0 Kg block is 4.0 m above the 2.0 Kg block and 5.0 m above the floor. The blocks are released from rest. a. At the moment that the two blocks pass each other, what are

    asked by Anonymous
  132. physics

    Two blocks of equal mass m are tied to each other through a light string . One of the blocks is pulled along the line joining them with a constant force F . Find the tension in the string joining the blocks.

    asked by Pronab
  133. algebra 1

    please help me solve this problem. The formula R=0.075 + 3.85 can be used to predict the world record in the 1500 meter run, t years after 1930. Determine an inequality that identifies the years in which the world record will be less than 3.7. Solve for t.

    asked by thawk
  134. Science

    What life is like within the ecosystem that the cyanobacterium lives as well as the volcanic island as a whole. Words required to be included in the story are hot spot, tectonic plates, lichen, fungus, algae, symbiosis, photosynthesis, carbon dioxide,

    asked by Hailey
  135. Chemistry

    I don't understand how to work out this problem, non the less where to begin with any calculations. Help!! Three of the strongest lines in the He+ ion spectrum are observed at the following wavelength: (1) 121.57 nm (2) 164.12 nm (3) 468.90 nm Find the

    asked by Very Confused :(
  136. accounting

    The following financial data were taken from the annual financial statements of Smith corporation: 2007 2008 2009 Current assets $450,000 $400,000 $500,000 Current liabilities $390,000 $300,000 $340,000 Sales $1,450,000 $1,500,000 $1,400,000 Cost of goods

    asked by Sheryl
  137. CHEM

    How much heat is released in the formation of 10 liters of NH3(g) at 25 C and 1 atm, given : 2N2+3H2 ----> 2 NH3 HEAT OF FUSION IS - 92.6 KJ show steps please

    asked by MAX
  138. college alg help!

    cannot figure a way to do this problem: An investment of $98,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%, and third 9%. The total

    asked by alexandra
  139. Physics

    A 20 kg bag of luggage is rolled across a horizontal floor by a force of 50 N applied to the handle which makes an angle of 65 degrees with the horizontal. If the bag moves at constant speed, what is the coefficient of friction between the bag and the

    asked by Jamie
  140. 4th grade

    IT HAS ONLY 2 DIFFERENT DIGITS,BUT THEY REPEAT.THE DIGITS APPEAR IN THE SAME ORDER IN BOTH PERIODS.THE SUM OF THE DIGIT IS 20.THE ONES DIGIT IS 5 MORE THAN THE TENS DIGIT.

    asked by HANNIA
  141. Physics

    A 70 kg man just before contact with the ground has a speed of 5 m/s In a stiff-legged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the

    asked by Jessica
  142. physics

    2. A hockey player is skating in a straight line at 1.5 m/s. He then increases his speed to 7 m/s in 3 s. What is his average acceleration during this 3 s?

    asked by m
  143. Chemistry

    Which of the following statements is a false statement concerning characteristics of chemical equilibrium? a. Equilibrium is dynamic. b. For a specific reaction at a specific temperature, the equilibrium state will be dependent of the direction of approach

    asked by Carla
  144. algebra

    Describe two laws of exponents and provide an example illustrating each law. Explain how to simplify your expression. How do the laws work with rational exponents?

    asked by kelley
  145. physics

    trunk with mass of 200 kig on ramp with 45 degree angle with the horizontal. Ramp covered with ice and frictionless. Find acceleration of trunk as slides down.

    asked by anonymous
  146. Algebra 2

    Which one is a rule for the nth term of an arithmetic sequence with a8 = 56 and d = 5?

    asked by Diana
  147. Chemistry 101-URGENT

    How much heat is required to melt 43.5 g of ice at 0°C?

    asked by Cherly Young
  148. calculus

    If a tangent line is drawn to the parabola y = 3 - x^2 at any point on the curve in the first quadrant, a triangle is formed with the axes. At what point on the curve should the tangent be drawn to form a triangle of least are?

    asked by German
  149. biology

    how does reverse osmosis work to purify bottled water?

    asked by Anonymous
  150. finance

    A company wants to invest in a new advertising program. Using the NPV method of capital budgeting, determine the proposal’s appropriateness and economic viability with the following information: • The new program will increase current sales, $10

    asked by liza
  151. finance

    A company wants to build a new factory for increased capacity. Using the net present value (NPV) method of capital budgeting, determine the proposal’s appropriateness and economic viability with the following information: • Building a new factory will

    asked by liza
  152. chemistry

    The rate law of the overall reaction. A + B -> C is rate = k[ A ]^2 Which of the following not increase the rate of a chemical reaction? a) increasing the temperature of the reaction b)increasing the concentration of reaction A c)adding a catalyst for the

    asked by ben
  153. 10th grade

    If a circle has a diameter of 7inches, what is the circumference rounded to the nearest whole number? Use pi=3.14

    asked by fay
  154. Math

    The side length,s, of a cube is related to its volume, v, by the formula s=v^1/3. A cube box when filled with materials has a volume of 729 cm2. What is the side lenth of the cube box used? Please help me step by step with this. I don't know where to start

    asked by Andre
  155. Calculus

    1)Find the particular solution of the differential equation xy'+3y=80xlnx (x>0) satisfying the initial condition y(1)=4 2)Find the particular solution of the differential equation y'−1y=−5x+3 satisfying the initial condition y(0)=3.

    asked by Hannah
  156. psy210

    In the 1970s, approximately __________ of American couples reported that they cohabitated before getting married; in the year 2,000, approximately __________ reported that they had cohabitated before getting married.

    asked by Anonymous
  157. physics

    A container of volume 14.2 cm3 is initially filled with air. The container is then evacuated at 0oC to a pressure of 32 mPa. How many molecules are in the container after evacuation if we assume that air is an ideal gas?

    asked by serena
  158. Chemistry

    convert @5g of NaCl into moles

    asked by cody
  159. Physics

    Use the Second law of thermodynamics to explain why an ice cube cools off your warm soda.

    asked by Anonymous
  160. algebra

    5a+7a²+3a

    asked by Anonymous
  161. English

    I really hope you can check these sentences for me. I tried to rephrase the beginning of chapter five of Shelley's Frankenstein. 1) The scene takes place during a dreary night. It is one in the morning and the rain taps dismally (I need a synonym) against

    asked by Franco
  162. Calculus

    Find the particular solution of the differential equation y'=(5x+21y)/7x satisfying the initial condition y(1)=5.

    asked by Hannah
  163. Algebra

    Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test. Would the average cost ever fall below $3.00? If so, identify a

    asked by Anonymous
  164. Algebra

    Please let me know if I figured this out correctly ... 2t + 4 >/= t -t -t 1t + 4 >/= 0 - 4 -4 1t >/= -4 /1 /1 t >/= -4

    asked by Kate
  165. physics

    In one cycle, a heat engine absorbs 4400 J at 500C and exhausts 400 J. How much work does it do per cycle?

    asked by Nadya
  166. Calculus

    Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I have tried this problem so many ways and cannot come up with the correct answer :(

    asked by Lauren
  167. physics

    An object is placed on an inclined plane which forms an angle B = 18º with the horizontal. An external force F of magnitude 14.3 N is applied to the object. The force F acts in a direction which forms an angle A = 62º with the horizontal. As a result of

    asked by sean
  168. Poverty

    Why is important to fight against poverty? these people in poverty are characterized by others as being worthless, are rejected, and are made to feel guilty because of their situation. It's important to help these people because their lives have been torn

    asked by Sarah
  169. Chemistry

    What is the concentration of ammonia in a solution that is .500 M NH4Cl and in which the solubility of Mg(OH)2 is 1.0x10^-3 M? Ksp for Mg(OH)2 is 6.3x10^-10. Write the equilibrium equation and calculate the overall K.

    asked by Anonymous
  170. Math

    Hello, I have two more rational exponent question that I wanted to verify please: 4x^3y^-2 _________ 2x^-1y^4 = 2x^4y^6 is this correct? 2nd question: [w^1 / w^-3] my answer: = [w^(1)(-4)/ w ^ (-3)(-4)] = w^-4 / w^12 = w^12 / w^4 = w^3 / w Is this right?

