Questions Asked on
November 25, 2010

  1. geometry

    A long-distance runner runs 5 miles south and then 8 miles east. How far is the runner from the starting point? Round your answer to thousandths

    asked by Anonymous
  2. Physics

    A 10.2 kg weather rocket generates a thrust of 200N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 500N/m, is anchored to the ground. a) Initially before the engine is ignited,

    asked by Alexandra
  3. statistics

    Suppose we have a set of body temperature with a mean of 97.6 degrees and a standard deviation of 0.3 degrees. between what two values should 99% of all temperatures lie?

    asked by Debora
  4. geometry

    A sphere has a 7 m diameter. What is its volume to the nearest hundredth?

    asked by eric
  5. math

    The shape of a patio is trapezoidal with a height of 10 ft and bases of 19 ft and 13 ft. What is the cost of outdoor carpeting to cover the patio if the carpeting costs $1.50 per ft2?

    asked by Anonymous
  6. physics

    A uniform metal rod of mass 100 kg and L (2.5m) is suspended from the side of the building. On the far end of a mass of 100 kg is hung by a rope, (distance L from a building). The rod is connected to the building on the left end by a pivot, (and a force F

    asked by Luke
  7. statistics

    given variables list them as independent (x) or as a dependent (y) I weight of child; prescription dosage II monthly commision; monthly sales II ability to concerntrate; level of fatique IV crop yield; rainfall

    asked by sandra
  8. math

    One card is selected from a deck of cards. Find the probability of selecting a black card or a queen.

    asked by Anonymous
  9. math

    One card is selected from a deck of cards. Find the probability of selecting a red card or a card less than 4 . (Note: The ace is considered a low card.)

    asked by Anonymous
  10. English

    1. You can't go there alone. 2. You are not able to go there alone. 3. You are not allowed to go there alone. (What does #1 mean? Does #1 mean #2 or #3?)

    asked by rfvv
  11. English

    1. May I come in? 2. Yes, you may. 3. No, you mayn't. (Can we say #3?) 4. The rumor may not be true. 5. The rumor mayn't be true. (Can we use the contracted form, 'mayn't'?)

    asked by rfvv
  12. chemistry

    I did an experiment with a sand sample which contains fine metallic aluminium and I wanted to measure how much of this metallic aluminium is in the sample. I used the NaOH solution in order to let react the aluminium and collect the H2. From the H2 amount

    asked by Leny
  13. chemistry

    why sugar dissolve in cooking oil

    asked by jason
  14. microeconomics

    The marketing division of a firm has measured demand for its product and reports that it is Q = 24 – P, where Q is units and P is price per unit in dollars. The cost is given in the table below. Complete the table and determine the profit-maximizing

    asked by Emma
  15. Statistics

    The weights of the fish in a certain lake are normally distributed with a mean of 11 lb and a standard deviation of 6. If 4 fish are randomly selected, what is the probability that the mean weight will be between 8.6 and 14.6 lb? A) 0.0968 B) 0.4032 C)

    asked by Sarah
  16. physics

    A block starts with a speed of 18.0 m/s and slides for a distance of 2.2 m down a 40° ramp (ìk = 0.43). What is its final speed? (m/s)

    asked by sandhu
  17. math

    what is the fourth methods in finding the GCF?

    asked by redalyn m nemenzo
  18. English

    Thank you very much for your corrections. Can you help me with these sentences, please? Thank you very much. 1)Despite the corruption among the clergy, the church played a fundamental role in the Middle Ages. Actually/In particular/As a matter of fact/In

    asked by Franco
  19. Physics

    Calculate the hang time of an athlete who jumps a vertical distance of 0.75 meter.

    asked by Laura
  20. Physics

    Kenny Klutz drops his physics book off his aunt's high rise balcony. It hits the ground below 1.5s later. a. With what speed does it hit? b. How high is the balcony? (Ignore the air drag)

    asked by Laura
  21. chemistry

    how can convert millilitter to gram for tetraiso propyl alcohol

    asked by pradee
  22. math

    in a paralleogram,if angle A=(2x+25)degree and angle B=(3x-5)degree,find the value of x and the measure of each angle of the parallelogram.

    asked by piyush
  23. English

    What is the best short story (online) to read?

    asked by Keziah
  24. Mathematics

    What is the best website to practice some free maths worksheets for grade 7 ? (NSW curriculum)

    asked by Jocelyn
  25. Geography

    Can you suggest some legends stories for South Sumatra?

