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Material Science and Engineering (Help me please Immediately)4

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4. A cylindrical aluminum specimen having a diameter of \(20 \mathrm{~mm}\) and length of \(210 \mathrm{~mm}\) is deformed elastically in tension with a force of \(48,800 \mathrm{~N},\left(\mathrm{U}_{\mathrm{A} 1}=0.33, \mathrm{E}_{\mathrm{Al}}=69 \mathrm{GPa}\right)\)

Determine the following:

(a) The amount by which this specimen will elongate in the direction of the applied stress.

(b) The change in diameter of the specimen. Will the diameter increase or decrease?

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