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jadi a.32 cm
dik= n=7/4 = 1,75
= t =0,25
dit = T
jwb= T= t/n = 0,25/1,75 = 0,14 sekon(c) 26). dik: t = 0,25 n =7/4= 1,75 dit= f jwb= f : n/t = 1,75/0,25 = 7 (b) 27). C. gelombang suara