Most popular questions and responses by james
  1. math 8th

    1. The following circle graph was published in the Cane County annual report. If there are 1,000 registered voters in Cane County, how many are 35–45 years old? circle graph (1 point) 150 voters

    asked on March 20, 2014
  2. Physics

    A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart’s velocity after a 6.0-newton westward force acts on it for 2.0 seconds? (1) 2.0 m/s east (3)

    asked on January 3, 2008
  3. algebra

    Which box-and-whisker plot shows the scores of ten students on a mathematics exam? 92, 76, 83, 97, 74, 81, 92, 91, 96, 87 (1 point) box and whisker plot box and whisker plot box and whisker plot box and whisker plot

    asked on March 31, 2014
  4. Physics

    A snowmobile moves according to the velocity-time graph shown in the drawing. What is the snowmobile's average acceleration during each of the segments A, B, and C? The scale for the time axis is 60 s per increment, and the scale for the velocity axis is

    asked on May 29, 2013
  5. science

    Tow masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other?

    asked on December 13, 2015
  6. math

    Which of the following statements is always true of similar polygons

    asked on December 9, 2013
  7. Science, Physics, math, calculus

    Pool players often pride themselves on their ability to impart a large speed on a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening

    asked on November 24, 2013
  8. Science/ Chemistry

    When 0.422 g of phosphorus is burned, 0.967 g of a white oxide (a compound of phosphorus and oxygen) is obtained. a. Determine the empirical formula of the oxide. So for the empirical Formula I got P_2O_5 now it wants me to Write a balanced equation for

    asked on September 22, 2013
  9. calculus

    Consider the given function and the given interval. f(x) = 4 sin x − 2 sin 2x, [0, π] (a) Find the average value fave of f on the given interval. fave = (b) Find c such that fave = f(c). (Round your answers to three decimal places.) c = (smaller value)

    asked on February 11, 2013
  10. Chemistry (buffers)

    Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M acetic acid. a. What would be the initial pH of Buffer C? HOW???????

    asked on March 15, 2012
  11. history

    Which was a contributing factor in President Truman’s decision to drop the atomic bomb? The president needed to experiment with the impact of atomic weapons on a military target. The president wanted to display the might of the United States military to

    asked on August 14, 2018
  12. Calculus

    I really need help with this problem an automobile accelerates from rest at 1 + 3(square root)t mph/sec for 9 seconds. How far does it travel in those nine seconds? I have found that the velocity, after nine seconds, is 63 I have figuredout the answer but

    asked on April 1, 2007
  13. science

    . A runner jumps over a hurdle. Neglecting friction, the potential energy of the runner at the highest point compared to his kinetic energy at the lowest point is

    asked on March 19, 2017
  14. History

    What was the purpose of the documentary film The Eternal Jew? to dispel myths of Jewish inferiority and notions of German superiority to educate Nazi officers about Hitler’s plan to exterminate Jews to convince Jews to voluntarily migrate out of Europe

    asked on August 14, 2018
  15. english

    9. Identify the sentence that contains an error in punctuation or capitalization. Perry asked if anyone knew the words to "Locked Out." "Wasn't that in the movie Reality Bites," asked Grace? Garrison yelled from the other room, "I loved that movie!" "In

    asked on April 29, 2013
  16. Calculus

    Write the integral in one variable to find the volume of the solid obtained by rotating the first-quadrant region bounded by y = 0.5x^2 and y = x about the line x = 5.

    asked on May 16, 2018
  17. Physics

    particle A moves along the line y = 30m with a constant velocity of magnitude 3.5 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with 0 initial speed and constant acceleration of magnitude 0.50

    asked on September 30, 2012
  18. world history

    Which identifies an argument that the Nazis used to claim that the Weimar government was weak? The Weimar government refused to pay any of its war reparations. The Weimar government followed a democratic process to govern. The Weimar government formed a

    asked on August 7, 2018
  19. chemistry

    What would the final freezing point of water be if 3 mol of sugar were added to 1 kg of water (Kf = 1.86C/(mol/kg) for water and i = 1 for sugar)?

