Solution to Assignment #1
Problems (do the reading first!)
1. Significant figures
For each of the following numbers, specify how many significant figures there are and which is the least significant figure.
Then, rewrite the numbers in scientific notation
Assignment #2 Solution
1) Lets check the above article and analyze the section on Spherical Roots in more detail.
The Size of the Earth according to Eratosthenes
First look at the diagram below. Since the sun is far, far away, the suns light rays
Assignment #4 Solution
1. Black Body Radiation & Wien's and Stefan-Bolzman's laws:
a) What is a black body?
A black body is a perfect absorber, one that absorbs all light that is incident upon it. It reflects
b) How come we see light from black
due one and a half weeks from today (Oct. 16, 2000),
*it is highly recommended to do this assignment by October 11, 2000*
Chapter 6-1, 7-1, 9-1 in significant detail.
a) Sketch and label the HR diagram. Include the temperat
Solution to Assignment #7
Due November 8, 2000
Problems to hand in
1) Draw the HRD together with the evolutionary track of a solar mass star. Explain what
happens at every stage, and why this is so. (Comment on the energy source, and the fashion
The Age of the Universe
Solution to Assignment #9
Lets assume that the Hubble constant, Ho is 75km/sec/Mpc.
Calculate the age of the Universe if (a) there is no mass, if (b) the universe has a critical density.
The oldest globular clusters are