1. physics

    A circular disc of radius 'r' carries uniform charge distribution of surface charge density 'A'. If the disc lies on the z = 0 plane, with its axis along the z axis, find the electric field at a point P, along the z axis that passes through the center of
  2. Physics

    An Alaskan rescue plane drops a package of emergency rations to a stranded party of explorers. The plane is traveling horizontally at 40.0 m/s at a height of 100 m above the ground. a) How far horizontally from the dropping point does the package strike
  3. Phyiscs

    A lbock is given an intial speed of 4.0 s^-1 m up the 22 degree plane How far up the plane will it go ok I got this to be something like 2.2 about i understand this i need help on this how much time elapses before it returns to tis starting point? Ignore
  4. Chemistry

    Given data collected for a liquid. Equilibrium vapor pressure in torr: 4.6, 17.5, 149.4, 525.8 T in *C 0., 20., 60., 90. *Find T in K, Find 1/T in K-1 and 1n VP. *Then make a graph of 1n vapor pressure (1n VP) versus 1/T (where temperature is in units of
  5. Statistics

    Consider the following frequency distribution of daily sales for a shop that was kept for the months of November and December in 2013. Daily Sales ($) 60-70 70-80 80-90 90-100 100-110 110-120 Number of days 5 11 22 13 7 3 a. From this frequency
  6. English

    I had duplicate bookings on Cebu Pacific air. com because of a problem on the Internet. I'd like to cancel one booking. How can I cancel one booking. Only one adult and a baby are going to get on the air plane. And please let me know how to pay the plane
  7. algebra

    There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest
  8. math

    a plane traveled 3927 miles with the wind in 7 hours and 3437 miles against the wind in the same amount of time. Find the speed of the plane in still air and the speed of the wind.
  9. Algebra(please check my answers)

    **Fill in the appropriate vocab words that best fit into the sentences below** ~" Word Bank "~ A) central angle B) line of symmetry C) reflection D) transformation E) vertical angles F) transversal G) point H) circle
  10. Math

    Question 2 For the function f(x) = 3x2-2x-7, find f(2). Answer f(2) = 13 f(2) = 25 f(2) = 1 f(2) = 1/2 3 points Question 3 One day you work 3 hours and your boss gives you $22. Another day after working 4 hours your boss gives you $33. Yesterday after
  11. Physics

    Hi I have a question in Physics A block with mass 50kg is held on a slope. Ù friction coefficient = 0.35 between the plane and the block .. Planets angle v with the horizontal is 25 degrees. How far will the block slide down the plane in 5 seconds after
  12. Math

    How do i find the length of a projection of a vector A=3x+y+2z on the xy plane? and how do i find the unit vector in the xy plane that is perpendiculer to vector A?
  13. geometry

    if a plane leaves a horizontal at an angle of 60 degrees and at 1 minute reaches a point of 12 miles how fast is the plane going.... "reaches a point of 12 miles" is ambiguous. Do you mean 12 miles in the air (elevation), perpendicular to the ground? Or,
  14. physics

    1 A block of mass mb sits atop a at wooden plank of mass mp on a plane inclined an angle theta with respect to thehorizontal. The two are supported near the bottom of the plane by a spring of spring constant k that is in contactwith the plank but not the
  15. Algebra

    Question 1 Solve using the multiplication principle then graph. -15>-75 Question 2 Translate to an equality. Use the variable x. The number of people in the chess clubi less than or equal to 15. Question 3 Solve using the addition and multiplication
  16. MATH

    Assume the aptitude test score are normally distributed; mean is 140 points and standard deviation is 25 points. Within what interval centered at the mean will 95% of the scores lie?
  17. Accounting writen report

    Why is it important for a business to prepare a monthly bank reconillation statement? state two points (b)what should the internal auditor do about this? Name two points
  18. Strength of Materials

    A solid block resting on a horizontal surface needed a pull of 40N inclined at angle 25 degree to the plane just to move it, but a push of magnitude 200N inclined at the same angle to the plane just moved the block. What is the weight of the block, and the
  19. Trig application

