Hot coffee in a mug cools over time and the mug warms up. which describes the energy in this system?

The plum pudding model of the atom state that ?

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects