Questions and responses by sasha, page 2
  1. Math

    Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm

    asked on November 15, 2010
  2. Physics

    (a) Suppose you throw a football. At some instant, when the ball is in contact with your hand, your hand exerts a force of 100 N on the ball in the +x direction. What is the force of the ball on your hand?

    asked on November 19, 2009
  3. history

    What would be a good thesis statement for my intro paragraph? Effect and Evolution of African Americans in Minnesota Intro The first Great Migration occurred after the Civil War and after the 13th amendment was passed. With the passing of the 13th

    asked on November 11, 2009
  4. Sorry- Chemistry / Ionic Bonding

    Hello My exams are coming I'm a straight A student .. the problem however is : My textbooks , teacher and every piece of work that he gives us is complicated can someone explain me how Ionic Bonding works . Please I really beg you... I need your help! My

    asked on June 7, 2007
  5. HELP Please. Geography.

    I found some links for the geological history for the appalachian mountains BUT it confuses me. Can you please simplify the formation of the Appalachian mountains?? please? thanks. Basically the mountains were created due to the merging of the continents

    asked on April 23, 2007
  6. Math

    To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of gold in a 14 karat gold object, multiply the object's weight by 0.583. Part 1 Which contains more gold, a 22 karat gold object or a 14

    asked on October 23, 2017
  7. Math

    m∠2 + m∠3 + m∠4 = 180°/ reason: Given? m∠1 + m∠2 = 180°/reason: Supplementary Angle definition m∠1 + m∠2 = m∠2 + m∠3 + m∠4/reason: Substitution property equality m∠1 + m∠2 - m∠2 = m∠2 + m∠3 + m∠4 -m∠2/reason= Subtraction

    asked on October 24, 2016
  8. Organic Chemistry

    I spotted a commercial TLC plate, coated with silica gel, with a pure benzoin solution. After running the TLC plate in methylene chloride, the benzoin separated into two different spots. Rf values are 0.6 and 0.9. What explains this? A pure material should

    asked on October 2, 2015
  9. Physics Honors

    A 47.0 g golf ball is driven from the tee with an initial speed of 48.0 m/s and rises to a height of 23.2 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 8.0 m below its

    asked on February 13, 2015
  10. Physics

    A pond is 12 metres across. The crests of two successive waves are 60.0 cm apart and they each move across the pond in 15 seconds. a)What is the velocity of the waves? b)What is the frequency of the waves? c)What is the period of the waves?

    asked on November 23, 2014
  11. Early Childhood Education

    A needs and services plan is a. written by a pediatrician b. only for infants and toddlers with special needs c.a plan discussed by parents and caregivers upon entry into an infant-toddler program d. a formal plan to serve children that is made by the

    asked on September 21, 2013
  12. Biology

    Consider this pathway: signaling ligand ¨ G protein-coupled receptor ¨ G protein ¨ adenylyl cyclase ¨ cAMP. Identify the second messenger. Answer: A)G protein B)GTP C)adenylyl cyclase D)cAMP

    asked on April 12, 2013
  13. Math

    In American roulette where there are 38 numbers, how many possible outcomes can you have if you bet on an odd number?

    asked on March 3, 2013
  14. algebra


    asked on February 24, 2012
  15. physics

    A mass of 3.4kg sliding along a frictionless floor at 1.5 m/s strikes and compresses a spring of constant k=295 N/m. The spring stops the mass. How far does the mass travel while being slowed by the spring? How long does the mass take to stop?

    asked on January 22, 2012
  16. physics

    In college softball, the distance from the pitcher's mound to the batter is 43 feet.If the ball leaves the bat at 110 mph, how much time elapses between the hit and the ball reaching the pitcher?

    asked on February 19, 2011
  17. physics

    If the average household uses electrical energy daily at the rate of 500. W, how much U-235 must undergo fission to supply this need for a year? (assume 200. MeV of energy are generated per fission and that the power plant is 46% efficient). 1. Energy used

    asked on March 16, 2010
  18. Physics

    Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 77.0 m and the coefficient of friction is 0.36?

