)a 0.30-kg block of wood is suspended on a spring. in equilibrium the wood stretches the spring 2.0 cm downward. the wood is then pulled an additional distance of 1.0 cm down and released from rest. (a) how long does it take the wood to make 3 complete cycles of vibration

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