    asked by Dania
  171. Physics

    A spherical mooring buoy 36cm in diameter with a mass of 43 kg is fastened to a cleat on the top ofthe sea wall by a 50 cm long line, as shown. The force against the sea wall is a. 73N b.87N c. 104N d.116N e. None of these

    asked by Gerard
  172. Calculus

    show that y= x + e^x is a solution of dy/dx = y - x +1

    asked by German
  173. physics

    "Calculate the internal energy for the air in human lungs after a regular inhalation. You find this volume discussed in the context of the spirometer (textbook p. 203). Hint: treat air as an ideal gas with the molecular mass M = 29.00 g/mol " Not sure the

    asked by serena
  174. science

    explain why a single5 500 kg block of granite weathers much more slowly than 100 chunks of granite weighing 5 kg each.

    asked by Dani
  175. algebra

    Use the intercept to graph the equation x+2y=4

    asked by Vernell
  176. Statistics

    Given the following set of numbers: x=7.1, 1.8, 2.1, 1.5, 2.1. Find the median, mean and standard deviation. State the formulas (or procedure) for these values, plug the numbers into the formula and evaluate the results. Compare the mean and median. Which

    asked by Maryan
  177. chemistry

    what state is sulfur dioxide in at 200 k Pa and -100 Celsius

    asked by george
  178. Chemistry

    How much heat is required to melt 43.5g of ice at its melting point?

    asked by Yvone Miles
  179. Chemistry

    How much heat is required to melt 43.5g of ice at its melting point?

    asked by Yvone Miles
  180. physics

    what is the SI unit for torque? :)

    asked by jake
  181. buisness

    Throughout the corporate world, businesses are transforming labor into a more flexible (and variable) cost. Among such companies are Hewlett-Packard, General Electric, DuPont, Sun Microsystems, and British Airways. Discuss whether direct labor is a fixed

    asked by Keith
  182. chemistry

    Which of the following is an example of a change of state? Answer Snow blows to form snow drifts. Sodium metal and chlorine gas form salt crystals. Dry ice disappears. Grilling a steak turns it brown.

    asked by barbra
  183. Math

    Solve: x'=x+y+2t y'=x+y-2t

    asked by Dan
  184. statistic

    . The average time a student spends studying just prior to a test is 36 minutes with a standard deviation of 7 minutes. This distribution approximates a normal curve. Find the percent of students who study just prior to the test for. a) more than 60

    asked by badel
  185. chemistry

    If helium added to the mixture increases the pressure to 1.90 {\rm atm}, what is the partial pressure ({\rm atm}) of the helium?

    asked by Anonymous
  186. Chemistry

    How much heat is given off by melting 155 grams of water?

    asked by Sarah
  187. com/155

    Write five sentences in which you address changes in your writing.

    asked by Denise
  188. Ms.Sue

    Yesterday I wasn't able to post so I here I am posting it today for you to check. What are the temporary and longterm effects of STI's? -Chlamydia -gonorrhoea -trichomonas -LGV -Pubic Lice and Scabies -syphilis -HPV -Herpes -Hepatitis B -HIV The temporary

    asked by Anonymous
  189. Geometry

    a 31 meter pole breaks and the tip touches the ground 10 meters from the base of the pole. How tall is the part of the pole that is still standing?

    asked by Michael
  190. math

    how do i solve this 1/6 +4(2/5-7/10)=

    asked by natalie
  191. satistics

    The average time a student spends studying just prior to a test is 36 minutes with a standard deviation of 5 minutes. This distribution approximates a normal curve. Find the percent of students who study just prior to the test for. a) more than 40 minutes

    asked by badel
  192. Math

    X is less than or equal to 4. OR X is greater than or less than 10. Is it a segment, line, or one or more rays?

    asked by Sean
  193. Three Cups of Tea

    Has any tutors here read the book Three Cups of tea? By: Greg Mortenson? I need to ask some questions about it.

    asked by Allyson
  194. GEOGRAPHY (URGENT!!!)

