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6. A 6 x 4 x 2 inch foam cushion has a modulus of elasticity of 6.0 psi. What is the stiffness coefficient of

6. A 6 x 4 x 2 inch foam cushion has a modulus of elasticity of 6.0 psi. What is the stiffness coefficient of the cushion when loaded on the 6 x 4 inch face?

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