Longitudinal Waves. To see a animations of spherical longitudinal waves check out: In a longitudinal wave the particle displacement is parallel to the direction of wave propagation. The animation at right shows a one-dimensional longitudinal plane wave propagating down a tube.
The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.
Explain how each of the following affects the vapor pressure of a liquid: (a) the volume ofthe liquid, (b) the volume of the container, (c) the surface area of the liquid, (d) thetemperature, (e) intermolecular forces of attraction, (f) the density of the liquid.