how would i calculate the youngs modulus from the following acoustic data set? length (mm) 100 thickness (mm) 7.5 breadth (mm) 10 density (kg/m^3) 4504, hz 0 intensity 2.4, hz 10 intensity 3.8, hz 20 intensity 10.1, hz 30 intensity 8.2, hz 40 intensity 9.9