Problem2-AFor A=-I+2j +5k and B=2j-3k,find: a) The dot productA.B b) The angle between the A and B

105,436 results
  1. calculus

    A searchlight rotates at a rate of 3 revolutions per minute. The beam hits a wall located 7 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle \theta between the

  2. Calculus

    A searchlight rotates at a rate of 2 revolutions per minute. The beam hits a wall located 8 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

  3. calculus

    A searchlight rotates at a rate of 4 revolutions per minute.? The beam hits a wall located 13 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

  4. ap chem

    consider the molecules PF3 and PF5. b]is the PF3 molecule polar or is it nonpolar. explain C] on the basis of bonding principles, predict whether each of the following compounds exists. In each case explain your prediction. (i) NF5 (ii) AsF5 2. explain why

  5. physics

    When the thigh is fractured, the patient's leg must be kept under traction. One method of doing so is a variation on the Russell traction apparatus. (See the figure.) Please place period in place of (dot) oi53(dot)tinypic(dot)com/2a0b7yx(dot)jpg If the

  6. Math

    For questions 1-10, match each inequality with its corresponding solution by entering the capital letter only. For example, type "A" only. A. x-1>5 B.2x≤6 C.x-7>-4 D.-2x -3, open dot at -3 and shaded to the right 4.x 3, open dot at 3 and shaded to the

  7. Physics

    Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the table is 0.345. The objects have masses of m1 = 3.25 kg, m2 = 1.25 kg, and m3 = 2.50 kg, and the pulleys are frictionless. The

  8. Vectors: Dot product

    Given a and b unit vectors if |a+b|=square root 3, determine (2a-5b)dot(b+3a) First I foiled the whole thing: =2(a dot b)+ 6 (a dot a) - 5(b dpt b) -15(a dot b) =-13(a dot b) + 6(a dot a) - 5(b dot b) =-13(1)(1)+6-5 =-13+1 =-12 Textbook answer is -11/2 I

  9. Physics

    Let F1=10i-15j-20k,F2=6i+8j-12k. Find their dot product and the angle between those two vectors

  10. Math

    You plan to go from Portland to Tucson. Let x be the distance in miles of any flight between Portland and Tucson. Can you write an inequality that represents the mileage of any route between Portland and Tucson? oi41 dot tinypic dot com/29dbjm0 dot jpg I

  11. math calculus

    if i,j,k are the standard unit basic vectors, in 3 space, determine the value of k dot(j-3k)+(i-4k) dot (i-4k)-8 |i cross -k| (Simplify without using components)

  12. Limiting Reagents

    in the synthesis of FeC2O4 (dot) 2H2O, which reagent would be the limiting reagent? FeSO4(NH4)2SO4 (dot) 6H2O - 2.68g. H2C2O4 (dot) 2H2O - 1.99g. I just want to know how the H2Os would effect finding the limiting reagent. As in do they change the ratio?

  13. Physics

    The drawing shows a plane diving towards the ground and then climbing back upward. During each of these motions, the lift force L acts perpendicular to the dispacement s, which has the same magnitude of 2.8 103 m in each case. The engines of the plane

  14. Science (Biology)

    Use your knowledge of photosynthesis to explain what is happening in the following graphs. 67(dot)media(dot)tumblr(dot)com /d99a0dd856c87dfc21b9314f89019994/tumblr_o7ltp1unLS1tt1il6o1_1280.jpg

  15. Physics

    Find the magnitude of the dot product of the two vectors B=6i+j+2k, D=-1+3j. What is the angle between B and D

  16. calculus

    Find two unit vectors that make an angle of 60° with v = ‹3, 4›. Give your answers correct to three decimal places. I'm not sure what to do here; I believe that I use to definition of a dot product (or maybe cross product) with relation to the trig

  17. Chemistry

    Where Can i find drawing of the electron dot structure of the following atoms. Argon,Calcium,Iodine www.webelements.com will give you the electron configuration. Scroll down the menu on the left side. The electron dot structure is done this way: Write the

  18. Conditional Probability

    Please refer to the illustration at screenshotsfirefoxcom/jZoizoMJf8a3H0UZ/ds055uzetaobbcloudfrontnet to help answer the following question: Zeb's coin box contains 8 fair, standard coins (heads and tails) and 1 coin which has heads on both sides. He

