Răspuns:
a)v = \sqrt{\frac{E}{\rho}}
v = \sqrt{\frac{7,05 \times 10^{10} \, \text{N/m}²}{2700 \, \text{kg/m}³}}
v = \sqrt{\frac{7,05 \times 10^{10}}{2700}} \, \text{m/s}
v ≈ \sqrt{26083,33} \, \text{m/s}
v ≈ 161,54 \, \text{m/s}
b)A = \sqrt{A_1^2 + A_2^2}
A = \sqrt{(2)^2 + (3)^2}
A = \sqrt{4 + 9}
A = \sqrt{13}\, \text{mm}
c)λ = \frac{v}{f}
λ = \frac{161,54 \, \text{m/s}}{10^3 \, \text{Hz}}
λ = 0,16154 \, \text{m}
λ ≈ 0,16 \, \text{m}