ULANGAN HARIAN SEMESTER GENAP 25
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Medium
Ratna Khaa
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20 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Jika suhu suatu benda adalah 0°C, maka dalam skala Kelvin suhunya adalah …
Evaluate responses using AI:
OFF
Answer explanation
T(K) = T(°C) + 273
2.
OPEN ENDED QUESTION
3 mins • 1 pt
Kalor jenis suatu zat menyatakan …
Evaluate responses using AI:
OFF
Answer explanation
Kalor yang dibutuhkan untuk menaikkan suhu 1 kg zat sebesar 1°C
3.
OPEN ENDED QUESTION
3 mins • 1 pt
Jika 0,2 kg logam menyerap 2000 J dan suhu naik 20°C, maka kalor jenis logam itu adalah …
Evaluate responses using AI:
OFF
Answer explanation
c=Q/mΔT=2000/0.2⋅20=500
4.
OPEN ENDED QUESTION
3 mins • 1 pt
Zat A lebih cepat panas dari zat B jika diberikan kalor yang sama. Hal ini menunjukkan bahwa …
Evaluate responses using AI:
OFF
Answer explanation
Zat dengan kalor jenis kecil mengalami kenaikan suhu lebih besar.
5.
OPEN ENDED QUESTION
3 mins • 1 pt
Mengapa air digunakan sebagai zat pendingin mesin kendaraan?
Evaluate responses using AI:
OFF
Answer explanation
Kalor jenis besar = mampu menyerap banyak kalor tanpa cepat naik suhu.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika 2 kg air pada 30°C dicampur dengan 1 kg air pada 90°C, maka suhu campurannya adalah …
50°C
60°C
80°C
40°C
30°C
Answer explanation
m1cΔT1=m2cΔT2
2(T−30)=1(90−T) = 2T−60=90−T
= 3T=150⇒T=50°C
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Kalor lebur es 334.000 J/kg. Berapa kalor diperlukan untuk melelehkan 2 kg es?
Answer explanation
Q=mL=2⋅334.000=668.000J
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