    asked on February 2, 2010
  19. Physics

    I just need help with part c. I know stopping takes longer but we have to explain why. A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 849 N. (a) As the elevator moves up, the scale reading

    asked on January 5, 2010
  20. Physics

    You are driving a 2590.0 kg car at a constant speed of 14.0 m/s along an icy, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. Your wheels lock, the tires begin skidding, and the car slides to

    asked on January 5, 2010
  21. physics

    A race car can be slowed with a constant acceleration of -14 m/s2. (a) If the car is going 44 m/s, how many meters will it travel before it stops? (b) How many meters will it take to stop a car going twice as fast?

    asked on October 27, 2009
  22. physics

    a tennis ball of mass 20g is released from rest at a height of 4m above the ground. on hitting the ground,it raises to a height of 3m.find the velocity with which it hits the ground.

    asked on May 19, 2017
  23. MATH

    Sketch a rough graph of the yield of a crop as a function of the amount of fertilizer used.

    asked on October 3, 2016
  24. language arts

    What statement in the passage weakens the argument that personal music players cause hearing loss? Experts say more research is needed to prove a definite link between portable music and DVD players and hearing loss. Twenty-nine percent of students

    asked on December 17, 2015
  25. Physics-check plz

    If a pitcher throws a fast ball with a speed of 35 m/s. The ball has a mass of 220 grams. a) how much work was done in throwing the ball? b) If the catcher catches the ball by moving his mitt 15 cm. backward what force did he exert? a.) Throwing the ball

    asked on June 20, 2014
  26. Calculus

    Use the Evaluation Theorem to find the exact value of the integral ç^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.

    asked on April 12, 2013
  27. finace

    The 6 percent preferred stock of Mercer Livestock is selling for $62 a share. What is the firm's cost of preferred stock if the tax rate is 34 percent and the par value per share is $100? (Please calculate the arithmetic solution and show your work)

    asked on January 12, 2012
  28. calculus

    what is the equation of the tangent line to the curve x^3 + 2y^2 + 3xy = 6 at the point (1,1)?

    asked on December 15, 2010
  29. Math

    Tell whether the triangle with the given side is a right triangle;1.4 m,4.8 m,5m. Explain please.

    asked on November 15, 2010
  30. calculus

    verify that the function satisfies the hypothesis of the mean value theorem on the given interval. then find all numbers c that satisfy the conclusion of the mean value theorem. f(x) = x/(x+2) , [1,4]

    asked on November 7, 2010
  31. Physics

    As a baseball is being caught, its speed goes from 27.5 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.150 kg. (a) What is the baseball's acceleration? 5500 m/s^2 (b) What are the magnitude and direction of the force acting on it? and is

    asked on January 5, 2010
  32. 12th grade Physics

    charges of +1.000 C are located at the corners of a 45-45- right triangle which has a hypotenuse that is 1.414 m long. Determine the resultant force on the charge located at the vertex of the right angle.

    asked on December 15, 2009
  33. math

    Business and finance. In a bottling company, a machine can fill a 2-liter bottle in 0.5 seconds and move the next bottle into place in 0.1 second how many 2-L bottles can be filled by the machine in 2 hour?

    asked on August 11, 2009
  34. physics

    the inclined plane is 30* from the ground a) What is the mechanical advantage of the inclined plane? b) A weight of 100N is to be lifted using the inclined plane. What is the minimum applied force for this job? c) Suppose that an applied force of 200N is

    asked on January 21, 2009
  35. Human Services

    What are the merits of multiple perspectives when examining human behavior? Why is it important? Provide examples of the impact of using multiple perspectives when providing services to a family or individual.

    asked on January 7, 2009
  36. english-essay

    i have to write a critical analysis of "The Trial" by franz kafka. and i wanted to know what points i should cover in my essay. also how many paragraphs should my essay consist of.

