Wednesday

April 16, 2014

April 16, 2014

Number of results: 109,599

**Dynamics**

Which one of the following statement is correct Multiple choice question a)Energy and work are scalars b)Force and work are vectors c)Energy, momentum and velocity are vectors d)Force, momentus and velocity are scalars
*Saturday, August 4, 2012 at 5:49am by Rajan*

**Physics**

please check these: which of the following is an example of a vector quantity? a. velocity b. temperature c. volume d. mass i picked A identify as vecor or scalar 1. speed of a snail---vector 2. the time it takes to run a mile-scal 3. the free-fall accleration---vector 3. ...
*Saturday, January 31, 2009 at 12:22pm by y912f*

**physics: scalars/vectors**

b
*Sunday, September 17, 2006 at 1:43pm by Anonymous*

**dyanamics**

Which one of the following statements is correct? (a) Energy and work are scalars (b) Force and work are vectors (c) Energy, momentum and velocity are vectors (d) Force, momentum and velocity are scalars
*Friday, August 3, 2012 at 7:54am by raja*

**Vectors**

Vectors "v" and "w" are given by v = 5i - 2j and w = i + 3j. Find scalars r and s such that r ( v - w) = ( r + s )i - 20j.
*Thursday, April 26, 2012 at 9:32am by Cameron*

**physics: scalars/vectors**

Please check. 1. Which of the following quantities are scalars, and which are vectors? a. the acceleration of a plane as it takes off- VECTOR b. the number of passengers on the plane- SCALAR c. the duration of the flight- SCALAR d. the displacement of the flight- VECTOR e. the...
*Sunday, September 17, 2006 at 1:43pm by Anonymous*

**physics**

Velocity and acceleration are vectors. The others are scalars (numbers without direction)
*Tuesday, June 14, 2011 at 12:13am by drwls*

**total misunderstanding of vectorsphysics**

You have made this problem impossible by the most fundamental error. You gave us scalars, not vectors! Vectors have both magnitude (scalar length) and DIRECTION !!! Without direction, the three "things" are simply not vectors and they certainly do not have components.
*Friday, February 8, 2013 at 6:40pm by Damon*

**math**

The vectors u, v are given by u = 3i + 5j, v = i - 2j. Find scalars a, b such that a(u + v) = 8i + (b - 2)j
*Sunday, May 16, 2010 at 11:50am by Michael*

**math**

The vectors u, v are given by u = 3i + 5j, v = i - 2j. Find scalars a, b such that a(u + v) = 8i + (b - 2)j
*Sunday, May 16, 2010 at 12:08pm by Michael*

**Physics (vectors)**

Given vectors A= (Axi + Ayj), B= (Byj+Bzk) and C= (Cyj + Czk). a) find the triple product of these vectors defined by A dot (BxC) in terms of the vector components. I get 0 as the answer. b) is the result found in a) a scalar of a vector? since I had to multiply finally by the...
*Tuesday, January 23, 2007 at 1:26pm by steve*

**linear algebra**

Show that a subset W of a vector space V is a subspace of V if and only if the following condition holds: If u and v are any vectors in W and a and b are any scalars, then au + bv is in W.
*Wednesday, July 11, 2007 at 10:03pm by chris*

**physics**

Matt runs away from Ashley. Matt runs 40 m north and 30 m west. What is the minimum distance Ashley must run to catch Matt? Draw the image and label the vectors and scalars.
*Thursday, October 4, 2012 at 11:57pm by Lauren*

**physics 4**

help me in this topicsmass vol.relationship,graphs and itinterpretation,vectors and scalars help me more to understand this topics the tools in physics,measurement,vectors and scales It is quite impossible to divine what you dont understand. We can easily critique your ...
*Saturday, August 6, 2005 at 1:13am by pamea*

**physics**

Can you help me with this one also? I know how to do it with 3 vectors but I can't seem to draw it with 4 vectors. The magnitudes of the four displacement vectors shown in the drawing are A=16.0 m, B=11.0 m, C=12.0 m, and D=26.0 m. Determine the (1) magnitude and (2) ...
*Sunday, January 23, 2011 at 9:02pm by Brittany*

**physics**

You add the vectors. I recommend break each of the distances into N and E vectors, so adding the four vectors can be done in components. I will be happy to critique your thinking or work.
*Monday, January 14, 2008 at 3:11am by bobpursley*

