An Introduction to Thermal Physics
An Introduction to Thermal Physics
1st Edition
ISBN: 9780201380279
Author: Daniel V. Schroeder
Publisher: Addison Wesley
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Chapter 6.2, Problem 20P

(a)

To determine

The values of x for a finite series sum.

(b)

To determine

The value of partition function for a single harmonic oscillator.

(c)

To determine

The value of average energy of the system.

(d)

To determine

The total energy of a single harmonic oscillator.

(e)

To determine

The value of the heat capacity of the system.

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Problem 1: This problem concerns a collection of N identical harmonic oscillators (perhaps an Einstein solid) at temperature T. The allowed energies of each oscillator are 0, hf, 2hf, and so on. a) Prove =1+x + x² + x³ + .... Ignore Schroeder's comment about proving 1-x the formula by long division. Prove it by first multiplying both sides of the equation by (1 – x), and then thinking about the right-hand side of the resulting expression. b) Evaluate the partition function for a single harmonic oscillator. Use the result of (a) to simplify your answer as much as possible. c) Use E = - дz to find an expression for the average energy of a single oscillator. z aB Simplify as much as possible. d) What is the total energy of the system of N oscillators at temperature T?
Problem 3. A pendulum is formed by suspending a mass m from the ceiling, using a spring of unstretched length lo and spring constant k. 3.1. Using r and 0 as generalized coordinates, show that 1 L = = 5m (i² + r²0?) + mgr cos 0 – z* (r – lo)² 3.2. Write down the explicit equations of motion for your generalized coordinates.
2.03 Given f(x) = +1, 2 + sin(Tx) that is defined over [1, 6] with a step (h= 1). Using the N.G.F. function differences Interpolation. The first :derivative of P2(s) at x=3 is None of them 32 O 12 O 25 O
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