    asked on March 6, 2008
  37. Geography

    I need to do a power point presentation on the Appalachian mountains. I need to find the geological history,rock structure,appearance,soil, vegetation,wildlife, and human activities. Can you please provide me with links with these information? Thanks so

    asked on April 23, 2007

    Magnetic field is 0.5T, radius is r=1m, current in one loop is I=2A. the angle between the magnetic moment and the external B field is 30 degrees. calculate the magnitude of the magnetic torque. so i know that torque= IANBsin(30) torque=

    asked on March 30, 2018
  39. chemistry

    The enthalpy change for the reaction below at 25oC is -2,252 kJ (per mole of C11H24). What is the internal energy change for the reaction at 25oC? 11 CO(g) + 23 H2(g) --> C11H24(l) + 11 H2O(l)

    asked on November 3, 2014
  40. Statistics

    The intermediate answers from some calculations based on whole number scores are X=4.3467892 and Y=3.3333. We now want to find X(2)+Y(2). After rounding, what values of X and Y do we use?

    asked on January 14, 2013
  41. midterm review scavenger hunt funsheet

    water moves in bursts

    asked on January 13, 2013
  42. Geography

    Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop? My Answer: In my opinion, the most pressing problem would have to be the management of poverty. South

    asked on June 4, 2012
  43. Fluids

    A pipe of constant diameter d = 10.5 cm carries water up a hill h = 38.1 m high. How much pressure is required at the bottom of the hill if the water is to reach the top? Any help would be great

    asked on March 9, 2012
  44. Math

    There are 10 sailboats in the harbor. Some of the boats have 2 sail & some of boats have 3 sails. If there are 24 sails visible on all of the boats, how many boats have 3 sails & how many boats have 2 sails?

    asked on January 21, 2012
  45. Chemistry

    3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?

    asked on June 28, 2011
  46. Health

    What does it mean if you have brown caking around your belly button, even if you follow basic hygenic practices.

    asked on April 4, 2011
  47. Maths

    Hi! I'm working on a math assignment... My teacher wants me to find rainfall data and then work out the volume of water that would fall on a roof. I've already worked out the roof area but the roof is made up of multiple squares. The teacher would like me

    asked on March 31, 2011
  48. Algebra

    Two cities are 5 1/2 inches apart on a map. The actual distance between the cities is 66 miles. What scale was used to draw the map?

    asked on January 10, 2011
  49. Calculus

    At a certain point in time, a cubical crystal has edges 5 mm in length, and these edges are growing at a rate of 2 mm per hour. How fast is the volume increasing?

    asked on December 31, 2010
  50. COM_155

    How do i write three sentence using plurals correctly and three sentences using possessives correctly on the topic of how to store personal financial information effectively and efficiently.

    asked on November 14, 2010
  51. math

    sketch the curve using the domain, intercepts, symmetry, asymptotes, local max and min and concavity. y= x /(√(x^2) - 1)

    asked on November 10, 2010
  52. calculus

    find dx/dy implicitly from √(x+y) = 1 + (x^2)(y^2). then solve for dx/dy explicitly.

    asked on October 19, 2010
  53. calculus

    find h'(2) given that f(2) = -3, g(2) = 4, f'(2)= -2 and g'(2)= 7. A. h(x) = 5f(x) - 4g(x) B. h(x) = f(x)g(x) C. h(x) = f(x)/g(x) D. h(x) = g(x)/ 1+ f(x)

    asked on October 6, 2010
  54. social studies

    A study of the causes of the American Revolution of 1776, the French Revolution of 1789, and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when

    asked on June 20, 2010
  55. physics

    Determine how much water would be present in a 10 tonne sample of lignite, has a moisture content of 65%, before crushing and drying. 10 tonnes is 10,000 kg.

    asked on March 10, 2010
  56. 12th grade Physics

    the force between two charges is 20.0 N. if one charge is doubled, the other is tripled, and the distance between them is halved, calculate the resultant force between them.

