## ASTR 688P: Planetary Science

Homework Assignment 5

Fall 2008

Prof. M. F. A'Hearn

Due: Mon, 27 Oct 2008

Problems from textbook, chapter 4

- problem 4.2
- problem 4.5
- problem 4.6
- problem 4.12
- problem 4.13
- problem 4.27

Problem based on problem 2.11 from Chamberlain & Hunten:

- Determine the cooling time for Uranus and compare it with the time
for seasonal variations. For the heat content, use a column
one scale height deep and a molar specific heat C
_{p} = 5R/2. The
cooling time is just the reciprocal of the fraction of the total heat
radiated per second according to the Stefan-Boltzmann law using the
effective temperature of the planet.