December 2018 1 14 Report
2 buah gelombang merambat dengan kecepatan sama. periode gelombg prtma 1 sekon dan periode gel. ke2 adl 1,5 sekon. perbandingan pjng gel.pertm dan ke2 adlh..a.2:3. b. 3:2. c.3:4. d. 4:3...bantu jwab ya

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