    asked on December 15, 2009
  57. Physics

    A 2.6 N block is at rest on a horizontal surface. A 0.9 N upward force is applied to the block by means of attached vertical string. (a) What is the magnitude of the force of the block on the horizontal surface?

    asked on November 20, 2009
  58. science

    what is the name for precise information provided by numerical data

    asked on September 17, 2008
  59. math ( average)

    a student wants to get an average of 80 on the 5 tests to earn an A grade.on the 4 test he gets 79, 88,64,78. how much should he score on the 5th test so that he gets this average of 80?

    asked on October 18, 2007
  60. ICT - DataBase

    Hello I have an exam tommorrow and my question is : What is the difference between the types of the data base text and number in the data base. My teacher tells us that a phone number is in the text column because it does not change. But in number it's

    asked on June 10, 2007
  61. Physics - Ionic bonding

    Hello My exams are coming I'm a straight A student .. the problem however is : My textbooks , teacher and every piece of work that he gives us is complicated can someone explain me how Ionic Bonding works and when we're taking about this table here can

    asked on June 7, 2007
  62. investing in the stock market

    So unless I become a high-risk day-trader, there really is no way for me to make a living just investing in the stock market? So did people like Warren Buffet and Morgan Stanley build their wealth some other way? And what about the fictional character

    asked on June 23, 2005
  63. math

    A leak in a water tank causes the water level to decrease by 3.6×10^−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×10^4 seconds? express the answer in scientific notation.

    asked on April 9, 2018

    The output voltage of AC source is V(t) = (25V)sin(5πt). what is the rms value of the voltage? answer: 18V, but how???

    asked on March 28, 2018
  65. Chemistry

    An aqueous solution of ethyl alcohol is made by transfering 1.32 mL of liquid ethyl alcohol to a 50.0 mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the volume/volume percentage of ethyl alcohol in the solution?

    asked on March 27, 2017
  66. Math

    The table shows the population of a school for the years 1992-2008. Year: 1992, 1994 1996, 1998, 2000, 2002, 2004, 2006, 2008 Population: 628, 656, 692,751, 793, 840 ,868, 902, 940 Which is the best prediction for the population in 2012? 1000 1100

    asked on October 21, 2016
  67. Math

    1) Which sum best represents the model shown below? There are 3 blue blocks, and each of them separately equal x^2. There are 2 green blocks that each separately equal x. There are 2 red blocks that each separately equal -1. And there is 1 yellow block

    asked on April 29, 2015
  68. AlgebraII( Probability)

    1)a number less than 35 is chosen. 2)A prime number is chosen. 3) A multiple of 4 is chosen. 4)A perfect cube is chosen. Please help me.

    asked on April 27, 2014
  69. Electricity

    Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?

    asked on April 8, 2014
  70. Math

    Grace painted 1/3 of the wall. Sarah painted 2/5 of the wall. How much of the wall have grace and sarah painted ?

    asked on January 23, 2014
  71. chemistry

    A 20.9 g sample of nitrogen gas combines completely with 4.5 g of hydrogen gas to form ammonia. What is the mass of ammonia formed? A 12.7 g sample of X combines with a 24.4 g sample of Y to form the compound XY2. What is the mass of the reactants?

    asked on September 15, 2013
  72. calculus

    find the derivative of the following: 3x^2 ln(2x) e^2x ln√x+3 please try and show few steps and laws of logarithmics.

    asked on April 13, 2013
  73. Algebra

    Mickey went to Donald Dee's to buy 75 milkshakes for his party. Each milkshake cost the same integer amount of cents. In total, Mickey spent at least $124.00 on milkshakes. What is the smallest possible cost (in cents) of a milkshake?

    asked on April 11, 2013
  74. Math

    I have 5 friends. I bought three pizzas (all the same size). One was divided into 4 equal parts, the 2nd was divided into 6 equal parts and the 3rd pizza was divided into 8 equal parts. Is there any way I can show how to share these pieces so that each of

    asked on March 12, 2013
  75. math

    If a business borrows $15,000 and repays $20,700 in 4 years, what is the simple interest rate?

