Page 9 - QONITA KURROTUL AKYUN (D0A219009)-TUGAS 14.3 PSPI
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IPA – 3.4 / 4.4 / 1 / 1.1
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3. Ketika bersuhu 25 C panjang kaca adalah 50 cm. Setelah dipanaskan, panjang kaca menjadi
o
50,9 cm. Koefisien muai panjang kaca α = 9 x 10 C . tentukan Suhu akhir kaca!
-6
-1
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4. Perhatikan gambar bimetal berikut ini!
Jika ukuran kedua logam adalah sama sedangkan koefisien muai panjang logam B lebih besar
daripada koefisien logam A, gambarkan bimetal tersebut setelah dipanaskan!
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5. Para pekerja sedang mengerjakan pemasangan rel kereta api. Panjang batang rek kereta api
masing-masing 8 m dipasang pada suhu 20 C. Ketika suhu naik menjadi 30 C, diharapkan rel
0
0
tersebut saling bersentuhan. Jika koefisien muai panjang rel adalah 12 x 10 / C. Tentukan
o
-6
jarak antara kedua batang rel yang diperlukan pada suhu 20 C !
0
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Ayo simpulkan!
Berdasarkan aktivitas yang sudah kalian lakukan, buatlah kesimpulan terkait dengan faktor-faktor
pemuaian serta pengaruh koefisien muai panjang terhadap kemampuan memuai panjang!
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Kegiatan belajar 3 <<
1. Perhatikan gambar berikut!
Gb 1. Embun di pagi hari
https://podjokqolbuku.wordpress.com/2010/05/22/si-embun-pagi/comment-page-3/
UKBM MTsN 1 Lumajang 8
