1. Physics

    A box with a mass of 4.0kg is sitting on a plane angled at 60degrees above the horizontal. The coefficient of friction between the box and the plane is 0.3. What is the horizontally applied force necessary to stop the box from sliding down the ramp?
  2. Calculus

    Function is y=x2 . Take three points, x=2, x=3, x=4. Approximate this function at these three points for a deviation Δx =0.1. Which of the three points does the approximation works best? Which point does it works worst?
  3. math check answer

    1. Which line models the data points better and why? blue, because the data points are all close to the line red, because it goes through one of the points i think that is A
  4. Math

    Teri scored 64 points in the first 8 basketball games she played in. She scored the same number of points in each game. How many points did she score in each game?
  5. algebra

    plot points (0,6) and (-3,5) plot points (0,0) and (3,1) how do i graph Get some graph paper. Label the x and y axes. For (0,6), place a mark where x = 0 and y=6. Do simillarly for the other points.
  6. Math

    A piece of a broken circular gear is brought into a metal shop so that a replacement can be built. A ruler is placed across two points on the rim, and the length of the chord is found to be 14 inches. The distance from the midpoint of this chord to the
  7. Vectors and matrices

    A triangle T has a vortices (3,-1),(5,-1) and (5,-4).draw and label the traingle T. M is the matrix (1 0) ( 0 -1). The triangle T is mapped on triangle T by the means of transformations M,draw and label T on your diagram. T has a vertices at (3,1),(5,1)
  8. mechanics (calculating plane speed and climb angle

    Two radar stations A and B, are separated by the distance a = 500 m, track the plane C by recording the angles α and β at 1-second intervals. If three successive readings are t (s) 9 10 11 α 54.80◦ 54.06◦ 53.34◦ β
  9. Math

    Multiplying a vector by a scalar results in: a) a scalar b) a perpendicular vector c) a collinear vector c) a parallel scalar
  10. college

    I have initial and final gauge length and diameter and also have max load. Now i have to draw stress strain diagram. I know how to draw that graph but i a not provided with failure load or yield load so i am not sure how to graph. Appreciate any help.
  11. maths --plse help me..

    without using set square or protacter construct 1. triangle A BC WITH AB = 5.5 CM , BC = 3.2 CM CA = 4.8 CM 2. DRAW LOCUS OF A POINT WHICH MOVES SO THAT IT IS ALWAYS A DISTANCE OF 2.5 CM FROM B. 3. DRAW LOCUS OF POINT SO THAT IT IS EQUIDISTANT FROM BC & CA
  12. PHYSICS

    The average velocity of a plane was 600 km/h [N]. How long did it take the plane to travel 120 km? A. 0.2 min B. 5 min C. 12 min D. 5.0 h
  13. need help1 what function to use? math

    An airplane approaches a runway at a 3 degree angle of depresssion. If the plane is flying at 30,000 ft., find the ground distance from the airport to the point directly below the plane when the pilot begins the descent. Round your answer to the nearest
  14. geometry

    The figure shows a partially completed set of steps to construct figure PQRS. The next step is to construct side RS of the figure so that side RS is congruent to side PQ and angle PQR is congruent to angle SRN. The chart shows the steps each of the four
  15. Polytechnic soko nigeria

    A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20
  16. Physics

    An airplane flies at a constant speed in a straight line. A bale of hay is dropped from the bottom of the plane to some cattle in a snowstorm. When the bale hits the ground, where is the plane? (Ignore air resistance) Explain your answer!
  17. mechanics

    A projectile is launched from the origin with a speed of 2 ms−1 at the angle of 60∘ from the horizontal. Assume that ground to be flat and plane of trajectory to be x-y plane with x-axis along horizontal. The radial and tangential components of
  18. Polytechnic soko nigeria

    A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20
  19. trig

    a plane is flying with airspeed of 140 mph and heading 280 degrees. The wind currents are running at 20mph at 260 degrees clockwise from due north. Find the true course and ground speed of the plane.
  20. mechanics of machines