    I NEED HELP!!! this is urgent!!! Human-Environmental Interactions: how did the people in Khartoum modify the environment? how is the people in khartoum being influence by the physical landscape/environment? sorry my grammar sucks i have other questions but

    asked by NEED HELP URGENT!!!
  195. Chem

    I've been having trouble setting up word problems. Here is one problem I need help with. How many Bromide ions are in a sample of CaBr2 that has a mass of 10.0g?

    asked by Nescha
  196. physics

    If 842 J of heat is needed to increase the temperature of ethane gas (C2H6) in a 15 litre container from 237 K to 400 K, how much gas is in the container

    asked by serena
  197. Physics

    lead melts at 328 degrees C. lead has a heat of fusion of 2.04X10^4 J/kg and a specific heat of 130 J/kgK. how much heat must be removed from 0.50 kg of molten lead (liquid) at 328 degrees C to make it all a solid chunk at 300 degrees C?

    asked by Brittany
  198. chemistry

    How much heat would be produced by reacting 1.82 grams of HCl with 2.00 grams of NaOH?

    asked by Sarah
  199. Physics

    I have a spring on a horizontal frictionless surface. Initially it is un-stretched and at x = 0 cm. I then pull it back 10 cm and release it. What is the amplitude of the oscillations (the object has mass m)?

    asked by lisa
  200. Spanish

    8. ____ ayudan mucho en casa. a. Tú y yo b. Ana y yo c. Ana Maria y él d. Tú Can't decide between A and B 9. "¿Qué bebes en la cena?" "________ leche." a. Bebo b. Bebes c. Beben d. Bebemos C? 10. No me gustan las uvas pero me ______ las manzanas. a.

    asked by mysterychicken
  201. algebra

    8(4k-4)=-5k-32

    asked by Blahh
  202. Physics (Classical Mechanics)

    Hey.. I don't know exactly how to get the solution for this one... doubleudoubleudouble dot physikerboard.de/files/fahrzeug_223.jpg (its a sketch i made with paint^^) We assume there are no frictions at all and we only look at the masses M, m1 and m2. I

    asked by Toby
  203. Cheistry

    How much heat is required to melt 43.5g of ice at its melting point?

    asked by Yvone Miles
  204. Math

    There are four tests in a year. The first test is worth 26%, the second is worth 20%, the third test is worth 30%, and the fourth test is 20%. Maria received a 59% on her first test. To receive a final mark of 65%, what is the minimum she needs to obtain

    asked by Diana
  205. gym

    ADOETEMED with five blanks. It is a phase. Help!

    asked by Stacey
  206. college chemistry

    Which of the following compounds would theoretically have the highest melting point? Answer H2O FeO CO2 C6H12O6

    asked by barbra
  207. physics

    A 3.1 kg block has an initial velocity of 15 m/s as it moves 12m on a rough horizontal surface with coefficient of kinetic friction of .23.. ~ then slides up a frictionless incline whose angle is 24 degrees. A (8 pts) Sketch energy pie charts at points a,

    asked by Anton
  208. U.S history

    What influences might cause a member of congress to vote agnist the wishes of the people from his/her district or county?

    asked by Droid
  209. social studies

    I need to unscramble lulab used by sumerians

    asked by Sandi
  210. RE: Physics: Thermodynamics

    well the second law states that natural processes go in a direction that maintains or increases the total entropy of the universe. entropy is the measure of disorder in a system, so I really do not know the best way to answer this problem

    asked by Anonymous
  211. algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. Write an equation using only one variable

    asked by Anonymous
  212. Question

    Why is it important to fight against inequality and promote human rights?

    asked by Joe
  213. 9th grade

    the circumference of circle j is 24 pie. what is the perimeter of jkl

    asked by Nathan
  214. ALgebra

    multiply 1) (x-3)^3. 2) (2x+y)^3. 3) (3a-2)^3

    asked by mike
  215. math

    do you know a where I can find a web link that would tell you how to read a ruler? thanks.

    asked by jill
  216. Chemistry

    Explain, in terms of subatomic particles, the difference between S-32 and S-34

    asked by lisa
  217. basic critical thinking

    select a topic of interest to you and explain how you would come up with a reliable sample for obtaining peoples' opinions.

