1. Some of the vocabulary of physics has found its way into the vernacular. For example, "quantum leap" is used to describe significant changes in anything, and "polarization" is used with reference to opinions, political views, and philosophies. Describe the use of two or more other words from the world of physics that have become part of the vernacular.

2. An electron and a proton are accelerated to equal kinetic energies, attaining speeds low enough to keep relativistic effects negligible. Find the ratio of their de Broglie wavelengths.

3. The kinetic energy of a certain particle is equal to the energy of a photon. The particle moves at 5.0% the speed of light. Find the ratio of the photon wavelength to the de Broglie wavelength of the particle.