by a steel shell (inner diameter 0.28 in., outer diameter 0.35 in.). A load P compresses the core and shell that both have a length 4 in. The moduli of elasticity of the brass and steel are 15x10 psi and 30x10 psi, respectively. a. What load P will compress the assembly by 0.003 in.?. (20 points - 20 minutes) P Steel shell Brass core di dy dy