    A body of weight 500N is lying on a rough plane inclined at angle 3.2 with the horizontal. It is supported by an effort p, parallel to the plane. Determine the minimum and maximum value of P, for which the equilibrium can exist if the angle of friction is
  21. Fundamentals of Electricity

    The box-like Gaussian surface of Fig. 1 encloses a net charge of +24.0ε0 C and lies in an electric field given by N/C, with x and z in meters and b a constant. The bottom face is in the xz plane; the top face is in the horizontal plane passing through
  22. Physics

    A block weighing 70.7 N rests on a plane inclined at 21.6° to the horizontal. The coefficient of the static and kinetic frictions are 0.23 and 0.12 respectively. What is the minimum magnitude of the force F, parallel to the plane, that will prevent the
  23. physics

    During takeoff, an airplane, climbs with a speed of 180 m/s at an angle of 34º above the horizontal. The sun is shining directly overhead. How fast is the shadow of the plane moving along the ground? (That is, what is the magnitude of the horizontal
  24. Calculus

    A fully plane has a constant acceleration while moving down a runaway. the plane requires .7 mile of runaway and a speed of 160 miles per hour in order to lift off. what is the planes accelearation? i need the formula cause the one i have doesnt work cause
  25. geometry

    Ray Hf bisects with angle Ehg.. Which conclusion is not valid a. E,F and G are coplanar b. angle EHF is congruent with angle FHG c. Line Eh is congruent to line HG d. m/Ehf is congruent to m/FHG
  26. Math

    Please answer ! Answer everything! A right rectangular prism is intersected by a horizontal plane and a vertical plane. The cross section formed by the horizontal plane and the prism is a rectangle with dimensions 8 inches and 12 inches. The cross section
  27. MATH

    1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute <H and the shorter diagonal. 3.Scalene right triangle SCA with midpointsL<M and N on SC, CA, and SA, respecitively. 4.Trapeoziod TRAP with TR|| A[, RE PA and P,E and A
  28. math

    Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that the last letter drawn is a B? B C B B B B Set 1
  29. math

    Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that the last letter drawn is a B? B C B B B B Set 1
  30. Phys1402

    Object A of charge 5e-6 C is located at the origin of a coordinate plane. Object B of charge 3e-6 C is located on the x-axis of a coordinate plane at x = 0.002 m. Object C of charge 3e-6 C is located on the y-axis of a coordinate plane at y = 0.001 m.
  31. physics

    A solid uniform sphere is released from the top of an inclined plane .25 m tall. the sphere rolls down the plane without slipping and there is no energy lost from friction. What is the translational speed of the sphere at the bottom of the incline?
  32. newton's law

    A block of mass M is projected up a frictionless inclined plane with a speed VO. The angle of incline is given as theta. a. How far up the plane does it go? b. How much time does it take to get there? I was stuck after Fg(cos(theta+90)= Ma_x
  33. Calc

    A plane flying horizontally at an altitude of 1 mi and a speed of 510 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest
  34. Cal

    A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest
  35. Trigonometry

    From an observation tower that overlooks a small lake, the angles of depression of point A, on one side of the lake, and point B, on the opposite side of the lake are, 7degrees and 13degrees, respectively. The points and the tower are in the same vertical
  36. English

    1. I (can) (do) 20 (push-ups). [right Answer: 4 points] 2. I (can) (do) 20 (up and down with arms). [ ___ points] ------------------- #1 is a correct sentence. The students who only filled in the first two parentheses got one point as a partial point. [can
  37. math 1

    Sarah calculated the points she earned on her test. Sarah thought she earned 95 points but the teacher told her she actually only scored 85 points. What was Sarah's percent error. Round to the nearest tenth.
  38. physics

    A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the
  39. Physics

    A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the
  40. Physics

    A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the
  41. Science...pyramids

    How do you draw a pyramid of numbers (in proper scale)? and how do you draw a pyramid of biomass in scale?
  42. MATH

    if you draw two cards from a deck of 52 cards without replacing the first card, what is the probability that you will draw a spade and another spade?
  43. Math

