# Question: 5.3) Assuming that the modulus of elasticity E is proportional to the following relation: E at _ : A + n(n+1)B A) flu—n] “B (A ){n+2J/(1_m’ 11—3 rank the magnitudes of the moduli of elasticity for the following hypothetical X, Y and 2. materials from the greatest to the smallest. The appropriate A, B, and n parameters for these three materials are tabulated below; they yield um in units of electron volts and r in nanometres. -Free Course Hero Question Answer.

Question Description: 5.3) Assuming that the modulus of elasticity E is proportional to the following relation: E at _: A + n(n+1)B A) flu—n] “B (A ){n+2J/(1_m’ 11—3 rank the magnitudes of the moduli of elasticity for the following hypothetical X, Y and 2. materials from the greatest to the smallest. The appropriate A, B, and n parameters for these three materials are tabulated below; they yield um in units of electron volts and r in nanometres

5.3) Assuming that the modulus of elasticity E is proportional to the following relation: E at _ : A + n(n+1)B A) flu—n] "B (A ){n+2J/(1_m' 11—3 rank the magnitudes of the moduli of elasticity for the following hypothetical X, Y and 2. materials from the greatest to the smallest. The appropriate A, B, and n parameters for these three materials are tabulated below; they yield um in units of electron volts and r in nanometres

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Given, EQ - 2A n ( n+ 1 ) B A 3/1 - n A nB he For material X -) A = 1. 5 , B = 7 x 10-6 , 1=8 Ex 4 - 2X15 + 8 ( 8 + 1 ) 7X10 - 6 1.5 3 / 1 - 8 1.5 8+ 2 / 9- 8 8 X7X 10- 6 8 X7X10- 6 . 96 1 1 ) For material Y =) A = 2, B = 1 X10-5, 1=9 Ey Q - 2X2 9 ( 9 + 1 ) X 10 - 5 2 3 / 1- 9 2 9 x 10 -5 9 x 10-5 942 /1 - 9 Ey & 1023 . 1 ill ) For material Z =) A = 3.5, B= 4 x 10%, 1 = 7 EZ Q - 2X3.5 7 ( 7 + 1 ) 4x 10-6 3.5 3 / 9 - 7 3.5 7X 4X10- 6 7+2/1-7 7 x 4x 10-6 EzQ 12375.3 Ez 7 Most Elastic E z > Ex > Ey Ey , Least Elastic EX - Avg Elastic