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Jawaban:
11.a. panjang gelombang= 75cm
b. cepat rambat gelombang= 25cm
c. frekuensi= 1/3hz(0,3hz)
d. amplitudo= 4mm
12.a.panjang gelombang= 2m
b. cepat rambat= 8m/s
c.frekuensi= 4hz
Penjelasan:
11. a. panjang gelombang
λ = v / f
λ= 25cm / 1/3
= 25cmx 3/1 = 75cm
b.cepat rambat gelombang
v = λ x f
=75cm x 1/3
=25cm
c. frekuensi
f=1/t
= 1/3hz
d.Amplitudo
4mm.
12. a.λ = v / f
= 8m/s/4s= 2m
b.v = s/t
=2mx 4s= 8m/s
c.f = 1/t= 1/ 1/4= 4hz.
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