    In a basketball game Maria scored 3 times as many points as Holly. In the next game, Maria scored 7 fewer points than she did in the first game, while Holly scored 9 more points than she did in the first game. If they scored the same number of points in
  44. 4th grade

    At a school fair, you can toss coins into cups to earn points. If you earn 100 points or more you win a prize. The cups are worth 15, 20, 25, and 30 points. If you get 4 tosses and can stop whenever you reach 100 points, what are all the possible
  45. Math~Coordinate Planes

    On a coordinate plane, how are the locations of the points (3, -1) and (-3, 1) related? A. locations unrelated B. reflection across the x-axis C. reflection across both axes* D. reflection across the y-axis
  46. Chemistry

    Will someone please help me? I had a question and i answered it, but i coudn't draw a picture for it. Can some help me draw a picture for it or tell me how to draw it step by step. Thank you. The nucleus is made up of protons and neutrons. Protons and
  47. Math

    In the same carnival there is a similar game of chance. The game involves a small bag containing 30 marbles where 12 are green and 8 are yellow and the rest are brown. You win 20 pesos if you are able to draw green marble and you win 10 pesos if you are
  48. math

    4. For Questions 4-7, use the following data: The number of file conversions performed by a processor per day for 10 days was: 15, 27, 25, 28, 30, 31, 22, 25, 27, 29 What is the arithmetic mean of the data? (Points: 5) 20.7 25.9 27 29 5. What is the
  49. Math (Probability)

    Mrs. Ana is holding a logic contest. The 13 students who are participating randomly draw cards that are numbered with consecutive integers from 1 to 13. >The student who draws number 1 will be the host. >The students who draw the other odd numbers
  50. Maths

    find the points of intersection of (a) the tangents to the graph of y=2+2x-x^2 at the points where the graph meets the x-axis. (b) the normals to the graph at these points. (c) find the area of the triangle created from the two intersections and the point
  51. Calculus,Stationary Points,First derivative test

    Good afternoon, I need a bit of help. So ive got my first derivative which is 6x^2-6x-12 and the stationary points ive found are x=-1 and x=2 at which points the value of the derivative is zero. So im attempting to classify the points. From my derivative
  52. math

    In a test, the average was 74 points/100 points. After the test, three of students relocate. Then the average was 75 points/100. The circumstances of the students were 6:5:3. How many points did the three students have? I know the answere is 45, 75 and 90,
  53. math

    In a test, the average was 74 points/100 points. After the test, three of students relocate. Then the average was 75 points/100. The circumstances of the students were 6:5:3. How many points did the three students have? I know the answere is 45, 75 and 90,
  54. Math

    David is playing a trivia game where he gains points for correct answers and loses points for incorrect answers. At the start of round 3 his score is −1500 points. During round 3 he answered five 1000 point questions correctly and three 500 points
  55. Geometry

    Myles was asked to draw a triangle xyz and then dilate it using the origin aa the center of dilation and a scale factor of 0.75.he thinks adding 0.75 units to the coordinates of the vertices of xyz will help him draw the dilated image. Explain why miles is
  56. Statics

    a solid hemisphere of weight W rests in limiting equilibrium with its curved surface on a rough inclined plane and its plane face is kept horizontal by a weight W1 attached to a point in its rim. prove that the coefficient of friction is
  57. AP physics

    A rescue plane wants to drop supplies to isolated mountains climbers on Rocky ridge 235m below. If the plane is traveling horizontally with a speed of 250 km/h (69.4m/s), how far in advance of the recipients (horizontal distance) must the good be dropped?
  58. math

    The following are the amounts (to the nearest dollar) paid by 25 students for textbooks during the fall term: a. Draw an ordered stem and leaf plot to illustrate the data. b. Construct a grouped frequency table for the data, starting the first class at
  59. English