    asked on April 11, 2012
  20. Physics

    An electron with speed 2.35×107m/s is traveling parallel to a uniform electric field of magnitude 1.16×104N/C . How far will the electron travel before it stops? A=0.135m How much time will elapse before it returns to its starting point? I solved for the

    asked on February 16, 2014
  21. Chemistry

    What is the maximum mass of S8 that can be produced by combining 85.0 g of each reactant? 8SO2 + 16H2S yields 3S8 +16H2O

    asked on September 21, 2013
  22. history

    How did Otto von Bismarck help to bring about German unification? He convinced the Austrian emperor to form a pan-German military alliance. He became a strong influence on the king and encouraged the buildup of the military. As minister president, he

    asked on August 9, 2018
  23. Calculus

    1) A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t) = (t)In(2t). Find the acceleration of the particle when the velocity is first zero. 2) The driver of a car traveling at 50 ft/sec suddenly applies the brakes. The

    asked on October 2, 2017
  24. English

    7. Identify the sentence that contains a word or phrase that should not be in italics. *Is Mel Gibson in the movie version of Hamlet or Macbeth? Lenny has trouble pronouncing the word bonjour. Glenda subscribes to Smithsonian and Time magazines. Thornton

    asked on April 29, 2013
  25. math

    Joe is playing a game with a regular die. if the number that turns up is even he will gain 5 times the number that comes up. if it is odd, he will lose 10 times the number that comes up. he tosses a 3. express the results as an integer

    asked on October 4, 2016
  26. Chemistry

    What is the Lewis dot structure for LiF? Is it Li - F with 2 dots on each side of F?

    asked on April 2, 2009
  27. Chem

    A 25.0 mL aliquot of a well-shaken and filtered sample of river is pipetted into an evaporating dish. The sample was heated to dryness. Assume the density of the river water was 1.01g/mL. The following data were collected for Trial 1. Complete the data.

    asked on September 14, 2015
  28. Math

    Kate cycles the first 350 km of a 470 km journey at a certain average speed and the remaining distance at an average speed that is 15 km/h less than that for the first part of the journey. If the time taken for her to travel each part of her journey is the

    asked on November 2, 2016
  29. Geometry

    46. Assume that lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x. Figures are not drawn to scale. mO = 128° (1 point) 52 308 64 256

    asked on June 10, 2013
  30. english

    8. Identify the sentence that contains an error in punctuation or capitalization. "After you’ve rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won’t take very long."

    asked on April 29, 2013
  31. physics

    Two forces act on an object. The first force has a magnitude of 17.0 N and is oriented 68.0° counter-clockwise from the x axis, while the 2nd force has x- and y-components (-19.0 N, 16.5 N). Express the magnitude and direction of the net force.

    asked on November 14, 2013
  32. Physics

    The diameter of the base of a tapered drinking cup is 6.6cm . The diameter of its mouth is 9.8cm . The path of the cup curves when you roll it on the top of a table. How much faster does the mouth move than the base? Express your answer using two

    asked on March 20, 2014
  33. Physics

    To better understand the concept of static equilibrium a laboratory procedure asks the student to make a calculation before performing the experiment. The apparatus consists of a round level table in the center of which is a massless ring held in place

    asked on November 14, 2013
  34. Physics

    A 56.5kg, 2.4m uniform ladder leans against a frictionless wall. A 95.5kg person is standing up 0.8m from the bottom of the ladder. The ladder makes an angle of 57 degrees with the horizontal. The coefficient of static friction between th eladder and the

    asked on December 14, 2015
  35. finance

    A firm has beginning inventory of 300 units at a cost of $11 each. Production during the period was 650 units at $12 each. If sales were 700 units, what is the value of the ending inventory using LIFO? Note: LIFO, last-in, first-out represents that the

    asked on February 8, 2011
  36. statistics

    The customer bills in a family restaurant are normally distributed. The bills mean is $28 and has a standard deviation of $6. a. Identify what the random variable you are measuring is in this problem. b. What is the probability that a randomly selected

    asked on June 22, 2013
  37. Physics

    Starting from rest, a skier slides 100 m down a 28 degree slope.How much longer does the run take if the coefficient of kinetic friction is 0.17 instead of 0?

