- How do you prove three lines are coplanar?
- Can you add zero to a null vector?
- Can we add three vectors not lying in the same plane to get a null vector?
- Is it possible to add a scalar to a vector?
- What is the angle between two vectors whose vector product is zero?
- Does the zero vector have a direction?
- What is null vector and example?
- Can three non coplanar vectors give zero resultant Why?
- What if 3 vectors are coplanar?
- What can we use to resolve a vector?
- How do you know if 4 vectors are coplanar?
- How do you know if three points are coplanar?
- What are non coplanar vectors?
- What is the significance of null vector?
- Is displacement scalar or vector?
- Is an odometer scalar or vector?
- Under what condition the sum of three vectors will be zero?
- Can three equal magnitude vectors add to zero?

## How do you prove three lines are coplanar?

2 Answers.

Examine both lines in parametric form.

If their vectors are parallel then they are certainly coplanar.

If their vectors are not parallel, two lines are coplanar if and only iff they intersect; otherwise, they are skew..

## Can you add zero to a null vector?

Vectors are just a set of things that can be added and scaled according to certain rules (the axioms). The axioms require that there be an identity element for vector addition—that’s the zero (or “null”) vector. It’s a vector, and when you add it to any other vector, you get the same vector: .

## Can we add three vectors not lying in the same plane to get a null vector?

(e) Three vectors not lying in a plane can never add up to give a null vector.

## Is it possible to add a scalar to a vector?

Although vectors and scalars represent different types of physical quantities, it is sometimes necessary for them to interact. While adding a scalar to a vector is impossible because of their different dimensions in space, it is possible to multiply a vector by a scalar.

## What is the angle between two vectors whose vector product is zero?

Answer. Answer: If the cross product of two vectors is the zero vector (i.e. a × b = 0), then either one or both of the inputs is the zero vector, (a = 0 or b = 0) or else they are parallel or antiparallel (a ∥ b) so that the sine of the angle between them is zero (θ = 0° or θ = 180° and sinθ = 0).

## Does the zero vector have a direction?

With no length, the zero vector is not pointing in any particular direction, so it has an undefined direction. We denote the zero vector with a boldface 0, or if we can’t do boldface, with an arrow →0. It behaves essentially like the number 0. If we add 0 to any vector a, we get the vector a back again unchanged.

## What is null vector and example?

A null vector is a vector that has magnitude equal to zero and is directionless. It is the resultant of two or more equal vectors that are acting opposite to each other. A most common example of null vector is pulling a rope from both the end with equal forces at opposite direction.

## Can three non coplanar vectors give zero resultant Why?

Answer. First we take two vectors , the resultant of the these two vectors is equal in magnitude of the third vector but directed in opposite direction. But when these three vectors are not in the same plane , when we resolve their rectangular component, they do not cancel each other therefore resultant is not zero.

## What if 3 vectors are coplanar?

If there are three vectors in a 3d-space and their scalar triple product is zero, then these three vectors are coplanar. If there are three vectors in a 3d-space and they are linearly independent, then these three vectors are coplanar.

## What can we use to resolve a vector?

Two methods of vector resolution have been described here – a graphical method (parallelogram method) and a trigonometric method.

## How do you know if 4 vectors are coplanar?

Show that the points whose position vectors 4i + 5j + k, − j − k, 3i + 9j + 4k and −4i + 4j + 4k are coplanar. Hence given vectors are coplanar. By taking determinants, easily we may check whether they are coplanar or not. If |AB AC AD| = 0, then A, B, C and D are coplanar.

## How do you know if three points are coplanar?

For example, three points are always coplanar, and if the points are distinct and non-collinear, the plane they determine is unique. However, a set of four or more distinct points will, in general, not lie in a single plane. Two lines in three-dimensional space are coplanar if there is a plane that includes them both.

## What are non coplanar vectors?

Similarly, a finite number of vectors are said to be non-coplanar if they do not lie on the same plane or on the parallel planes. In this case we cannot draw a single plane parallel to all of them.

## What is the significance of null vector?

What is its physical significance? It is defined as a vector having zero magnitude and acting in the arbitrary direction. It is denoted by 0. (ii) The multiplication of zero vector by a non-zero real number is again the zero vector.

## Is displacement scalar or vector?

Distance is a scalar quantity that refers to “how much ground an object has covered” during its motion. Displacement is a vector quantity that refers to “how far out of place an object is”; it is the object’s overall change in position.

## Is an odometer scalar or vector?

An odometer is an instrument used for measuring distance travelled by a vehicle such as car. Since distance is a scalar quantity, so odometer measures a scalar quantity.

## Under what condition the sum of three vectors will be zero?

If magnitude of resultant of two vectors is exactly equal to the magnitude of the third vector. If direction of resultant of those two vectors is exactly opposite to the direction of the third vector. If all above conditions are satisfied, then the resultant of three vectors will be zero.

## Can three equal magnitude vectors add to zero?

Yes, it is possible to add three vectors of equal magnitudes and get zero.