Question

Why do we hear the sound produced by the humming bees while the sound of vibration of pendulum is not heard?

Answer 1

Answer:

The frequency of vibrations of Pendulum is below 20Hz ( infrasound). We cannot hear infrasound but Humming produce audible sound which can be heard by humans.

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Answer 2

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Humming bees produce sound by vibrating their wings which is in the audible range In case of pendulum, the frequency is below 20 Hz which does not come in the audible range.

Explanation:

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