Seleksi Olimpiade ASTAGA 2025
Quiz
•
Physics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Hera Oktaviani
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu nilai tengah populasi μ diperkirakan menggunakan rata-rata bergerak. Jika estimasi awal adalah 50, dan hasil berikutnya berturut-turut adalah: 55, 57, 56, maka estimasi μ setelah iterasi ke-3 dengan metode rata-rata sederhana adalah...
56
56.5
55.5
56.25
56.75
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah roket bermassa 2000 kg melepaskan gas 500 kg dengan kecepatan 100 m/s ke arah belakang. Berapa kecepatan roket setelah dorongan?
5
10
15
20
25
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
145 km
240 km
190 km
300 km
360 km
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika sebuah bintang menunjukkan sudut paralaks 0.2 arcsecond, maka jarak bintang tersebut dari Bumi adalah...
2 pc
5 pc
10 pc
15 pc
20 pc
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bintang tipe O menunjukkan garis spektrum ion He⁺ dan sangat sedikit H, sedangkan bintang tipe M menunjukkan garis absorpsi molekul TiO. Apa yang dapat disimpulkan dari suhu permukaan kedua bintang?
Tipe O lebih dingin dari tipe M
Tipe M memiliki suhu tertinggi
Tipe O memiliki suhu paling tinggi
Keduanya memiliki suhu yang sama
Tidak bisa disimpulkan
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah bintang memiliki suhu permukaan 5.800 K. Tentukan panjang gelombang maksimum yang dipancarkan oleh bintang tersebut dan jenis cahaya yang dominan dipancarkan. (Gunakan hukum Wien: λ_max = 2,9 × 10⁻³ / T)
500 nm, cahaya ultraviolet
600 nm, cahaya kuning
580 nm, cahaya biru
500 nm, cahaya tampak
580 nm, cahaya tampak
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