    asked on November 11, 2012
  76. intrest rates

    If the principal P = $500, the interest I = $100, and the rate r = 10%, find the following. (a) What is the time? years (b) What is the future value?

    asked on November 11, 2012
  77. Social Studies

    What are some importance and reasons for monuments and forts in guyana?

    asked on November 8, 2012
  78. English

    Give a definition of an uncountable and a countable nouns and examples PLEASE and THANK YOU!

    asked on July 23, 2012
  79. History

    What were the special characteristics of the population of Virginia in the seventeenth century and what accounted for them?

    asked on May 22, 2012
  80. cultual studies

    Analyze and interpret the following quotation: “Worldwide, non-Western cultures faced fundamental challenges to their cultural identities—not so much a recentering of culture but a decentering of culture” (Sayre, 2010, p.419).

    asked on May 20, 2012
  81. Science

    State the two broad classes of wood and describe them.

    asked on February 27, 2012
  82. Music

    List the elements of music.

    asked on February 11, 2012
  83. Computers

    Name 5 examples of secondary storage devices and describe them

    asked on January 28, 2012
  84. reading

    in the princess diaries, do mia and michael get back together????????? i need to know!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! please help

    asked on December 8, 2011
  85. English

    Does what we watch and experience in popular culture affect the way our families behave? Explain your rationale.

    asked on October 3, 2011
  86. Finance

    If depreciation is not a cash flow item, why does it affect the level of cash flows from a project in any way? Why are we interested only in incremental cash flows rather than total cash flows?

    asked on January 25, 2011
  87. Finance

    Strategic Initiative I have chosen amazon store online as my company. I need to come up with an intro and conclusion i have the body of the paper. Within these 2 paragraphs i need to describe the relationship between strategic and financial planning. How

    asked on January 22, 2011
  88. english

    Using plurals and possessives. How can you write a sentence about storing financial information effectively and efficiently.

    asked on January 6, 2011
  89. Math

    Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm Explain please.

    asked on November 15, 2010
  90. math

    find the local maximum and minimum values of f using both the first and second derivative tests. which method do you prefer? f(x) = x/(x^2+4)

    asked on November 7, 2010
  91. Econ

    Explain how an economist could use the slope of the yield curve to analyze the probability that a recession will occur and why the spread may matter.

    asked on November 4, 2010
  92. Mathematics for Liberal Arts

    Each round of the game costs $1 to play. A round consists of you choosing a number from 1 to 10 and then picking a card at random from a standard deck of cards. I fyou pick a card with the number you chose, you win $5. If you don't, you lose your dollar.

    asked on October 24, 2010
  93. calculus

    find an equation of the tangent line to the curve y = x √x that is parallel to the line y = 1 + 3x.

    asked on October 7, 2010
  94. calculus

    find an equation of the tangent line to the curve y = x √x that is parallel to the line y = 1 + 3x.

    asked on October 6, 2010
  95. English

    In my class we were reading a short story call The Pedestrian by ray bradbury and my teacher ask me a bunch of questions like for example What is the theme of the story but i don't get the question ? i didn't understand the story neither

    asked on September 15, 2010
  96. algebra 1

    15.6+x for x= -17.9

    asked on September 12, 2010
  97. algebra

    order the following numbers from greatest to least : 3.8 , -4.3 , -4.1 . express the answers by usinq < , , _>

    asked on September 5, 2010
  98. Calculus

    Find the points of inflection of the curve below. Round the answers to three decimal places. (Hint: All three are in a straight line.) y= (1+x)/(1+x^2)

    asked on February 8, 2010
  99. physics

    1. Three particles with charges of +11 mC each are placed at the vertices of an equilateral triangle with sides of 15.0 cm. What is the magnitude and direction of the net force on each particle? 2. A proton is released in an uniform electric field and it

    asked on January 4, 2010
  100. History

    to what extent was Hitler's rise to power due to personal appeal and ability?

    asked on November 19, 2009


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