Question

Tolong di jawab makasih

Answer 1

Verified answer

Gelombang.
Kelas XI SMA kurikulum 2013 revisi 2016.

y = A sin (ωt - kx)
y = 20 sin [100π(t - 0,5x)] = 20 sin (100πt - 50πx)

Frekuensi:
f = ω / (2π)
  = (100π rad/s) / (2π) = 50 Hz

Panjang gelombang:
λ = 2π / k
   = 2π / (50π cm⁻¹) = 0,04 cm

Cepat rambat:
v = ω / k
   = (100π rad/s) / (50π cm⁻¹) = 2 cm/s