K

Newest questions posted by K
  1. Physics

    What is the ultimate strength and how can it be determined?
  2. Math

    4x=36
  3. c programming

    write a program and create a flowchart or psuedocode that will ask the user for 3 grades. the program will calculate the average on those 3 grades. the program will display the 3 grades the average and the letter grade.
  4. Biology

    What selective advantages drove the development of sexual reproduction, and how did it develop?
  5. Science

    The dimensional formula of density of pressure is D= force/ area = Md^-1T^-2 What does M, d and T and their exponents mean?
  6. Physics

    A Ferris wheel with radius 9.5 m initially rotates at a constant rate by completing 0.75 rev in 25.00 s. It then begins to decelerate at a rate of 0.30 rad/s2 with its only passenger at the top of the wheel. Find the direction of the total acceleration
  7. Second solution for ambiguous case?

    Given a = 31.5, b = 51.8, A = 33 degrees, find the value of c in triangle ABC. bsinA = 51.8sin33 = 28.21 -> bsinA < a < b so there are two solutions Using sine law: sinB/b = sinA/a sinB/51.8 = sin33/31.5 sinB = 51.8 * sin33/31.5 sinB = 0.895628635 B =
  8. Math

    Question : find (h,k) and radius x^2 + y^2 +1/2x + 2y +1/16 = 0 According to the equation : (x−h)^2+(y−k)^2 = r^2 x^2 + y^2 +1/2x + 2y +1/16 = 0 (x^2+1/2x+1/16)+(y^2+2y+1)=−1/16+1/16+1 (x+1/4)^2+(y+1)^2=1 so (h,k) = (-1/4, -1) and r = 1 theres no
  9. Math

    A car traveling from town A to town B at an average speed of 80 km/h took 54 minutes. Another car took 40 minutes to travel the same distance. What was the difference in their speed in km/h?
  10. chemistry / science

    With regard to Stainless Steels, how is a passive layer regenerated? thanks in advance!!
  11. math

    An Artisan has 63 kg of metal of density 7,000kg/m3. He intends to use make a rectangular pipe with external dimensions 12 cm by 15 cm and internal dimensions 10 cm by 12 cm. Calculate the length of the pipe in meters.
  12. math

    Manyatta Village is 74 km North West of Nyangata Village. Chamwe village is 42 km west of Nyangata. By using an appropriate scale drawing, find the bearing of Chamwe from Manyatta.
  13. math

    The angle which the tangent to the curve at the point (2, 5) makes with the horizontal
  14. Math

    The Position of two A and B on the earth’s surface are (36°N, 49°E) and (36°N, 131°W ) respectively. (a) The difference in long between town A and town B (2 marks) (b)) Given that the radius of the earth is 6370, calculate the distance town A and
  15. math

    Find the reciprocal of 0.342. Hence evaluate:(√0.0625/0.342)
  16. Chem - Redox rxn

    Just wanna make sure, if i did it correct or not. Cl2 + 2NaBr --> Br2 + 2NaCl (0)---(+1)--(-1)---(0)------(+1)(-1) So Cl2 loss = oxidation Br2 Gain = Reduction Am I correct ? Thanks
  17. Math

    The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of
  18. Math

    The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of
  19. Math

    The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of
  20. Chemistry

    A 50.0 −mL sample of 1.50×10−2 M Na2SO4(aq) is added to 50.0 mL of 1.23×10−2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains unprecipitated? Calculate the moles of Ca(NO3)2 you have (concentration * volume in L). Moles of Ca(NO3)2 = moles of
  21. Chemistry

    A possible reaction for converting methanol to ethanol is CO(g)+2H2(g)+CH3OH(g)→C2H5OH(g)+H2O(g) ΔH0 for this reaction at 25∘C. ΔH0 = -165.7 kJ ΔS0 for this reaction at 25∘C. ΔS0 = -227.4 J/K ΔG0 for this reaction at 25∘C. ΔG0 = -97.9 kJ -
  22. Math

    The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone
  23. Math

    Two shopkeepers, Juma and Wan bought some items from a wholesaler. Juma bought 18 loaves of bread, 40 packets of milk and 5 bars of soap while Wan bought 15 loaves of bread, 30 packets of milk and 6 bars of soap. The price of a loaf of bread, a packet of
  24. Math

    Two shopkeepers, Juma and Wan bought some items from a wholesaler. Juma bought 18 loaves of bread, 40 packets of milk and 5 bars of soap while Wan bought 15 loaves of bread, 30 packets of milk and 6 bars of soap. The price of a loaf of bread, a packet of
  25. math

