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Verified answer
GELOMBANG• persamaan simpangan
Dari persamaan simpangan dan bentuk bakunya
y = 20 sin [100π (t - 0,5x)]
y = 20 sin (100πt - 50πx
y = A sin (ωt - kx)
diperoleh
• A = 20 cm
• ω = 100π rad/s
• k = 50π /cm
a][ frekuensi gelombang
ω = 100π
2π f = 100π
f = 50 Hz ← jwb
c][ panjang gelombang
k = 50π
2π / λ = 50π
λ = 1/25 = 0,04 cm ← jwb
b][ kecepatan rambat
v = ω / k
v = 100π / 500π
v = 2 cm/s ← jwb
a t a u
v = λ f
v = (1/25) • 50
v = 2 cm/s ←
Verified answer
Gelombang.Kelas XI SMA kurikulum 2013 revisi 2016.
y = 20 sin [100π(t - 0,5x)]
y = 20 sin (100πt - 50πx)
y = A sin (ωt - kx)
Frekuensi
ω = 2πf
f = ω / (2π)
= (100π rad/s) / (2π) = 50 Hz
Panjang gelombang
k = 2π / λ
λ = 2π / k
= 2π / (50π cm⁻¹) = 0,04 cm
Cepat rambat gelombang
v = λf
= 2π / k ω / (2π)
= ω / k
= (100π rad/s) / (50π cm⁻¹) = 2 cm/s