Coulomb's Law: Two point charges, Q 1 and Q 2, are separated by a distance R. If the magnitudes of both charges are doubled and their separation is also doubled, what happens to the electrical force that each charge exerts on the other one

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?