Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard.

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Solution

When we hit the table lightly, we transfer a small amount of energy to the particles of the table, so they vibrate will a low amplitude and we listen a low or soft sound. However, if we hit the table hard, due to greater energy supplied, the table top vibrates with a large amplitude and a loud sound is heard.

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