Popular questions and responses by nick
  1. 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
  2. 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
  3. 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
  4. history

    Which best defines ISIS? A UN oversight group sent to monitor the situation in Iraq and Syria The terrorist organization that established the al-Qaeda movement A terrorist offshoot of al-Qaeda known for its brutality and extremism Members of the Muslim

    asked on May 3, 2020
  5. 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
  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. finance

    Kohers Inc is considering a leasing arrangement to finance some manufacturing tools that it needs for the next 3 years. The tools will be obsolete and worthless after 3 years. The firm will depreciate the cost of the tools on a straight-line basis over

    asked on April 13, 2011
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. Chemistry

    I am confused about this problem. Any help is appreciated. A chemist performs a series of reactions that produce binary lithium compounds. The elements include sulfur, chlorine, nitrogen, fluorine, selenium, oxygen, and iodine. The models below represent

    asked on April 11, 2020
  19. Algebra

    If p(x) is a polynomial and is divided by (x-k) and a remainder is obtained, then that remainder is p(k). If the quadratic p(x)=x^2-3x+5 gives the same remainder when divided by x+k as it does when divided by x-3k find the value of k, k is not equal to 0.

    asked on August 2, 2014
  20. 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
  21. 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
  22. 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
  23. 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
  24. Chemistry

    Draw the Lewis structures for each of the following, determine the shape of the molecules. a. H2S b. CN3- c. CCl4 d.NH4 e.PO4- f.PCL3 f.SF6 and explain how do you determine the shape of it

    asked on November 11, 2010
  25. 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
  26. 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
  27. Statistics

    Direct mail advertisers send solicitations (that is "junk mail") to thousands of potential customers in the hope that some will buy the company's products. The response rate is usually quite low. Suppose a company wants to test the response rate for a new

    asked on October 27, 2013
  28. Math

    Let the polar coordinates of the point (x, y) be (r, θ). Determine the polar coordinates for the point (2x, y)

    asked on March 17, 2020
  29. 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
  30. 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
  31. introduction to computers

    which selection below represents an entry that would be seen in the active box? A. =sum(A1:A3) B. 15 C. (A1:A4) D. E11

    asked on July 12, 2015
  32. Math

    Find the minimum and maximum possible areas of a rectangle measuring 6 km by 11 km.

    asked on February 12, 2013
  33. Calculus

    Using separation of variables, solve the following differential equation with initial conditions dy/dx = e^(2x+3y) and y(0) = 1. Hint: use a property of exponentials to rewrite the differential equation so it can be separated

    asked on August 14, 2018
  34. 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
  35. math/algebra

    why did the kangaroo see a psychiatrist?

    asked on June 29, 2015
  36. AP Chemistry

    Which of the following sets of quantum numbers are allowed for an electron in a hydrogen atom? a)n=3, l=0, ml=0 b)n=4,l=1,ml=-1 c)n=2,l=1,ml=-2

    asked on October 19, 2014
  37. math

    Area A sequence of smaller squares is formed by connecting the midpoints of the sides of a larger square. (a) If the area of the largest square is 1 square unit, determine the first five terms of a sequence that describes the area of each successive

    asked on April 19, 2012
  38. trig

    Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.

    asked on May 8, 2011
  39. 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
  40. 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
  41. geometry

    if a plane leaves a horizontal at an angle of 60 degrees and at 1 minute reaches a point of 12 miles how fast is the plane going.... "reaches a point of 12 miles" is ambiguous. Do you mean 12 miles in the air (elevation), perpendicular to the ground? Or,

    asked on October 15, 2006
  42. science

    Which option can be correctly defined as a device that steps up or steps down voltage? A.battery B.electrical transformer C.electrical generator D.electromagnet A?

    asked on May 4, 2020
  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. 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
  45. Math

    Runner A crosses the starting line of a marathon and runs at an average pace of 5.6 miles per hour. Half an hour later, Runner B crosses the starting line and runs at an average rate of 6.4 miles per hour. If the length of the marathon is 26.2 miles, which

    asked on February 12, 2013
  46. 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
  47. math

    Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble, replacing it, and then picking a brown marble?

    asked on January 31, 2012
  48. Finance

    Kohers Inc is considering a leasing arrangement to finance some manufacturing tools that it needs for the next 3 years. The tools will be obsolete and worthless after 3 years. The firm will depreciate the cost of the tools on a straight-line basis over

    asked on April 12, 2011
  49. 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
  50. 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
  51. 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
  52. 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
  53. business communication

    Your boss wants to send a brief email message welcoming employees recently transferred to your department from your Hong Kong branch. They all speak English, but your boss asks you to review his message for clarity. What would you suggest your boss change

    asked on July 28, 2010
  54. 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
  55. 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
  56. Chemistry

    I am confused about this problem. Any help is appreciated. A chemist performs a series of reactions that produce binary lithium compounds. The elements include sulfur, chlorine, nitrogen, fluorine, selenium, oxygen, and iodine. The models below represent

    asked on April 11, 2020
  57. 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
  58. Physics

    A 2.00kg solid sphere of radius 5.00cm rolls down a 20 degrees inclined plane starting from rest. (a) What is the magnitude of the acceleration of the center of mass of the sphere? (b) How far down the plane does it roll without slipping in 1.00s?

    asked on November 29, 2014
  59. algebra

    A store sells mixtures of almonds and cashews for $6.50 per pound. Peanuts sell for $2.95 per pound and cashews sell for $7.95. How many pounds of each should be used to make 80 pounds of this mixture?

    asked on May 28, 2014

    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
  61. Help Please!!Edu

    what does research show about the child's relationship with the primary parental figure when the child has additional attachments to other people?

    asked on December 16, 2012
  62. math

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

    asked on October 18, 2011
  63. Finance

    Sutton Corporation, which has a zero tax rate due to tax loss carry-forwards, is considering a 5 year, $6,000,000 bank loan to finance service equipment. The loan has an interest rate of 10% and would be amortized over 5 years, with 5 end-of-year payments.

    asked on April 12, 2011
  64. calculus

    In a certain region, the number of bushels of corn per acre, B, is given by the function B(n)=-0.1n^2 + 10n, where n represents the number of seeds, in thousands, planted per acre. If corn sells for $3/bushel and cost $2 for 1000 seeds, find the optimal

    asked on April 4, 2011
  65. 7th grade math

    500 divided by 100 explain the decimal movement when dividing by 100.

    asked on January 6, 2011
  66. algebra

    For 1983 through 1995, the amount of private donations D (in millions) allocated to education can be modeled by D= 1.78t^3-6.02t^2+ 752t+ 6701 where t is the number of years since 1983. In what year was 14.3 billion of private donations allocated to

    asked on October 30, 2010
  67. 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
  68. writing

    This is the assignment: Reread either Andy Rooney’s essay on page 96 or Sarah Penning’s essay on page. 97. Select either essay as your starting point and discuss the terms they write about. What is your reaction to the thesis of either in relation to

    asked on June 27, 2007
  69. Math

    MIKE has a dog pen with an area of 120 sq. Feet. What is its width?

    asked on May 30, 2017
  70. 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
  71. 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
  72. math

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

    asked on January 11, 2016
  73. Math

    If a 14-ft ladder leans against a building, with an angle of elevation of 70°, how far up the building will the ladder reach? I believe this requires law of cosines but otherwise I am lost.

    asked on December 11, 2015
  74. Chemistry

    In the electrolysis of water 75.0 cm3 of oxygen gas are produced.How many cm3 of hydrogen are produced ?

    asked on November 23, 2015
  75. AP Physics

    A passenger train is traveling at 27 m/s when the engineer sees a freight train 345 m ahead of his train traveling in the same direction on the same track. The freight train is moving at a speed of 5.9 m/s. (a) If the reaction time of the engineer is 0.36

    asked on August 15, 2015
  76. chemistry

    How many sigma (σ) bonds and pi (π) bonds are in one molecule of arsenic acid, H3AsO4

    asked on May 2, 2015
  77. math

    given that the rectangle above has a perimeter of 34 units, find m

    asked on March 31, 2015
  78. Math

    Adrian jogs 3/4 mile each morning how many days will it take him to jog 3 miles what do you do

    asked on January 20, 2015
  79. Calculus Help

    If f(x) = sin(7 − 5x), find f′(π), which is the derivative at π: −0.754 −0.657 0 0.657 3.770 I chose 0.657 ... I did not really get this exact answer, its just that while I was trying to figure this out my answer was actually 0.6978 but I just

    asked on November 16, 2014
  80. 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
  81. physics