    asked by Sheryl
  218. Finance

    A company wants to build a new factory for increased capacity. Using the net present value (NPV) method of capital budgeting, determine the proposal’s appropriateness and economic viability with the following information: • Building a new factory will

    asked by Anonymous
  219. Math

    Estimate the are under the curve f(x)=x^2-4x+5 on [1,3]. Darw the graph and the midpoint rectangles using 8 partitions. Show how to calculate the estimated area by finding the sum of areas of the rectangles. Find the actual area under the curve on [1,3]

    asked by Jesse
  220. finance

    A company wants to buy a labor-saving piece of equipment. Using the NPV method of capital budgeting, determine the proposal’s appropriateness and economic viability with the following information: • Labor content is 12% of sales, which are annually $10

    asked by liza
  221. statistics

    When a card is selected from a deck, find the probability of getting a diamond, a face card or a diamond, or a club and a king?

    asked by chris
  222. math

    Describe the misuse or misinterpretation of statistics that may be involved. An ad for arcbrite claims that the detergent gets clothes twice as clean. I think it is wrong because there is no proof that the clothes get twice as clean. Also no clothes can be

    asked by m
  223. math

    Is the exact area of a circle with an 16 m radius 32 m squared? And what would be the approximate area be?

    asked by Alex
  224. calculus

    g(x)=(x^3)-(3x^2)+17 a)find and classify all critical points of g(x) using exact with x and y values. b)for what values of x is the function concave down; again exact x and y values.

    asked by matt dunlap
  225. accounting -annual amount

    The exhaust-gas temperature leaving a continuously operating furnace is 260°C, and a proposal is being considered to install a heat exchanger in the exhaust-gas stream to generate low-pressure steam at 105°C. the question to be investigate is whether it

    asked by Alicia
  226. 4th grade

    sally x amount of money. bob has three times as much as sally, less than 14.62. write an expression using x to see how much bob has.

    asked by sean
  227. Direct Labor: Variable or Fixed Cost?

    Throughout the corporate world, businesses are transforming labor into a more flexible (and variable) cost. Among such companies are Hewlett-Packard, General Electric, DuPont, Sun Microsystems, and British Airways. Discuss whether direct labor is a fixed

    asked by George
  228. Science

    What is a simple experiment to determine if a solid white substance is a protein or a carbohydrate

    asked by I can't tell u
  229. 0303 math

    Solve the system by the substitution method y=-2x-4 5x-2y=-1

    asked by Tammy
  230. Science

    Give an example of what you have determined is a bougus analysis using-quasi-scientific jargon, but has little or no objectivity.

    asked by JOE
  231. math

    Circla all numbers in which the ones digit is twice the hundreds digit. 842 824 482 284 248 933 977 337 379

    asked by Rick
  232. Tx. History

    What was the American experience?

    asked by Chels
  233. being kind

    why is being kind important. justify your response. is being kind important because it allows others to feel good about you and you to feel good about yourself?

    asked by Ritico
  234. PHYSICS

    a) At T = 12°C, how long must an open organ pipe be to have a fundamental frequency of 300 Hz? i got answer for part a that is .5642m but did not get for part b. (b) If this pipe is instead filled with helium at 20°C, what is its fundamental frequency?

    asked by BRANDY
  235. algebra

    b=a+4

    asked by biftu
  236. Spanish

    Can you make a negative command and another command (negative or affirmative) with a double object pronoun. They are in a writing about why tattos are in fashion and what they want to express.

    asked by Jackie
  237. physics

    Find the work for an isothermal expansion of 3.08 mol of an ideal gas at temperature of 18oC from pi = 4.55 atm to pf = 3.32 atm.

    asked by serena
  238. physics

    Suppose I have a spring. I add a mass (m = 1.0 kg) and it is displaced by 15 cm. What is the spring constant k in units of (N/m)?

    asked by tiffany
  239. Logic

    What would happen if Pinochio (I don't think i spelt that right) said "My nose will grow"? Please help me figure this out!

    asked by Kelsie
  240. U.S history

    My two colonies are New Jersey and Pennsylvania.How are they similar and how are they different?Which one would you live in,and why?

    asked by melissa
  241. business math

    A fair die is rolled 16 times. What is the expected sum of the 16 rolls?

