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We have a stringed musical instrument. The string is plucked in the middle first with a force of greater magnitude and then with a force of smaller magnitude. In which case would the instrument produce a louder sound?
 
The loudness of a sound is determined by its .
 
If we pluck the instrument a force of smaller magnitude, we hear a  because we produce a sound wave of .
 
Similarly, if we pluck the instrument a force of greater magnitude, we hear a  because we produce a sound wave of .