  19. calculus

    A searchlight rotates at a rate of 4 revolutions per minute.? The beam hits a wall located 13 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

  20. Math

    Jena is comparing prices of different cell phones. She made a dot plot to show the prices. How can she find the most common price? A) Find the dot all the way to the right. B) Find the dot all the way to the left. C) Find the shortest stack of dots. D)

  21. jane

    1. a centripetal-acceleration addict rides in uniform circular motion with period T=2s and radius r=3m. at t1 his acceleration vector= 6(m/s^2)i + -4(m/s^2)j. At that instant, what are the values of vector b (dot) vector a and vector r (dot) vector a All I

  22. calculus

    a laser printer is placed on a platform that rotates at a rate of 20rev/min. the beam hits a wall 8m away producing a dot of light that moves horizontally along the wall. let tetabe the angle between the bean and producing the line through the search light

  23. MATH PRE-ALGEBRA

    Explain how to know wheather the endpoint of the graph of an inequality should be a closed dot or an open dot.

  24. Vectors

    Show that if a, b, c are in V3, then (a x b) dot [(bxc)x(cxa]) = [a dot (b x c)]^2 I don't know what properties to use

  25. Vectors

    if |x|=2 and |y|=5, determine the dot product between x-2y and x+3y if the angle between vector x and y is 60deg.

  26. PHYSICS

    A bicycle with 0.80 -diameter tires is coasting on a level road at 5.6 . A small blue dot has been painted on the tread of the rear tire. a)What is the angular speed of the tires? b)What is the speed of the blue dot when it is 0.80 above the road? c)What

  27. dot product of vecotrs

    Question: Find (3a+b)dot(2b-4a) if a=-i-3j+k and b=2i+4j-5k I did: =3(-1,-3,1)+(2,4,-5)dot 2(2,4,-5)-4(-1,-3,1) =(-3,-9,3)+(2,4,-5)dot(4,8,-10)-(4+12,-4) =(-1,-5,-2)dot(0,-4,-6) =(0,20,12) =0+20+12 =32 The text book answer is -80. What did I do wrong/

  28. Math

    Find the dot product of the following vectors: a = (4, 1) b = (-1,4) a = (7,8) b = (4, -7) You have to find the angle too. Can someone please do these?

  29. Physics

    A child pushes a toy box 4.0m along the floor with the force of 6.00 N directed downward at an angle 37 degrees to the horizontal. a. How much work does the child do?" b. Would you expect more or less work to be done if the child pulled upward at the same

  30. Calculus - Dot Product

    consider a rhombus ABCD a) find the resultant of vector AB + vector AD and vector AB - vector AD? (cosine rule) b) What will be the value of the dot product of vector AB + vector AD and vector AB - vector AD always be? (always zero) c) Is this value of the

  31. Calculus Related

    tinyurl[dot]com/osguqrd Replace [dot] with a . Please provide an answer to the question in the link above.

  32. Chemistry

    is the lewis dot structure and a electron dot diagram the same thing ?

  33. English

    Dot a dot dot dot a dot dot Spotting the windowpane. Spack a spack speck flick a flack fleck Freckling the windowpane. A spatter a scatter a wet cat a clatter A splatter a rumble outside. Umbrella umbrella umbrella umbrella Bumbershoot barrel of rain.

  34. linear algebra compute vectors

    ||u||=2 ||v||=3 ||w||=5 u dot v = -1 u dot w = 1 v dot w = -4 Compute: a. ||-4w|| b. (u+w) dot v c. ||u+v||^2 d. ||v-4w||^2

  35. Physics

    Problem2-AFor A=-I+2j +5k and B=2j-3k,find: a) The dot productA.B b) The angle between the A and B

  36. Math - Vectors

    If "u = (2,2,-1)", "v = (3,-1,0)" and "w = (1,7,8)", verify that "u (dot) (v + w) = u (dot) v + u (dot) w". My work: LHS: u (dot) (v + w) = (2,2,-1) (dot) (4,6,8) = [(2,2,-1) (dot) (3,-1,0)] + [(2,2,-1) (dot) (1,7,8)] = [u (dot) v] + [u (dot) w] Therefore,

  37. algebra

    For the following question, please reference the graphic at: screenshotsfirefoxcom/cjbaIYetsJhJJimy/ds055uzetaobbcloudfrontnet Pictured is the graph of the equation 4x²=y(1-y)(2-y)² rotated around the y-axis. Find the volume of the egg.

