Popular questions and responses by ashley
  1. Physics

    A ventilation fan has blades 0.25 m long rotating at 20 rpm. What is the centripetal acceleration of a point on the outer tip of a blade?

    asked on June 8, 2010
  2. Physics

    A beam of electrons traveling with a speed of 3.00 x 107 m/s enters a uniform, downward electric field of magnitude 1.17 x 104 N/C between the deflection plates of an oscilloscope (the figure below ). The initial velocity of the electrons is perpendicular

    asked on January 31, 2012
  3. physics

    A student pulls a box of books on a smooth horizontal floor with a force of 100 N in a direction of 30° above the horizontal. If the mass of the box and the books is 40.0 kg, what is the acceleration of the box? Square root of three meters per second

    asked on February 5, 2014
  4. Spanish

    I wanted to know if i used the right verbs Complete the sentences with the correct forms of conseguir, ir, pensar, querer, or suponer. 1. Nosotros (blank) de excursión a las montañas, Toño. 2. ¡Yo (blank) que vas a dormir todo el fin de semana! 3. No,

    asked on October 29, 2013
  5. Life Orientation

    1: Define inhumane farming methods 2: Give at least three examples of inhumane farming methods and motivate why you regard them as inhumane 3: Suggest and motivate at least four ways by which these farming methods could be made humane

    asked on August 16, 2016
  6. physics

    A 4.170 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is μs = 0.505 and the coefficient of kinetic friction is μk = 0.255. At time t = 0, a force F = 12.7 N is applied horizontally to the block.

    asked on October 25, 2012
  7. Bus. Math

    What is the effective interest rate of an 8% 13-week Treasury bill? Assume it is a $10,000 Treasury bill, and round your answer to the nearest hundredth percent. A. 8.20% B. 9.00% C. 8.17% D. 8.16% Answer: D??

    asked on April 4, 2016
  8. Chemistry 2

    How many grams of nickel metal are plated out when a constant current of 15.0 A is passed through aqueous NICl2 for 60.0 minutes. Show all work. Please help!

    asked on December 4, 2012
  9. Math

    A standard deck of playing cards is shuffled and three people each choose a card. Find the probability that the first two cards chosen are clubs and the third card is black if the cards are chosen with replacement, and if the cards are chosen without

    asked on July 14, 2014
  10. Chemistry Help! Thank you :)

    Assuming the final solution will be diluted to 1.00 , how much more should you add to achieve the desired pH? Information: Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.80. You have in front of you: 100 ml of

    asked on March 11, 2012
  11. Math - Please Help Me!

    How many ways can an IRS auditor select 3 of 11 tax returns for an audit? There are 8 members on a board of directors. If they must form a subcommittee of 3 members, how many different subcommittees are possible? License plates are made using 3 letters

    asked on December 5, 2009
  12. Chemistry

    Butyric acid (HC4H7O2) is a weak acid with the stench of rancid butter 1.) write the equation for the dissociation of HC4H7O2 in water 2.)the pH of .5 M HC4H7O2 is 2.56 calculate Ka of butyric acid 3.) Write the equation for the hydrolysis of C4H7O2- 4.)

    asked on July 30, 2013
  13. Spanish

    Can someone review my answers please 1. Alfredo dice que el viejo auto de Marisol todavía__ (ser/estar) seguro. Marisol piensa que quiere un auto nuevo pero no___ (ser/estar) segura. 2. Marta _____ (ser/estar) aburrida de pasar seis horas en la

    asked on November 12, 2013
  14. trig

    It is 4.7km from Lighthouse A to Port B. The bearing of the port from the lighthouse is N73E. A ship has sailed due west from the port and its bearing from the lighthouse is N31E. How far has the ship sailed from the port?

