This article is about the basketball rule. For the food belief, see Five-second rule. In basketball, the five-second rule, or five-second violation, is a rule that helps promote continuous play. There are multiple situations where a five-second violation may occur.
Speed of sound which is the distance travelled by sound waves. Wavenumber which is the property of a wave. Wavelength which is the distance between each sound wave. Frequency which is the number of times a sound wave occurs.Wavelength is a measure of the distance between several sound waves and is used to measure the length of a sound wave in meters.peed of sound which is the distance travelled by sound waves. Wavenumber which is the property of a wave. Wavelength which is the distance between each sound wave. Frequency which is the number of times a sound wave occurs.
The only difference between these manifestions of electromagnetic radiation is due to differences in the frequency and wavelength of the oscillations. These two quantities are related by the formula (velocity) = (frequency) x (wavelength), which in this case reads c = f l. The types of electromagnetic radiation are listed above in decreasing order of wavelength, and hence increasing order of frequency. (When we study a little quantum mechanics later in the course, we will learn that this is also the order of increasing energy for the individual photons.)