    Three factories Buka, Sakono and Rama produce sugar in one hundred kilogram bags daily. Buka produces three times as much as Rama. Sakono produced two times as much as Rama. If Sakono produces 500 bags, how many tones altogether do three factories produce
  26. Chemistry - acid base

    You are asked to bring the pH of 0.500 L of 0.450 M NH4Cl to 7.00. 12.0 M NH3 How many drops (1 drop 0.05 mL) of this solution would you use? What I did, but its incorrect Using HH equation I found out NH4 pKa = 9.24 from table pH = pKa + log [A-] / [HA]
  27. Chemistry - acid base

    A 50.0 mL sample of 1.50×10−2 M Na2SO4(aq) is added to 50.0 mL of 1.23×10−2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains unprecipitated? What I did n=CV Na2SO4 = (1.50×10−2 M)(0.05L) = 0.00075 Ca(NO3)2 = (1.23×10−2 M)(0.05L) = 0.000615
  28. Chemistry - acid base

    What volume of 10.0 M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? ( Tris. At 25 ∘C, Tris has a pKb of 5.91 ) a) The buffer from Part A is diluted to 1.00 L. To half of it (500. mL), you add 0.0250 mol of hydrogen ions
  29. Math

    The two legs of a right triangle are in the ratio √3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle. Please provide COMPLETE solution and FINAL ANSWER.
  30. Math

    The two legs of a right triangle are in the ratio √3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle.
  31. Pre-Algebra

    Hi has anyone done lesson 10: Geometry Unit Test Essential Algebra Readiness (Pre-Algebra) B Unit 1: Geometry i really need help has anyone done it please if u have please help!!!!
  32. Pre-Algebra

    Hi i need help with lesson 10: Geometry Unit Test Unit 1 1. Name a pair of complementary angles. 1 and 4 1 and 2 3 and 4 1 and 6 2. If m
  33. Chem

    A sample of NH4HS(s) is placed in a 2.61 −L flask containing 0.120 mol NH3(g). NH4HS(s)⇌NH3(g)+H2S(g) Kp=0.108 at 25∘C Part A What will be the total gas pressure when equilibrium is established at 25∘C? I'm getting P = 1.21atm which is wrong. Can
  34. Math

    the position vectors od points A and B woth respect to the original O, are (-8,5)and (12,-5) respectively. point M is the midpoint of AB and N is the midpoint of OA. Fin the coordinate of N and M; the magnitude of NM
  35. Math

    Use mathematical induction to prove the property for all positive integers n. A factor of (n^3+3n^2+2n) is 3.
  36. Math

    Three factories Buka, Sakono and Rama produce sugar in one hundred kilogram bags daily. Buka produces three times as much as Rama. Sakono produced two times as much as Rama. If Sakono produces 500 bags, how many tones altogether do three factories produce
  37. Math

    Twenty members of a group contributed sh 80000 each to buy a piece of land. They already had sh 120000 in a bank out of which sh 20000 was to remain in the bank and the rest spent in buying the price of land. How much did the piece of land cost?
  38. Math

    Twenty members of a group contributed sh 80000 each to buy a piece of land. They already had sh 120000 in a bank out of which sh 20000 was to remain in the bank and the rest spent in buying the price of land. How much did the piece of land cost?
  39. Math

    Pupils in a school prepared a circular flower garden of diameter 28 meters. They dug holes each 4 meters apart along the circumference for planting flowers. How many holes were dug?
  40. math

    The number of children at a film show was 49 more than that of adults . They entry fee for each child was sh 15 while that of each adult was sh 30. The total amount of money paid by the was sh 2055. How much money was paid by the children and the adults
  41. Math

    Mwachia and Mbuu shared some money in the ratio 5:2. Mbuu received sh 30 less than Mwachia. How much money did Mbuu get?
  42. Math

    A tailor made 48 pieces of uniform. Half of the number of the uniforms was each made using 1 1⁄4 meters of material. A quarter of the remainder was each made using 1 1⁄2 meters of material and the rest was each made using 1 3⁄4 meters of material.
  43. Government HELP

    How are the first amendment rights seen in the constitution? Like how congress can't change religion
  44. Math

    In a cupboard there are pencils, rulers and books. The number of pencils is 15 more than that of rulers. The number of books is three time that of rulers. If the number of pencils is p, which one the total number of items in the cupboard?
  45. math

    What is the area of the region bounded by the x-axis and the lines x+y=24 and 3x-2y=12? Please show full solution and explanation
  46. math geometry

    A right circular cone has a base diameter of 10 and a height of 18. A second right circular cone has a base diameter of 15. If the volume of the second cone is equal to the volume of the first cone, then what is the height of the second cone? provide
  47. math

    A right circular cone has a base diameter of 10 and a height of 18. A second right circular cone has a base diameter of 15. If the volume of the second cone is equal to the volume of the first cone, then what is the height of the second cone?
  48. math