    asked on November 18, 2012
  15. Finance

    Solve the following problem by using the compound interest formula. The FernRod Motorcycle Company invested $260,000 at 3.5% compounded monthly to be used for the expansion of their manufacturing facilities. How much money will be available for the project

    asked on July 31, 2020
  16. Chemistry

    Consider the reaction 3Fe(s) + 4H2O(g) ¨ 4H2(g) + Fe3O4(s). If the volume of the container is reduced, 1. more Fe(s) is produced. 2. no change occurs. 3. more H2O(g) is produced. 4. more H2(g) is produced. 5. the equilibrium constant increases.

    asked on February 27, 2013
  17. Algebra

    Bill can mow the lawn in 2 hours, and his younger brother Tom can mow it in 3 hours. If both brothers mow the lawn together, how many hours will it take them? i got that i would take one hour and 12 minutes

    asked on September 23, 2017
  18. Chemistry 140A

    A gas cylinder containing 6.38 mol of neon has a pressure of 491 mm Hg at 295 K. If 3.22 mol of helium is added to this cylinder, at constant temperature and volume, what will be the pressure in the cylinder?

    asked on March 26, 2013
  19. Mathematics

    If I have cashews for 7.30 a pound an Brazil nuts for 5.40 a pound how much of each is used to make a 28 pound mixture for 6.28 a pound

    asked on August 1, 2020
  20. Physics

    A woman who weighs 500N stands on an 8.0-m-long board that weighs 100N. The board is supported at each end. The support force at the right end is 3 times the support force at the left end. How far from the right end is the woman standing?

    asked on June 8, 2010
  21. Business math - question help

    At the beginning of each year for 14 years, Sherry Kardell invested $400 that earns 10% annually. What is the future value of Sherry's account in 14 years? A. $14,000 B. $13,100 C. $12,309 D. $12,709 Answer: D? I've calculated several times and come out

    asked on April 11, 2016
  22. Spanish

    I need help to revise these sentences, thanks Form complete sentences using the verbs and nouns provided. Add any other necessary words. 1. María Elena / mostrar / fotos / a sus amigas 2.Martín y su hermano / empezar / lecciones de natación / martes 3.

    asked on October 29, 2013
  23. Math

    From a boat on the lake, the angle of elevation to the top of a cliff is 26°35'. If the base of the cliff is 85 feet from the boat, how high is the cliff (to the nearest foot)? A. 56 feet B. 43 feet C. 53 feet D. 46 feet I HAVE BEEN WORKING ON THIS

    asked on October 23, 2012
  24. Physics... URGENT !!!!

    A 66.7-kN car is travelling at 66.5 mph when the driver decides to exit the freeway by going up a ramp. After coasting 418 m along the exit ramp the car\'s speed is 28.9 mph, and it is h = 13.1 m above the freeway. What is the magnitude of the average drag

    asked on November 6, 2012
  25. chemistry

    Radio waves travel at the speed of light which is 3.00 x 108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 x 108 km from Earth?

    asked on September 12, 2010
  26. Trig

    Find the approximate value of cot θ​, given that csc θequals=3.5891420 and θ is in quadrant I.

    asked on January 26, 2017
  27. Chemistry

    I am completing my lab and cannot figure this out. I need someone to go over it and make sure I am right because I can't figure out why my empirical formula does not match the molecular formula. #7 is the one I am really having a problem with, but here is

    asked on July 28, 2010
  28. Physics

    A 0.280 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic

    asked on November 11, 2009
  29. Social Studies

    What effects did the arrival of Europeans have on native Americans? A the arrival had little effect on native Americans. B Conquest and disease brought by Europeans changed the native american way of life forever C Native Americans and newly arrived

    asked on December 1, 2015
  30. Chemestry

    Question 1) Consider the following reaction of calcium hydride (CaH2) with molten sodium metal:CaH2(s) + 2 Na(l) -> 2 NaH(s) + Ca(l) Identify the species being oxidized and the species being reduced? Question 2) Give the names to the binary compounds

    asked on July 27, 2015
  31. chemistry

    what is the most soluble salt of the following set? a) AgCN with Ksp=6.0 x 10^-17 b) Al(OH)3 with Ksp = 1.9x10^-33 c) Fe(OH)3 with Ksp = 2.6 x 10^-39 d) Sn(OH)2 with Ksp = 1.6 x 10^-19

    asked on December 4, 2012
  32. Chemistry

    Any help would be great on the below problems. I am not sure where to begin. How do I solve these? Do I use a formula? 1. You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe how you

    asked on August 17, 2010
  33. Math Word Problem

    How many ways can 8 people line up for play tickets?

    asked on December 5, 2009
  34. engineering

    evaluate each of the following and express with SI units having an appropriate prefix: (1) (50mN)(6GN) (2) (400mm) (0.6MN)^2 (3) 45 MN^3/900Gg

    asked on September 3, 2008
  35. Accounting

    Classify the following adjusting entries as involving prepaid expenses (PE), unearned revenues (UR), accrued expenses (AE), or accrued revenues (AR). a. To record revenue earned that was previously received as cash in advance. b. To record annual

    asked on July 26, 2009
  36. Physics

    A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28degrees above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively.

    asked on September 25, 2009
  37. Finance

    An office building is purchased with the following projected cash flows: -NOI is expected to be $180,000 in year 1 with 3 percent annual increases. -The purchase price of the property is $820,000. -100% equity financing is used to purchase the property

    asked on November 16, 2018
  38. Finance

    Sheryl’s Shipping had sales last year of $15,000. The cost of goods sold was $7,500, general and administrative expenses were $2,000, interest expenses were $1,500, and depreciation was $2,000. The firm’s tax rate is 30%. a. What are the earnings

    asked on February 4, 2013
  39. music

    hi um could you help me i have to do a music assignment and i to talk to my class about a piece of music from my fave artist like what instruments are used the structure of the music and those kinds of things but im not good at music and don't really

    asked on October 21, 2006
  40. Physics

    Two pellets, each with a charge of 1 microcoulomb, are located 3 cm apart. What is the electric force between them?

    asked on April 27, 2015
  41. spanish 102

    ¿Se peinaron las chicas antes de dormir? Sí, las chicas se peinaron antes de dormir. ¿Te cepillaste los dientes después de comer? ¿Se maquilla Julia antes de salir a bailar? ¿Se duchan ustedes antes de nadar en la piscina?

    asked on February 3, 2013
  42. thesis statement

    I need to come up with a good thesis statement for Amy Tan "Mother Tongue" and Gloria Anzaldua "how to tame a wild tongue". I have to do a point by point comparison essay & I can't really come up with a theses :( Help?!

    asked on January 24, 2012
  43. math

    patty has 123 cds in her music collection. of her cds 27 are country music. estimate the percent of patty's cds that are country music cds

    asked on January 5, 2011
  44. History

    How did the Gulf of Tonkin Resolution affect the Vietnam War? 1.The resolution established a demilitarized zone at the 17th parallel. 2.North Vietnamese leaders agreed to discuss ending the Vietnamese War. 3.The United States became fully engaged in

    asked on December 5, 2019
  45. Math

    S equals square root of 30 times D times f times n end root Where: S = speed in miles per hour 30 = a constant value used in the equation D = length of the skid marks in feet f = drag factor for the road surface n = braking efficiency as a percent If a

    asked on December 2, 2017
  46. Chemistry

    Consider the following thermochemical equation for the combustion of acetone (C3H6O), the main ingredient in nail polish remover: C3C6O + 4 O2 --> 3 CO2 + 3H2O DELTA Hrxm= -1790kJ If a bottle of nail polish remover contains 183 mL of acetone, how much heat

    asked on March 19, 2012
  47. Art Help plzs

    which word means to influence someone in a positive and exciting manner?

    asked on August 14, 2016
  48. Physics

    A fish tank has dimensions 46 cm wide by 1.0 m long by 0.70 m high. If the filter should process all the water in the tank once every 3.0 h, what should the flow speed be in the 3.0-cm-diameter input tube for the filter? I tried using Q=v/t and Q=vA...

