tolong bantuanya ya,besok di kumpulkan:

1.Dik:λ=0,75
v=150m/s
Dit:f=...?
Jawab:
[tex]f = \frac{v}{lamda} \\ = \frac{150ms}{0.75m} \\ = 200hz[/tex]

2.Dik:f=300hz
v=1500m/s
Dit:λ=...?
Jawab:
[tex]lamda = \frac{v}{f} \\ = \frac{1500ms}{300hz} \\ = 5m[/tex]

3.Dik:f=440hz
λ=75cm
Dit:v=...?
Jawab:
v=λ.f
=75cm×440hz
=33000m/s

Note:Lamda(λ)