Читать книгу Engineering Acoustics - Malcolm J. Crocker - Страница 104
Solution
ОглавлениеAssuming that ρ = 1.21 kg/m3 and c = 343 m/s, so ρc = 415 ≈ 400 rayls:
then from Eq. (3.47):
Assuming that ρ = 1.21 kg/m3 and c = 343 m/s, so ρc = 415 ≈ 400 rayls:
then from Eq. (3.47):
