Question

Calculate wavelength of longitudinal wave of frequency 400 hz in a rod of material density of 5 x 10^3 kg/m^3 and young modulus 8.0x10^10 n/m^2

Answer 1

calculate the velocity using the formula; v = √Y/density
and the divide it to frequency to calculate wavelength
wavelength = velocity/fequency

Answer 2

use v= (gamma ×r×t/m)^1/2