Most popular questions and responses by Sherry
  1. statistics

    The probability that a house is burglarized in the city is 5%. If 50 houses are randomly selected, what is the probability that none will be burglarized?

    asked on July 14, 2012
  2. math

    A boy of height 95 cm is walking away from base of a lamp post at a speed of 1.5 m/s.If the lamp post is 3.8 m above the ground, find the length of his shadow after 5 seconds.

    asked on September 25, 2014
  3. physics

    A 25.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 31.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the

    asked on February 27, 2016
  4. physics

    An older-model car accelerates from 0 to speed v in 10. s. A newer, more powerful sports car of the same mass accelerates from 0 to 4v in the same time period. Assuming the energy coming from the engine appears only as kinetic energy of the cars, compare

    asked on March 3, 2016
  5. physics

    A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is

    asked on February 27, 2016
  6. physics

    A 56.0-kg runner has a speed of 3.10 m/s at one instant during a long-distance event. (a) What is the runner's kinetic energy at this instant? KEi = J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? KEf

    asked on February 27, 2016
  7. 10th grade

    calculate the mass of the water of hydration if a hydrate loses 0.025 mol of H2O when heated

    asked on November 2, 2010
  8. math

    A loan has a due date of December 20. If it is made on September 19, for how many days is the loan?

    asked on July 1, 2014
  9. math

    Fritz benjamin buys a car costing $12300. He agrees to make payment at the end of each month period for 8 years. He pays 7.2% interest compounded monthly. what is the amount of each payment? find the total amount of interest fritz will pay?

    asked on April 15, 2012
  10. physics

    A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is

    asked on March 2, 2016
  11. Chemistry

    A 11.0g sample of a compound containing only oxygen and carbon produce 3.0g carbon and 8.0g oxygen. Determine the empirical formula of the compound.

    asked on March 8, 2015
  12. physics

    At an accident scene on a level road, investigators measure a car's skid mark to be 78 m long.It was a rainy day and the coefficient of friction was estimated to be 0.38. Use these data to determine the speed of the car when the driver slammed on (and

    asked on November 20, 2009
  13. physics

    An archer pulls her bowstring back 0.420 m by exerting a force that increases uniformly from zero to 240 N. (a) What is the equivalent spring constant of the bow? N/m (b) How much work does the archer do in pulling the bow? J

    asked on March 3, 2016
  14. statistics

    Chicken Delight claims that 91 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 70 orders revealed that 60 were delivered within the promised time. At the .02 significance level, can we conclude that less

    asked on November 21, 2011
  15. physics

    2.A hiker used a compass to orient himself as he walked 3.00 km in a direction 50.0° north of west, and then an additional 2.00 km in a direction 20.0° south of west. The trip took 1.25 hours. Calculate the magnitude and direction of the hiker’s

    asked on July 4, 2017
  16. Chem

    1a) Calculate the molar concentration of the KIO3 solution provided. KIO3 2.15g/L we used 10 mL in the experiment.

    asked on October 7, 2016
  17. science

    A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0m/s2. If the cart has a beginning speed of 2.0m/s what is its final speed?

    asked on March 10, 2014
  18. biochem

    4)You are informed that a compound secreted from a frog found in the Amazon basin has been showed to inhibit ATP synthesis. Without knowledge of specific details could you speculate on potential mechanisms through which this discovered compound be

    asked on July 14, 2017
  19. Intermediate Algebra

    convert to scientific notation....0.00024

    asked on March 30, 2012
  20. math

    why can't you just answer the quesstion?

