Obtain an expression for the magnitude of the position vector of a point whose coordinates are `(alpha , beta , gamma)`.

Obtain an exapression for the magnutude of the position vector of a point whose co. oridinates are ( alpha, beta and gamma ).

Obtain an expression for the displacement vector in treams of the co. ordinates of initial and final point.

An electric dipole of small length lies along X-axis of a coordinates system. Derive an expression for the magnitude of electric field E due to the dipole at any point on its equatorial line. Mention its direction.

Obtain an expression for velocity of body in S.H.M. .At which point/points will it be zero ?

Two point charges +q and -2q are placed at the vertices B and C of an equilateral triangle ABC of side a as given in the figure. Obtain the expression for (i) The magnitude and (ii) the direction of the resultant electric field at the vertex A due to these two charges.

Radioactive pollution is caused by alpha, beta, gamma particles.

Obtain an expression for cross product of two vector in terms of their rectangular component form.

Obtain expression for cross product of two vectors in terms of their rectangular components.

find the position vector of the mid point of the vector joining the points P(2,3,4) and Q(4,1,-2).