**math**

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the product of vectors p and q?
*Tuesday, January 1, 2013 at 6:21am by bhawani*

**math**

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the dot product of vectors p and q?
*Wednesday, January 2, 2013 at 1:04am by bhawani*

**Physics**

Break each of the vectors into N, E components. For instance: vectorC is -C*Cos35 E and C*sin35N do that for all three vectors, then the sum of all three E vectors will be zero, and the sum of all three N vectors will be zero. Solve B, C (B,C is a magnitude of vectors b, C
*Monday, January 19, 2009 at 8:59pm by bobpursley*

**Physics Vectors**

two vectors A and B have magnitude such that A>B. We do not know the directions of the vectors. however we can say that the magnitude of the sum A+B must be between? a) B and 2A b)A and A+B c) A-B and A+B d) A-B and A e) B and A+B
*Thursday, September 27, 2012 at 8:59pm by cody*

**physics**

if the * is the degrees, then you need to draw the vectors according to their direction. you can use a graph paper and make your own scale: say one unit cube is 10km/hr. then use the protractor to draw the vectors taking an horizontal line as zero degrees. then draw the ...
*Thursday, June 6, 2013 at 3:57am by bonjo*

**college physics**

vectors have direction. YOu have specified no directional vectors in your vectors.
*Tuesday, September 28, 2010 at 1:15pm by bobpursley*

**Physics**

In both cases, magnitude is the same units however distance and speed are scalars and ONLY HAVE MAGNITUDE but displacement and velocity are VECTORS and have both magnitude and DIRECTION Your speedometer measures speed but for velocity you need a compass as well Your odometer ...
*Tuesday, February 18, 2014 at 1:51pm by Damon*

**Physics**

All are scalars accept for C. But double check this.
*Saturday, February 2, 2013 at 6:57pm by Devron*

**physics**

if the * is the degrees, then you need to draw the vectors according to their direction. you can use a graph paper and make your own scale: say one unit cube is 10km/hr. then use the protractor to draw the vectors taking an horizontal line as zero degrees. then draw the ...
*Thursday, June 6, 2013 at 3:57am by d*

**Physics **

The last thing you need to see is an equation. You are adding three vectors. Compute the vectors, and add them with vector math, the result will be along the direction of the diagonal. I suspect you are having breaking vectors into components, and need to understand that.
*Friday, August 13, 2010 at 8:12pm by bobpursley*

**Physics**

No on the workx +worky. Work is not a vector. You just add them as scalars.
*Tuesday, November 17, 2009 at 7:07pm by bobpursley*

**physics**

Which of :acceleration,age,speed,temperature,and velocity are vector quantities? Are any of them scalars?
*Tuesday, June 14, 2011 at 12:13am by alexa*

**physics-vectors**

If the magnitude of the sum of two vectors is greater than the magnitude of either vector, then: If the magnitude of the sum of two vectors is less than the magnitude of either vector, then: a. the scaler product of the vectors must be negative b. the scaler product of the ...
*Monday, August 6, 2007 at 12:33am by mekeke*

**Physics**

If a&b are vectors such that a+3b=-3i+j & a-b=i-2j then find vectors a&b.
*Wednesday, November 16, 2011 at 12:52pm by Emily*

**physics**

what are vectors? and how do you us them. for example, i don't understand vector addition.
*Sunday, January 23, 2011 at 10:06pm by vectors?*

**Physics**

A) The work done is the scalar product of the F and d vectors. B) The cosine of the angle between the two vectors is the ratio of the scalar product (obtained in part (A)) to the product of the magnitudes os the F and d vectors. C) I do not understand why the displacement is ...
*Wednesday, April 22, 2009 at 10:40pm by drwls*

**Math - Algebraic Vectors**

Given the vectors: u = [3, 0] v = [-1, 2] a) Express the vector w = [2, 8] as a linear combination of vectors u and v. How do I do this?
*Wednesday, February 13, 2008 at 2:38pm by Anonymous*

**physics**

Find the vectors.sum of ihe three vectors A=-3i-2j+7k, B=i+3j+k, C=-k
*Monday, February 4, 2013 at 8:24pm by baron*

**math**

if vectors a+b+c=0 and modulus of the vectors a, b and c are 3 ,5 and 7 respectively. find the angle between the vectors a and b.
*Saturday, January 5, 2013 at 4:04am by raja*