  38. Vectprs and Scalars

    Why are some of these scalars and others are vectors? What's the difference and how can you tell? 1. a dot (b x c) 2. (a dot b) x (b dot c) 3. (a + b) dot c 4. a x (b dot c) 5. (a x b) dot (b x c) 6. (a + b) x c 7. a dot (b dot c) 8. (a x b) + (b x c) 9.

  39. Math

    Graph the inequality:x

  40. math

    Graph the inequality:x

  41. physics

    Three point charges are located away from a dot. charge 1 is 3 cm north of the dot and is 2.1 nC. Charge 2 is 5 cm east of the dot and is -5nC. Charge 3 is -10nC and is located 45 degrees northeast and 5.831 cm away from the dot. What is the net electric

  42. Science

    Which of the following brake fluids is a strong paint solvent? DOT 1 DOT 2 DOT 3 DOT 5

  43. linear algebra

    show that if u dot v = u dot w for all u, then v = w. You can use the result of the previous problem: http://www.jiskha.com/display.cgi?id=1184622247 Linearity of the inner product implies u dot v = u dot w -----> u dot(v-w) = 0 This is true for all u,

  44. Chemistry

    Hi everyone, I really need help with this problem. What is the reactant, products, and what compounds is it? Is it H2O, O2, or what? What are the transition molecules? Help please. Do as below to get to the image. I couldn't put the URL in and it isn't my

  45. Physics

    i41 tinypic com/2qna74k png (add the periods) For the vectors in the figure, with a = 6.4, b = 2.5 and c = 6.87. Calculate a(dot)b calculate a(dot)c calculate b(dot)c I got 0 for a(dot)b but the same method (ac*cos(theta)) does not work for the other two,

  46. PHYSICS

    Leg traction is applied to a patient's leg as shown in the figure below. If the physician has requested a 33 N force to be applied to the leg, and the angle is θ = 60 degrees. what mass m must be used for the object hanging from the massless cable? Image

  47. Calculus

    This is the question: i[dot]imgur[dot]com/EHneTuB[dot]jpg Am i correct in simply adding 1 + (-3), and equates to (-2) being the answer.

  48. algebra

    Please reference the photo at: screenshotsfirefoxcom/ak1Ss85a8nhM4o2t/brilliantorg for the question. What is the value of XY??? Thank you

  49. linear algebra

    show that if u (dot) v = 0 for all vectors v, then u = 0. One of the Axioms an inner product has to satisfy is: x dot x >=0 where equality only holds if x = 0 So, in your problem you take the special case v = u. Then: u dot u = 0 ----> u = 0

  50. general math

    here's an easy one for starters... what means greater or equal to on a number line, a closed dot or an open dot? open dot. it is a closed dot, 1000% sure!!!!!!!!!

  51. math

    Given p is false, q is true, and r is false, find the truth value of the statementShow step by step work. Use keyboard shortcuts of --àfor →, < --- > for→, ↔, v for V, and˄For ˄.

  52. geometry

    Please reference the illustration at screenshotsfirefoxcom/Cl7zsk8ZAmzCoMDM/brilliantorg to answer the following question: The Pharaoh would like to cover the lateral sides of his square pyramid with the finest marble. In order to save the cost of

  53. geometry

    Please reference the illustration at screenshotsfirefoxcom/kzZjGCIcg9EMQ0MH/brilliantorg to answer the following question: What percentage of the square's area is colored blue? 30% 35% 40% 45% 50%

  54. Geometry

    Find every possible area for a square drawn by connecting dots of a 3 dot by 3 dot grid.