    asked by cmb
  242. Chemistry

    What is 17.4 psi converted to atm?

    asked by Kelsey
  243. Chemistry

    What is 832 torr converted to atm?

    asked by Kelsey
  244. English

    A: What do you think of planting trees? 1. I think it is good for health. 2. I think we can live in better places because of the trees. 3. I think we need to plant more trees to live a healthy life. 4. I think we should try our best to preserve the earth

    asked by rfvv
  245. chemisrry

    how many atoms of H are ther in 4.3g CH4

    asked by dee dee
  246. Science

    Is there anyway I can create something similar to acid rain for my experiments? Thanks ( I was thinking of mixing water with vinegar and leaving it there for few day)

    asked by Science
  247. Math

    Considering the doubling plus one function: The output is 2 times the input, plus one. For example, if the input is 3 the out put is 7. Determine which of the following points are on the graph of the doubling plust one !@#$%^&tion: (2,5), (2,8), (-1,1),

    asked by michelle
  248. English

    1. Now that I use e-mail, I write to my cousins much more often. tell if compound or complex compound

    asked by Hayley
  249. buisness

    Industry downsizing has been a major part of the corporate world, even government agencies are downsizing. GovernmentExecutive website "covers the business of the federal government and its huge departments and agencies - dozens of which dwarf the largest

    asked by Keith
  250. geography Ms. Sue

    I looked at the economic articles that you gave me from that website and I don't understand any of them. Do you know of any other sites where i could possibly find an economic article for latin america that is no older than 2 years old. I'm in 6th grade

    asked by Mia
  251. arithmetic

    there weree 93 students that split into equal groups of fewer than ten and there two left over how many groups were there

    asked by cambry
  252. English

    1.Whenever the tide goes out, an island reappears in the canal. tell if compound or complex complex

    asked by Hayley
  253. History & Geography

    What are the boundaries of Europe?

    asked by Betty
  254. AP Chemistry

    What is meant by minimum and maximum energy problems. Are there different equations to find them. What does this conceptually mean? * This is dealing with quantum chemistry such as plancks equation, and debroglie equation.

    asked by qwerty123
  255. physics

    An ideal gas (volume 1.1m3 , pressure 101500 Pa, temperature 290 K) undergoes an isothermal process during which it absorbs 2000 J of heat. How much did the entropy of the system increase?

    asked by Nadya
  256. math

    If you have 6* 1/10 write this in decimal form? 6* .10 is this correct

    asked by Heather
  257. Math

    Tee received six $25 gift cards for his birthday. If he spends 1/4 of his money from the gift cards on Saturday, how much did he save to spend later?

    asked by Joe
  258. math

    how can you write each improper fraction as a mixed number in simplest form.

    asked by brandy
  259. English

    I'd like to know if the following statements are possible.Thank you. 1) I wait fifteen minutes for my mum to arrive and drive me home. 2) I return home by bus. 3) He worked three hours overtime last Saturday. He was on overtime last Saturday. 4)He is on

    asked by Franco
  260. research and evaluation class

    describe joint probability for independent events and give an example of how you would calculate it. How is this different than conditional probability? The following payoff table gives the return on three alternative business decisions based on three

    asked by sue
  261. math

    Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern

    asked by stephanie
  262. Spanish

    2. Nunca como allí porque la comida es ______. a. buena b. horrible c. sabrosa d. malo D? 7. Me gustan los sandwiches de jamón y queso. Son muy _________. a. buenas b. malos c. sabrosos d. horribles C 8. ____ ayudan mucho en casa. a. Tú y yo b. Ana y yo

    asked by mysterychicken
  263. LIT/210

    What are some additional methods that I could use during my lit course to write about the literature I will be reading? I need four, but I only could think of two. These are the two I have so far. 1)I have thought about using a reading journal to write

    asked by Diana
  264. math

    I get confused on this. What type of chart would I use that would show the relationship between age and deaths/1000 people from car accidents. We are provided age groupings of 1-14, 15-24, 25-44, 45-64, and 65+ with this we also have the death rates for

