Answers for Problem Set 1

HRW pp. 11-13 #1, 16, 39
Sheet # I and II

1. Don't make me laugh.

16.

	(a)	1 AU = 4.85 x 10 -6 pc = 1.58 x 10 -5 Ly
	(b)	1 Ly = 5.87 x 1012 mi 1 pc = 1.91 x 1013 mi

39.

	(a) volume of an atom Vatom = 1.18 x 10 -23cm3
	(b) distance between centers d = 2.82 x 10 -8 cm

I:

Period T = 2 pi (L/g)1/2

II:

	R = K H 1- | c | v 2 | c | / g | c |
	-1 < c < 0