The work done by a force in moving an object along a closed loop is zero. This is a statement of:

In a metallic conductor, the drift velocity of electrons is directly proportional to:

The dimension of impulse is:

According to the first law of thermodynamics, the change in internal energy of a system is equal to:

Which physical law is described by the statement "The rate of change of momentum of an object is directly proportional to the net external force applied to it"?