October 2018 1 63 Report
Sebatang perak dipanaskan sehingga shunya na 80°C. setelah diteliti terrrnyata perak tersbut bertambah panjang 0,19 mm.koefisien muai panjang perak 19 * 10¯6/°C. jka suhu mula mula perak 30°C,maka tentukan panjang mula mula batang perrak tersebut ????????

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