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Unformatted text preview: r*, although we did not evaluate what that might be. Using the equation for ΔG (the free energy) given in your notes, derive the correct relationship for r* in terms of ΔG v (the volume free energy) and γ (the surface energy). Hint: this requires taking a derivative. Answer Selected Answer: r* = -2γ / ΔG Correct Answer: r* = -2γ / ΔG Response Feedback: Correct Take derivative with respect to respect to r, set equal to zero, and sove for r. Your basically finding where the slope equals zero on the ΔG vs r curve....
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- Fall '06
- Correct Answer, Equals sign, ASCII, Austenite