Define unit vector, null vector and position vector .

Define the Vector

Define zero vector.

Let vector be the 2hat(i)+hat(j)-hat(k) then find the unit vector in the direction of a vector

The vector cosalpha\ cosbeta hat i+cosalpha\ sinbeta hat j+sinalpha hat k is a a.null vector b. unit vector c. constant vector d. none of these

Is the vector sum of the unit vectors veci and vecj a unit vector? If no, can you multiply this sum by a scalar number to get a unit vector?

Which of the following is a null vector (a) velocity vector of a body moving in a circle with a uniform speed (b) velocity vector of a body moving in a straight line with a uniform speed (c) position vector of the origin of the rectangular coordinate system (d) displacement vector of a stationary object

Define position vector of point.

Unit vector does not have any

If hata and hatb are unit vectors then the vector defined as vecV=(hata xx hatb) xx (hata+hatb) is collinear to the vector :

If hatn is a unit vector in the direction of the vector vecA , then:-