February 2019 2 43 Report
1.dibawah ini ysng dapat digunakan untuk meredam bunyi?A karpet.B.lembaran aluminium c.dinding tembok.D lembaran kayu.
2.gelombang bunyi yang mengenai permukaan keras akan?A dibiaskan.B dipantulkan ,c diteruskan,D hilang
*tolong dijawab yah kakak yg cantik dan ganteng*
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