The amplitude of two beating waves is described by the equation ψ = Amod(t)cos (ωavt). What is the main difference between this equation and the equation of a simple harmonic oscillator?
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The amplitude of two beating waves is described by the equation ψ = Amod(t)cos (ωavt).
What is the main difference between this equation and the equation of a simple harmonic oscillator?
A. The frequency changes in time.
B. The amplitude changes in time.
C. The phase changes in time.
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