    asked on February 3, 2019
  21. science

    WHat branches of science fall under the environmental science umbrella? Go to Wikepedia...very good article on environmental science...they list sub-categories. Depending upon what is being investigated, there are many; such as chemistry, biology,

    asked on September 3, 2006
  22. physics

    A 0.290-kg block along a horizontal track has a speed of 1.30 m/s immediately before colliding with a light spring of force constant 53.4 N/m located at the end of the track. (a) What is the spring's maximum compression if the track is frictionless? m

    asked on March 3, 2016
  23. cups of milk

    A recipe calls for 2 3/4 cups of milk. How many cups of milk, written as a fraction greater than one, are used in the recipe

    asked on February 4, 2014
  24. Science

    The solubility of CO2 in water at 25 degree celsis and 1 atm is 0.034 mol/L . what is the solubility under atmospheric condition? Assume that CO obeys henry's law. ( the partial pressure of CO2 in air is 0.0003 ATM

    asked on June 11, 2019
  25. chemistry

    A sample of oil has a mass of 65g and a volume of 80.0 mL. What is the density?

    asked on October 4, 2012
  26. Physics

    A balloonist, riding in the basket of a hot air balloon that is rising vertically with a constant velocity of 9.5 m/s, releases a sandbag when the balloon is 44.3 m above the ground. Neglecting air resistance, what is the bag's speed when it hits the

    asked on September 4, 2012
  27. Algebra 1

    A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball

    asked on March 7, 2013
  28. english grade 12

    in the poem grammar poem by Rita Wong list three different metaphors used to describe english and english grammar. do you agree with her assesment and why

    asked on November 14, 2009
  29. brain teaser help

    The new science teacher claims he can place a beaker in the middle of the science lab and crawl into it. How? Does anyone get this or hav an idea? haha I think it was a metaphor or some joke or something :P, just to get you insterested. Because you did say

    asked on August 20, 2005
  30. biochem

    1)“Gluconeogenesis uses available energy and is therefore an energetically expensive process” why is gluconeogenesis necessary and under what conditions does it occur? What regulatory mechanisms ensure that glycolysis does not occur simultaneously with

    asked on July 14, 2017
  31. Finance

    annual net cost Monthly fee $4, check processing fee of 20 cents, average 23 checks written per month. annual interest of 1.5 percent paid if balance exceeds $750, $8 monthly fee if account falls below minimum balance, average monthly balance $815, account

    asked on June 5, 2016
  32. physics

    A uniform ladder, 3 m long and weighing 130 N, placed against a smooth wall, its lower end being 1.80 m from the wall. A 700N man stands on the upper most rung of the ladder located 0.45 m from the upper end of the ladder. a.) What are the vertical and

    asked on September 17, 2014
  33. Intermediate Algebra

    Solve using the elimination method.Show work.If system has no solution state this or infinite solution 8x+10y=-34 16x-5y=-43

    asked on March 27, 2012
  34. Microeconomics

    1. Complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data), either as a Microsoft Excel spreadsheet, or as a Microsoft Word table. Assume that the price is $165 and the fixed costs are $125, at an output level of 1. Also assume that the data

    asked on December 6, 2012
  35. physics

    A daredevil on a motorcycle leaves the end of a ramp with a speed of 30.5 m/s as in the figure below. If his speed is 29.0 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. m

    asked on February 27, 2016
  36. physics

    An elevator and rider have a mass of 1600 kg combined. What is the tension force in the cable lifting them at a steady speed of 3 m/s? Assume no friction.

    asked on February 12, 2014
  37. math

    A draw contains 3 black socks and 2 white socks. A sock isdrawn at random and then replaced. Find each probability. p(2 black) p(black, then white) p(white, then black) p(2white)

    asked on October 28, 2011
  38. physics

    A 49-kg lead ball is dropped from the leaning tower of Pisa. The tower is 55 m high. (c) What is the speed of the ball 1.3 s after it is released?

    asked on September 4, 2012
  39. Math - Trig

    The depth of water, h, in metres at time t, in hours, is given by the formula: h(t)=7.8+3.5sin[pi/6(t−3)]. Its a 24 hours period and t=0 is midnight. Provide an algebraic solution to determine the time(s) of day, the water reaches the depth of 10.29 m i

    asked on July 22, 2016
  40. Physics

    A hollow, thin-shelled cylinder of mass rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?

