Most popular questions and responses by nick
  1. Language Arts

    Can someone please check these answers I cant risk getting a bad grade at this point. These are from the book "The Giver" 1. At the beginning of the novel, Jonas describes himself as apprehensive. Why is he apprehensive? A. An unknown plane is flying

    asked on June 5, 2015
  2. spanish please check!

    Yo fue al dentista la semana pasada Pablo corrio el perro y su por parque ellos leyo periodicos tres cada dia Dona Rita supo la historia de nunca la verdad

    asked on August 25, 2014
  3. Health

    {1} which is the best example of a win-win situation. A. One side gets what it wants.... B. Both sides get what they want but one side get more.... C equal need are met for both sides....D neither side get what it wants. I think C is the answer. {2} A

    asked on January 11, 2016
  4. Statistics

    A manufacturer ship toasters in cartons of 10. In each carton, they estimate a 20% chance that one of the toasters will need to be sent back for minor repairs. What is the probability, that in one carton there will be 5 toasters that need repair? I have no

    asked on October 5, 2013
  5. Calculus

    If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.) What is the average speed over the given time intervals? (i) [1, 2] (ii) [1, 1.5]

    asked on January 31, 2018
  6. Physics

    The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in 2.6 s. 1. What is the angular acceleration as the blades slow down?

    asked on November 22, 2010
  7. chemistry

    Two liquids of different densities (ρ1 = 1500 kg/m3, ρ2 = 500 kg/m3) are poured together into a 100 L tank, filling it. If the resulting density of the mixture is 800 kg/m3, find the respective masses of the liquids used.

    asked on August 29, 2012
  8. chemistry

    SO2 (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0 °C. The partial pressure of CO2 in the container was __________ atm.

    asked on May 2, 2010
  9. Calculus

    Two people start from the same point. One walks east at 5 mi/h and the other walks northeast at 7 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to three decimal places.)

    asked on March 11, 2014
  10. math/algebra

    why did the kangaroo see a psychiatrist?

    asked on June 29, 2015
  11. physics

    A lead ball is dropped into a lake from a diving board 5.24 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.86 s after it is dropped. (Assume the positive

    asked on September 7, 2009
  12. algebra I

    find all numbers such that a third of a number increased by half that number is at least 3 less than that same number. not sure what to do

    asked on September 23, 2015
  13. chemistry

    Gold has a latent heat fusion of 64.5 J/g. How much energy is required to melt 20.0 g of gold?

    asked on October 18, 2016
  14. Chemistry

    Given the following equation: 2KClO3---> 2KCl+3O2 How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?

    asked on February 8, 2011
  15. physics

    An animal-rescue plane flying due east at 40 m/s drops a bale of hay from an altitude of 73 m . The acceleration due to gravity is 9.81 m/s. If the bale of hay weighs 177 N , what is the momentum of the bale the moment it strikes the ground? part 2 At

    asked on January 3, 2014
  16. math

    when 4 times a number n is decreased by 3 its at most 21

    asked on January 11, 2016
  17. Chemistry 2

    Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.62 kJ are released per gram of styrene. Find the standard

    asked on February 6, 2011
  18. physics

    How far does a plane fly in 17 s while its velocity is changing from 144 m/s to 75 m/s at a uniform rate of acceleration?

    asked on September 16, 2019
  19. Statistics

    Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (°𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (°𝐹) 𝑎𝑡 6 𝑝𝑚: 98.0,97.6,98.8,98.0 Assume the sample data are

    asked on April 26, 2016
  20. chemistry

    The reaction of 9.3 grams of fluorine with excess chlorine produced 4.1 grams of ClF3. What percent yield of ClF3 was obtained?

    asked on August 30, 2012
  21. Math

    Kenny wants to invest $250 every three months at 5.2%/a compounded quarterly. He would like to have at least $6500 at the end of his investment. How long will he need to make a regular payments? *PLEASE SHOW WORK*

    asked on January 17, 2016
  22. World Geography

    please Write a short essay comparing the ways in which command economies and market economies affect a worker's life? or if you want exp it a little better to me.

    asked on February 15, 2010
  23. Chemistry (Stoichiometry)

    Magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. a) Write a balanced chemical equation for this reaction. b) What is the percentage yield if 10.1g Mg reacts with an excess of water and 21.0g Mg(OH)2 is recovered? c) If 24g

    asked on March 2, 2011
  24. calculus

    Assume a substance has a half-life of 11 years and the initial amount is 144 grams. How much remains at the end of 5 years? How long will it be until only 30 % remains?

    asked on September 14, 2010
  25. Calculus

    If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.) (i) [1, 2] (ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001]

    asked on January 31, 2018
  26. physics

    Suppose that, on a day when the outside temperature is 15 degrees Celsius, we fill a balloon with pure nitrogen gas, of which the molar mass is 28 grams per mole. Now suppose that we want to heat up a second (equally large) balloon containing air, such

    asked on March 27, 2014
  27. AP Chemistry

    HBr is mixed with water. Which is the best description of what you would expect to find in the solution? 1. H3O+, Br1−, and water molecules 2. HBr molecules, H3O+, Br1−, and water molecules 3. Br+, OH1−, and water molecules 4. HBr molecules and water

    asked on September 17, 2010
  28. physics

    The figure below shows a clawhammer as it is being used to pull a nail out of a horizontal board. A force of magnitude 130 N is exerted horizontally as shown. (NOTE: Assume that the force the hammer exerts on the nail is parallel to the nail and

    asked on April 7, 2015
  29. Algabra 1

    Need help stuck on question. Find the range of f(x)=3g-5 for the domain (-1.5,2,4) A- (-8,10,-1,-1) B- (-9.5,1,7) C- (8,10,1,1) or D- (9.5,-1,-7)

    asked on February 26, 2013
  30. physics

    Suppose that a party balloon is spherical, has a radius of 16 centimetres and is filled with helium. Furthermore suppose that we do our experiment under standard atmospheric conditions, when the air density is \(\rho = 1.225 kg/m^3\). How many of these

    asked on March 26, 2014
  31. Physics

    The figure shows an arrangement in which four disks are suspended by cords. The longer, top cord loops over a frictionless pulley and pulls with a force of magnitude 93.4 N on the wall to which it is attached. The tensions in the shorter cords are T1 =

    asked on February 23, 2016
  32. physics

    Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic metres and could lift 780 kilograms (that includes the balloon, basket and payload). Assume that the balloon took off on a day

    asked on March 27, 2014
  33. Chem 12

    How can I do this: 3KNO3(aq)+ Fe(SCN)3(aq) + NaOH(aq) ? what do you have to do? write the products it makes. I don't know the products it makes. I have to figure out what adding all those produces. Im not sure its even possible? yes it is possible. first

    asked on December 3, 2006
  34. AP Chem

    Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.054 moles of sulfuric acid is mixed with water to make 667 milliliter of solution,what is the molarity of H+? Answer in units of M doing mole/liter doesn't work

    asked on April 1, 2012
  35. Algebra

    Gymnast Clothing manufactures expensive soccer cleats for sale to college bookstores in runs of up to 500. Its cost (in dollars) for a run of x pairs of cleats is C(x) = 3000 + 9x + 0.1x2 (0 ≤ x ≤ 500). Gymnast Clothing sells the cleats at $130 per

    asked on February 19, 2012
  36. Physics

    A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 4.6×10−5 rad. 1. What diameter spot will it make on the Moon?

    asked on November 22, 2010
  37. calculus

    Sketch the region in the first quadrant enclosed by y=6/x, y=2x, and y=12x. Decide whether to integrate with respect to x or y. Then find the area of the region.

    asked on July 18, 2015
  38. History

    How did geography affect arab life

    asked on November 7, 2009
  39. Accounting

    Cruise industries purchased $10,800 of merchandise on February 1, 2007, subject to a discount trade of 10% and with credit terms of 3/15, n/60. It returned $2,500 (gross price before trade or cash discount) on February 4. The invoice was paid on February

    asked on September 9, 2011
  40. physics

    A typical sugar cube has an edge length of 1.0 cm. If you had a cubical box that contained 1.7 mol of sugar cubes, what would its edge length be? (One mole = 6.02 x 1023 units.) and A severe thunderstorm dumped 2.6 in of rain in 30 min on a town of area 32

    asked on January 26, 2011
  41. Calc

    How do I evaluate lim as h->0 [5((1/2)+h)^4 - 5(1/2)^4]/h

    asked on January 6, 2009
  42. Spanish

    complete sentences using the information provided. Use the preterite tense of the verb. 1. ir / al / semana / pasada / yo / dentista / la 2. parque / Pablo / y / correr / perro / su / por / el día / leer / ellos / periódicos / tres / cada 4. nunca / la

    asked on August 25, 2014
  43. Calculus

    If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.) What is the average speed over the given time intervals? (i) [1, 2] (ii) [1, 1.5]

    asked on January 31, 2018
  44. Another Physics

    At some point in the combustion cycle of an engine, the temperature of a combusted air-fuel mixture is 582 degrees Celsius. Given that the pressure in the mixture is 6.2 bar, determine the density of the mixture (in kilogram per cubic metre).

