
tugas fisika

Quiz
•
Physics
•
2nd Grade
•
Medium
kusmana pak kusmana
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Gelombang elektromagnetik memiliki kelajuan 3 × 108 m/s. Jika gelombang tersebut memiliki panjang gelombang 10 nm, maka frekuensi gelombang tersebut.
F = 3 x 104 HZ
F = 3 x 108 HZ
F = 3 x 1016 HZ
F = 3 x 1024 HZ
F = 3 x 1032 HZ
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebuah radar mendeteksi sebuah benda. Jika sinyal yang dipancarkan dan kembali lagi ditangkap oleh radar membutuhkan waktu 0,2 sekon, tentukan jarak benda tersebut ke radar.
S = 0,2 x 102 m
S = 0,3 x 102 m
S = 0,3 x 104 m
S = 0,3 x 108 m
S = 0,3 x 1016 m
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Persamaan gelombang berjalan pada seutas tali dinyatakan oleh y = 0,04 sin 0,2 π (40t-5x), x dan y dalam cm dan t dalam sekon. Maka ...
Amplitudo gelombang A = (40t-5x) cm
Arah gelombang gelombang merambat ke sumbu x positif ( ke kiri )
Kecapatan rambat gelombang dapat ditentukan dengan 2 cara yaitu v = f λ dan v = k/ω
Kecepatan sudut ω= 8π. Karena ω= 2πf , maka 2πf= 8π atau f = 4 Hz
rumus bilangan gelombang k = 2π/λ maka π = 2π/λ atau λ = 4 cm
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Ujung sebuah tali yang panjangnya 1 meter di getarkan sehingga dalam waktu 2 sekon terdapat 2 gelombang. tentukanlah persamaan gelombang tersebut apabila amplitudo getaran ujung tali 20 cm.
0,2 sin 2π (t-x)
0,2 sin 2π (t-x)2
0,2 sin 4π (t-x)
0,2 sin 4π (t-x)2
0,2 sin 4π (t-x2)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
simpangan terjauh dalam suatu getaran atau gelombang
frekuensi
perioda
amplitudo
panjang gelombang
cepat rambat
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
1 getaran bandul adalah gerakan bandul dari ... .
A-B-C
A-B-C-B-A
B-C-B
C-B
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