**Calculus and Vectors**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a dot b
*Saturday, May 11, 2013 at 3:53pm by Johnny*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular
*Sunday, November 21, 2010 at 8:12pm by karla*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular
*Sunday, November 21, 2010 at 8:50pm by karla*

**physics multiplying vectors**

n the product F = qv · B , take q = 4, = 2.0i + 4.0j + 6.0k and = 136i -176j + 72k. What then is in unit-vector notation if Bx = By? ~~may i get some assistance in this problem? so far.. i tried this.. 136i-176j+72k = 4(2.0i+4.0j+6.0k)(B) 136i-176j+72k = (8i+16j+24k)(B) [(136i...
*Thursday, March 29, 2007 at 9:43pm by sam*

**math**

The sum of vectors x and y would not be written "x y". What kind of product are you talking about? Cross (dot) prducts are scalars. Are you taking about the vector cross product X x Y ? (The characters and x operator are supposed to be in bold type for cross products) Your ...
*Friday, April 10, 2009 at 1:36am by drwls*

**Physics**

The sum & difference of two non-zero vectors Ä & B are equal in magnitude.what can you conclude about these vectors?why?
*Sunday, November 25, 2012 at 6:12pm by Minte*

**Calculus**

Name two sets of vectors that could be used to span a set in R^3. Show how the vectors (-1,2,0) and (3,4,0) could each be written as a linear combination of the vectors you have chosen.
*Wednesday, April 28, 2010 at 4:56pm by Jackiee*

**Maths-can someone explain something to me???**

this is a forum for help with homework questions. Asking for a dissertation on vector algebra is a bit much. Also, it will probably not be any more comprehensible here than in your textbook. Looks lie it's time for a little face-to-face help. http://www.physics.uoguelph.ca/...
*Monday, February 18, 2013 at 12:48pm by Steve*

**Calulas and VECTORS**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
*Wednesday, May 19, 2010 at 7:34pm by z...........................*

**Vectors**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
*Saturday, May 11, 2013 at 3:54pm by Johnny*

**Physics**

Find the scalar product of the vectors ai+bj and bi-aj . Where a and b are arbitrary constants. What's the angle between the two vectors?
*Thursday, May 30, 2013 at 9:03am by Jacob*

**physics**

Torque is the F x r vector cross product. Do your x, y and z represent unit vectors? It is conventiuonal to use i, j and k for unut vectors along x, y and z orthogonal axes. I am confused by your notation.
*Friday, March 25, 2011 at 7:21pm by drwls*

**physics**

Given the vectors = (19 cm, -7 cm) in green and = (-23 cm, 9 cm) in blue shown on the grid below, calculate the magnitude of the vectors described below and select the correct sketch for each from the choices below. The tail-to-head method is used to represent the operations ...
*Tuesday, October 15, 2013 at 12:30am by butcha*

**vectors**

Determine whether each statement is true or false. Provide a brief justification. a. Two lines with parallel direction vectors willnot intersect. b. Two linesthat are perpendicularin R3 willhave perpendicular direction vectors. c. Two linesthat havenon-paralleldirection ...
*Wednesday, June 9, 2010 at 5:25pm by Alicia*

**Calculus and vectors**

Please, help I don't understand vectors T.T 1. In the prism, assume all dimensions have different lengths, state the following: a) state 3 equal vectors to DC⃗ b) state 4 opposite vectors to BC⃗ ------------------------------------- Here is the prism below, imgur ...
*Sunday, March 18, 2012 at 12:09am by Melissa*

**Calculus and vectors**

A parallelogram is formed by R^3 by the vectors PA=(3,2,-3) and PB=(4,1,5). The point P=(0,2,3). a) what are the location of the vertices? b) what are the vectors representing the diagonals? c) what are the length of the diagonals?
*Friday, March 23, 2012 at 4:03pm by Melinda*

**Physics**

Opposite directions? Subtract (or add if you are doing it as vectors). In Vectors, opposites subtract to give a lesser magnitude.
*Wednesday, September 18, 2013 at 11:17am by bobpursley*

**Physics**

Two vectors are at right angle to each other as shown. Find the resultant vector (the sum of the two vectors).
*Sunday, March 4, 2012 at 4:32pm by Mina*

**12th grade**

prove that normal to plane containing 3 points whose position vectors are a vector,b vector,c vectorlies in direction addition of cross product of vectors b and c and cross product of vectors c and a and cross product of vectors a and b
*Tuesday, September 22, 2009 at 9:54am by parth*

