
perambatan kalor
Authored by Suhandoko Suhandoko
Physics
12th Grade
Used 10+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kita dapat merasakan kehangatan api unggun karena perambatan panas secara ...
konduksi
konveksi
radiasi
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada suhu 20oC, panjang kawat besi adalah 20 m. Berapakah panjang kawat besi tersebut pada suhu 100oC jika koefisien muai panjang besi 1,1 × 10-5/oC?
50,0176 m
40,0176 m
30,0176 m
20,0176 m
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah jendela memiliki ukuran 4 × 2,5 m dengan ketebalan 10 mm. Suhu di dalam ruangan 24 °C dan di luar ruangan 26 °C. Tentukan laju perpindahan kalor dari luar ke dalam ruangan jika konduktivitas termal kaca 0,8 J/s m °C!
1600 J/s
2600 J/s
3600 J/s
4600 J/s
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah jendela memiliki ukuran 4 × 2,5 m dengan ketebalan 10 mm. Suhu di dalam ruangan 24 °C dan di luar ruangan 26 °C. Tentukan laju perpindahan kalor dari luar ke dalam ruangan jika konduktivitas termal kaca 0,8 J/s m °C!
1600 J/s
2600 J/s
3600 J/s
4600 J/s
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah benda memancarkan radiasi sebesar 600 Joule setiap menitnya. Jika diketahui luas permukaan benda tersebut adalah 10 cm^2 dan memiliki suhu sebesar 527 °C. Tentukan emisivitas benda tersebut?`
0,63
0,53
0,43
0,33
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
logam P memiliki panjang 2 kali logam Q konduktifitas logam P 3 kali konduktifitas logam Q seperti gambar, jika ujung A logam P dipanaskan maka suhu di persambungan adalah
60 0 C
70 0 C
80 0 C
90 0 C
100 0 C
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Panjang batang rel kereta api masing-masing 10 m dan dipasang pada suhu 20 o C. Pada suhu 30 o C, rel tersebut diharapkan saling bersentuhan. Jika koeffisien muai kereta api = 12 x 10-6/oC, maka jarak antara kedua batang pada suhu 20 o C adalah......
3,6 mm
2,4 mm
1,2 mm
0,8 mm
0,6 mm
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