How much heat is needed to melt 13.74 kg of silver that is initially at 20°c?

What are the factors that affect the resistance of a wire?

True or false graphs must include scales that increase by the same amount

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.