Ch11 HW3 - Ch11 HW3...

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Ch11 HW3 (Homework) BRANDON JARROTT FELDKAMP PHYS 2211, section M, Fall 2008 Instructor: Jennifer Curtis Web Assign Current Score: 24 out of 25 Due: Friday, December 5, 2008 09:00 AM EST 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. The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. [MI2 11.P.56.alt02] 14/14 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 =
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This note was uploaded on 02/21/2010 for the course PHYS 2211 taught by Professor Prog during the Spring '09 term at Georgia Tech.

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Ch11 HW3 - Ch11 HW3...

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