  55. Algebra

    Hi, I'm struggling to do two questions. 1) If ||u||=2, ||v||=root 3 and u dot v = 1, find ||u+v|| 2)Show that there are no vectors u and v such that ||u|| = 1, ||v||=2 and u dot v = 3 Please help if you can. Thanks a million

  56. English

    How do you read ebible.org? 1. e bible dot o,r,g 2. e bible dot [ɔ́:rɡ] 3. e,b,i,b,l,e, dot o,r,g 4. e,b,i,b,l,e dot [ɔ́:rɡ]

  57. Calculus

    For which following condition, will the dot product of two vectors be zero? a) If the angle between them is 90°. b) If the angle between them is 0°. c) If the angle between them is 180° d) If the vectors have the same magnitude. Anyone know what the

  58. physics

    A uniform electric field of magnitude 250 V/m is directed in the positive x direction. A +12.0-ìC charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm). (a) What is the change in the potential energy of the charge–field system? (b)

  59. physics

    Please reference the illustration at screenshotsfirefoxcom/fDDGSaztdbf0b7Uh/brilliantorg for the following problem: A bunch of bananas of total weight W is hung at one end of a string passing over a perfectly smooth pulley. At the other end, a monkey

  60. Calculus

    Could someone help me with this question. Determine what limit would be represented by the following graph. imgur dot com/bceWN I am not sure if it has open dot or closed but what would the equation be for open and closed dot?

  61. calculus

    A searchlight rotates at a rate of 4 revolutions per minute. The beam hits a wall located 9 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

  62. graphing

    which of these is correct description of each inequality as it would be graphed on a number line. x 2 Closed dot on 2, arrow to the left Closed dot on 2, arrow to the right Open dot on 2, arrow to the left Open dot on 2, arrow to the right nevermind

  63. math

    Solve the compund inequality and graph the solution. -4-2 and I did t+2

  64. Math

    Consider the following line plot. 1 dot over 1|1 dot over 2| 1 dot over 3| 2 dots over 4| 3 dots over 5| 3 dots over 6| 2 dots over seven Would the mean or median be affected more with a data point of 20? Explain. Thank you

  65. math

    Solve the compund inequality and graph the solution. -4-2 and I did t+2

  66. Math: Cross Product

    Prove that | a x b | = (sqrt) [(a (dot) b)(b (dot) b) - (a (dot) b)^2]

  67. geometry

    Please refer to the following photo to answer this question: screenshotsfirefoxcom/0F0pXhMjyyk0fnnP/brilliantorg A kite is divided into four regions by two line segments that connect the midpoints of opposite sides. Is the total blue area equal to the

  68. Vectors/Scalars?

    is (u dot v)dot (a dot c) a scalar quantity or vector quantity? What's the difference? (I'm thinking scalar since it has no direction and it only has magnitude.)

  69. Bibliography

    In a bibliography, what is the title of the website? For example, for mises[dot]org/daily/3663 (please replace the [dot] with a period) is the title of the website "Mises[dot]org", "Ludwig von Mises Institute", or neither? I always thought it was, for

  70. Traffic Safety

    I have to find the top 5 reasons that causes traffic accidents on this website NHTSA.gov but I can't seem to find it anywhere thanks NHTSA is past of the Department of Transportation (DOT). The correct web address is NHTSA.dot.gov. I found this aite more

  71. Continuity equations

    I have the continuity equation as shown here: imgur(dot)com/NRfMphl(dot)jpg I need to find (deduce) this same equations with several considerations: -Assuming taht E is very small and working with minority -Assuming steady state conditions -Assuming low

  72. Math

    Quick question, I'm learning about inequalities and graphs, so I just have one thing that I forgot. With an underscored < symbol, would the graph have the open dot or closed dot? I forgot to take notes on this. My bad! I think that a < symbol that is not

  73. Linear Algebra

    Let u and v be vectors in R^n, and let T be a linear operator on R^n. Prove that T(u) dot T(v) = u dot v IFF A^T = A^-1 where A is the standard matrix for T.

  74. Math

    For inequality number lines would a less than or = to sign mean that that it would be a closed dot or open dot?

  75. Physics

    I need help with this exercise, I don't even know where to start. imgur(dot)com/WDCikKK(dot)png

  76. math and physics

    keepandshare[dot]com/doc16/727/math-pdf-99k?da=y *replace all [dot] with a period --> .

  77. math

    i.imgur[dot]com/hE0sWBt[dot]gif prove. [steve- please take another look at this.]

  78. math

    i.imgur[dot]com/hE0sWBt[dot]gif prove. [steve- please take another look at this.]