**physics**

The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m, B = 11.0 m, C = 12.0 m, and D = 21.0 m. Determine the magnitude and directional angle for the resultant that occurs when these vectors are added together.
*Friday, January 20, 2012 at 3:18pm by Anonymous*

**physical science**

The resultant vector of two particular displacement vectors dose not equal the sum of the magnitudes of the individual vectors. Describe the directions of the two vectors.
*Monday, May 2, 2011 at 5:15pm by Becky*

**Physics**

How does the resultant of two vectors change as the angle between the two vectors increase?
*Friday, September 30, 2011 at 2:54pm by Lala*

**Physics**

How does the resultant of two vectors change as the angle between the two vectors increase?
*Sunday, October 2, 2011 at 8:37pm by Lala*

**physics**

two vectors A and B have magnitude such that A>B. We do not know the directions of the vectors. however we can say that the magnitude of the sum A+B must be between? a) B and 2A b)A and A+B c) A-B and A+B d) A-B and A e) B and A+B
*Thursday, September 27, 2012 at 7:21pm by Kylie*

**PreCalculus**

Given vectors u=7i + 3j and v = -4i + 3j, find 5u-4v in terms of unit vectors. I am just beginning the study of vectors and have this problem. Could someone help? Thanks.
*Thursday, January 29, 2009 at 9:48pm by Joanie*

**Physics**

you cant use that equation. THe equation is a vector equation, and you added them as scalars. Redo it in each of two directions, perpendicular to each other.
*Monday, April 4, 2011 at 11:08am by bobpursley*

**Physics**

What is the resultant of two displacement vectors having the same direction? a. The resultant is the sum of the two displacements having the same direction as the original vectors. b. The resultant is the difference of the two displacements having the same direction as the ...
*Tuesday, February 5, 2008 at 4:27pm by Shenay*

**Physics**

Add as vectors the forces due to the charges at the opposite corners. This requires a knowledge of Coulomb's law and how to add vectors. I assume you are familiar with both.
*Monday, January 26, 2009 at 3:42pm by drwls*

**physics**

draw the figure. draw the force vectors from all corners. Add them as vectors. If you use arguments of symettry, you can avoid one adjacent corner.
*Tuesday, September 21, 2010 at 4:37pm by bobpursley*

**physics**

Add the two displacement vectors. This will tell you the magnitude and direction of the resultant. If you do not understand how to add vectors, I suggest a review or private tutoring in that subject.
*Wednesday, February 16, 2011 at 12:51am by drwls*

**physics**

A football player runs the pattern given in the drawing by the three displacement vectors A, B, and C. The magnitudes of these vectors are A = 5.0 m, B= 15 m, and C = 18 m. Using the component method, find the magnitude and direction è of the resultant vector
*Friday, February 8, 2013 at 6:40pm by james*

**Physics**

70 cm is the distance, not displacement. His travels are vectors, and you have to add them as vectors. He is flying at 10relative to the wind, but the wind is pushing him back at 2.5. HMMMM. What do you think.
*Wednesday, February 4, 2009 at 9:10pm by bobpursley*

**Physics**

For your next question on vectors, you will have to brief us as to what you have learned. To combine two vectors, you could use graphical methods or summing components of vectors. In this particular case, since the two vectors happen to be directed opposite to each other, we ...
*Monday, September 7, 2009 at 8:27pm by MathMate*

**physics**

You seem to have omitted unit vectors (such as i, j, k) from your question, and you also have not named the three separate vectors you are talking about. Incomplete questions cannot be answered
*Wednesday, February 13, 2013 at 3:17pm by drwls*

**Physics (vectors)**

Could you please help me with this exercise? Thanks. Adding and substracting vectors Solve for the unknown variables: (a) (a, b) + (3, 0) = (6, 7) (b) (11, c) + (d, 5) = (-12, −3) (c) (5, 5) + (e, 4) = (2, f) (d) (-1, −3) − (5, g) = (h, 2)
*Wednesday, February 13, 2013 at 11:18am by Kathy*

**Physics (vectors)**

Could you please help me with this exercise? Thanks. Adding and substracting vectors Solve for the unknown variables: (a) (a, b) + (3, 0) = (6, 7) (b) (11, c) + (d, 5) = (-12, −3) (c) (5, 5) + (e, 4) = (2, f) (d) (-1, −3) − (5, g) = (h, 2)
*Wednesday, February 13, 2013 at 11:52am by Kathy*