    asked on March 28, 2014
  45. pysics

    550 g of water (cw = 4186 J/kg.K) at 75°C is poured into an 855 g aluminum (cw =900 J/kg.K) container with an initial temperature of 11°C. What is the final temperature of the system, assuming no heat is exchanged with the surroundings? Select one: a. 75

    asked on May 17, 2016
  46. AP Chemistry

    Titanium metal has a body-centered cubic unit cell. The density of Titanium is 4.50 g/cm^3. Calculate the edge length of the unit cell and a value for the atomic radius of titanium. Ok, I know how to find the density using the atomic radius, but I'm having

    asked on January 1, 2008
  47. Math

    an electrician needs to run a cable from the top of a 48-foot tower to a transmitter box located 20 feet away from the base of the tower. Find how long he should cut the cable.

    asked on November 3, 2015
  48. Calc 1 (Optomization)

    A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its width. The material for the base costs $6 per square meters and the material for the sides costs $10 per square meter. Find the

    asked on April 6, 2012

    If a charged sphere is brought close to a rod as shown in Figure A, the pairs of pith balls suspended at the ends of the rod will as the figure im reading is showing there is a charged sphere to the left then a induced charged on the rob which the pith

    asked on April 24, 2014
  50. Social Studies

    Which of the following accurately describes the workforce of both the U.S and Canada? A. Most jobs in both countries are found in service industry. B. Most jobs in both countries are found in manufacturing. C. Most jobs in both countries are faced with

    asked on December 12, 2018
  51. statistics

    a simple random sample of size n=5 is obtained from the population of drivers living in New York City, and the breaking reaction time of each driver is measured. The results are to be used for constructing a 95% confidence interval. What is the number of

    asked on March 30, 2011
  52. Global History

    I need answers for "GLOBAL HISTORY REGENTS REVIEW" packet. Associated names are Mr. Moeller and Mrs. Sita. I can't find answers anywhere. The packet can be found blank online here: johnbowne DOT

    asked on May 4, 2014
  53. Physics

    A 0.028 kg rifle bullet traveling 210 m/s buries itself in a 3.1 kg pendulum hanging on a 2.5 m long string, which makes the pendulum swing upward in an arc. 1. Determine the vertical and horizontal components of the pendulum's displacement.

    asked on November 12, 2010
  54. English

    Identify the word in bold type. THIS is the dog I was telling you about. A)demonstrative pronoun B)indefinite pronoun C)interrogative pronoun D)relative pronoun E)not a pronoun

    asked on April 5, 2010
  55. English

    I need help answeringthis question about a poem. i will write the instructions below..Thank you How does Martin Espada use imagery,setting, and figures of speech to convey the idea in " Latin Night at the Pawnshop"? the only problem i am having is

    asked on October 19, 2007
  56. Physics

    A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 20°. For a speed of 29 m/s, at what value of the distance d should a driver

    asked on March 2, 2011
  57. Physics

    A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm. 1. What is the speed of the arrow as it leaves the bow?

    asked on November 1, 2010
  58. chemistry

    Ethyl alcohol has a heat of vaporization of 850. J/g. What mass of ethyl alcohol can be boiled using 15000 J of energy?

    asked on October 18, 2016
  59. Maths

    This problem is related to Vieta's formulas on symmetric polynomials. The cubic equation x^3 - x^2 - 4x +3 =0 has real solutions a, b and c. What is the value of a+b, b+c and a+c.

    asked on July 17, 2019
  60. calculus

    If the fish population, p, in a lake can be modelled by the function p(t)=15(t^2+30)(t+8), where t is the time, in years , from now. How do I determine the rate of change when the population when there are 5000 fish in the lake?

