Define the term modulus (or) magnitude of vector .

The magnitude of the vector is

Define and illustrate the term Modulus of a vector.

Define the terms : unit vector and equal vectors.

The resultant of two vectors A and B is perpendicular to vector A and its magnitude is equal to half of the magnitude of vector B. Then the angle between A and B is

Define the term bulk modulus. Give its SI unit. Give the relation between bulk modulus and compressibility.

Define modulus of rigidity.

Can the magnitude of the resultant of two vectors of equal magnitude be equal to the magnitude of each vector ? Explain.

The resultant of the vectors A and B is perpendicular to the vector A and its magnitude is equal to half the magnitude of vector B. The angle between vecA" and "vecB is :-