    asked on July 8, 2012
  41. biochem

    2) Compound called Moniliformin has been shown to affect pyruvate dehydrogenase complex activity and inhibit the conversion of pyruvate to acetyl coA. Without knowing specific details on how this drug exert its inhibitory effect, could you outline

    asked on July 14, 2017
  42. chemistry

    Okay so i have this titration question and I don't really know the steps because everyone explains it differently. IF someone could explain me the steps of how i could solve this questions and other like this. Thanks In three runs of titration 22.8mL,

    asked on September 11, 2016
  43. Physics

    A ball is thrown from a point 1.1 m above the ground. The initial velocity is 20.0 m/s at an angle of 32.0° above the horizontal. (a) Find the maximum height of the ball above the ground. (b) Calculate the speed of the ball at the highest point in the

    asked on September 13, 2012
  44. Physics

    Jerry bicycles from his dorm to the local fitness center: 3.06 miles east and 2.07 miles north. Cindy's apartment is located 1.5 miles west of Jerry's dorm. If Cindy is able to meet Jerry at the fitness center by bicycling in a straight line, what is the

    asked on September 9, 2012
  45. biotechnology!!

    I'd greatly appreciate if some one could very briefly inform me on any two techniques used in agricultural biotechnology - one that relies on new biotechnology (ie molecular) and one that relies on old biotechnology (ie not molecular!) and the same for

    asked on November 23, 2009
  46. physics

    A 12.0-g piece of clay is launched horizontally at a 102-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 52 N/m. The piece of clay sticks to the side of the block. If the

    asked on March 7, 2016
  47. Math, Statistics

    According to a recent survey, 38% of americans get 8 hours or less of sleep. if 25 people are selected, find the probability that 14 or more people will get 8 hours or less of sleep.

    asked on January 11, 2013
  48. Stats

    Twenty randomly selected students took the statistics final. If the sample mean was 88 and the ó =5.2, construct a 95% confidence interval for the mean score of the students.

    asked on March 2, 2012
  49. English

    Okay so i have a have chosen 2 book (Day of the Triffids & Oryx and Crake ) We had to describe a theme that describes both these book below is the theme i proposed but my teacher said it was "to broad". So i would like some help and tips of how to make it

    asked on September 27, 2016
  50. Chemistry G.12

    Check if im right please: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) At a specific time in the reaction, ammonia is disappearing at rate of 0.068 mol/(L • s). What is the corresponding rate of production of water? I did Rate of Production H20 = 1/6(0.068) =

    asked on September 22, 2016
  51. Algebra

    A cord is cut into two pieces of different lengths. The sum of the two lengths is 12 centimeters, and the difference between the two lengths is 4 centimeters. Find the lengths of the two pieces of cord.

    asked on April 26, 2016
  52. math

    A bicycle wheel travels about 82 inches in 1 full rotation. What is the diameter of the wheel, to the nearest inch?

    asked on March 25, 2011
  53. college algebra

    When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in

    asked on January 15, 2010
  54. U.S. History

    During the presidency of Richard Nixon, the United States a) sought to protect human rights. b) sought to close the USSR out of world markets. c) retreated into relative isolation. d) worked for a reduction of tensions known as detente. e) none of the

    asked on May 10, 2018
  55. biochem

    3)Based on your understanding of metabolic processes what would be the short and long term effects of inhibiting the TCA cycle? Explain why there is a need for replenishment of TCA cycle metabolites.