    A typical volume of a modern hot air balloon is 2500 cubic metres, and a typical maximum temperature of the hot air is 120 degrees Celsius. Given these figures, and an outside air temperature and density of 15 \(^{\circ}C\) and 1.225 \(kg/m^3\)

    asked on March 27, 2014
  82. Statistics

    The soccer team's shirts have arrived in a big box and people start grabbing them. The box contains 7 medium, 12 Large, and 11 extra-large shirts. What is the probability that the first 4 shirts are all extra large? I have been struggling with the problem

    asked on October 1, 2013
  83. Math-algebra-Steve

    The sequence {an} satisfies a0=1,a1=213, and an=2an−1+an−2 for all n≥2. Let S=∑i=1 to infinity a[i-1]/(a[i]^2-a[i-1]^2) What is the value of 1/S?

    asked on June 24, 2013
  84. physics

    Romeo takes a uniform 13.7-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's mass is 23.2 kg and the bottom rests on the ground 3.43 m from the wall. When Romeo, whose mass is 70 kg, gets 88.3 percent of

    asked on February 17, 2013
  85. chemistry

    A 33.8 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 20.7 g. What was the mass of iron in the sample of ore?

    asked on August 30, 2012
  86. 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
  87. math

    How can estimating help you add two-digit numbers?

    asked on November 7, 2011
  88. 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
  89. 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
  90. Chemistry

    Cu (I): CN- Pb2+: CN-, SO3^2-, PO3^3-,MnO4- Ca2+: CN- Al3+: CN-, SO3^2-, PO3^3-,MnO4- Cr5+: CN-, SO3^2-, PO3^3-,MnO4- Pb4+: CN- Sn2+: CN- Mn2+:MnO4- Ag+:CN-, SO3^2-, PO3^3- H+: CN-, SO3^2-, PO3^3-,MnO4-

    asked on October 27, 2010
  91. 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
  92. AP Chemistry

    Although soluble barium compounds are toxic, suspensions of insoluble barium sul- fate are routinely swallowed for upper gas- trointestinal X-ray studies. Why is barium carbonate not used? 1. Barium carbonate is too expensive. 2. Barium carbonate is

    asked on September 17, 2010
  93. math

    A sheet of plywood measures 4 feet by 8 feet. Armand wants to build a dog house using one whole sheet of plywood for the floor. a. Armand needs to put a "2 by 4" under the outer edges all the way around the floor, and another "2 by 4" that runs down the

    asked on May 4, 2010
  94. English

    Identify the word in bold type. None of those bagels look fresh. A)demonstrative pronoun B)indefinite pronoun C)interrogative pronoun D)relative pronoun E)not a pronoun

    asked on April 5, 2010
  95. Mircoeconomics

    A significant difference between monopoly and perfect competition is that: A. free entry and exit is possible in a monopolized industry but impossible in a competitive industry. B. competitive firms control market supply but monopolies do not. C. the

    asked on June 22, 2009
  96. Physics

    The earth orbits the sun once a year (3.16 multiplied by 10^7 s) in a nearly circular orbit radius 1.50 multiplied by 10^11 m. With respect to the sun, determine the following. (a) the angular speed of the earth

    asked on November 14, 2008
  97. 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
  98. 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
  99. 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
  100. physics

    a 75kg skater is travelling at 15m/s stops suddenly on the ice. If the ice is at 0 degrees and it is assumed that all of the skaters energy is converted to heat, how much ice does he melt? (latent heat of fusion for water is 3.3x10^5 J/kg)

    asked on December 16, 2007


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