1. The problem statement, all variables and given/known data Consider a cylindrical specimen of some hypothetical metal alloy that has a diameter of 10mm. A tensile force of 1500 N produces an elastic reduction in diameter of 6.7e-4mm. Compute the elastic modulus of this alloy, given that poisson's ratio is 0.35. 2. Relevant equations stress = eleastic modulus*strain poisson's ratio = lateral strain/axial strain 3. The attempt at a solution Calculate pressure in Pa: 1500/(5e-3^2*3.14159) = 1.90986e+7 Convert to GPa: 1.90986e+7/1e6 = 1.90986e+1 Calculate lateral strain: 6.7e-4/10 = 6.7e-5 Calculate axial strain: 6.7e-5/.35 = 1.91429e-4 Calculate Elastic Modulus: 1.90986e+1/1.91429e-4 = 9.97686e+4 =100GPa The correct answer is 100MPa. I'm not sure where i've made the mistake though.