121 Answered Questions for the topic vector

Vector

12/02/17

#### vector question

A co-ordinate system consisting X and Y axis is rotated by an angle θ in anticlockwise direction in the same plane.The unit vector along new set of axes x' and y' respectively are ? . considering...
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#### 53 degrees East of South is the same as?

a) 37 degrees South of East
b) 90 degrees
c) 53 degrees South of East

Vector

09/24/17

#### A descent vehicle landing on Mars has vertical velocity toward the surface of Mars of 5.5 m/s. At the same time, it has a horizontal velocity of 3.5 m/s.

1)At what speed does the vehicle move along its descent path?
2)At what angle with the vertical is this path?
3)If the vehicle is 230 m above the surface,how long until it reaches the surface?

Vector Magnitude

08/05/17

#### Magnitude of a vector

If A = 6i -8j and B = - 16i + 5j , what is the magnitude of the vector C = 2A - B ?

Vector

07/22/17

#### a pedestrian walks a rate of 6km per hour east. The wind pushes him northwest at a rate of 13 km. per hour. Find the magnitude of the resultant vector

a pedestrian walks a rate of 6km per hour east. The wind pushes him nrthwest at a rate of 13 km. per hour. Find the magnitude of the resultant vector

Vector Precalculus

03/28/17

#### Evaluate the expression: v ⋅ w

Given the vectors: r = <8, 1, -6>; v = <6, 7, -3>; w = <-7, 5, 2>

Vector

03/24/17

#### find a vector with perpendicular

Find the real number a such that the vector w = au+v is perpendicular to 2u-vIm trying to solve this but I dont know how to do this ... could anyone please help me?
u = 2i + 2j + k and v = 3i - j...
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01/16/17

#### Finding the components of a vector

Find the components of vector u with a magnitude of 10 and a direction angle of ∅=54°

12/26/16

#### determining the span

Consider the vectors u = x2+ 2x + 3 , v = 2x2 + 4x + 5 in R[x]. Decide if w = 2x2 + 4x + 5 is in the span of u and v.

12/22/16

#### Proving Subspaces

by checking closure under the zero vector, closure under addition and closure under scalar multiplication; investigate if W = { (w1, w2, w3) ∈ R3 : 6w1 - 5w2 + 4w3 = 0 } is a subspace of R3 ?

#### Vector physics help!

Suppose a body has a force of 10 pounds acting on it to the right, 25 pounds acting on it -135° from the horizontal, and 5 pounds acting on it directed 150° from the horizontal. What single force...
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12/15/16

#### If vector v has an initial point and a terminal point write v as multiples of the basis vectors, write v in the form v = ai + bj.

If vector v has an initial point at P1 and a terminal point at P2, write v as multiples of the basis vectors i = <1,0> and j = <0,1> That is, write v in the form v = ai + bj.
P1 =...
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12/15/16

#### Find a unit vector that points in the opposite direction as v.

Find a unit vector that points in the opposite direction as v.
Let .v=-3(pi 2)i-4(pi 2)j
A. u= (3/5)i+(4/5)j
B. u= -(3/5)i-(4/5)j
C. u= -(5/3)i-(5/4)j
D. u= (5/3)i+(5/4)j

Vector

10/31/16

#### linearly independent vectors question

Given three vectors x1 = [2 4 8]T, x2 = [1 -11]T, x3 = [1 1 4]T, test if they are linearly independent. Write x1 as a linear sum of x2 and x3

Vector

10/17/16

#### Vector perpendicular distance

Find perpendicular distance of the plane 6 x + y + 2 z = 18 from origin O by first finding co-ordinates of the point P on the plane such that OP is perpendicular to the given plane.

Vector Calculus 3

10/04/16

#### Find an equation of the plane.

Find an equation of the plane.The plane that passes through the point (2, 4, 5) and contains the line x = 5t, y = 2 + t, z = 4 − t

#### 12.5: Equations of Lines and Planes

Find an equation of the plane.The plane through the point (7, −8, −4) and parallel to the plane 9x − y − z = 1

#### Motion and Force doubt

When I calculating resultant force in equilateral triangle why there is square root vector formula we will put?

08/29/16

#### Vector Analysis Arc Length, Unit tangent, unit Normal and curvature

Let C be the curve given by the equation, R(t)= sin t i + cos t j + log sec t k (0≤t<π/2)
Find:
a.) the element of arc length, ds, along C, in terms of t.
b.) the unit tangent T.
c.)...
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Vector

08/01/16

#### Application of vector in computer science?

pls ans this question. it is very very i mportant for me

07/10/16

#### Let V be the vector set in R2 with the following: Addition: [x1x2]?[y1y2]=[0x2+y2] Scalar Multip.: a?[x1x2]=[0ax2] Which of 8 Vector Space Axioms are met?

I cannot for the life of me figure out which of these I am missing and/or over-including in my response to this question.

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