We have learnt that vibration is necessary for producing sound. Explain why the sound produced by every vibrating body cannot be heard by us?

Explanation

### Step-by-Step Solution:

1. **Understanding Vibration and Sound Production**:
- Sound is produced when an object vibrates. These vibrations create sound waves that travel through a medium (like air, water, or solids).

2. **Frequency of Vibrations**:
- Every vibrating body produces sound waves at a specific frequency. The frequency is the number of vibrations per second, measured in Hertz (Hz).

...