The number of waves that pass through a fixed point per second is the of the wave. this value increases the of the wave decreases.

The correct answers are frequency and wavelength.

Explanation:

Frequency is defined as the number of waves that passes through a fixed point in a given time.

Wavelength is the distance between the two crests or the two troughs.

The frequency and the wavelength are inversely proportional to each other.

If the frequency of the wave increases then the wavelength of the wave decreases.

Therefore, the number of waves that pass through a fixed point per second is the frequency of the wave. This value increases when wavelength the of the wave decreases.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

option number c is the right answer.