    I have been working on this problem but I am not sure I am doing it right. During takeoff an airplane's angle of ascent is 18 degrees and its speed is 275 feet per second. A. Find the plane's altitude after 1 minute. B. How long will it take for the plane
  20. CALCULUS

    A plane, flying horizontally at an altitude of 1 km and a speed of 500 km/hr, passes directly over a radar station. find the rate in km/hr at which the distance from the plane to the station is changing when it is 2 km away from the radar station. Hint:
  21. Statistics

    You have a population that has a mean of 100 and a standard deviation of 15. You randomly draw 100 people out of this population and record the mean score. You repeat the process a large number of times recording the mean score for each sample you draw.
  22. math about to have a test over this please help!

    Unfortunately that is the entire problem.. Find and classify all local minima, local max, and saddle points of the function F(x,y)= -3x^2y-3xy^2+36xy There should be 3 saddle points and a maxima for sure! Please help me get the points. I can't do these
  23. Math

    A 100 point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response answer questions are worth 8 pints each. Write a system of linear equations that represents this situation, my answer is to
  24. Physics

    A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane as shown in the figure (Intro 1 figure) . Determine the speed of the block after it has
  25. Physics - pls help

    A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a battery with electric potential V as shown in the figure. A magnetic field ~B is now imposed. The acceleration of gravity is 9.8
  26. history

    id be very very grateful if someone could help me answer these questions. describe one way in which hitler broke the treaty of versailles in the years1933-1936 (worth 2 points) is it because Hitler agreed not to send his troops to the rhineland? briefly
  27. Behavioral Statistics

    You have a population that has a mean of 100 and a standard deviation of 15. You randomly draw 100 people out of this population and record the mean score. You repeat the process a large number of times recording the mean score for each sample you draw.
  28. math

    I don't get this I've been absent for 3 weeks On a math quiz Mary score 3 points for each of the 12 multiple-choice question she answered correctly and five points for each of the eight free response question she answered correctly. What was the total
  29. Math

    Explain how you can use a straightedge and a compass to construct an angle that is both congruent and adjacent to a given angle. I think the answer is that you use the straightedge to draw two parallel lines and then you draw a line that goes through them
  30. Statistics

    Assume that the points scored by the winning teams for all NCAA games follow a bell-shaped distribution. Using the mean of 76.5 and the standard deviation of 7, estimate the percentage of all NCAA games in which the winning team scores 84 or more points.
  31. Physics

    24. 0/3 points All Submissions Notes Question: Walker2 3.P.015. Question part Points Submissions 1 2 3 0/1 0/1 0/1 0/7 3/7 2/7 Total 0/3 A vector A has a magnitude of 49.0 m and points in a direction 20.0° below the x axis. A second vector, B, has a
  32. english 6th

    Please check for errors...THANKS Plural possessives Some careers were once mens' jobs. Any job can also be a woman's work. A firefighter's job is very dangerous. Tugboat pilot's training takes seven years. Dolores's dream is to be an astronaut. Everyone
  33. Physics

    A small plane moving at 207km/hr flying 50.0m above the ground chases a convertible moving at 105km/hr down a straight highway. The plane has a package to drop in the car’s back seat. Assuming the vehicles maintain their speed and altitude and there is
  34. vocab

    i need 3 more sentences using accursed and i cant think of anything please help!!!! It means hateful, doomed, or horrible. The substitute tried to teach us, the accursed, but the vocabulary didn't stick, and we failed the test. The accursed child died in
  35. math

    Ms. Davis asked her students to draw a picture describing their hobby, She asked them to use only 3 colors. Patrick has a box of crayons containing the colors red, blue, yellow, green, orange and purple. How many different ways can Patrick use his crayons
  36. math

    In a game of Incan basketball, A points are given for a free throw and B points are given for a field goal, where A and B are positive integers. If A=2 and B=5, then it is not possible for a team to score exactly 1 point. Nor is it possible to score
  37. math

