Jawabanmu

2014-04-29T14:33:12+07:00
F = 200 Hz
lamda = 0,25 m
v = lamda × f
  = 0,25 × 200
  =50 m/s
2014-04-29T16:02:39+07:00
Dik = -f= 200 hz -lamda = 0,25 m dit = v? jawab v= lamda x f = 0,25 x 200 = 50 m/s