    asked by Trisha
  26. math

    One card is selected from a deck of cards. Find the probability of selecting a red card or a heart

    asked by john
  27. ALGEBRA/ URGENT

    Doing something wrong. Write an equation of the line containing the given point and perpendicular to the given line. (4,5;)4x+y=8; I tried this. y = -4x+8. The slope is the reciprocal of -4 so 1/4. Then (y - y^1=m(x-x^1). y -4 = 1/4(x-4). I then multiplied

    asked by AMY
  28. 5th grade

    i have four sides.all opposite sides are parallel.i have no right angles.

    asked by Anonymous
  29. ALGEBRA/PLEASE HELP

    Write an equation of the line containing the given point and parallel to the given line. Express in y=mx+b. (-4, 9); 9x = 8y+5

    asked by AMY
  30. physics

    Posted by sandhu on Thursday, November 25, 2010 at 6:23am. A block starts with a speed of 18.0 m/s and slides for a distance of 2.2 m down a 40° ramp (ìk = 0.43). What is its final speed? (m/s) physics - drwls, Thursday, November 25, 2010 at 9:19am Final

    asked by sandhu
  31. math

    If a single fair die is rolled, find the probability of a 4 given that the number rolled is odd.

    asked by jo
  32. helping abused children

    what is the best statement about children who are abused

    asked by anna
  33. Electrical Switches

    What are the factors you consider when buying an electrical switch? I want to know what different people consider in order to obtain a good selection procedure. Thanks!

    asked by Claire
  34. College Physics II

    A typical gamma ray emitted from a nucleus during radioactive decay may have an energy of 736 keV. What is its wavelength? A microwave oven produces electromagnetic radiation at λ = 12.1 cm and produces a power of 778 W. Calculate the number of microwave

    asked by VJC
  35. stat

    A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the percentage of bulbs that can be expected to last the period of time. 77) At least 500

    asked by Anonymous
  36. College Physics II

    1) An electron moving with a speed of 2.84E+6 m/s has the same momentum as a photon. Calculate the de Broglie wavelength of the electron. 2) Calculate the wavelength of the photon.

    asked by VJC
  37. College Physics II

    What is the de Broglie wavelength of electrons with the following value of kinetic energy? 1.06 eV; What is the de Broglie wavelength of electrons with the following value of kinetic energy? 1.06 keV.

    asked by VJC
  38. English

    I need to find a set of poems for childhood, the subtopic being amusement. I can't really find any poems about children playing or something; Can I please get links to some? Thanks -MC

    asked by mysterychicken
  39. college

    In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping the forearm horizontal. This is possible because the triceps muscle applies an upward force Marrowbold perpendicular to the arm, as the drawing indicates.

    asked by Anonymous
  40. Physics

    A stone is tied to a string (length = 0.800 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the

    asked by Xavier
  41. Physics

    Computer-controlled display screens provide drivers in the Indianapolis 500 with a variety of information about how their cars are performing. For instance, as a car is going through a turn, a speed of 201 mi/h (89.847 m/s) and a centripetal acceleration

    asked by Xavier
  42. physics

    A basketball is thrown with a velocity of 10.5 ft/s downward from a height of 6.8 ft. The coefficient of restitution between the ball and the floor is 0.65. How high does the basketball go after its 2nd bounce?

    asked by sandhu
  43. Physics - Kinematics

    Qn: Ball 1 is launched up an inclined plane from the bottom of the plane with an initial speed that is the minimum speed for it just to reach the top of the plane. At the same moment as ball 1 is launched up the plane, Ball 2 is released from rest at the

    asked by Rod
  44. English

    Thank you very much for your corrections. Can you please help me check these sentences, please? 1) Don't write long-winded sentences.Your sentences must contain no more than two subordinate clauses. (or two subordinates at the most?) 2) You wondered off

    asked by Franco
  45. chemistry

    a 5.55g sample of a weak acid with ka=1.3*10^-4 was combined with 5.00ml of 6.00 M NAOH and the resulting solution was diluted to 750mL. The measured pH of the solution was 4.25. what is the molor mass of the weak acid. if used the formula

    asked by help
  46. Physics

    In a simulated head-on crash test, a car impacts a wall at 25 mi/h (40 km/h) and comes abruptly to rest. A 120 lb passenger dummy (with a mass of 55 kg), without a seat belt, is stopped by an air bag, which exerts a force on the dummy of 3000 lb. How long

    asked by Renee
  47. chemistry

    a 5.55g sample of a weak acid with ka=1.3*10^-4 was combined with 5.00ml of 6.00 M NAOH and the resulting solution was diluted to 750mL. The measured pH of the solution was 4.25. what is the molor mass of the weak acid. if used the formula

    asked by help
  48. Enviromental science

    Explain hom the nitrogen usen for makinp proteins in a lion's body traveled from the atmosphere to the lion?

