Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium. There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. The animations below demonstrate both types of wave and illustrate the difference between the motion of the wave and the motion of the particles in the medium through which the wave is travelling.
If the temperature of the air is said to be at absolute zero, one might conclude that a. the molecules contain a minimum amount of energy. b. the motion of the molecules is at a maximum. c. the molecules are occupying a large volume. the molecules contain a minimum amount of energy.
Thus, as the air is exhaled, its mixing ratio $f$ is 0, while it reaches 1 when the exhaled air has mixed with a large amount of outside air. The variables we use are: Condensation of Exhaled Breath (the temperature was around 11Â°C and the RH was about 90%). Note that the water vapor begins to condense only after it mixed with enough outside air, such that it could reach a RH of 100%, when the air cooled to about 32Â°C.