209 Answered Questions for the topic Vectors

Vectors

04/27/18

#### Let u and v be vectors such that u = -3i + 2j and v = ai + 5j

Let u and v be vectors such that u = -3i + 2j and v = ai + 5j, where a ∈ R.
a. Find all values of a for which u and v are perpendicular.

Vectors

04/12/18

#### The vectors A=i+4j+3k and B=4i+2j-4k are

Inter 1st year basics learner
Physics home work

Vectors Physics

04/12/18

#### Angle between -4i+2j and 9k is

Inter 1st year basics learner
This is homework

04/10/18

#### If vector u is <3,4> and vector b is also <3,4>, then is vector a parallel to b or is it equal to it

I am honestly confused on if 2 vectors have the same change in x and y values then is it parallel or equal to it. And for example if 1 vector is double the other then how are they parallel, whywo...
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Vectors

04/03/18

#### A boat heading across river at velocity of 25 mph perpendicular to the current. The river downstream at 10 mph. What is the actual velocity of the boat

What is the answer to the question and how do we do it

03/25/18

#### Differential Equation Question

How would I write this in matrix form (x' = AX)
x' = x
y' = y
Note: Is it supposed to be like this: x' = (1 v 1)(x v y) or x' = (1 + 0 v 1 + 0)(x v y)? Note: the "v" means the value after...
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03/24/18

#### Differential Equation Problem. No clue how to do this.

Find the derivatives of each of the following vectors.
x(t) = [ t3 - 2t2 +t
etsin(t) ]

#### Displacement, Center of Mass

A student of mass 75 kg is in a small rowboat of mass95 kg resting on a calm lake. How far will the boat moveif the student walks from the bow to the stern of theboat? The distance from the bow to...
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Vectors

03/15/18

#### The vector ..... has length 15 and points at an angle of 15 ∘ 15∘

The vector u→ has length 15 and points at an angle of 15 degreesThe vector v→ has length 20 and points at an angle of 40 degrees
u→⋅v→ = ???

Vectors Triangle

03/09/18

#### A person starts walking from home and walks:

A person starts walking from home and walks:4 miles East7 miles Southeast6 miles South1 miles Southwest3 miles East
This person has walked a total of -- miles
Find the total displacement...
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02/24/18

#### The magnitude of the sum of two vectors A and B, |A+B| is equal to |A| + |B|

Choices:
A. Vectors A and B are perpendicular.
B. Vectors A and B are in opposite directions.
C. Vectors A and B are in the same direction.
What's the correct answer between them, and why...
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Vectors

02/20/18

#### Calculating distance between two points in 3D space (3 Dimensional)

Assuming I have a point A(x:170, y:5 ,z:-600) and I draw a triangle from this point to intersect point B using an angle of 15 degrees and at point B(x:-195, y:5 ,z:300), I draw another triangle to...
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Vectors

01/30/18

#### The velocity vector of a golf ball that is hit at an angle of π/12 off the ground with a speed of 70 m/s.

draw a symbolic and graphical representation of this problem please

01/09/18

#### find the resultant for the following both analytically and graphically. calculate the percent deviation between the two methods.

find the resultant for the following both analytically and graphically. calculate the percent deviation between the two methods.(where 1cm=50g) 50g at 110 degrees, 200g at 218 degrees, 150g at 298...
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#### find the magnitude and direction of the car's displacement from the starting place.

a driver becomes lost and travels 12 km west, 5 km south, and 8 km east . find the magnitude and direction of the car's displacement from the starting place

12/18/17

#### Please help. Prove by using vectors.

If ABCD is a paralleloid, E is the middle of AB. If DE intersects AC on F. Then, Prove AF=AC/3 and FE=DE/3

Vectors

12/07/17

#### If a vector has an x component of -25.0units and a component of 40.0units then the magnitude and direction of this vector is

Who is the great to find this by step by step

Vectors Physics

11/26/17

#### How would I solve this?

"Two crewmen pull a boat through a lock, as shown in Figure 5-22. One crewman pulls with a force of F1 = 120 N at an angle of θ = 34° relative to the forward direction of the boat. The second...
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Vectors Trigonometry Vectors

11/03/17

#### What is the magnitude of the resultant vector?

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

Vectors

10/25/17

#### A rhombus ABCD has vertices with position vectors a = pi + 5j, b = 2i + 12j, c = (q + 4)i + qj and d = 22i + 2j. Find the values of p and q.

A rhombus ABCD has vertices with position vectors a = pi + 5j, b = 2i + 12j, c = (q + 4)i + qj and d = 22i + 2j. Find the values of p and q.
I really appreciate any help that can be give, I...
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#### When two vectors are 180 degrees apart?

a) you add them
b) you subtract them

10/10/17

#### Vector Projection, and Orthogonal Complement

I have projections down good, but I keep getting the orthogonal complement wrong.
QUESTION
a = <0,2,-5> b = <6,8,-3>
compute the projection of a onto b and the vector...
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10/01/17

#### Determine whether the vectors a and b are parallel, orthogonal, or neither:

Determine whether the vectors a and b are parallel, orthogonal, or neither:
a=〈3,5〉 and b=〈-10,-6〉

09/23/17

#### Assume u4 is not a linear combination of {u1,u2,u3}

Assume u4 is not a linear combination of {u1,u2,u3}
A. {u1,u2,u3,u4} is never a linearly dependent set of vectors. B. {u1,u2,u3,u4} could be a linearly independent or linearly dependent set of...
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Vectors

09/10/17

#### A=cos¶i+sin¶j, B=cos2¶i-sin2¶j then fibd angle between A×B?

this is a question of vector.&¶=theta

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