
The harmonic frequency refers to the resonant frequency that is an integral multiple of the fundamental frequency, harmonics are usually simple sinusoidal oscillation at a single frequency. where as Resonance frequency are frequencies that are not necessarily sinosudal or integral multiple of fundamental frequency and it may have complex oscillations made up of multiple harmonics ~
It's like if you play a piano with a single key, it will show harmonic frequency, but if you use multiple keys at a time it may show Resonance.
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What Happens when frogs park Illegally They get Toad
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Word War 2 started in September 1st 1939 and ended in September 2nd 1945
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a is the answer
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A. The author tells events in chronological order, which provides structure to the article.
A because yea I just feel like A is the better answer choice