If all the particle of a system lie n a cube is it necessary that the cente of mas be in the cube?

The centre of mass is defined as vecR=1/Msum_im_ivecr_i . Suppose we define centre of charge as vecR_c=1/Qsum_iq_Ivecr_i where q_i represents the ith charge placed at vecr_i and Q is the total charge of the sytem a. Can a centre of charge of a two charge system be outside the line segment joining the charges? b. If all the charges of a system are in X-Y plane? c. ILf all the charges f a system lie in a cube, is it necessary that the centre of charge be in the cube?

If all the particlke of a system lie in X-Y plane is it necessary that the centre of mass be in X-Y plane?

If all the particles of a system lie in y-z plane, the x-coordinate of the centre of mass will be zero. Is this statement true or false?

The sum of the lengths of all the edges of a cube is 60 cm, then the length of the edge of the cube is

Find the potential energy of a system of eight particles placed at the vertices of a cube of side L. neglect the self energy of the particles.

A compound is formed by element A and B .This crystallizes in the cubic stucture when atoms A are the corners of a cube and B ions on the centes of the faces of the cube .The emprical formula for the compound be

A point charge q is placed at the centre of a cube. What is the flux linked. a with all the faces of the cube? b. with each face of the cube? c. if charge is not at the centre, then what will be the answer of parts a and b ?

If m is the cube root of n, then n is