Using the solution to Problem 6.13, rank the magnitudes of the moduli of elasticity for the following hypothetical X, Y, and Z materials from the greatest to the least. The appropriate A, B, and n parameters (Equation 6.25) for these three materials are tabulated below; they yield EN in units of electron volts and r innanometers:

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B En (6.25) Material 2.5 2.0 x 10-5 8.0 x 10-6 1.5 x 10-5 2.3 10.5 3.0 2. 2.