    asked by Anonymous
  49. physics

    a geosynchronous satellite orbits at a distance from earth's center of about 6.6 earth radii and takes 24 h to go around once. what distance in meters does the satellite travel in one day? what is its orbital velocity in m /s?

    asked by robin
  50. physics

    a geosynchronous satellite orbits at a distance from earth's center of about 6.6 earth radii and takes 24 h to go around once. what distance in meters does the satellite travel in one day? what is its orbital velocity in m /s?

    asked by robin
  51. Physics

    The wave speed on a string is 146 m/s when the tension is 70.0 N. What tension will give a speed of 183 m/s?

    asked by Michael
  52. math

    Given ∠ABC, if m∠A=11x, ∠B = 3x + 4, and m∠C = x - 4, find the measure of each angle.

    asked by jim
  53. math

    On a bar graph the average cost of renting a studio in one city in years 1994 through 1998. The graph goes from 0 to 600. Year 94 is up to 400, year 95 is up to 500, year 96 is up to 500, year 97 is up to 525, and year 98 is up to 550. By what percentage

    asked by m
  54. english

    is it right when we say am confused or i am in confusion or confused ?

    asked by JJ
  55. government

    The argument over slavery pitted _____ States against _____ States.

    asked by Misael
  56. math

    let A=(3 x) (-2 -3) if A=A^-1, what is x? please show work so i can understand

    asked by jim
  57. math

    A square martix A is said to be idempotent if A=A^2. The only real numbers that are idempotent are 1 and 0, but this is not true for martices. Find a 2x2 idempotent other than 1 or 0.

    asked by jim
  58. english

    After completing the required readings for this week, discuss how you see the theme of creating art developing in the different stories and poems. What did you learn about the human impulse to create? Give examples from one of the stories and at least two

    asked by kim
  59. Chemistry

    If 18.0g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O how many grams of H2Oare produced

    asked by Mat
  60. chemistry

    Of the following solutions, which has the greatest buffering capacity? A) 0.821 M HF and 0.909 M NaF B) They are all buffer solutions and would all have the same capacity. C) 0.100 M HF and 0.217 M NaF D) 0.121 M HF and 0.667 M NaF E) 0.821 M HF and 0.217

    asked by jes
  61. Chemistry

    I have spent all afternoon (on Thanksgiving, no less) trying to figure out these post-lab questions. We had to produce a precipitate of a reaction of: 1) 1 ml 1M Na2SO4 + 9mL 1M CaCl2 Our result was .569g 2) 5 ml 1M Na2SO4 + 5 ml 1M CaCl2 Our result was

    asked by Stephanie
  62. psychology

    what is a psychology term for negative stress

    asked by Beca
  63. Physics

    What is the longest wavelength for standing sound waves in a 108.0 cm long tube that is open at both ends? What is the second longest wavelength? What is the third longest wavelength?

    asked by Mike
  64. com 156

    Explain the time management strategies you will use when writing a successful academic paper.What technique discussed in your us/101 course may help you manage your time when writing a paper?

    asked by Mia
  65. Physics

    A child rolls a ball on a level floor 3.4 m to another child. If the ball makes 9.0 revolutions, what is its diameter?

    asked by Kevin
  66. physics

    four objects with a positive charge of 1.0 x 10^-6 C, are placed at the corners of a 45 degree rhombus with sides of length 1.0 m. Calculate the magnitude of the net force on each charge.

    asked by Jill
  67. Physics

    A carbon dioxide laser is an infrared laser. A CO2 laser with a cavity length of 48.4 cm oscillates in the m=100,000.0 mode. 1. What is the wavelength of the laser beam? 2. What is the frequency of the laser beam?

    asked by Mike
  68. Biology

    Why doesn't blood clot in your blood?

    asked by Marie
  69. physics

    A basketball is thrown with a velocity of 10.5 ft/s downward from a height of 6.8 ft. The coefficient of restitution between the ball and the floor is 0.65. How high does the basketball go after its 2nd bounce?

    asked by sandhu
  70. Algebra

    Can someone help me on this problem I worked it and worked it and cannot figure it out?? ¨ö Z + ¨ü < ¨ú Z + 1/16

    asked by TRACY
  71. english grade 12 Important due on monday

    hey i need help .....how can i start the essay with the introduction ( containing my thesis) about the links between animal behavior and human behavior and i need also give examples from the book "life of Pi" thaks for everyone who help me out!!!!