**physics**

It is called a dot product, but you typed it like a cross product, which is something else entirely. The dot product of two vectors is the product of their magnitudes TIMES the cosine of the angle between the vectors. These vectors are not parallel in this case, so the cosine ...
*Saturday, March 6, 2010 at 8:29pm by drwls*

**physics**

I described how to do this yesterday. Start by adding the four force vectors. Someone will gladly critique your work. The mass of the object is not needed to answer the questions. If you are unfamiliar with how to add vectors, please say so and references can be provided.
*Friday, January 18, 2008 at 2:52pm by drwls*

**Physics - jane**

Vectors r, a and b have not been defined in the question. Perhaps these are notations used in your class and are obvious to you. Please define what they are (velocity, acceleration, radial, tangential...) I suppose unit vectors i, j are parallel to the x,y-axes respectively.
*Tuesday, June 2, 2009 at 10:08pm by MathMate*

**vectors**

ok theres a graph. its like this. basically theres a ray coming from the origin going up and left diagonally at about a 30 degree angle. the question says "for the following vectors draw the component vectors along the x and y axis". what do i do?!
*Wednesday, August 5, 2009 at 2:24pm by jawn*

**Physics**

(a) Add the vectors of his 55 mile and 25 miles flights. The reverse of that vector is the direction and distance he must fly the next day. (b) Add the magnitudes of the three flight vectors in the previous question.
*Sunday, September 12, 2010 at 9:08pm by drwls*

**Physics**

ok, you are not considering the forces to be vectors. Adding them as if they are in a straight line won't work. Sketch the locations, and then the forces have to be added as vectors. I would change each force to components in the x and y direction, then add the x's, to get the...
*Sunday, January 2, 2011 at 4:58pm by bobpursley*

**Math**

Let u= (2,1,0,1,-1) and v=(-2, 3, 1, 0,2). Find scalars a and b so that au-bv=(-8,8,3,-1,7)
*Friday, April 6, 2012 at 10:42pm by Lynn*

**physics**

Express as vectors A =[0, -1000] B =[500sin(53°), -500cos(53°)] C =[400, 0] Sum the vectors, then calculate the magnitude and direction of that sum.
*Monday, September 9, 2013 at 8:18am by Graham*

**Physics**

A football player runs the pattern given in the drawing by the three displacement vectors , , and . The magnitudes of these vectors are A = 6.00 m, B = 13.0 m, and C = 15.0 m. Using the component method, find the (a) magnitude and (b)direction of the resultant vector + + . ...
*Saturday, July 9, 2011 at 9:15pm by Kristi*

**vectors**

If two vectors u and v fit the equation (u − v) • (u − v) = u•u+v•v, how must these vectors u and v be related? What familiar theorem does this equation represent?
*Monday, April 12, 2010 at 7:07pm by sally*

**Physics (vectors)**

The way you have described this, A IS the resultant of B and C. If these are indeed three separate vectors then the resultant summing all three is simply 2 times A in the direction of A
*Friday, February 15, 2013 at 6:48pm by Damon*

**Physics**

2. We have two vectors that line in the x-y plane. If we take the cross-product of those two vectors we know that a. the magnitude of the cross-product will always be equal to the product of the magnitudes of the two vectors. b. the magnitude of the cross-product will always ...
*Tuesday, December 27, 2011 at 8:03am by Sarah*

**physics**

Suppose vector A=3i-2j, B= -i-4j and vector C are three vectors in xy plane with the property that vectors A+B-C. What is the unit vector along vector C?
*Saturday, January 28, 2012 at 7:25am by Abdela said yimer*

**Physics**

speed, of a snail or otherwise, is a scalar. Add direction, and it is a vector. Multiply, or to divide vectors is a little complicated. ordinary multiplication or division results in a vector. dot product results in a scalar cross product results in a vector which is ...
*Saturday, January 31, 2009 at 12:22pm by bobpursley*

**physics**

Vector A is given by A = c x + 6 y, and vector B is given by B = 4.8 x - 16.2 y, where x and y are the x and y unit vectors. What does c need to be such that these two vectors are perpendicular?
*Thursday, October 28, 2010 at 1:44pm by sam*

