October 2018 1 42 Report
Koefisien muai panjang baja 0,000011/°C. Jika kawat baja mengalami pertambahan panjang 0,33 mm setelah dipanaskan pada suhu 60°C di tungku api, suhu baja sebelum dipanaskan jika panjang kawat mula-mula adalah .........


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