Jawabanmu

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  • Terpelajar
2014-06-26T20:14:40+07:00
V logam 20 derajat = Vo
V = Vo (1 + γ . ΔT)
γ = koef. muai volume
α = koef. muai panjang
γ = 3α
281.834 = 281.328 (1 + 3α . 50)
42199,2α  = 0,506
α = 1,2 . 10^-5 (untuk cm)

Lo = 83.72 cm
L = Lo (1 + α . ΔT)
L = 83.72 (1 + 0,0033734 . 80)
L = 83.72 + (1 + 1,2 . 10^-5 . 80)
L = 83,72 + 0,08
L = 83,8
CMIIW