rotational inertia impulse kinetic energy spring constant length / frequency height impulse kinetic energy spring constant length / average molecular kinetic energy / acceleration force frequency height impulse kinetic energy spring / energy frequency / distance position vector period time potential energy velocity / frequency height rotational inertia impulse kinetic energy spring / impulse kinetic energy spring constant length angular momentum / internal energy / frequency kinetic energy mass momentum wavelength work function / energy / stored energy electric potential / gas constant / /