    asked on May 27, 2013
  38. Organic chemistry

    A diels-Alder reaction of cyclopentadiene with Maleic Anhydride experiment was conducted in lab. But I was wondering why we added ligroin to the maleic anhydride and ethyl acetate. I know ligroin can be used as a solvent and it is also nonpolar, though

    asked on February 6, 2013
  39. Chem

    How many oxygen atoms are in 5.23 g of C6H12O6

    asked on June 2, 2011
  40. College Chem I

    Based on the types of bonding in the following compunds, explain why you would expect: 1) calcium chloride (CaCl2) to be soluble in water 2) Ethane (CH3CH3) to be insoluble in water

    asked on May 2, 2011
  41. geometry

    The Frostburg-Truth bus travels on a straight road from Frostburg Mall to Sojourner Truth Park. The mall is 2 miles east and 5 miles north of the City Center. The park is 5 miles west and 5 miles south of the Center. How far is it from the mall to the park

    asked on August 29, 2018
  42. History

    1. A decline in the number of U.S. manufacturing jobs was in part the result of *globalization. biotechnology. entrepreneurs. superstations. 2. The first modern computer was designed to benefit universities. the economy. *the military. corporations. 3.

    asked on April 26, 2013
  43. English

    Identify the incorrect sentence. A. There is a good variety of mugs in the cabinet. B. There are a good variety of mugs in the cabinet. C. A number of glasses have been broken. D. The number of broken glasses has increased.

    asked on October 15, 2015
  44. History

    4. Which of the following influenced the presidential election of 1980? high inflation low gas prices racial tensions *a war with Iraq Thank You.

    asked on April 18, 2013
  45. statistics

    The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound-shaped and symmetric with a mean of 24.6 mpg and a standard deviation of 11.2 mpg. If 30 such cars are tested, what is the probability the average

    asked on May 5, 2013
  46. eng9

    The White House has been home to many animals as well as presidents. (1 point) common noun proper noun compound noun collective noun

    asked on August 24, 2014
  47. physical health education

    what are the branches of health education

    asked on January 29, 2019
  48. math

    6. Solve by factoring. m² + 8m + 7 = 0 (1 point)8, 7 –7, 1 *–7, –1 7, 1 7. Solve by factoring. n² + 2n – 24 = 0 (1 point)–12, 2 –2, 12 *–6, 4 –4, 6 Please Help

    asked on February 26, 2013
  49. Mathematics

    A shopkeeper mixed coffee powder worth $2.50 per kg with coffee powder worth $3.50 per kg, and sold 20 kg of the mixture at $2.80 per kg. Find the weights of the 2 grades of coffee powder that he mixed together. Explain clearly your steps of solving it.

    asked on January 15, 2012
  50. finance

    Oppenheimer Bank is offering a 30-year mortgage with an EAR of 5 3/8%. If you plan to borrow $150,000, what will your monthly payment be?

