The Young's modulus for a material is 11.0 x 1010 N/m2. The material is stretched to a strain of 1.0 x 10-3. How much elastic energy will be expended? (Express your answer in J/m3)

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The Young's modulus for a material is 11.0 x 1010 N/m2. The material is stretched to a strain of 3.0 x 10-3. How much elastic energy will be expended?

answer is 495000.0