    In a game of Incan basketball, A points are given for a free throw and B points are given for a field goal, where A and B are positive integers. If A=2 and B=5, then it is not possible for a team to score exactly 1 point. Nor is it possible to score
  38. math

    on 3 tests you earned grades of 88%,94%,and 90%. Each test was worth 150points. The final exam is worth 250 points. How many points do u need on the final exam to earn 93% of the total points on tests? What percent do you need on the final?
  39. Math

    Multiply 6,7, and 8 1/A touchdown in football is worth 6 points. How many points are 9 points worth? Answer,, 6*9=54 2/Dante walks 4 blocks to school and 4 blocks home . How many blocks does he walk in 3 days to and from school? Answer,, 4*4=16
  40. physique

    An air plane is flying due east relative to still air at a speed of 320 km/h. There is a 65 km/h wind blowing to ward the north, as measured by an observer on the ground. What is the velocity of the plane measured by the ground observer?
  41. math

    A plane is flying at 168 miles per hour with a heading of 43.5° from due north. The wind is blowing a constant 33 miles per hour at 133.5° from due north. Find the ground speed and true course of the plane.
  42. trig

    howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard
  43. trigonometry

    howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard
  44. science

    A person sits in a chair 3m from a wall on which hangs a plane mirror.Three meters directly behind him stands a woman 1.6m tall.What minimum height of plane mirror on the wall will enable him to see the woman's full height?
  45. Physics

    A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the
  46. Physics

    A square, 0.69 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 17.1 N lies in this plane and is applied to the square. What is the
  47. physics

    A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the
  48. physics

    A plane is flying horizontally with speed 244 m/s at a height 5670 m above the ground, when a package is thrown downward from the plane with a vertical speed v(initial) = 73 m/s. What horizontal distance is traveled by this package? The acceleration of
  49. physics

    A plane is flying horizontally with speed 244 m/s at a height 5670 m above the ground, when a package is thrown downward from the plane with a vertical speed v(initial) = 73 m/s. What horizontal distance is traveled by this package? The acceleration of
  50. Physics

    An object of mass m1 is placed on an inclined plane (angle theta above the horizontal) is connected by a string going over a pulley to a hanging object of mass m2. Determine the acceleration of the system if there is no friction between object 1 and the
  51. Physics

    What value of F can pull the 5.00 kg box at constant velocity up the incline plane if uk=0.25. uk is coefficient friction 5.00 is upward and the incline angle is 30 degrees Assume that the F force is applied parallel to the incline. F must equal the sum of
  52. geometry

    When I tried answering a problem then looked at the answer in the back of my book, I was confused how to get to the correct answer. The problem is there is a trapezoid on a coordinate plane that is centered at the origin. The coordinates of the points have
  53. math

    Sarah and Felipe were playing video games. Sarah scored 21,456 points, and Felipe scored 9,087 points. About how many points did Sarah and Felipe score altogether?
  54. math

    Sarah and Felipe were playing video games. Sarah scored 21,456 points, and Felipe scored 9,087 points. About how many points did Sarah and Felipe score altogether?
  55. Physics

    A plane is heading south with a velocity of 150 kilometers/hour. It experiences a tailwind with a velocity of 20 kilometers/hour. Find the resultant velocity of the plane
  56. physics

    A plane is heading south with a velocity of 150 kilometers/hour. It experiences a tailwind with a velocity of 20 kilometers/hour. Find the resultant velocity of the plane
  57. Physics

    Town A lies 20 km north of town B. Town C lies 13 km west of town A. A small plane flies directly from town B to town C. What is the displacement of the plane. Please explain how you got the answer
  58. Physics

    A square, 0.36 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. The axis is perpendicular to the plane of the square. A force of 14.4 N lies in this plane and is applied to the square. What is the
  59. Physics HELP!!