    asked on July 12, 2010
  51. English

    Identify the correct sentence. A. A giant spider with long legs are crawling on the wall in the living room. B. A giant spider with long legs is crawling on the wall in the living room. C. Neither the roach nor the spider are still alive. D. Neither the

    asked on October 15, 2015

    A man has $210,000 invested in three properties. One earns 12%, one 10% and one 8%. His annual income from the properties is $20,100 and the amount invested at 8% is twice that invested at 12%. How much is invested in each property? at 12% 10% and 8% What

    asked on November 30, 2014
  53. Chemistry

    Calculate Delta H for the reaction CH4(g)+NH3(g)-->HCN(g)+3H2(g) given, N2(g)+3H2(g)->2NH3(g) DeltaH=-91.8kj C(s)+2H2(g)->CH3(g) DeltaH=-74.9kj h2(g)+2C(s)+N2(g)->2HCN(g) DeltaH=270.3kj

    asked on October 11, 2015
  54. geometry

    From an apartment window 24 m above the ground, the angle of depression of the base of a nearby building is 38 degrees and the angle of elevation is of the top is 63 degrees. How tall is the nearby building?

    asked on January 5, 2015
  55. Comp.

    Could anyone help me Please.. about the uses of the computer on the following fields. 1.Business 2.Arts and Films 3.Music 4.Engineering 5.Manufacturing 6.Police and Laws Enforces 7.Medicine 8.Education 9.Science and Research 10.Archeology Thanks :-)

    asked on June 24, 2007
  56. Physics

    You are on vacation in San Francisco and decide to take a cable car to see the city. A 5500 kg cable car goes 360 m up a hill inclined 19 ∘ above the horizontal. What can your learn about the work done by the cable to move car up the hill? Answer

    asked on February 29, 2016
  57. Physics

    A Knight of the Round Table fires off a vat of burning pitch from his catapult at 17 m/s, at 29 ◦ above the horizontal. The acceleration of gravity is 9.8 m/s 2 . How long is it in the air? Answer in units of s

    asked on December 19, 2012
  58. math

    Ms. Coleman's class has already collected 403 cans for a food drive, but the class wants to collect a total of at least 1,000 cans. If each of the 28 students in the class brings an equal number of cans, how many more cans should each student bring for the

    asked on December 9, 2018
  59. College Chemistry

    The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf

    asked on October 19, 2010
  60. chemistry

    How many grams of na3po4 will be needed to produce 425ml of a solution that has a concentration of na+ ions of 1.30 M?

    asked on September 11, 2010
  61. Math

    Logan drew Δ ABC on the coordinate plane, and then reflected the triangle over the y-axis to form Δ A'B'C'. Which statement is not true about these two triangles? A.Δ ABC≅Δ A'B'C' B. The two triangles have the same angle measures. C. The vertices of

    asked on September 9, 2019
  62. Chemistry

    A woman expends 96 kJ of energy in walking a kilometer. The energy is supplied by the metabolic breakdown of food intake and has a 35 % efficiency. If the woman drives a car over the same distance, how much energy is used if the car gets 8.7 km per liter

    asked on March 27, 2015
  63. english

    11. All of the guests at the party partook in libations of all sorts to honor the hostess of the party. a meal of several courses *the pouring of drink as an act of respect the sharing of kind words when in a large group a form of gift giving that pays

    asked on April 29, 2013
  64. math

    A bacteria population is currently exactly one million and increasing at a linear rate of 15 per second. What will the population be in two weeks?

    asked on December 29, 2012
  65. Physics

    Two meteoroids 250,000 km from Earth are moving at 2.1 km/s. Meteor one is headed in a straight path for Earth, while meteor two is on a path that will come within 8500 km from the Earth's center. (A) What is the speed of the first meteroid when it strikes

    asked on March 19, 2009
  66. Physics

    An ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. The tension in the string is T Write the equation for centripetal force, and substitute the values T and L appropriately. Then with a bit

    asked on March 20, 2014
  67. Physics

    Stuck in the middle of a frozen pond with only your physics book, you decide to put physics in action and throw the 9-kg book. If your mass is 45 kg and you throw the book at 10 m/s, how fast do you then slide across the ice? (Assume the absence of

    asked on June 5, 2012
  68. math 8th

    Find the circumference of the given circle. Round to the nearest tenth. circle (1 point) 22.0 cm 38.5 cm 11.0 cm 42.8 cm