    The Southeastern Conference (SEC), has fourteen universities, each of which fields a football team. The football teams are divided into two seven-team divisions. Each season, every team plays every other team in its division once, and also plays two teams
  49. math probability

    Three cards are drawn at random without replacement from a standard fifty-two card deck of playing cards. What is the probability that among the three cards there is a pair or three of a kind? please provide complete solution with explanations:)
  50. math

    Ben can run six miles in forty-eight minutes. If Luke can run twenty percent faster than Ben, how many minutes will Luke take to run nine miles? Please provide COMPLETE solutions with explanation please
  51. Math (check answers)

    1. Write the equation of a line in slope intercept form that is parallel to y = 3x - 2 and passes through the point (-2, 1) y = -3x-5? 2. Write the equation of the line that passes through (2, 1) and is perpendicular to 5x + y = 9. x + 5y = 3?
  52. Mathss

    Item 20 A bathtub is draining at a constant rate. After 2 minutes, it holds 28 gallons of water. Three minutes later, it holds 7 gallons of water. Write an equation that represents the number y of gallons of water in the tub after x minutes.
  53. Algebra: simplifying polynomials

    Please simplify the following. Please show solution if possible:) Question 1: (x^3 + x^2 - y^3 - y^2) / (x^2 - 2xy + y^2) Question 2: (u^6 + v^6 + 2u^3 • v^3) / [u^3 - v^3 + (u^2 • v) - (u • v^2)]
  54. History

    How are religion and culture connected? (Essay)
  55. Math

    Determine the number of factors of 5^x + 2•5^x+1. Choices: A) x B) x + 1 C) 2x D) 2x + 2 Please show solution:)
  56. Math

    Determine the number of factors of 5^x + 2•5^x+1. Choices: A) x B) x + 1 C) 2x D) 2x + 2 Please show solution:)
  57. math

    Find the 6th term in the expansion (x^2 - 1/x)^25 It is a Binomial Theorem problem and I am extremely confused. Please and thank you!
  58. Surface area of threaded hollow tube

    I have a question for calculating the surface area of a threaded cylinder,there are ten about 19 little threads in one inch, the rod is about 6 inches, the outer diameter is about 0.6 in and the inner diameter is 0.02. Each thread is 0.014 thick if that
  59. biology

    In order to maintain homeostasis, human cells must have a higher concentration of sodium ions outside the cell than inside the cell. In addition, the concentration of potassium ions must be higher inside the cell than outside the cell. Which of the
  60. English

    "The sun was shining on the sea, Shining with all his might: He did his very best to make The billows smooth and bright — And this was odd because it was The middle of the night. The moon was shining sulkily, Because she thought the sun Had got no
  61. Math geometry

    1) The base angles of an isosceles triangle are (50-x)^6 and (30x-12)^6 what is the vertex angle? 2) The area of a trapezoid is 52cm^2 if it's bases are 8 cm apart find the sum of their heights 3) What is the area of a circle inscribed inside an
  62. Math

    How many positive integers, not having the digit 1, can be formed if the product of all its digits is 33750. With solution pls:)
  63. Math

    K: 1) simplify: 1 - 1/2 + 1/4 - 1/8 + 1/16 - 1/32 2) Simplify: (1/2 - 1) - (1/3 - 1) + (1/4 -1) 3) In the proportion x^2 : 27 = 9 : x^3, what is x? 4) Between what two consecutive integers does cube root of -100 lie? 5) What is the area of a rectangle
  64. math

    Part of the road is to be on a parabolic curve given by a function of the form y = ax2 + bx + c where x and y are local co-ordinates. The road alignment must pass through the following 3 points:- x = 150m y = 190.650m x = 300m y = 611.450m x = 450m y =
  65. American Government

    I need help on my American Government quiz.. Not looking for answers but for someone to see if mine are right, and if not, to help me out. Thanks! 1. When categorizing the Executive Offices of the President, what can you assume when noting the number of
  66. Math

    Key:8 | 3= 8.3 what does 7|2 mean in the same stem and leaf plot
  67. Pre cal

    Determine all x-intercepts, vertical asymptotes, horizontal asymptotes, and removable discontinuities of f (x)=(x^2-x-6)/(x^3-4x).
  68. biology

    If the first child of a couple was without dimples, an recessive trait, what is the chance that the second child will be born without dimples? A) 100% B) 25% C) 50% D) Cannot be determined from the phenotype of the child
  69. math

    Calculate lim┬(n→∞)⁡〖(√((n^2+n))〗-n) justify your answer.
  70. math

    If lim┬(n→∞)⁡〖(x_n-x)/(x_n+x)〗=0, prove that lim┬(n→∞)⁡〖x_n 〗=x.
  71. advanced math