    asked on December 6, 2015
  49. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe

    asked on November 9, 2012
  50. General Chemistry I

    Write the formation reactions. {You Must include the states of matter for each atom or compound} NaClO4(s)

    asked on October 31, 2012
  51. Physics Please Help ASAP

    Identify the unknown particles X and X' in the following nuclear reactions. (In parts (a) and (b), enter only the missing product or reactant.) A) X + 4over2 HE -> 24over12 Mg+1over0 n B) 235over92U+1over0 n -> 90over38Sr+X+2and 1over0 n

    asked on June 8, 2012
  52. chem

    Sulfuric acid can dissolve aluminum metal according to the following reaction. 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 26.8 g . 1.What minimum amount of H2SO4 in grams would you need? 2.How

    asked on April 14, 2017
  53. college chem

    A mixture contains H2 at 600 torr pressure, N2 at 200 torr pressure and O2 at 300 pressure. what is the total pressure of the gases in the system?

    asked on April 29, 2014
  54. chemistry

    Al2(SO4)3+6KOH-->2Al(OH)3+3K2SO4 a)How many grams of potassium hydroxide are needed to completely react with 870 mg of aluminum sulfate? b)If you want to make 7.00 grams of potassium sulfate, how many grams of aluminum sulfate would you need to react?

    asked on April 29, 2013
  55. Math

    In traveling across flat land, you notice a mountain in front of you. Its angle of elevation to the peak is 3.5 degrees. After you drive 13 miles closer to the mountain, the angle of elevation is 9 degrees. Approximate the height of the mountain.

    asked on November 22, 2010
  56. Physics!!! :)

    A student of mass 78 kg wants to walk beyond the edge of a cliff on a heavy beam of mass 180 kg and length 10 m. The beam is not attached to the cliff in any way, it simply lays on the horizontal surface of the clifftop, with one end sticking out beyond

    asked on January 5, 2010
  57. college chem

    A sample of methane gas CH4, occupies a volume (L) of 58.2 L at a pressure of 7.25 atm. What volume will the gas occupy if the pressure is lowered to 2.03 atm

    asked on April 29, 2014
  58. chemistry

    A 50.00-mL sample of groundwater is titrated with 0.0900 M EDTA. Assume that Ca2 accounts for all of the hardness in the groundwater. If 11.40 mL of EDTA is required to titrate the 50.00-mL sample, what is the hardness of the groundwater in molarity and in

    asked on April 4, 2013
  59. Calculus

    A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. The total volume of the solid is 2 cubic centimeters. Find the radius of the cylinder that produces the minimum surface area. (Round your answer to three decimal

    asked on November 7, 2012
  60. General Chemistry I

    When a 0.432g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with heat capacity of 3046 J/C, the temperature rises by 7.82C. How much energy (in KJ) is released during combustion. **I got that answered** 3046x7.82C=23819.72J

    asked on October 31, 2012
  61. Physics

    A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s, accelerates over a 7.00-s interval at a rate of 0.04 rad/s^2. What angular displacement does the Ferris wheel undergo in this 7-s interval?

    asked on June 8, 2010
  62. algebra

    Nancy can do a typing job in 8 hours. When Carole helps her, they can do the job together in 5 hours. How many hours would it take Carole to do the job alone? i got that carole can fo it in 13 hours and 20 minutes alone is this right?

    asked on September 23, 2017
  63. Chemistry

    Consider the following reaction: CO(g)+2H2(g)⇌CH3OH(g) Kp=2.26×104 at 25 ∘C. Calculate ΔGrxn for the reaction at 25 ∘C under each of the following conditions. A) Standard Conditions B) at equilibrium C)PCH3OH= 1.3atm ; PCO=PH2= 1.2×10−2atm

    asked on April 22, 2015
  64. Physics

    A soccer ball is kicked with a speed of 9.95m/s at an angle of 35.0∘ above the horizontal.If the ball lands at the same level from which it was kicked, how long was it in the air?

    asked on June 4, 2014
  65. Trig!

