Which statement correctly describes the relationship between the energy of a wave and the wave’s amplitude? a. high energy waves have high amplitudes. b. low energy waves have high amplitudes. c. high and low energy waves have the same amplitudes.

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