    asked on March 5, 2011
  61. Physics

    A novice skier, starting from rest, slides down a frictionless 35.0 degrees incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?

    asked on November 2, 2010
  62. mentor high

    What is the density of carbon dioxide gas if 0.196 g occupies a volume of 100 ml?

    asked on September 3, 2008
  63. math

    What is 26cm:4m ratio in simplest form?

    asked on October 20, 2015
  64. Short Stories

    1.In "Paul's Case," why does Paul go to work early? A. He didn't want to get caught skipping school. B. He liked looking at the pictures in the art gallery. C. He wanted to wrestle with the other boys. D. He didn't want to lose his job. (B) ? 2. Which one

    asked on February 18, 2012
  65. Chemistry 102

    For a question like “calculate the pH of an aq.solution that is 1.0 M CH3COOH and 1.0 M CH3COONa, how do you know to write the equation like this: CH3COOH + H2O => H3O+ + CH3COO- and not like H3O+ + CH3COO- => CH3COOH + H2O for the ICE chart. This would

    asked on May 3, 2010
  66. 11th grade math algebra 2 trig

    you are buying beads and string to make a necklace. the string coast $1.50 a pack of 10 decorative beads costs $0.50 and a pack of 25 plain beads costs $0.75 you can only spend $7.00 and you need 150 beads you wish the necklace to be as decrative as

    asked on October 9, 2008
  67. English

    Identify the type of conjunction in the following sentence. We'll be able to eat when Grandma arrives. A)conjunctive adverb B)coordinating conjunction C)correlative conjunction D)subordinating conjunction

    asked on April 5, 2010
  68. Maths

    How do I find non-decimal solutions for the two following cubic equations ? x^3-11x^2-4x-44=0 x^3+11x^2-4x+44=0

    asked on July 17, 2019
  69. Math

    A truck traveling at an average rate of 45 miles per hour leaves a rest stop. Fifteen minutes later a car traveling at an average rate of 60 miles per hour leaves the same rest stop traveling the same route. How long will it take for the car to catch up

    asked on February 12, 2013
  70. Need help on Physics!!

    Three uniform spheres are fixed at the positions shown in the diagram. Assume they are completely isolated and there are no other masses nearby. (a) What is the magnitude of the force on a 0.20 kg particle placed at the origin (Point P)? What is the

    asked on March 31, 2014
  71. Calculus

    A lighthouse is located on a small island 4 km away from the nearest point P on a straight shoreline and its light makes three revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1 km from P? (Round your answer to

    asked on March 11, 2014
  72. Math

    There are 140 people in a singing competition. The graph shows the results for the first five rounds.

    asked on October 2, 2019
  73. World History

    1. What is Social Darwinism and how was it tied to imperialism? Social Darwinism is the belief of “Survival of the Fittest”. During the struggle between nations there were different factors that went into how you were treated like your ranking in

    asked on March 5, 2015
  74. math

    The accompanying tree diagram represents a two-stage experiment. (Let x = 0.3, y = 0.7, r = 0.55, s = 0.45, t = 0.55, and w = 0.45.) (a) Find P(A) · P(D | A). Correct: Your answer is correct. (b) Find P(B) · P(D | B). Incorrect: Your answer is incorrect.

    asked on February 24, 2015
  75. physics

    a feather is dropped on the moon from a height of 1.4 meters.the acceleration of the moon is 1.67 m/s determine the time for the feather to fall on the surface of the moon

    asked on August 5, 2013
  76. Physics

    An outfielder throws a 0.145 kg baseball to the shortstop with a speed of 30 m/s at an angle of 20 degrees above the horizontal. How far does the ball travel? (Assume the shortstop catches it at about the same height that the outfielder throws it.)

    asked on September 27, 2012
  77. Physics

    A novice skier, starting from rest, slides down a frictionless 35.0 degree incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?

    asked on November 1, 2010
  78. Physics

    A steady horizontal force F if magnitude 21N is apllied at the axle of a solid disk. the disk has mass 2.0kg and diameter of 0.10m. What is the linear speed of the center of the disk after it has moved 12m?

    asked on February 18, 2008
  79. math

    graph the function and use graph to find the indicated limit f(x) = 7e^x, Lim x --> 0 F(x)

    asked on February 27, 2018
  80. Finance

    Thomson Media is considering some new equipment whose data are shown below. The equipment has a 3 year tax life and would be fully depreciated by the straight line method over 3 years but it would have a positve pre-tax salvage value at the end of year 3,

    asked on April 12, 2011
  81. chemistry

    A student melts 50.0 grams of ice using 16650 J of energy. What is the heat of fusion of ice?

    asked on October 18, 2016
  82. physics

    The head of a rattlesnake can accelerate 50 m/s2 in striking a victim. If a car could do as well, how long would it take to reach a speed of 78 km/h from rest?

    asked on September 3, 2009
  83. physics

    In the figure below, a slide loving pig slides down a certain 18° slide in twice the time it would take to slide down a frictionless 18° slide. What is the coefficient of kinetic friction between the pig and the slide? Explanation would be helpful.

    asked on September 23, 2009
  84. physics

    After flying for 15 min in a wind blowing 42 km/h at an angle of 20° south of east, an airplane pilot is over a town that is 42 km due north of the starting point. What is the speed of the airplane relative to the air?

    asked on September 17, 2009
  85. Maths

    Using Vieta's formula, given a+b+c =1 ab+bc+ac=-4 abc=-3 How do I find a+b, b+c and a+c?

    asked on July 17, 2019
  86. Chemistry

    How many moles of chloroform, CHCl^3, are required to fill a 253-ml flask at 100.0 degrees Celsuis and 940 torr?

    asked on March 14, 2011
  87. Physics

    Tom the train and Dan are involved in an elastic collision. A 2.5 kg Tom is, at rest but is approached head-on by a 5.0 kg Dan moving at 0.60 m/s. The force-separation graph for the ensuing collision is given: the picture of the graph is found here:

    asked on March 25, 2012
  88. Calculus

    Scorpion Gulch and Western Railway are preparing to build a new line through Rolling Mountains. They have hired you to do some calculations for tunnels and bridges needed on the line. You set up a Cartesian coordinate system with its origin at the entrance

    asked on September 23, 2014
  89. math

    What is the average of 12,43,37,40 please

    asked on October 18, 2011
  90. chem

    Aqueous sodium chloride and aqueous sulfurous acid are formed by the reaction of aqueous sodium sulfite and aqueous hydrochloric acid . write the balanced equation?

    asked on September 18, 2012
  91. Math

    A certain car is about 100in. long and 60 in. wide. You plan to make a model of this car that is 9 in. wide. How long will your model be?

    asked on January 22, 2013
  92. Math

    There are 140 people in a singing competition. The graph shows the results for the first five rounds. Write an expression for the number of people after x rounds.

    asked on October 2, 2019
  93. Chemistry

    What volume of a 0.50 M solution of H2SO4 is required to completely neutralize 3.0 grams of NaOH? Write the equation.

    asked on October 8, 2012
  94. soil mechanics

    total normal stresses of 110 and 40 kpa are applied to two planes at right angles in an element of soil. the shear stress acting on those palnes is 20 kpa. what must be the value of the pore pressure in the element if the minor principle stress in the

    asked on September 19, 2010
  95. Chemistry

    Prediction of colors for V(CN)6 ^-2, VCl6 ^-2, and V(edta)? I think the above are transition metal complexes and if it helps the link below contains some of the energy levels and colors

    asked on November 21, 2018
  96. physics

    At some point in the combustion cycle of an engine, the temperature of a combusted air-fuel mixture is 582 degrees Celsius. Given that the pressure in the mixture is 6.2 bar, determine the density of the mixture (in kilogram per cubic metre).

    asked on March 27, 2014
  97. Physics

    A spring has a spring stiffness constant, k, of 420 N/m . 1. How much must this spring be stretched to store 30 J of potential energy?

    asked on November 1, 2010
  98. History

    What items brought to the Americas from Europe in the Columbian Exchange changed Native Americans' daily lives? Select all that apply. A.horses B.corn C.cows D.potatoes E. sugar

    asked on February 28, 2019
  99. Chemistry

    A chemist wants to make 150 mL of a 1.26 M solution of carbonic acid to be used in the lab. How many grams of H2CO3 does the chemist need to make this solution? I converted mL to .150L, multiplied .150*1.26= =0.189 to get mol. H2CO3=62.028 so I multiplied

    asked on June 6, 2015
  100. math

    use an integer to represent the change in the airplanes airplane descends 5,000 feet.

    asked on August 28, 2016


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