This report is part of the subjects. 30202 Science (Physics), grade 5, with a purpose. To study the knowledge from the waves. Be content with use in teaching.The content of the reports of research data related to the type of wave components of the wave properties of waves, and the speed of the wave. To make it easier to study the data is collected in the form of report
.Finally, thank you teacher, enslin eyes, light, changes in reporting this book until done. If any mistakes. Unfortunately come here.
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