Ch11 HW3 S2008 - Ch11 HW3 S2008 10:37 AM Web Assign Ch11...

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4/25/08 10:37 AM Ch11 HW3 S2008 Page 1 of 3 http:[email protected][email protected] Ch11 HW3 S2008 (Homework) KRISTIN SEILOFF Instructor: Jennifer Curtis Description Specific heat capacity of a solid Instructions Reading: Section 11.6 and previous sections. On this assignment you are allowed three submissions per question part. Web Assign Current Score: 13 out of 25 Due: Wednesday, April 23, 200808:35 AM EDT 1. 5/14 points The interatomic spring stiffness for gold is determined from Young's modulus measurements to be 20 N/m. The mass of one mole of gold is 0.197 kg. If we model a block of gold as a collection of atomic "oscillators" (masses on springs), what is one quantum of energy for one of these atomic oscillators? Note that since each oscillator is attached to two "springs", and each "spring" is half the length of the interatomic bond, the effective interatomic spring stiffness for one of these oscillators is 4 times the calculated value given above. Use these precise values for the constants: = 1.0546 10 -34 J · s (Planck's constant divided by 2 ) Avogadro's number = 6.0221 10 23 molecules/mole k = 1.3807 10 -23 J/K (the Boltzmann constant) In order for WebAssign to be able to give you sensible feedback, you must give 5 figures in your answers for E and S. Otherwise there is a build-up of round-off errors when you take differences of E and S, which could result in correct answers being marked wrong. one quantum = 3.6102e-21
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This note was uploaded on 10/19/2009 for the course PHYSICS 2211M taught by Professor Schatz during the Spring '06 term at Georgia Tech.

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Ch11 HW3 S2008 - Ch11 HW3 S2008 10:37 AM Web Assign Ch11...

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