    A square, 0.74m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 26.8N lies in this plane and is applied to the square. What is the
  60. calculas

    A plane flying with a constant speed of 19 km/min passes over a ground radar station at an altitude of 4 km and climbs at an angle of 25 degrees. At what rate is the distance from the plane to the radar station increasing 3 minutes later? The distance is
  61. physics

    A 125-newton box rests on a plank 3.00 meters long, one end of which is 1.00 meters higher than the other end. Find the components of the force the box exerts Parallel to the inclined plane= Perpendicular to the inclined plane=
  62. Physics

    At the top of a frictionless inclined plane, a .50 kilogram block of ice possesses 6.0 joules of gravitational potential energy with respect to the bottom of the incline. After sliding halfway down the plane, the block's gravitational potential energy is?
  63. Physics

    An airplane needs to fly due south. The plane can fly at a speed of 720.0 km/hr in still air. If there is a wind blowing to the northeast at 70.0 km/hr, in what direction should the plane fly to maintain its heading of due south? How long will it take to
  64. physics

    1) what is the efficiency of a frictionless inclined plane? 2) how would you increase the efficiency pf an inclined plane?
  65. Geometry

    if plane angle DAB = (67 + 4x) degrees, than wht is plane angle DAB?
  66. math

    A plane P cuts a sphere O in a circle that has a diameter of 20. If the diameter of the sphere is 30 how far is the plane from O?
  67. math

    on a scale drawing, the length of a plane is 45 cm. The actual length of the plane is 90 m. What is the scale used?
  68. math

    Hi, I was working on my math homework and I was stumbling on these problems. I wanted to double check my answers that I have; I also could not answer 5. If vectors O(0,0,0), A(6,0,0), B(6,-sqrt(24), sqrt(12)), and C(0,-sqrt(24), sqrt(12)) form a square. 1)
  69. algebra

    _______________________________________ MATH133 Unit 1 Individual Project 2 A 1) The following graph shows the depreciation for the corporate airplane from 2006 to 2009. The plane was purchased new in 2006; therefore, x = 0 represents the year 2006. X –
  70. math

    4. In a backyard, there are two trees located at grid points A(-2,3) and B(4,-6). a) The family dog is walking through the backyard so that it is at all times twice as far from A as it is from B. Find the equation of the locus of the dog. Draw a graph that
  71. math

    A plane flies from new york to chicago (a distance of 1,600 miles) at 400 mph. Returning from Chicago to New York it flies into a headwind and averages only 320 mph. How many hours total was the plane in the air for the entire trip?
  72. Math

    My Question is : A plane with an air pf 192 miles per hour is headed on a bearing of 121 degrees. A north wind is blowing ( from north to south ) at 15.9 miles per hour. Find the ground speed and the actual bearing of the plane.
  73. algerbra

    A plane flies from new york to chicago (a distance of 1,600 miles) at 400 mph. Returning from Chicago to New York it flies into a headwind and averages only 320 mph. How many hours total was the plane in the air for the entire trip?
  74. Math 9

    Please help me on this question. Thanks! One pole measured 1.35m and the smaller pole measured 0.83m. They needed to be tied together. They were attached by overlapping the ends and tying them together. The length of the overlap was 12cm. What is the total
  75. Stats - Help!!!

    One month before a recall election, a poll of 500 Wisconsin voters showed that 46% planned to vote for the Democratic challenger Tom Barrett and 45% planned to vote for Republican Governor Scott Walker. Undecided voters constituted another 9%. The margin
  76. Statistics

    One month before a recall election, a poll of 500 Wisconsin voters showed that 46% planned to vote for the Democratic challenger Tom Barrett and 45% planned to vote for Republican Governor Scott Walker. Undecided voters constituted another 9%. The margin
  77. science

    Fill in the blank with the word or phrase that best completes the statement or answers the question. 14. The scientific name for a plant that reproduces with flowers is a(n) (1 point) 15. At certain times of the year, the male sage grouse can be seen
  78. MATH

    In the game of Incan basketball, a points are given for a free throw and b points are given for a field goal, where a and b are positive integers. If a = 2 and b = 5, then it is not possible for a team to score exactly 1 point. Nor is it possible to score
  79. calc

    i need to sketch a graph that satisfies all of these conditions: - it is defined for all #s except 0 - f(1) = 0 f(2)=2 f(3)=1 - f'(2)=0 f''(3)=0 - f''(x)<0 when x<0 and when 0<x<3 - f''(x)>0 when x>3 - lim x->0 = -inf - lim x->inf =
  80. English

