Jawabanmu

2014-06-07T10:43:04+07:00
V = lamda.frequensi
v = 25 cm.2 Hz
v = 50 cm/s = 0,05 m/s
2014-06-07T10:44:20+07:00
D1
lamda = 25 cm
f = 2 Hz


d2
v

d3
v = 25.2
= 50 cm/s