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Describe the physical properties of a periodic wave.
Describe the physical properties of a periodic wave.
Periodic waves have regular repetitions that can be described using period and frequency.
The period is the time of one complete oscillation of the wave.
The frequency is the rate at which the wave repeats.
A pendulum with a period of 2.8 s and a frequency of 0.36 Hz
Mechanical wave frequencies give us the sound wave spectrum
The amplitude of a wave is independent of the period or the frequency of that wave.
For a sinusoidal curve
Peak amplitude, u
Peak-to-peak amplitude, 2u
Root mean square amplitude, u/sqrt 2
Wave period (not an amplitude), t
Wavelength is the distance between corresponding positions on successive regularly repeating wave pulses.
A sinusoidal wave can be described by an equation involving one sine or cosine function and the wavelength, amplitude, and frequency of the wave.
For a periodic wave, wavelength is proportional to the wave’s speed and inversely proportional to the wave’s frequency.
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