Question

Me ajudem, por favor

Answer 1

1

$f=\frac{v}{\lambda} = \frac{27}{11,4}= 2,368 Hz$

2

$v=\lambda f=2,4 \cdot 500=1200 m/s$

3

$\lambda= \frac{v}{f}=\frac{458}{1,85} =262,16m$

4

Crista e vale respectivamente

5

a) 18 m

b) 3 m

c)$f=\frac{70}{18}=3,89 Hz$