On hearing thunder, a person opens his mouth so that to equalize the air pressure on the eardrum of both the ears. This helps balance the pressure inside and outside the ears, reducing discomfort caused by sudden changes in atmospheric ...
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The voice of a small child seems more pleasing than the voice of a young man because the pitch of a child’s voice is higher. Higher pitch is often perceived as more pleasant and less harsh compared to the lower ...
To hear a clear echo, there should be a minimum distance between the reflecting plane and the sound source of 17 meters. This distance ensures that the time delay between the original sound and its reflected sound is perceptible to ...
The speed of sound is maximum in solids due to their tightly packed molecules, which facilitate faster sound wave transmission. Among the options, iron has the highest density and rigidity, leading to the fastest speed of sound. Therefore, at 20 ...
The first law of thermodynamics, also known as the law of energy conservation, protects energy. It states that energy cannot be created or destroyed, only transformed from one form to another.