PHY7AW10practice-q5

PHY7AW10practice-q5 - 7A 2C Quiz 5 DL Sec. ____...

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Unformatted text preview: 7A 2C Quiz 5 DL Sec. ____ Name_____________________ __________________ last first for office use only I certify by my signature that I will abide by the code of academic conduct of the University of California. Signature _____________________________ 1. The interaction between two molecules is as shown in the graph. When the molecules are separated by 2.0Å, they are momentarily at rest. a) What is the maximum kinetic energy of the molecules? b) 1.5 x 10-21 J of energy is removed from the system. What is the resulting Etot and what is the minimum kinetic energy? 7A 2C Quiz 5 DL Sec. ____ Name ________________________ __________________ last first 2. Four molecules are arranged in a square pattern as shown in the figure. The pairwise potential between two molecules is as shown in the graph. Estimate the bond energy of this 4-molecule cluster. Be as accurate as you can. That is, consider both nearest-neighbor and other bonds. If you ignore these other bonds, would you overestimate or underestimate the magnitude of the bond energy? Explain. ...
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