As Thiew is leaving the parking lot in his car, he sees a coworker in the distance, rolls down his window and waves to her. Thiew is using a hand wave as a(n) .

You can decrease the resistance of a length of wire by

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around