    asked on July 14, 2017
  56. p

    A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

    asked on March 8, 2016
  57. physics

    Two objects of masses m1 = 0.58 kg and m2 = 0.92 kg are placed on a horizontal frictionless surface and a compressed spring of force constant k = 300 N/m is placed between them as in figure (a) shown below. Neglect the mass of the spring. The spring is not

    asked on March 8, 2016
  58. physics

    ball of mass m = 1.70 kg is released from rest at a height h = 54.0 cm above a light vertical spring of force constant k. The ball strikes the top of the spring and compresses it a distance d = 8.80 cm Neglecting any energy losses during the collision,

    asked on March 3, 2016
  59. math

    a formula for calculating simple interest is I = Pr, were I is the interest earned in dollars, P is the principal or original investment, and r is the fixed rate of interest. If the amount of interest earned is $2.25 and the interest rate is 3%, what is P?

    asked on February 14, 2013
  60. Intermediate Algebra

    Simplify the following exponents and rewrite it in an equivalent form with positive exponents..24x^3y^-3/72x^-5y^-1

    asked on March 30, 2012
  61. Intermediate Algebra

    convert to scientific notation...0.000243

    asked on March 30, 2012
  62. Algebra

    The radiator in Natalies car contains 6.3L of antifreeze and water.This mixture is 30% antifreeze.How much of this mixture should she drain and replace with pure antifreeze so that there will be a mixture of 505 antifreeze?

    asked on March 22, 2012
  63. Art History

    7. Compare the naturalism of Chinese art of the 10th to 12th centuries with the Western Romanesque art of the same time period. Use the Guanyin Bodhisattva, the handscroll, Ladies Preparing Newly Woven Silk, and the landscape paintings for specific

    asked on December 8, 2010
  64. economics

    Which is likely to have the larger effect on the CPI, a 2 percent increase in food or a 3 percent increase in diamond rights? (Hint: Assume a normally distributed country with male:female ratio of 1:1) Can anyone please give me some hints to do it???or

    asked on September 28, 2008
  65. economic

    Suppose that your firm was accused of illegally conspiring with other sellers to act as a monopolist. In searching for an expert witness, you discover one economist who has calculate the cross elasticity of demand for your industry's product to be+2.05,

    asked on October 13, 2006
  66. physics

    A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

    asked on March 7, 2016
  67. Algebra

    Write linear equation in form y=mx+b given this condition parallel to y=-1/2x +1, through (4,2)?

    asked on May 17, 2013
  68. psychology

    Aresearcher is studying people of normal weight and obese individuals.She wants to know how the time of day affects hunger feelings in these two groups. when, during the experiment, the researcher looks at her watch, she has introduced what into the

    asked on September 12, 2012
  69. Intermediate Algebra

    Dale and Kim can assemble a swing set in 1 1/2 hours.Working alone it takes kim 4 hours longer than Dale to assemble the swing set .How long does it take Dale working alone to assemble the swing set?

    asked on April 2, 2012
  70. Intermediate Algebra

    Short answer.Raise quanity in parenthesis to the indicated exponents and simplify te resulting expression. Express powers with positive exponents.(50x^2y^-4/200x^-2y^4)^3

    asked on March 30, 2012
  71. physics

    a ball is dropped from a height of 10 meters.if the energy of the ball is reduced by 40% after striking the ground,how high can the ball bounce back?

    asked on February 16, 2012
  72. calculus

    Please help me? ln(x+1)-ln(x-2)=ln(5) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve logarithmic equation.

    asked on February 17, 2011
  73. Art

    What is it called when you use one word to draw a picture of that word. The letters must be all the same way? I know Ive seen pictures like this in like Dentist office?

    asked on August 23, 2008
  74. biochem

    5)A recent study showed that a newly discovered drug that acts as an uncoupling agent of the electron transport chain was causing significant weight loss in humans. A) Describe how uncoupling agents work? b) Based on your knowledge of metabolic processes

    asked on July 14, 2017
  75. physics

    A 12.0-g piece of clay is launched horizontally at a 102-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 52 N/m. The piece of clay sticks to the side of the block. If the

    asked on March 8, 2016
  76. math

    A submarine enters the sea at an initial speed of 2 meters per minute. The submarine's speed triples every minute. What is the submarine's speed after 5 minutes?

    asked on November 2, 2015
  77. psycology

    in order to increase self esteem ,experts say you should what

    asked on May 10, 2013
  78. Physics

    Modern bowling alleys have automatic ball returns. The ball is lifted to a height of 2.50 at the end of the alley and, starting from rest, rolls down a ramp. It continues to roll horizontally and eventually rolls up a ramp at the other end that is 0.700

    asked on July 7, 2012
  79. Intermediate Algebra

    Find the product...7x(-7x^2+9x+8)

    asked on April 4, 2012
  80. Intermediate Algebra


    asked on April 2, 2012
  81. Intermediate Algebra

    Short Answer.Raise the quanity in parenthesis to the indicated exponents and simplify.Express answers with positive exponents.(-27x^0y^-2/54x^-5y^-4)^-2

    asked on March 30, 2012
  82. algebra

    Write the slope intercept equation for the line that passes through (14,-2) and is perpendicular to 7x-10y=18.Please show work.

    asked on March 19, 2012
  83. geography

    How do a country's size and shape affect its power and stability?

    asked on July 10, 2011
  84. pre algebra

    How do I solve this equation the find te slope of the line? Please show me the steps in solving this equation.

    asked on February 10, 2010
  85. basic math

    how do i writ 21/100 in decimal form

    asked on August 28, 2009
  86. economic

    In response to increasing thefts by drug addicts, the government passess ligislations increasing both the penalty and the probability of punishment for suppliers of illegal drugs. what would you predict would happen to the rate of property crime committed

    asked on October 13, 2006
  87. English

    How do euphemisms, cliché’s, proverbs and ready phrases influence the way you write and speak? Don't provide me an answer rather put me on the right track of thinking. Please and Thank you!

    asked on September 14, 2016
  88. Health

    set a SMART mental health goal and One social health goal

    asked on July 27, 2016
  89. health II

    Every nerve impulses stimulate the breathing process or ventilation, which moves air through a series of passages into and out of the lungs

    asked on March 2, 2016
  90. pscyhology

    tentative explanation is known as ?

    asked on January 19, 2014
  91. psycology

    in order to increase self esteem ,experts say you should what

    asked on May 10, 2013
  92. chemistry

    wh at is prtoplam

    asked on November 15, 2012
  93. chemistry

    a 225.0 gram sample of aluminum is heated and the temperature increased from 50.0 celsius to 65.0 celsius for temperature change of 15.0 celsius. how many calories of heat was absorbed to produce this temperature change?

    asked on September 24, 2012
  94. Physics

    Vector A is directed along the positive y-axis and has magnitude 5.0 units. Vector B is directed along the negative x-axis and has magnitude 6.0 unit. (a) What are the magnitude and direction of A + B? (b) What are the magnitude and direction of A − B?

    asked on September 9, 2012
  95. Capstone Accounting

    Assessment of the strategic fit between Square D and Schneider. What are the pros and cons of a combination?

    asked on June 7, 2012
  96. math

    My sister is playing a dart game at an arcade. She can earn 2, 3, or 6 points with each dart. She scored 24 points. How many ways could she score 24 points given that each dart thrown landed on the dart board?

    asked on May 8, 2012
  97. Intermediate Algebra

    Solve by factoring..2a^2+3=7a

    asked on April 2, 2012
  98. Intermediate Algebra

    Use scientific notation to divide the following 2 numbers .Express the answer using scientific notation; retain at least3 decimal places (9.4*10^6)/(4.97*10^2)

    asked on March 27, 2012
  99. Intermediate Algebra

    simplify the follwing expression in terms of i , the squareroot of -16

    asked on March 27, 2012
  100. Algebra

    Solve using the elimination method.Show work.If the system has no solution or an infinite number of solution state ths...-5x+4y=-16,-15x+2y=-58

    asked on March 22, 2012


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