Carbide cutting tools are composites of very hard tungsten carbide particles in a cobalt matrix. The elastic moduli of tungsten carbide and cobalt are 102 × 106 and 30 × 106 psi, respectively. It was experimentally found that the elastic modulus of a composite containing 52 vol.% carbide was 60 × 106 psi. What value of the exponent n in Equation (21.26) would this measurement suggest? A trial and error solution is necessary to solve this. Note that n = 0, is a trivial solution.