Pada suhu 20 derajat celcius ,debatng besi (alpha=0,000012/derajat celcius )mempunyai panjang 4 meter jika dipanaskan sampai 50 derajat celcius, hitunglah panjang besi sekarang.
marriaa
ΔT = 50-20= 30 celcius Δp = 0,000012 x 30 =0,00036 m p2 = p1 + Δp = 4 + 0,00036 = 4,00036 m
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Dzaky111
Lt = Lo(1 + αΔt) = 4( 1 + 0,000012 x 30) = 4(1 + 0,00036) = 4 x 1,00036 = 4,000144 meter
Δp = 0,000012 x 30 =0,00036 m
p2 = p1 + Δp = 4 + 0,00036 = 4,00036 m
= 4( 1 + 0,000012 x 30)
= 4(1 + 0,00036)
= 4 x 1,00036
= 4,000144 meter