    Holidays are important to everyone. They boost your spirits. a. Correct b. Shift in person I would say it is correct, but then again isn't Everyone a singular prnoun? 2. After the teacher collected our essays, she told the students that she would return
  81. Algebra word problem

    There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest
  82. Physics

    A plane is flying horizontally with speed 251 m/s at a height 2180 m above the ground, a package is thrown downward from the plane with a vertical speed v1 = 80 m/s. What is the magnitude of the total velocity of the package at the moment it is thrown as
  83. Pre-Cal

    An airplane's velocity with respect to the air is 580 miles per hour, and it is heading N 60 degrees W. The wind, at the altitude of the plane, is from the southwest and has a velocity of 60 miles per hour. What is the true direction of the plane, and what
  84. physics

    A jet plane is flying horizontally with a speed of 500 m/s over a hill that slopes upward with a 3% grade (i.e., the "rise" is 3% of the "run"). What is the component of the plane's velocity perpendicular to the ground? (Assume the +x-direction is up along
  85. accounting

    I continue getting the wrong totals can you please help me solve this problem and give me the correct formula and Journal entries. On Jan 1 2004 Brown Airways purchased an airplane for 34,450,000. Brown airways expect the plane to remain useful for 6 years
  86. English

    supporting details may refer to secondary points which may help to clarify choices are :points or all information of a paragraph, another name of main idea or the topic sentence? plz help me
  87. English, Need Help. Thanks in advance.

    What does this mean? And look at my points to see if I'm on the right track or not (this is from Hamlet). "Identify and explain how Act 3 Scene i develops Ophelia's character." Points: Innocent, Pushover, Emotional
  88. Perimeter and Area

    The set of points (2, 3), (9, 3), (9, 2), and (2, 2) identifies the vertices of a quadrilateral. Which is the most specific description to tell which figure the points form? parallelogram square rectangle trapezoid
  89. Pre-Calculus

    After leaving an airport, a plane flies for 1.75h at a speed of 200km/h on a course of 100 degrees. The plane then flies for 2 hours at a speed of 250km/h on a course of 40 degrees. At this time, how far from the airport is the planee?
  90. Science

    the pilot of a private plane flies 20km in a direction 60 degrees north of east,then 30km straight east,then 10km straight north.how far and in what direction is the plane from the starting point
  91. Math

    In still air a plane has air speed 300km/h and flies on a bearing of 110 degrees. If the wind is blowing at a speed of 100km/h from a bearing of 60 degrees, find the actual velocity of the plane.
  92. trig

    a plane takes off at 10.00am from an airfield, and flies at 120km/h on a bearing of N35W. A second plane takes off at 10.05am from the same airfield, and flies on a bearing of S80E at a speed of 90km/h. How far apart are the planes at 10.25am?
  93. Trigonometry

    A plane flew 150 miles on a course of 220 degrees and then 130 miles on a course of 130 degrees. Then the plane returned to it's starting point via the shortest route possible. Find that shortest distance.
  94. physics help

    A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 200 above the glacier at a speed of 200. How far short of the target should it drop the package?
  95. Calculus and vectors

    A plane, π, has 3x-5z+3=0 as its Cartesian equation. Determine the Cartesian equation of a plane that is perpendicular to π and contains the point P(2,9,-3)
  96. Tobin School

    the plane goes 700 miles an hour . The car goes 50 miles an hour . How many times faster than the car is the plane .
  97. Math...HELP i dont understand this problem!

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional
  98. geometry

    the points K and M are points of tangency. Find the value of x. 4x+7=7x-8
  99. pyschology

    I need an idea to get started please help me Thanks 1.First, choose two personality disorders: I'll choose Paranoid or you can choose one for me please •Schizoid •Paranoid •Antisocial •Borderline •Histrionic •Narcissistic •Avoidant
  100. Physics

    A Boeing 747 can travel up to 254m/s. The pilot must travel from Vancouver to Calgary, which is located 3.0 x 10^2 km [N] and 7.0 x 10^2 km [E]. There is a strong wind blowing at 50.0 m/s [SE] A) determine the direction that the plane must travel to reach