  79. English

    happy123 at hmail dot com --------------- How do you read this? happy one two three at h mail dot com (is this right?)

  80. Please Help asap: Math

    X is greater than or equal to 3 I'm pretty sure that its D, but i'm not sure 0=open dot @=closed dot A) @-------> 3 5 B)

  81. NEUROSCIENCE

    freepdfhosting[dot]com/b75c984836.pdf replace " [dot] " with a period. HELP?

  82. Physics

    Hi, I need some guidance solving this, thank you very much! imgur(dot)com/JCfHa13(dot)png

  83. Calculus 3

    Show that if a, b, c are in V3, then (a x b) dot [(bxc)x(cxa]) = [a dot (b x c)]^2 I don't know what properties to use

  84. Physics

    I need help with this exercise, any ideas how do impedances and resitance work in a smith chart? imgur(dot)com/sZAvj6y(dot)png

  85. geometry

    What is the blue area in the graphic at the following link: drivegooglecom/file/d/1w4WF6LfpJB34pkmeRnN5EJsOPuk-ZQUS/view

  86. First-Year Physics

    Question: s22.postimg[dot]org/comasgagh/untitled.png From my calculations, option A is correct. What am I doing wrong? Also, I can't find a relationship between amplitude and energy. Attempt: s9.postimg[dot]org/8shnsrjbj/daum_equation_1366155192269.png

  87. Physics

    Hi! Could you help me out with this exercise? Thanks! imgur(dot)com/j6clSrx(dot)png

  88. calculus

    "screenshotsfirefoxcom/8POFA7yOO7VQ1QGz/null"

  89. physics

    e1205[dot]hizliresim[dot]com/x/z/78wcx.png can anyone look at it please

  90. Physics

    Hi! Could you help me with this question? imgur(dot)com/lJk2Mfa(dot)png

  91. physics

    Please reference the following picture for this question: screenshotsfirefoxcom/V57wh6MYWUXfnx5M/brilliantorg Initially, the U-tube shown above is filled with water, and the level on each side is l0. After some oil is poured on side A, the level on that

  92. Physics

    Use the definition of scalar product( vector A* vector B = abcos theda and the fact that vector A * vector B = axbx+ ayby+azbz to calculate the angle between the two vectorgiven by vector A= 3i + 3j + 3k and vector B= 2i + 1j + 3k. The book said the answer

  93. physics

    Figure 2-42 shows a simple device for measuring your reaction time. It consists of a cardboard strip marked with a scale and two large dots. A friend holds the strip vertically, with thumb and forefinger at the dot on the right in Figure 2-42. You then

  94. Discrete Math: Applications of Dot Product

    A 35-kg trunk is dragged 10m up a ramp inclined at an angle of 12 degrees to the horizontal by a force of 90 N applied at an angle of 20 degrees to the ramp. At the top of the ramp, the trunk is dragged horizontally another 15m by the same force. Find the

  95. early childhood

    harborview preschool is designing its program to include lots of activities that develop writing skills. which would not be used for this specific purpose ? 1 dot to dot pics 2 tracing 3 cutting 4 gluing help me

  96. algebra

    A fair six-sided die is rolled. If the number showing is even, you lose a point for each dot showing. If the number showing is odd, you win a point for each dot showing. a. Find E(x)for one roll if x represents the number of point s you win. b. Find the

  97. Math

    Hi! Can someone help me with these? Thanks a bunch! :) 1.) Find the dot product. ∙ 2.) Find the dot product of u and v. u = v =

  98. Math

    Hi! Can someone help me with these? Thanks a bunch! :) 1.) Find the dot product. ∙ 2.) Find the dot product of u and v. u = v =

  99. Math graphs,dot,ven

    I did a bar graph I think it is easier than dot and ven diagram. Am I correct because ven diagram there are no similarities and dot is to long.the problem asks as follows. Display the data using a dot plot,bar graph or vennot diagram.decide which data

  100. biology

    Question: How many hydrogens are in this image? Image: oi43.tinypic[dot]com/2hxwql1.jpg (Replace [dot] with a period (.)) Oiriginal Question: (A) Enter the formula for Tamiflu by typing the number of each atom in the blanks. If Tamiflu does not contain any

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