how come frequency of a sound wave is inversly propotional to the air column?
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In a closed air column, we know that the natural frequency is inversely proportional to the length of the air column. So as we change the length of the air column, the natural frequency also changes until it becomes equal to the frequency of the external periodic force. If it happens, a loud sound (resonance) is heard.
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A consequent is the second half of a hypothetical proposition. In the standard form of such a proposition, it is the part that follows "then". In an implication, if P implies Q, then P is called the antecedent and Q is called the consequent. In some contexts, the consequent is called the apodosis
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