    asked by m
  265. eth 125

    Student writes about two Hispanic American groups from Ch. 9 of the text

    asked by Anonymous
  266. Math

    What would be an expression that can be used to show how many lengths of 5/8 inch lengths of string can be cut from a 15 inch length of string

    asked by Joe
  267. Downsizing and Fixed Costs

    Industry downsizing has been a major part of the corporate world, even government agencies are downsizing. GovernmentExecutive website "covers the business of the federal government and its huge departments and agencies - dozens of which dwarf the largest

    asked by George
  268. Ms. Sue please

    Ms. Sue I had asked this of you already and you said a histogram would be best but I get confused on this and when I enter it into excel it comes out wrong. The data we have is for age 1-14 death rate per 1000 is 4.6, 15-24 rate is 6.2, 25-44 rate is 16.6,

    asked by m
  269. C programming

    Help would be grately apreciated on this problem thank you! Backgound The employees can be any one of the two types: 1) Full-Time Salaried (FTS) and 2) Part-Time Hourly (PTH). Currently, there are totally 1050 FTS employees and 274 PTH employees in a

    asked by Bob
  270. college

    I will like to know are these correct sentences. Their are three kids in the room. We have been married for 20 years, and are relationship is as strong as ever. I’m having trouble with my car. Can you give me some advise? The diplomats are doing what

    asked by samantha
  271. THE TWENTIETH CENTURY PART2

    Notes that begin a phrase before a downbeat are known as pick-up notes or a/an A. anacrusis. B. duck walk. C. shuffle groove. D. call and response.

    asked by AKE KE
  272. Calculus

    The volume of a cone of a radius r and height h is given by V=(3.14/3)(r^2)(h). If the radius and the height both increase at a constant rate of .5 cm per second, at what rate, in cubic cm per second, is the volume increasing when the height is 9cm and the

    asked by Emily
  273. pre calculus

    simplify sin(2 pi/3+x)

    asked by Eli
  274. geography

    Do you know where I can find an article no older than 2 years about economics in latin america? thank you

    asked by Mia
  275. L.A.

    what is the definitons of the word analyical and can anyone help me use it the word in a sentence.I try to lok on the wed but i could not find the word.

    asked by yuku
  276. mathzzz

    3(-9) whats the answer would it be 28-

    asked by lily
  277. Algebra

    0 = 2x^3 + x - 3 solve for x

    asked by Greg
  278. us history

    Think about two colonies.How are they similar?How are they different?Decide which colony you would like to live in.

    asked by melissa
  279. math

    Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern

    asked by Evelyn
  280. Writing

    What type of tone would be appropriate for an informal report?

    asked by Paul
  281. geometry

    a rectangle with a length of 32 units and a width of 18 units; find the length of a diagonal.

    asked by cameron
  282. Anthropology

    What are centralized political systems and how do they operate?

    asked by Rebecca
  283. English

    I really need to know if my sentences are correct. Thank you very much. 1)Now the reality with which he is confronted fills him with horror and disgust. 2) He is disgusted and horrified by his creation- He rushes from the room and returns to his

    asked by Franco
  284. English English plz

    please check my work. "Paradise lost" is a very interesting and religious story. The write make a point to describe the unfaithfulness of angles and fall of human from the heaven. The basic theme of the poem is man‘s first disobediently to God. “Of

    asked by Anonymous
  285. government

    Which of the following falls under the authority of Congress?

    asked by Anonymous
  286. English

    A: What do you think of a solar house. 1. I think the solar house makes money for us. 2. I think we can save energy thanks to the solar house. 3. I think we don't need to spend money on electricity. 4. I think we don't need to pay the electricity fee. 5. I

    asked by rfvv
  287. English

    (1) Are you doing any volunteer work? How about your friends? 1. Yes, I am. They are doing (some) volunteer work, too. 2. No, I'm not. They are not doing (any) volunteer work, either. (2) Do you do any volunteer work? How about your friends? 1. Yes, I do.

    asked by rfvv
  288. ALgebra

    multiply. (x+2)(x-2)(x^2+4)

    asked by mike
  289. compent

    I need two paragraph about how interest rates affect our purchasing decision. identify the topic sentence in each by underlining it.