    asked on April 18, 2014
  69. Chemistry

    A sample of impure magnesium was analyzed by allowing it to react with excess HCl solution: Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) After 1.27 g of the impure metal was treated with 0.100 L of 0.768 M HCl, 0.0125 mol HCl remained. Assuming the impurities

    asked on September 22, 2013
  70. physics

    at 25.0m below the surface of the sea (density=1.025kg/m^3), where the temperature is 5.00C, a diver exhales an air bubble having a volume of 1.00cm^3. If the surface temperature of the sea is 20.0C, what is the volume of the bubble just before it breaks

    asked on December 3, 2009
  71. chemistry

    phsophorous trichloride and phosphorous pentachloride equilibrate in the presence of molecular chlorine according to PCl3 (g) +Cl2 (g)->PCl5 (g) Kc = 2.01 at 500k If a 1.000L reaction vessel is charged with .300 mol of PCl5(g) and allowed to equilibrate at

    asked on October 1, 2015
  72. calc 2

    A loaf of bread is removed from an oven at 350 degrees F and cooled in a room whose temperature is 70 degrees F. If the bread cools to 210 degrees F in 20 minutes, how much longer will it take the bread to cool to 155 degrees F. Round to the nearest

    asked on September 29, 2015
  73. College Physics

    Illinois Jones is being pulled from a snake pit with a rope that breaks if the tension in it exceeds 755 . If Illinois Jones has a mass of 70.0 and the snake pit is 3.90 deep, what is the minimum time that is required to pull our intrepid explorer from the

    asked on September 23, 2009
  74. Finance

    A grocery store manager must decide whether to buy four rug cleaners to rent to customers. The manager estimates that the first would yield $200 a year, the second $150, the third $75, and the fourth $20. If the interest rate is 12 percent and each rug

    asked on April 12, 2012
  75. Chemistry

    Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54e-5), with 0.1000 M NaOH solution after the following additions of titrant: 0 mL, 14.00 mL, 19.95 mL, 20.00 mL, 20.05 mL, 24.00 mL.

    asked on November 23, 2011
  76. business finance

    Hot Wings, Inc., has an odd dividend policy. The company has just paid a dividend of $11.25 per share and has announced that it will increase the dividend by $9.25 per share for each of the next four years, and then never pay another dividend. Required: If

    asked on June 25, 2012
  77. Physics

    A Plane flies north at 215 km/h. A wind from the east blows at 69km/h. What is the plane's new velocity with respect to the ground in standard position

    asked on March 19, 2014
  78. chemistry

    what is the pressure exerted by a 0.500 mol sample of nitrogen in a 10.0 L container at 20 degrees C?

    asked on April 8, 2010
  79. Science

    Which of the following means using specific observations to make generalizations? A: BIAS B: Subjective C: Deductive Reasoning D: Inductive resoning is the answer c?

    asked on September 12, 2016
  80. English

    8. Identify the sentence that contains an error in punctuation or capitalization. "After you’ve rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won’t take very long."

    asked on April 29, 2013
  81. Physics

    A 492g oscillator has a speed of 99.5 cm/s when its displacement is 3.60 cm and 72.5 cm/s when its displacement is 5.10 cm. What is the oscillator's maximum speed? I'm suck with this problem, can someone please go through it with me step by step, please

    asked on January 8, 2013
  82. chemistry

    The solubility of barium nitrate at 100°C is 34 g/100 g of H2O and at 0°C is 5.0 g/100g of H2O. If you start with 100 g of Ba(NO3)2 and make a saturated solution in water at 100°C, how much water is required? If the saturated solution is cooled to 0°C,

    asked on October 29, 2010
  83. ap calc

    a particle moves along the x-axis so that its velocity at any time t is equal to or > 0 is given by v(t)= (2pie-5)t-sin(piet) a.find the acceleration at any time t. b.find the minimum acceleration of the particle over the interval [0,3] c.find the maximum

    asked on February 17, 2013
  84. Physics

    You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.8 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the

    asked on September 16, 2015
  85. science

    A 2000kg car traveling at a speed of 27m/s skids to a halt on wet concrete where μk = 0.20.