    asked by tarkan
  72. Linear algebra

    find an equation of a plane containing a point (0,6,-2) and parallel to vector v1= (0,-3,0), v2=(0,9,-1) Help!

    asked by J Velji
  73. Anatomy/Health

    Other then caffeine what else can stimulate the central nervous system. And I don't mean like prescription drugs (eg. provigil, adder all) -Thank You

    asked by Reema
  74. chem

    calculate the number of moles of naI e50.0ml of a 0.400m

    asked by hylton
  75. IMPORTANT PHYSICS

    four objects, each with a positive charge of 1.0 x 10^-6 C, are placed at the corners of a 45 degree rhombus with sides of length 1.0 m. Calculate the magnitude of the net force on each charge.

    asked by Jill
  76. Science

    if it takes 20 newtons to accelerate an object weighing 15 kg 0.1 meters per second squared to the west what is the force of kinetic friction?

    asked by Abby
  77. physics

    Lazydog and his tractor (1330 kg) are pulling a trailer (530 kg) up a 7° hill. The trailer wheels roll freely. What is the magnitude of the force in the coupling between the tractor and trailer when their velocity is 8.7 m/s up the hill and they are

    asked by sandhu
  78. Chemistry

    C15H30 is a hydrocarbon that reacts with oxygen gas to give carbon dioxide and water. Calculate the mass of water (grams) formed when 859.64 grams of the hydrocarbon reacts with the oxygen gas. can someone please show me how this is done thanks

    asked by stacy
  79. Chemistry

    Given the following reaction: HCl(g) + SrO(s) ¨ SrCl2(s) + H2O Calculate the mass of HCl in grams that would react with 11.44 kg SrO.

    asked by andrea
  80. Probability & Odds

    What are some examples of probability and odds?

    asked by Michelle
  81. Chemistry

    The following reaction is used to produce tungsten(VI)oxide: WS3(s) + O2(g) ¨ WO3(s) + SO2(g) The WO3 is then heated and undergoes a decomposition reaction produce tungsten and oxygen gas. How many grams of tungsten could be produced if 39.27 grams of

    asked by andrea
  82. Algebra

    There is a table of values for the function f. They read: x=3, f(x)=4 x=4 f(x)=5 x=5 f(x)=6 x=6 f(x)=3 x=7 f(x)=5 x=8 f(x)=7 What is the value of 2f(5)-f(4)? I did this wrong obviously, but what I did was figure out the function of five from the table (4),

    asked by Benjamin
  83. Math

    What are some Quartile examples?

    asked by Michelle
  84. Math

    Solve the equation: 2^x^2-4x = (1/16)^x-4

    asked by James
  85. Math

    Solve the equation- e^x2+5x+6=1

    asked by DAVE
  86. Math

    Fine the size of the following matrix and its additive inverse matrix. Identify if it is a square, column, or row matrix: [ 2 -3 7 1 0 4 ]

    asked by Jeff
  87. Calculus - please help!

    Suppose that 0 < c < ¥ð/2. For what value of c is the area of the region enclosed by the curves y = cos x, y = cos(x - c), and x = 0 equal to the area of the region enclosed by the curves y = cos(x - c), x = ¥ð, and y = 0? i have no idea how to solve

    asked by K
  88. MATH

    Perform the operation for each equation, if there is a solution [4k -8y ] [5k+6y 2k+1] [6z - 3x] - [2z+5x z+4] [2k + 5a] [4k+6a 3a+2]

    asked by Jessica
  89. chemistry

    3CuCl2-2H2O + 2AL--> 3Cu +2AlCl3+6H2O what is the thepretical yield or copper? then what is the limiting reagent and excess reagent? whats the percentage yield?

    asked by Brianna
  90. Math

    The table below gives the educational attainment of the U.S. population 25 years and older since 1960. Males- Percentage with 4 years of highschool 1960 39.5% 1970 51.9% 1980 67.3% 1990 77.7% 2000 84.2% 2004 84.8% Percentage with 4 years of college or more

    asked by Jessica
  91. Physics

    Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle. .63m in front of the rear wheels and 2.3m behind the front wheels. The mass of the truck and its contents is 9155 kg. Find the

    asked by shai
  92. Chemistry

    how do you find delta h of 0.025 moles of water?

    asked by Faye
  93. physics

    In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping the forearm horizontal. This is possible because the triceps muscle applies an upward force perpendicular to the arm, as the drawing indicates. The forearm

    asked by shai
  94. physics

    A 1200-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1825-N crate hangs from the far end of the beam. (a) Using the data shown in the drawing, find the magnitude of the tension in the wire. (b)

    asked by shai