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No. 1♦️Diket
F= 400 Hz
V= 300 m/s
♦️Ditanya
Lamda?
T?
♦️Penyelesaian
V= lamda × F
300 = lamda × 400
300 / 400 = lamda
0, 75 = lamda
➡️Jadi, panjang gelombang adalah 0, 75 m
V = lamda / T
300 = 0, 75 / T
300 / 0, 75 = T
400 = T
➡️Jadi, periodenya 400 s
No. 2
♦️Diket
V= 80 m/s
Lamda = 0, 5 m
♦️Ditanya
F?
♦️Penyelesaian
V= lamda × F
80 = 0, 5 × F
80 / 0, 5 = F
160 = F
➡️Jadi, Frekuensinya adalah 160 Hz
Smg mmbnt
=1/400
=0,0025 s
panjang gelombang = v/f
= 300/400
= 0,75 meter
2. f= v/panjang gelombang
= 80/0,5
= 160 hz