    11. How does Moishe the Beadle’s experience in the Galician forest change him? Your response should be at least one paragraph long. (2 points) 12. What is the irony of Elie’s and his neighbors' joy in leaving the hot ghetto? Your response should be at
  60. Maxima, Stationary Points

    Long shot but does anyone have experience of using Maxima (maths program) for finding stationary points. My user guide offers no help, ive tried to manipulate the following derivative to find the stationary points however its not proving helpful.
  61. physics

    A jet plane is flying with a constant speed along a straight line, at an angle of 25.5° above the horizontal, as Figure 4.30a indicates. The plane has weight vector W whose magnitude is 86500 N, and its engines provide a forward thrust vector T of 103000
  62. physics

    A block of mass m takes time t to slide down on a smooth inclined plane of angle of inclination theta and height h. If same block slids down on a rough inclined plane of same angle of inclination and some height and takes time n times of initial value then
  63. math

    HISTORY TEST You take a history test that has 100 regular points and 8 bonus points. You get a score of 91, which includes 4 bonus points. Let x represent the score you would have without the bonus points. Which equation represents this solution? Solve the
  64. Art - Drawing

    Can you give me some tips on how to draw graffiti (anything really)? I am good with drawing something but the thing is I have to look a picture to draw it. Its almost as if I don't have enough imagination. But since that's how I've been drawing, tips
  65. Physics

    A jetliner is moving at a speed of 270 m/s. The vertical component of the plane's velocity is 39.8 m/s. Determine the magnitude of the horizontal component of the plane's velocity. Can someone please solve this?
  66. simple machines

    A box with a force of 100N is pushed up an inclined plane. It takes a force os 75N to push it to the top. What is the efficiency of the inclined plane?
  67. Math

    Use lagrange multipliers to find the point on the plane x-2y 3z-14=0 that is closet to the origin?(try and minimize the square of the distance of a point (x,y,z) to the origin subject to the constraint that is on the plane) Help me please!
  68. Math

    Find all values of p such that 2(x+4)(x-2p) has a minimum value of -18? I know x=-4 but I do not know that helps us. Please explain in steps! The temperature of a point (x,y) in the plane is given by the expression x^2-y^2-4x+2y. What is the temperature of
  69. Physics

    A jetliner is moving at a speed of 235 m/s. The vertical component of the plane's velocity is 34.3 m/s. Determine the magnitude of the horizontal component of the plane's velocity. _____________m/s
  70. Math

    one plane at 520 feet is ascending at the rate of 40 ft per minute, while another plane at 3800 ft is descending at the rate of 120 ft per minute. How long will it take the 2 planes to be at the same altitude?
  71. calculus

    A plane flying horizontally at an altitude of 1 mi and a speed of 560 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 2 mi away from the station. (Round your answer to
  72. math cal

    A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest
  73. trigonometry

    A plane is headed due west with an air speed of 300 mph. The wind is from the north at 80 mph. Find the bearing for the course and the ground speed of the plane.
  74. Physics

    You are a passenger on a jetliner that is flying at a constant velocity. You get up from you seat and walk toward the front of the plane. As, a result, your forward momentum increases. What (if anything) happens to the forward momentum of the plane?
  75. Physics

    An airplane is flying with a velocity of v0 = 260 m/s at an angle of 30.0° with the horizontal. When the altitude of the plane is h = 2.0 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle ?
  76. Trig

    If a plane takes off on runway 31 (N 31o W) and flies 4 miles, then makes a right (90o) turn and flies 11 miles, what bearing will the traffic controller use to locate the plane?
  77. physics

    An object is on a frictionless inclined plane. The plane is inclined at an angle of 16.9 degrees with the horizontal. Using the accerlation due gravity(9.8m/s squared),what is the magnitude of object's acceleration?
  78. physics

    A plane is heading to a destination 1750 km due north at 175 km/h in a westward wind blowing 25 km/h. At what angle from north should the plane be oriented so that it reaches its destination?
  79. Algebra II