    A ladder is placed 4 ft from the side of a building. The top of the ladder must be 13 ft off the ground. What is the shortest ladder that will do the job? 4^2 + 13^2 = x^2 16+169=185^ =34,225
  72. physics

    some rocks melt at 1800farenheit. what is the temperature in the celsius scale ?
  73. physics

    The normal temperature of the human body is 37Celsius. a baby temperature is 98farenheit. DOes the baby a fever? Why?
  74. physics

    a 15kg rock falls from the top of a building 8.0 high. Find its PE and KE a.when at rest at the top of the building b. halfway down the ground c. when it reaches the ground d.speed when it reaches the ground
  75. physics

    a man pushes a lawnmower 50ft in 5s by exerting a force of 30lb at an angle of 53degrees with the horizon. find the work done and the average power expended in horsepower. Answer Please need help
  76. Absolute Inequalities

    4-|2x-3|
  77. Trig

    Can someone check my answers? Find # of triangles possible:
  78. Math

    Using numbers 2,3,5,10, 24 make the number 120
  79. science

    how are cohesion and adhesion properties of water linked to photosynthesis?
  80. algebra

    . On the reality TV show Last Man Standing, a package is thrown from a plane to the ocean below. The contestants must swim to the package to receive the “free pass” located inside the package. The path that the package follows can be modelled by the
  81. math

    Find the point in the xy plane which is equidistant from (1,1), (7,1), and (1,9). Please and thanks.
  82. physics

    For the next part, you will need to know that the position d of an object attached to a spring that oscillates with period T=1.0s is a sinusoidal function of time: d=kcos(2πt)d=kcos(2πt) for some constant k. Assume that the initial position of the object
  83. Math

    Find the least positive integer that leaves remainders of 1, 2 and 3 when divided by 3, 5 and 7 respectively.
  84. Math

    A game consists of drawing a number from 1-20. A player wins if the number drawn is either a prime number or a perfect square. What is the probability of winning the game?
  85. math

    A 4cm x 5cm x 7cm rectangular prism is painted on all faces. If the prism is cut into 1cm x 1cm x 1cm cubes, how many cubes do not have paint on any of its sides?
  86. science computer

    Write a program to read the names and age of 10 people and print the name of the oldest person.assume that there are no person of the same age.data is supplied in the following form:name,age,name,age
  87. esl

    is the statement, 'the blueberries tasted delicious.' a passive statement
  88. Math

    James and his friends rolled two fair number cubes 500 times and recorded the sum of the numbers shown on the cubes each time.On 42 of the trials the sum was 10.Which of these is most likely the probability that the sum of the numbers shown on the cubes is
  89. Probability

    Makoto and his friends rolled two fair number cubes 500 times and recorded the sum of the numbers shown on the cubes each time. On 42 of the trials the sum was 10. What will be the probability that the sum of the numbers shown on the cubes is 10 when two
  90. physics

    A long straight horizontal wire carries a current I = 4.80 A to the left. A positive 1.00 C charge moves to the right at a distance 5.00 m above the wire at constant speed v = 4500 m/s . What is the magnitude B of the magnetic field at the location of the
  91. math

    the high temp today was 62 degrees. when nighttime comes, the temp will drop 40 degrees. by 4 am the temp will drop an additional 40 degrees. what is the temp at 4 am?
  92. Math

    If m< 1=53 , what is m
  93. Physics

    Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 2.50 m. Two of the spheres have a mass of 4.40 kg each. The third sphere (mass unknown) is released from rest. Considering only the
  94. bio

    How many grams of MgCl2 do you need to make 2 L of a 0.2 M solution?
  95. Spanish

    What's the difference between "mensajero" and "repartidor"?
  96. math

    During a triathlon, Sharon swims 1/4 of the total route and cycles 3/5 of the remaining route. She runs the rest of the route. If she runs 3,600 meters, find the total distance if the route
  97. chemistry

    how many liters (at STP) of chlorine gas are required to produce .050L of hydrogen chloride gas?
  98. physics

    A particle of mass m = 0.3 kg is acted upon by a force so that its position vector, r(t)=2.0t^2(i)- 5.0t^2 (j) +t^2 (k) where t is in s. What is the (instantaneous) power delivered by this force to the particle at time t = 2.0s?
  99. Geometry

    To repair a roof that is 4 meters high, Mr. Russo leans a 5-meter ladder against the side of the building. To reach the roof, how far away from the building should he place the base of the ladder?
  100. math

    A researcher uses analysis of variance to test for mean differences among three treatments with a sample of n = 12 in each treatment. The F-ratio for this analysis would have what df values?

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6