    asked on November 17, 2014
  86. Chemistry

    An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound gives mass percents of 31.57% Carbon and 5.30% H. The molar mass is determined by measuring the freezing-point depression of an aqueous solution. A freezing

    asked on February 24, 2015
  87. physics

    If the magnitude of the electric field in air exceeds roughly 3 106 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 49 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without

    asked on February 10, 2012
  88. Science, Physics, math, calculus

    You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. You fire the arrow at 35.0 m/s oriented 30.0° above the horizontal from a height of 1.30 m while standing 47.0 m away on your first

    asked on November 24, 2013
  89. aadvanced functions HELP!

    the population of a town is decreasing at a rate of 1.8% per year. The current population of the own in 12000. a)write and equation that models the population of the town b)how long will it take for the population to decline to one quarter of its current

    asked on December 10, 2008
  90. Algebra

    Keiko is a software saleswoman. Let represent her total pay (in dollars). Let represent the number of copies of History is Fun she sells. Suppose that and are related by the equation . Answer the questions below. Note that a change can be an increase or a

    asked on March 27, 2014
  91. chemistry

    The equilibrium constant (Kc) for the gas phase reaction 2 NH3 N2 + 3 H2 is 3.0 x 10-3 at some temperature. The reaction is started by placing a 0.040-mol sample of ammonia in an empty one-liter flask. When equilibrium is established how much N2 is

    asked on October 25, 2009
  92. Physics

    What is the velocity at the midway point of a ball able to reach a height y when thrown with an initial velocity v0? (Assume the ball is thrown upward and that up is the positive direction. Use the following as necessary: y and g. ) Someone posted this

    asked on May 18, 2012

    A bank account is growing by 4.3 % per year. Find the doubling time. Round your answer to the nearest integer. Can someone explain how to solve this step by step. I have been stuck on this for quite a while

    asked on October 3, 2014
  94. Physics (Oscillation)

    If a particle moves in simple harmonic motion with a frequency of 3.00 Hz and an amplitude of 5.00 cm through what total distance does the particle move during one cycle of its motion, what is its maximum speed, where does this maximum speed occur and what

    asked on September 8, 2010
  95. physics

    A bullet is fired in a horizontal direction with a muzzle velocity of 300m/s.in the absence of air resistance,how far will it have droppped in travelling a horizontal distance of 20m.

    asked on August 20, 2013
  96. Physics

    The New England Merchants Bank Building in Boston is 152 high. On windy days it sways with a frequency of 0.12 , and the acceleration of the top of the building can reach 2.5 of the free-fall acceleration, enough to cause discomfort for occupants. What is

    asked on January 8, 2013
  97. Physics

    A bag is dropped from a hovering helicopter. The bag has fallen for 2.0 s. What is the bag's velocity? How far has it fallen?

    asked on September 2, 2008
  98. Chemistry

    A solution contains 3.75g of nonvolatile pure hydrocarbon in 95g acetone. The boiling points of pure acetone and the solution are 55.95C and 56.50C, respectively. The molal boiling point constant of acetone is 1.71 C*kg/mol. What is the molar mass of the

    asked on February 10, 2011
  99. physics

    A horse pulls a cart with a force of 40lb at an angle of 30 degrees above the horizontal and moves along at a speed of 6mi/hr. A) how much work does the force do in 10 min? B) What is the average power (in horsepower) of the force?

    asked on July 18, 2010
  100. Math

    Translate the following sentence into math symbols. Then solve the problem. y more than 4 is -36 My answer: 4 + y = =36 y = -40? Did I answer both of the questions right?

    asked on September 14, 2015


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