Pembahasan.
Persamaan gelombang;
y = 2 sin π (20 t - x/25)
y = 2 sin (20π t - πx/25)
Persamaan umum ;
y = A sin (ωt - kx)
1) Amplitudo (A)
A = 2 cm => Jawaban A
2) Kecepatan sudut (ω)
ω = 20π rad/s => Jawaban A
3) Frekuensi (f)
ω = 2πf
f = ω/2π
f = 20π rad/s / 2π
f = 10 Hz => Jawaban B
4) Bilangan gelombang (k)
k = π/25 => Jawaban B.
5) Panjang gelombang (λ)
k = 2π / λ
λ = 2π / k
λ = 2π / (π/25)
λ = 50 cm => Jawaban E
6) Cepat rambat gelombang (v)
v = λ f
v = 50 cm 10 Hz
v = 500 cm/s
v = 5 m/s => Jawaban E
7) Periode (T)
T = 1/f
T = 1/ 10Hz
T = 0,1 s => Jawaban A
=====\\(^_^)//=====
Mapel : Fisila
Materi : Gelombang Transversal
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Verified answer
Pembahasan.
Persamaan gelombang;
y = 2 sin π (20 t - x/25)
y = 2 sin (20π t - πx/25)
Persamaan umum ;
y = A sin (ωt - kx)
1) Amplitudo (A)
A = 2 cm => Jawaban A
2) Kecepatan sudut (ω)
ω = 20π rad/s => Jawaban A
3) Frekuensi (f)
ω = 2πf
f = ω/2π
f = 20π rad/s / 2π
f = 10 Hz => Jawaban B
4) Bilangan gelombang (k)
k = π/25 => Jawaban B.
5) Panjang gelombang (λ)
k = 2π / λ
λ = 2π / k
λ = 2π / (π/25)
λ = 50 cm => Jawaban E
6) Cepat rambat gelombang (v)
v = λ f
v = 50 cm 10 Hz
v = 500 cm/s
v = 5 m/s => Jawaban E
7) Periode (T)
T = 1/f
T = 1/ 10Hz
T = 0,1 s => Jawaban A
=====\\(^_^)//=====
Mapel : Fisila
Materi : Gelombang Transversal