Jawabanmu

2014-04-01T18:03:59+07:00
V=lamda*f....350=2, 8*f...f=125Hz
ya apa rumus nya
itu rmsnya paling kiri aduh
2014-04-01T18:24:00+07:00
Dik. lamda = 2,8m
       V = 350 m/s
dit. f ?
jawab : f = V / lamda
              = 350 / 28
              = 92,52 Hz