Pride and Prejudice
Volume 3 (p233~367)
McDougal Littell Science
Wave, Sound, and Light (p45~57)
2.2 Frequency determines pitch
2.3 Intensity determines loudness
1/21~2/3
Pride and Prejudice
Volume 3 (p233~367)
McDougal Littell Science
Wave, Sound, and Light (p45~57)
2.2 Frequency determines pitch
2.3 Intensity determines loudness
1/21~2/3
[18기][Notice]Next Book-The Prince + McDougal Littell Science Motion and Forces