    a) The annual inflation rate is 3.5% per year. If a movie ticket costs $7.50, find a formula for p, the price of the tickets t years from today, assuming that movie tickets keep up with inflation. b) According to your formula, how much will movie tickets

    asked on January 15, 2013


    asked on September 6, 2009
  67. math

    Juanita Finn deposits $12,000 into an account at Valley Bank that pays 8% interest compounded quarterly. At the end of 5 years, how much will Juanita have in her account? Round to the nearest cent.

    asked on April 7, 2015
  68. math

    Compute the number of vinyl tiles, measuring 10 in. each side, needed to tile a kitchen measuring 20ft. by 16ft. _____tiles

    asked on October 23, 2012
  69. physics

    A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 25 N to stretch the bands 1.1 cm. a) What is the equivalent spring constant of the rubber bands? Answer in units of N/m b) How much force is required to pull

    asked on February 16, 2012
  70. physics

    A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 12 m/s, skates by with the puck. After 2.0 s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 4.0

    asked on September 15, 2011
  71. math

    It takes one machine 25 minutes to pick a bale of cotton and another machine 30 minutes to compete the same job. If both machines are used, how long will it take them to pick a bale of cotton?

    asked on October 22, 2017
  72. Elementary education

    A napkin ring is being made of cast silver. It has the shape of a cylinder 1.25 inches high, with a cylindrical hole 2 inch in diameter and a thickness of 1/16 inch. How many ounces of silver are needed? [silver weighs 6 ounces per cubic inch]

    asked on April 8, 2016
  73. Chemistry

    Consider the following reaction: 2NO(g)+O2(g)→2NO2(g) Estimate ΔG∘ for this reaction at each of the following temperatures and predict whether or not the reaction will be spontaneous. (Assume that ΔH∘ and ΔS∘ do not change too much within the

    asked on April 22, 2015
  74. Calculus

    Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi^2/hr. How rapidly is radius of the spill increasing when the area is 8 mi^2? I tried using A=(pi)r^2 and dA/dt=2(pi)r(dr/dt) and plugging in

    asked on April 10, 2015
  75. 7th grade math

    For questions 1, 2 identify each sentence as arithmetic, geometric both or neither. 1) 7, 9, 11, 13 ...... A) arithmetic B) geometric C) both D) neither (my answer) 2) 2, 1, 1/2, 1/4, .... A) arithmetic B) geometric C) both (my answer) D) neither

    asked on March 18, 2015
  76. reading

    From this paragraph, what relationship can you infer between the jogger and the writer? A. The writer is observing a typical jogger. B. The writer is in danger from the jogger. C. They are complete strangers to each other. D. They are well known to each

    asked on November 20, 2014
  77. statistics and probability

    A company manufactures washers, about 5% of which are defective. If a random sample of 100 washers are inspected, what is the probability that fewer than 4 are defective?

    asked on November 2, 2014
  78. Pre Cal

    find the surface area of a box of hieght h whose base dimensions are p and q, and that satisfies either one of the following conditions: a) the box is closed. b) the box has an open top. c) the box has an open top and a square base.

    asked on July 24, 2011
  79. Accounting 100

    Who can be harmed when a company changes its accounting methods too often?

    asked on May 26, 2011
  80. math

    One printing press can print 5,000 advertising cards in 12 seconds. Another printing press can print the same number of cards in 7 1 2 seconds. If both presses are used together to print the 5,000 cards, how many seconds will it take them? same with this

    asked on September 27, 2017
  81. physics

    As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. You find a campground that is near an outcropping of ice from one of the glaciers. Part of the ice outcropping forms a 55.5° slope up to

    asked on September 26, 2017
  82. Chemistry

    Write the net ionic equation for the precipitation of zinc carbonate from aqueous solution:

    asked on July 3, 2017
  83. Math

    Consider the graph of the parabola ​f(x)equals=x squaredx2. For xgreater than>0 and hgreater than>​0, the secant line through​ (x,f(x)) and ​(xplus+​h,f(x+h)) always has a greater slope than the tangent line at​ (x,f(x)). Choose the correct

    asked on September 10, 2016
  84. Statistics

    Astronomers treat the number of stars in a given volume of space as a Poisson random variable. The density in the Milky Way Galaxy in the vicinity of our solar system is one star per 16 cubic light years. (a) What is the probability of three or more stars

    asked on February 20, 2014
  85. artist

    Is it possible for a band or artist to make topical or political commentary in a song today while focusing on turning a profit?

