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Jawabannya:Pelajaran. : Fisika
Kelas. : XI IPA
Pembahasan:
Dik :
Lo= 80 m → 0,8
a = 0,000017/°C
∆t= 78°C - 28°C= 50°C
Dit: L1?
Jwb:
∆L= a. Lo. ∆t
∆L= 0,000017. 0,8. 50
∆L= 0,0000136. 50
∆L= 0,00068 cm
L1= Lo + ∆L
L1= 0,8 + 0,00068
L1= 0,80068 cm→ Pertambahan Panjang
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