Define scalar and vector physical quantities with their examples.
Scalar physical quantity : "The physical quantity which needs only magnitude to describe it is called a scalar physical quantity."
E.g. : Mass, distance, time, density, temperature, power etc.
Vector physical quantity: "The physical quantity which needs magnitude and direction both to describe it is called a vector physical quantity."
E.g. : Displacement, velocity, acceleration, force etc.
A physical quantity which has a direction
Explain position and displacement vectors. How the magnitude of vector quantity is represented ?
State, for each of the following physical quantities, if it is a scalar or a vector : volume, mass, speed, acceleration, density, number of moles, velocity, angular frequency, displacement, angular velocity.
Pick out the two scalar quantities in the following list :
force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, relative velocity.