Dalam waktu 2 detik sebuah gelombang menempuh 14m. Bila frekuensinya 3Hz. Hitunglah cepat rambat dan panjang gelombang!
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s = 14m
f = 3Hz
v=?
λ =?
v = s/t
v= 14/2
v = 7m/s
v=λ f
7 = λ x 3
λ = 7/3 m=2,3m