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Physics (AS & A Level) · Oct / Nov 2017 · Paper 11 · Question 21

9702Elastic and plastic behaviour

The stress-strain graph for a metal is shown. What is the strain energy per unit volume of a rod made from this metal when the strain of the rod is 0.010?

  1. A10 kJ m–3
  2. B100 kJ m–3
  3. C1.0 MJ m–3
  4. D10 MJ m–3

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Correct answer: D. 10 MJ m–3

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