    asked by cheryl
  290. Precalculus

    State the amplitude, period, and phase shift of the function. h(t)=-9cos(7t-Pie/5) I got the amplitude and the period. For the phase shift I got (Pie/5)/7 but its wrong. Can someone tell me what I did wrong?

    asked by Anonymous
  291. algebra

    2 over 3 = 11 over 8 +b

    asked by saleh
  292. 4th grade

    this year spring parade has a marching band, pairs of dancers, a float with jugglers, a dozen circus clowns, a girl scout troop a boy scout pack, and a championship football team. Directions: Read the description of each group carefully and decide how many

    asked by tristen
  293. math

    There were 29 students who completed a survey. There were 15 boys and 14 girls. One survey was picked at random. To the nearest hundredth, what is the probability it was completed by a girl? A.0.48 B.1.93 C.0.52 D.0.93

    asked by Daphne
  294. math

    Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern

    asked by Evelyn
  295. history

    Why would some people find it wrong to have a woman president for to represent their country?

    asked by Mike
  296. math

    lim as x heads toward infinity of x^200/e^.02x

    asked by Anonymous
  297. MATH HELP ME 1st

    (-6) + (-4) = i think the answer is 10 or it could be -10

    asked by lily
  298. math

    Suppose that Helen buys three items for 47 cents each, five items for 71 cents each, and two items for 1.21 each. What was the average cost of all the items she bought? Would the answer be 74 cents?

    asked by m
  299. English Help

    Please check grammatical errors. "Paradise lost" is a very interesting and religious story. The write make a point to describe the unfaithfulness of angles and fall of human from the heaven. The basic theme of the poem is man‘s first disobediently to

    asked by Shan
  300. chemistry

    how do you find delta G the same way you find max work?

    asked by steve
  301. math

    A box and whisker graph showing beef hotdogs with high and low of 110-190 and meat hotdogs with high and low of 105-195 and poultry hot dogs with 85-170. This suggests that poultry dogs have fewer calories per dog than either beef or meat hotdogs. Yet, one

    asked by m
  302. college

    I will like to know is this pargraph is correct. Why are many students choosing to pursue their college degrees using their home computers. Benjamin Franklin said; A penny saved is a penny earned.” This principle applies to the american and foreign

    asked by samantha
  303. chemistry

    if i have a molar concentration of acetic acid.046 mol/L how do i get the calculated molar mass of acetic acid

    asked by Louis
  304. college

    the perimeter of a rectangle is twice the sum of its width and it length. the perimeter is 40meters and its lenght is 2 meters more than twice its width.

    asked by kara
  305. L.A.

    what are some sentences of the word barbarous

    asked by yuku
  306. organic chemistry

    Something that isn't consumed by the reaction (so say A) is dissolved at the same time as something that is consumed by the reaction (B) in a solvent, so that they are in the same phase...what is this reaction an example of? What is the most pervasive

    asked by ????
  307. math

    find the domain and all the critical points of the function. a) x(the square root of (4-x^2)) The domain is x must be less than or equal to positive or negative two but when i go to do the derivative to find the critical points i always get stuck. can

    asked by Anonymous
  308. English

    1. The energy comes from sunlight. 2. The energy comes from the sunlight. (Which one is right? Do we have to use 'the' or not?)

    asked by rfvv
  309. Geography

    We have to define the stages of economic growth and place one Latin America country under each stage. One of the stages is capital intensive. Wealth is created through the efficient use of money. Industrailziation manufacturing occurs. Investment/loans to

    asked by Mia
  310. Computers C

    Backgound The employees can be any one of the two types: 1) Full-Time Salaried (FTS) and 2) Part-Time Hourly (PTH). Currently, there are totally 1050 FTS employees and 274 PTH employees in a company. The company plans to add up to 50 new employees FTS

    asked by Bob
  311. Math Decimals

    Jhon measured the diameter of four steel rods. Compare his Measurements below. which one is the largest 0.025 ,0.026,0.24,0.25

    asked by Mukaya
  312. MATH HELP NEEDED

    yfrog./ 9escreenshot25ucj img338.imageshack.us /img338/7823/screenshot25uc.jpg

    asked by Frank