**Physics**

Vectors and Scalars Graph 1. determine the total distance traveled and the displacement made. A. 5.0 km 15 degrees east of north B. 5.0 km 20 degrees east of south C. 5.0 km east D. 5.0 km 30 degrees south of west E. 5.0 km 20 degrees east of south F. 5.0 km 40 degrees north ...
*Thursday, July 12, 2012 at 8:51am by Vicky*

**Physics**

A football player runs the pattern given in the drawing by the three displacement vectors A ,B ,C and . The magnitudes of these vectors are A = 4.00 m, B = 17.0 m, and C = 19.0 m. Using the component method, find the (a) magnitude and (b)direction of the resultant vector A + B...
*Thursday, July 14, 2011 at 12:47am by Kelli*

**physics**

The problem concern the position vectors r1=2.43mi-4.74mj and r2=-3.02mi+0.85mj. Find the angle between the two vectors. Hint: Find the angle each makes with the +x-axis.
*Sunday, June 12, 2011 at 7:49pm by Wykeena*

**physics**

The problem concern the position vectors r1=2.43mi-4.74mj and r2=-3.02mi+0.85mj. Find the angle between the two vectors. Hint: Find the angle each makes with the +x-axis.
*Sunday, June 12, 2011 at 7:49pm by Wykeena*

**physics**

The problem concern the position vectors r1=2.43mi-4.74mj and r2=-3.02mi+0.85mj. Find the angle between the two vectors. Hint: Find the angle each makes with the +x-axis.
*Sunday, June 12, 2011 at 7:51pm by Wykeena*

**Physics**

1) The vector sum of three vectors gives a resultant equal to zero. what can you say about the vectors? 2) Vector is 3.00 units in length and points along the positive x-axis. Vector is 4.00 units in length and points along the negative y-axis.Use graphical methods to find the...
*Thursday, November 19, 2009 at 12:44am by Aman*

**Physics**

2 displacement vectors of 15 meters and 10 meters are combined. a.Find the magnitude of the minimum possible resultant and the angle between the vectors. b. Find the magnitude of the maximum possible resultant and the angle between the vectors.
*Sunday, September 16, 2007 at 7:37pm by Bailey*

**linear algebra**

which of the following sets of vectors span R^3? a.){(1, -1, 2), (0, 1, 1)} b.) {1, 2, -1), (6, ,3, 0), (4, -1, 2), (2, -5, 4)} c.) {(2, 2, 3), (-1, -2, 1), (0, 1, 0)} d.) {(1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 1, 1)} can someone show the steps to check for one of them and i ...
*Thursday, July 19, 2007 at 2:02pm by chris*

**physics [vectors]**

The concept i get, but somehow i just can't execute this problem, please help me! You are given vectors A = 5.5 6.2 and B = - 3.7 7.4 . A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of C with B is 19.0. I need x and y ...
*Sunday, August 30, 2009 at 10:45pm by lina*

**physics**

tension = sum of centrietal force+gravity notice these are vectors. tensionvertical= mg down tensionhorizonal= m w^2 * rad = .5*(2PI/.4)^2 * .8 now, after calculating that, you add them as vectors tension= sqrt ( (mg)^2+(horizonalabove)^2 )
*Thursday, April 26, 2012 at 6:36am by bobpursley*

**physics--vectors**

the components of a vector V can be written (Vx,Vy,Vz). what are the components and length of a vector which is te sum of the 2 vectors, V1 and V2, whose components are (8,-3.7,0) and (3.9,-8.1,-4.4)?
*Sunday, April 5, 2009 at 4:54am by Nat*

**Physics**

Use the two force vectors to get it. YOu have a net S force, and a net E force. tHe angle S of east is given by arctan S/E where S and E are the resultant vectors in those directions.
*Sunday, October 31, 2010 at 8:32pm by bobpursley*

**Physics**

Given the displacement vectors A = (7.00 - 1.00 + 3.00 ) m and B = (6.00 + 5.00 - 3.00 ) m, find the magnitudes of the following vectors and express each in terms of its rectangular components. (a) C = A - B (b) D = 3A + B
*Wednesday, September 26, 2012 at 8:20pm by Abraham*

**Physics**

A student accurately uses the method for combining vectors. The two vectors she combines have magnitudes of 55 and 25 units. The answer that she gets is either 85, 20, or 55. Pick the correct answer, and explain.
*Monday, September 27, 2010 at 7:00pm by Anonymous*

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