23. If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that
A. has a higher intensity than the sound produced by the source.
B. seems to come from behind the surface.
C. has a higher pitch than the sound produced by the source.
D. seems to lack overtones.
24. In a stringed musical instrument, the sound frequency of a particular string can be increased by
A. lengthening the string.
B. loosening the string.
C. tightening the string.
D. increasing the string\'s thickness.
25. Through which one of the following mediums is the velocity of a sound wave the greatest?
A. Steel
B. Lead
C. Water
D. Air
2007-02-12 04:44:13 · 1 answers · asked by tami c 1 in Science & Mathematics ➔ Physics
23. B...reflection.
24. C...ever tune a guitar? Me neither.
25. B...lead has the highest density.
2007-02-12 04:47:18 · answer #1 · answered by gebobs 6 · 0⤊ 0⤋