REMEDIAL UH 1 SUHU DAN KALOR , RABU 16 MARET 2022
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Medium
Reva Yulietta
Used 13+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Logam besi dengan koefisien muai panjang linier 10-5/oC dengan panjang 200 cm pada suhu 20oC. Jika panjang logam besi setelah dipanaskan menjadi 200,5 cm, maka suhuya adalah. ….
200oC
210oC
230oC
240oC
250oC
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Sebuah batang logam terbuat dari aluminium, panjangnya 5 meter pada suhu 50oC. Koefisien muai panjangnya adalah 3,5x10--6Panjang batang logam tersebut jika suhunya dinaikkan menjadi 75oC adalah. ….mm
5,0004375
50,004375
500,04375
5000,4375
5,0002575
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Jumlah kalor yang dibutuhkan untuk melebur 250 gram es pada suhu –15oC menjadi air pada suhu 30oC. (kalor jenis air = 4200 J/kg K; kalor jenis es = 2100 J/kg K; kalor lebur es = 336 KJ/kg.
3.990 J
4200
33600
39459
395359
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Logam besi (kb = 500 x 10-1 kal/m detoC)mempunyai luas penampang ujungnya 5 cm2, ujung batang bersuhu 10oC dan 30oC. Banyaknya kalor yang merambat tiap menit adalah. ….kal/menit
0,3
20
30
50
75
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Batang logam dengan luas permukaan 500 cm2 dan tebalnya 10 cm. Benda suhu antara kedua permukaan baja 50oC. Jika koefisien konduksi termal logam 100 W/m., banyak kalor yang dapat dihantarkan oleh baja tiap detik sebesar. …… J/s.
300
2500
25000
250000
300000
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Terdapat 350 gram air kopi dalam sebuah cangkir dengan suhu 80oC, ditambahkan susu sebanyak 30 gram bersuhu 25oC, Jika dianggap tidak ada kalor yang diserap termos, maka setelah bercampur suhunya menjadi………
( cair=ckopi = csusu= 1 kal/gramoC)
35,76
40,90
50,45
75,66
80,23
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Emisivitas logam A satu setengah emisivitas benda B dan suhu benda A dua setengah kali benda B. Energi kalor yang dipancarkan tiap detik persatuan luas oleh benda A sama dengan …
25,75 IB
37,89 IB
45,21 IB
58,59 IB
60,15 IB
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