    asked on March 14, 2013
  86. Chemistry

    How much heat energy, in kilojoules, is required to convert 36.0g of ice at 18.0C to water at 25.0C

    asked on January 30, 2013
  87. Calculus

    A 30-in. piece of string is cut into two pieces. One piece is used to form a circle and the other to form a square. How shouls the string be cut so that the sum of the areas is a minimum? Round to the nearest tenth, if necessary.

    asked on June 11, 2008
  88. algebra

    If v1,...,v4 are in R^4 and v3 is not a linear combination of v1, v2, v4 then {v1, v2, v3, v4] is linearly independent. Is this true or false? Why? If v1,...,v4 are in R^4 and v3 is not a linear combination of v1, v2, v4 then {v1, v2, v3, v4] is linearly

    asked on May 20, 2007
  89. Social Studies

    Were those who wanted the cherokees' land influenced by the fact that the cherokee signers the 1835 treaty had acted illegally?

    asked on September 24, 2017
  90. Algebra

    One pump can fill a reservoir in 60 hours. Another pump can fill the same reservoir in 80 hours. A third pump can empty the reservoir in 90 hours. If all three pumps are operating at the same time, how long will it take to fill the reservoir? i got 55.38

    asked on September 23, 2017
  91. Math

    A 6-inch pizza costs $3.50. A 12-inch pizza costs $11. How much less is the area of the 6-inch pizza than the area of the 12-inch pizza? Express your answer to the nearest hundreth.

    asked on April 20, 2016
  92. MATH!!!

    Al saves pennies. He agreed to give 5/11 of his pennies to bev . If she would give 5/11 of what she got from al to carl and in return if he would give 5/11 of what he got from bev to danni, carl and agreed and danni recived 750 pennies . How many pennies

    asked on November 19, 2014
  93. Chemistry

    What is the complete ionic equation for NaOH(aq) + Fe(NO3)3(aq)? I'm putting this on webassign, but it's telling me "One or more of your reactants appear to have an improper oxidation state. One or more of your products contains an improper oxidation

    asked on June 21, 2013
  94. physics!

    Late one night on a highway, a car speeds by you and fades into the distance. Under these conditions the pupils of your eyes have diameters of about 7.0 mm. The taillights of this car are separated by a distance of 1.2 m and emit red light (wavelength =

    asked on May 7, 2013
  95. Chemistry

    The resolution limit of a microscope is roughly equal to the wavelength of light used in producing the image. Electron microscopes use an electron beam (in place of photons) to produce much higher resolution images, about 0.16 nm in modern instruments.

    asked on March 30, 2012
  96. chemistry

    Is citric acid covalent or ionic?

    asked on January 19, 2009
  97. Mathematics

    The second and fifth terms of a geometric progression (g.p) are 1 and 8 respectively. Find the common ratio,first term, and the eight term.

    asked on August 12, 2017
  98. math

    Jose is wrapping a stack of 100 coins in a paper holder. Each coin is 18 inch thick and has a diameter of 1 inch. How many square inches of paper will Jose need to cover the stack of coins? Use 3.14 for π. Enter your answer in the box.

    asked on May 26, 2017
  99. Math

    Estimate f(5.9) given that f(6)=5 and f′(6)=3.

    asked on October 23, 2016
  100. Statistics

    In advance of the 1936 Presidential Elections, a magazine titled Literary Digest released the results of an opinion poll predicting that the republican candidate Alf Landon would win by a large margin. The magazine send post cards to approximately

    asked on August 28, 2015


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