    A plane flies with a heading of 48 degrees NW and an air speed of 584 km/h. It is driven from its course by a wind of 58.0 km/h from 12.0 degrees SE. Find the ground speed and the drift angle of the plane.
  80. Trig

    Please help with this question: A plane travels a distance of 140 km due west of Vancouver International Airport. It then travels 60 km at a bearing of 340 degrees. How far from the Airport is the plane? Thank you for all your help.
  81. science

    a body with a mass of 40kg is at the point of sliding down an incline plane of 20degrees.calculate the external force required to pull the body up the incline plane
  82. algebra 2 :(

    The distribution of jamal's high school grades by percentage of course credits is A=70%; b=20%; c=10%. What is jamal's grade point average if each a is worth 4 points; each b is worth 3 points; and each c is worth 2 points?
  83. Physics

    An airplane is heading 20degree north flying at 200km/hr relative to the air. Simultaneously the wind carries the plane 10degree, east of south at the speed of 60km/hr. (a) find the velocity of the plane relative to the ground. (b) find the component (east
  84. English expression

    A. Listen carefully, and choose the picture suitable for the content of the dialogue. B. Listen carefully, and draw a line to find out who teaches which subject. Look at the two people on the left, and the textbooks on the right. Draw a line between while
  85. science

    If an airplane directly north at 2000 km/hr and there are 50 mph/hr winds blowing west. whis is the actual path of the plane seen from someone on the ground? What is the ground speed of the plane in mph?
  86. physics

    An object is on a frictionless inclined plane. The plane is inclined at an angle of 25.5 degrees with the horizontal. Using the accerlation due gravity from your reference table. What is the magnitude of object's acceleration?
  87. algebra

    A plane can fly a certain distance in 6 hours with the wind, but can return only three-fourths the distance in the same time. If the speed of the plane in still air is 200 km per hour, find the velocity of the wind.
  88. math

    A jet plane traveling at 500 mph overtakes a propeller plane traveling at 200 mph that had a 2-hour head start. How far from the starting point are the plains?
  89. Physics

    A pilot wants to fly a plane directly eastward when the wind is from the north at 55 miles per hour. if the air speed is 230 miles per hour, in what direction must the plane be headed?
  90. Precalcuse

    A plane is headed N40E at 400 mph.there is a wind speed of 50mph from the south.if no correction is made for the wind,what are the final direction and ground speed of the plane?
  91. Physics

    A plane starts from rest at the end of a runway and requires 200.0 km/h for takeoff . If it takes 30.0 a to reach takeoff speed, what acceleration must the plane's engines provide to get off the runway ?
  92. Physics

    A jetliner is moving at a speed of 270 m/s. The vertical component of the plane's velocity is 39.8 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
  93. PHYSICS

    A jetliner is moving at a speed of 305 m/s. The vertical component of the plane's velocity is 47.5 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
  94. Trig

    A plane flies 1.3 hr at 100mph on a bearing of N40degreesE. It then turns and flies 1.5hr at the same speed on a bearing of S50degreesE. How far is the plane from its starting point?
  95. physics

    a crate is pushed to the top of a frictionless inclined plane 15 m long with a force of 25 N. If the crate weighs 125 N, how high is the inclined plane? 0.5 m 1 m 3 m or 5 m
  96. Physics

    A jetliner is moving at a speed of 220 m/s. The vertical component of the plane's velocity is 36.0 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
  97. Algebra 1

    An airplane travels for seven hours with a 60 mph tailwind on the return trip against the same wind it took the plane nine hours find the speed of the plane with no wind.
  98. Physics 1

    A jetliner is moving at a speed of 305 m/s. The vertical component of the plane's velocity is 38.9 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
  99. Physics

    A jetliner is moving at a speed of 220 m/s. The vertical component of the plane's velocity is 36.0 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
  100. out of curiosity...

    does anyone know what is the pathway used to board an airplane? the bridge-like pathway that connects to the doors of the plane and are used to board and go off the plane? answer would be greatly appreciated..tnx :)