November 2023 0 3 Report
sebatang rel kereta api dgn pjg 25m pada suhu 30°c.Pada malam hari yg dingin suhu kereta api mampu mencapai -10°c, hitunglah
a.pertambahan pjg yg diamlami oleh rel tsb
b pjg akhir rel kereta api
(koefisien muai pjg rel 12.10-⁶/°c)​

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